ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output Features Applications Telecommunications Data communications Wireless communications Servers, workstations Benefits High efficiency - no heat sink required Can replace two single output quarter-bricks RoHS lead-solder-exemption compliant Delivers up to 15A (50 W) Operates from - 55 C to 85 C ambient Survives 1000 g mechanical shock, MIL-STD-883E Industry-standard quarter-brick pinout Available in through-hole and surface-mount packages Outputs available in 12.0, 8.0, 6.0, 5.0, 3.3, 2.5, 2.0, 1.8, 1.5, 1.2, and 1.0 V Low profile: 0.274" (6.96 mm) Low weight: 0.53 oz [15 g] typical Extremely small footprint: 0.896" x 2.30" (2.06 in2) On-board input differential LC-filter Extremely low output and input ripple Start-up into pre-biased load No minimum load required 2000 VDC I/O isolation Meets Basic Insulation requirements of EN60950 Fixed-frequency operation Fully protected Remote output sense Positive or negative logic ON/OFF option Output voltage trim range: +10%/-20% (except 1.2 and 1.0V outputs with a trim range of 10%) with industry-standard trim equations High reliability: MTBF 3.4 million hours, calculated per Telcordia TR-332, Method I Case 1 UL60950 recognized in US and Canada and DEMKO certified per IEC/EN60950 Meets conducted emissions requirements per FCC Class B and EN55022 Class B when used with an external filter All materials meet UL94, V-0 flammability rating Description The ASQ24 eighth-brick dc-dc converters are ideally suited for aerospace applications where high reliability, low profile, and low weight are critical. They are designed for reliable operation in harsh thermal and mechanical environments. In high-ambient temperature applications, the ASQ24 Series converters provide thermal performance that exceeds competing dc-dc converters that have a higher nominal rating and much larger package size. This performance is accomplished through the use of patented/patent-pending circuits, packaging, and processing techniques to achieve ultra-high efficiency, excellent thermal management, and a low-body profile. Coupled with the use of 100% automation for assembly, this results in a product with extremely high quality and reliability. Available in through-hole and surface-mount packages, the ASQ24 Series converters are also ideal for environments with little or no airflow. Contact Power-One for more information on using these converters in conduction cooled applications. Operating from an 18 to 36 VDC input, the ASQ24 Series converters provide any standard output voltage from 12 VDC down to 1.0 VDC. Outputs can be trimmed from -20% to +10% of the nominal output voltage (10% for output voltages 1.2 VDC and 1.0 VDC), thus providing outstanding design flexibility. MCD10004 Rev. 1.3, 19-Oct-09 Page 1 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output Electrical Specifications (common to all versions) Conditions: TA = 25 C, Airflow = 300 LFM (1.5 m/s), Vin = 24 VDC, All output voltages, unless otherwise specified. PARAMETER ABSOLUTE MAXIMUM RATINGS Input Voltage Operating Ambient Temperature Storage Temperature NOTES Continuous MIN TYP 0 -55 -55 MAX UNITS 40 85 125 VDC C C INPUT CHARACTERISTICS Operating Input Voltage Range Input Under Voltage Lockout Turn-on Threshold Turn-off Threshold 18 24 36 VDC 16 15 17 16 17.5 16.5 VDC VDC Non-latching ISOLATION CHARACTERISTICS I/O Isolation Isolation Capacitance: 2000 1.0 - 3.3V 5.0 - 6.0V 8.0V, 12V VDC pF pF pF M 160 260 230 Isolation Resistance 10 FEATURE CHARACTERISTICS Switching Frequency 1 Output Voltage Trim Range 415 1 Remote Sense Compensation Output Over-Voltage Protection Auto-Restart Period Turn-On Time ON/OFF Control (Positive Logic) Converter Off Converter On ON/OFF Control (Negative Logic) Converter Off Converter On Industry-std. equations (1.5 - 12V) Industry-std. equations (1.0 - 1.2V) Percent of VOUT(NOM) Non-latching (1.5 - 12V) Non-latching (1.0 - 1.2V) Applies to all protection features -20 -10 117 124 125 132 100 4 +10 +10 +10 140 140 kHz % % % % % ms ms -20 2.4 0.8 20 VDC VDC 2.4 -20 20 0.8 VDC VDC Additional Notes: 1. Vout can be increased up to 10% via the sense leads or up to 10% via the trim function, however total output voltage trim from all sources should not exceed 10% of VOUT(NOM), in order to insure specified operation of over-voltage protection circuitry. See "Output Voltage Adjust/Trim" for detailed information. MCD10004 Rev. 1.3, 19-Oct-09 Page 2 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output case it must be capable of sourcing or sinking up to 1 mA depending on the signal polarity. See the Start-up Information section for system timing waveforms associated with use of the ON/OFF pin. Operation Input and Output Impedance These power converters have been designed to be stable with no external capacitors when used in low inductance input and output circuits. However, in many applications, the inductance associated with the distribution from the power source to the input of the converter can affect the stability of the converter. The addition of a 100 F electrolytic capacitor with an ESR < 1 across the input helps ensure stability of the converter. In many applications, the user has to use decoupling capacitance at the load. The power converter will exhibit stable operation with external load capacitance up to 1000 F on 12 V, 2,200 F on 8.0 V, 10,000 F on 5.0 V - 6.0 V, and 15,000 F on 3.3 V - 1.0 V outputs. Remote Sense (Pins 5 and 7) The remote sense feature of the converter compensates for voltage drops occurring between the output pins of the converter and the load. The SENSE(-) (Pin 5) and SENSE(+) (Pin 7) pins should be connected at the load or at the point where regulation is required (see Fig. B). ON/OFF Vout (+) Rw 100 SENSE (+) TRIM Rload SENSE (-) ON/OFF (Pin 2) 10 Vin (-) The ON/OFF pin is used to turn the power converter on or off remotely via a system signal. There are two remote control options available, positive logic and negative logic and both are referenced to Vin(-). Typical connections are shown in Fig. A. SemiQ Family TM Converter (Top View) ON/OFF Vin Converter (Top View) Vin Vin (+) SemiQ Family TM Vin (+) Vout (+) SENSE (+) TRIM Rload SENSE (-) Vin (-) Rw Fig. B: Remote sense circuit configuration. If remote sensing is not required, the SENSE(-) pin must be connected to the Vout(-) pin (Pin 4), and the SENSE(+) pin must be connected to the Vout(+) pin (Pin 8) to ensure the converter will regulate at the specified output voltage. If these connections are not made, the converter will deliver an output voltage that is slightly higher than the specified value. Because the sense leads carry minimal current, large traces on the end-user board are not required. However, sense traces should be located close to a ground plane to minimize system noise and insure optimum performance. When wiring discretely, twisted pair wires should be used to connect the sense lines to the load to reduce susceptibility to noise. Vout (-) CONTROL INPUT Fig. A: Circuit configuration for ON/OFF function. The positive logic version turns on when the ON/OFF pin is at logic high and turns off when at logic low. The converter is on when the ON/OFF pin is left open. The negative logic version turns on when the pin is at logic low and turns off when the pin is at logic high. The ON/OFF pin can be hard wired directly to Vin(-) to enable automatic power up of the converter without the need of an external control signal. ON/OFF pin is internally pulled-up to 5 V through a resistor. A mechanical switch, open collector transistor, or FET can be used to drive the input of the ON/OFF pin. The device must be capable of sinking up to 0.2 mA at a low level voltage of 0.8 V. An external voltage source (20 V maximum) may be connected directly to the ON/OFF input, in which MCD10004 Rev. 1.3, 19-Oct-09 Vout (-) The converter's output overvoltage protection (OVP) senses the voltage across Vout(+) and Vout(-), and not across the sense lines, so the resistance (and resulting voltage drop) between the output pins of the converter and the load should be minimized to prevent unwanted triggering of the OVP. When utilizing the remote sense feature, care must be taken not to exceed the maximum allowable output power capability of the converter, equal to the product of the nominal output voltage and the allowable output current for the given conditions. When using remote sense, the output voltage at the converter can be increased by as much as 10% above the nominal rating in order to maintain the required voltage across the load. Therefore, the designer must, if necessary, Page 3 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output decrease the maximum current (originally obtained from the derating curves) by the same percentage to ensure the converter's actual output power remains at or below the maximum allowable output power. Vin (+) SemiQ Family TM Converter (Top View) ON/OFF Vin Vout (+) SENSE (+) R T-INCR TRIM Output Voltage Adjust /TRIM (Pin 6) Vin (-) The converter's output voltage can be adjusted up 10% or down 20% for Vout 1.5 V, and 10% for Vout = 1.2 V and 1.0 V, relative to the rated output voltage by the addition of an externally connected resistor. For output voltages 3.3 V, trim up to 10% is guaranteed only at Vin 20 V, and it is marginal (8% to 10%) at Vin = 18 V depending on load current. The TRIM pin should be left open if trimming is not being used. To minimize noise pickup, a 0.1 F capacitor is connected internally between the TRIM and SENSE(-) pins. To increase the output voltage, refer to Fig. C. A trim resistor, RT-INCR, should be connected between the TRIM (Pin 6) and SENSE(+) (Pin 7), with a value of: RTINCR 5.11(100 )VONOM 626 10.22 [k] (1.5 -12V) 1.225 RTINCR 485 [k] (1.2V) RTINCR 323 2 [k] (1.0V) Vout (-) Fig. C: Configuration for increasing output voltage. To decrease the output voltage (Fig. D), a trim resistor, RTDECR, should be connected between the TRIM (Pin 6) and SENSE(-) (Pin 5), with a value of: RTDECR 511 10.22 || [k] (1.0 - 12V) where, RTDECR Required value of trim-down resistor [k] and is as defined above. Note: The above equations for calculation of trim resistor values match those typically used in conventional industrystandard quarter bricks and one-eighth bricks. Converters with output voltage 1.2 V and 1.0 V have specific trim schematic and equations, to provide the customers with the flexibility of second sourcing. For these converters, the last character of part number is "T". More information about trim feature, including corresponding schematic portions, can be found in Application Note 103. where, SemiQ Family TM Vin (+) RTINCR Required value of trim-up resistor k] VONOM Nominal value of output voltage [V] Converter (Top View) Vin ON/OFF Vout (+) SENSE (+) TRIM SENSE (-) Rload SENSE (-) (VO-REQ VO -NOM) X 100 [%] VO -NOM Vin (-) Rload R T-DECR Vout (-) Fig. D: Configuration for decreasing output voltage. VOREQ Desired (trimmed) output voltage [V]. When trimming up, care must be taken not to exceed the converter`s maximum allowable output power. See previous section for a complete discussion of this requirement. Trimming/sensing beyond 110% of the rated output voltage is not an acceptable design practice, as this condition could cause unwanted triggering of the output overvoltage protection (OVP) circuit. The designer should ensure that the difference between the voltages across the converter's output pins and its sense pins does not exceed 10% of VOUT(NOM), or: [VOUT() VOUT()] [VSENSE() VSENSE()] VO - NOM X 10% [V] This equation is applicable for any condition of output sensing and/or output trim. MCD10004 Rev. 1.3, 19-Oct-09 Page 4 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output Protection Features Output Voltage Input Undervoltage Lockout 3.3V 12V - 5.0V, 2.5V 2.0V - 1.0V Input undervoltage lockout is standard with this converter. The converter will shut down when the input voltage drops below a pre-determined voltage. The input voltage must be at least 17.5V for the converter to turn on. Once the converter has been turned on, it will shut off when the input voltage drops below 15V. This feature is beneficial in preventing deep discharging of batteries used in telecom applications. Output Overcurrent Protection (OCP) The converter is protected against overcurrent or short circuit conditions. Upon sensing an overcurrent condition, the converter will switch to constant current operation and thereby begin to reduce output voltage. When the output voltage drops below 50% of the nominal value of output voltage, the converter will shut down. Once the converter has shut down, it will attempt to restart nominally every 100 ms with a typical 1-2% duty cycle. The attempted restart will continue indefinitely until the overload or short circuit conditions are removed or the output voltage rises above 50% of its nominal value. 8A 6A 4A If one input fuse is used for a group of modules, the maximum fuse rating should not exceed 15-A (ASQ modules are UL approved with up to a 15-A fuse). Electromagnetic Compatibility (EMC) EMC requirements must be met at the end-product system level, as no specific standards dedicated to EMC characteristics of board mounted component dc-dc converters exist. However, Power-One tests its converters to several system level standards, primary of which is the more stringent EN55022, Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement. With the addition of a simple external filter (see application notes), all versions of the ASQ24 Series of converters pass the requirements of Class B conducted emissions per EN55022 and FCC, and meet at a minimum, Class A radiated emissions per EN 55022 and Class B per FCC Title 47CFR, Part 15-J. Please contact di/dt Applications Engineering for details of this testing. Characterization Output Overvoltage Protection (OVP) The converter will shut down if the output voltage across Vout(+) (Pin 8) and Vout(-) (Pin 4) exceeds the threshold of the OVP circuitry. The OVP circuitry contains its own reference, independent of the output voltage regulation loop. Once the converter has shut down, it will attempt to restart every 100 ms until the OVP condition is removed. Overtemperature Protection (OTP) The converter will shut down under an overtemperature condition to protect itself from overheating caused by operation outside the thermal derating curves, or operation in abnormal conditions such as system fan failure. After the converter has cooled to a safe operating temperature, it will automatically restart. Safety Requirements The converters meet North American and International safety regulatory requirements per UL60950 and EN60950. Basic Insulation is provided between input and output. To comply with safety agencies requirements, an input line fuse must be used external to the converter. The table below provides the recommended fuse rating for use with this family of products. MCD10004 Rev. 1.3, 19-Oct-09 Fuse Rating General Information The converter has been characterized for many operational aspects, to include thermal derating (maximum load current as a function of ambient temperature and airflow) for vertical and horizontal mounting, efficiency, start-up and shutdown parameters, output ripple and noise, transient response to load step-change, overload and short circuit. The figures are numbered as Fig. x.y, where x indicates the different output voltages, and y is associated with a specific plot (y = 1 for the vertical thermal derating, ...). For example, Fig. x.1 will refer to the vertical thermal derating for all the output voltages in general. The following pages contain specific plots or waveforms associated with the converter. Additional comments for specific data are provided below. Test Conditions All data presented were taken with the converter soldered to a test board, specifically a 0.060" thick printed wiring board (PWB) with four layers. The top and bottom layers were not metalized. The two inner layers, comprising two-ounce copper, were used to provide traces for connectivity to the converter. Page 5 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output The lack of metalization on the outer layers as well as the limited thermal connection ensured that heat transfer from the converter to the PWB was minimized. This provides a worst-case but consistent scenario for thermal derating purposes. All measurements requiring airflow were made in vertical and horizontal wind tunnel facilities using Infrared (IR) thermography and thermocouples for thermometry. Ensuring components on the converter do not exceed their ratings is important to maintaining high reliability. If one anticipates operating the converter at or close to the maximum loads specified in the derating curves, it is prudent to check actual operating temperatures in the application. Thermographic imaging is preferable; if this capability is not available, then thermocouples may be used. Power-One recommends the use of AWG #40 gauge thermocouples to ensure measurement accuracy. Careful routing of the thermocouple leads will further minimize measurement error. Refer to Figure H for optimum measuring thermocouple location. Thermal Derating Load current vs. ambient temperature and airflow rates are given in Fig. x.1 for through-hole version. Ambient temperature was varied between 25C and 85C, with airflow rates from 30 to 500 LFM (0.15 to 2.5m/s), and vertical and horizontal converter mounting. For each set of conditions, the maximum load current was defined as the lowest of: Efficiency Fig. x.5 shows the efficiency vs. load current plot for ambient temperature of 25 C, airflow rate of 300 LFM (1.5 m/s) with vertical mounting and input voltages of 18 V, 24 V and 36 V. Also, a plot of efficiency vs. load current, as a function of ambient temperature with Vin = 24 V, airflow rate of 200 LFM (1 m/s) with vertical mounting is shown in Fig. x.6. Power Dissipation Fig. x.7 shows the power dissipation vs. load current plot for Ta = 25 C, airflow rate of 300 LFM (1.5 m/s) with vertical mounting and input voltages of 18 V, 24 V and 36 V. Also, a plot of power dissipation vs. load current, as a function of ambient temperature with Vin = 24 V, airflow rate of 200 LFM (1 m/s) with vertical mounting is shown in Fig. x.8. Start-up Output voltage waveforms, during the turn-on transient using the ON/OFF pin for full rated load currents (resistive load) are shown without and with external load capacitance in Fig. x.9 and Fig. x.10, respectively. Ripple and Noise (i) The output current at which any FET junction temperature does not exceed a maximum specified temperature (120 C) as indicated by the thermographic image, or Fig. x.13 shows the output voltage ripple waveform, measured at full rated load current with a 10 F tantalum and 1 F ceramic capacitor across the output. Note that all output voltage waveforms are measured across a 1 F ceramic capacitor. (ii) The nominal rating of the converter (4 A on 12 V, 5.3 A on 8.0 V, 8 A on 6.0 V, 10 A on 5.0 V, and 15 A on 3.3 - 1.0V). The input reflected ripple current waveforms are obtained using the test setup shown in Fig x.14. The corresponding waveforms are shown in Fig. x.15 and Fig. x.16. During normal operation, derating curves with maximum FET temperature less than or equal to 120 C should not be exceeded. Temperature on the PCB at the thermocouple location shown in Fig. H should not exceed 118 C in order to operate inside the derating curves. Fig. H: Location of the thermocouple for thermal testing. MCD10004 Rev. 1.3, 19-Oct-09 Page 6 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output V IN Start-up Information (using negative ON/OFF) Scenario #1: Initial Start-up From Bulk Supply ON/OFF function enabled, converter started via application of VIN. See Figure E. Time Comments t0 ON/OFF pin is ON; system front end power is toggled on, VIN to converter begins to rise. t1 VIN crosses Under-Voltage Lockout protection circuit threshold; converter enabled. t2 Converter begins to respond to turn-on command (converter turn-on delay). t3 Converter VOUT reaches 100% of nominal value. For this example, the total converter start-up time (t3- t1) is typically 4 ms. Scenario #2: Initial Start-up Using ON/OFF Pin With VIN previously powered, converter started via ON/OFF pin. See Figure F. Time Comments t0 VINPUT at nominal value. t1 Arbitrary time when ON/OFF pin is enabled (converter enabled). t2 End of converter turn-on delay. t3 Converter VOUT reaches 100% of nominal value. For this example, the total converter start-up time (t3- t1) is typically 4 ms. Scenario #3: Turn-off and Restart Using ON/OFF Pin With VIN previously powered, converter is disabled and then enabled via ON/OFF pin. See Figure G. Time Comments t0 VIN and VOUT are at nominal values; ON/OFF pin ON. t1 ON/OFF pin arbitrarily disabled; converter output falls to zero; turn-on inhibit delay period (100 ms typical) is initiated, and ON/OFF pin action is internally inhibited. t2 ON/OFF pin is externally re-enabled. If (t2- t1) 100 ms, external action of ON/OFF pin is locked out by start-up inhibit timer. If (t2- t1) > 100 ms, ON/OFF pin action is internally enabled. t3 Turn-on inhibit delay period ends. If ON/OFF pin is ON, converter begins turn-on; if off, converter awaits ON/OFF pin ON signal; see Figure F. t4 End of converter turn-on delay. t5 Converter VOUT reaches 100% of nominal value. For the condition, (t2- t1) 100 ms, the total converter start-up time (t5- t2) is typically 104 ms. For (t2- t1) > 100 ms, start-up will be typically 4 ms after release of ON/OFF pin. MCD10004 Rev. 1.3, 19-Oct-09 ON/OFF STATE OFF ON V OUT t1 t2 t0 t t3 Fig. E: Start-up scenario #1 VIN ON/OFF STATE OFF ON VOUT t0 t1 t2 t t3 Fig. F: Start-up scenario #2. V IN 100 ms ON/OFF STATE OFF Page 7 of 70 ON V OUT t0 t1 t2 t3 t4 t t5 Fig. G: Start-up scenario #3. www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output Electrical Specifications: ASQ24T/S04120 (12 Volts Out) Conditions: TA=25C, Airflow=300 LFM (1.5 m/s), Vin=24VDC, Vout=12 VDC unless otherwise specified. PARAMETER INPUT CHARACTERISTICS Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection NOTES MIN 4 ADC, 12 VDC Out @ 18 VDC In Vin = 24V, converter disabled Vin = 24V, converter enabled 25MHz bandwidth 120Hz TYP MAX UNITS 3.1 ADC mADC mADC mAPK-PK dB 12.000 12.120 VDC 4 4 10 10 12.180 120 1000 4 5.5 10 1 mV mV VDC mVPK-PK F ADC ADC A Arms 3 100 6 TBD OUTPUT CHARACTERISTICS Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current 11.880 2 Over line, load and temperature Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) 11.820 90 0 Non-latching Non-latching. Short=10m. Non-latching 5 7.5 Co = 1 F ceramic 1 F ceramic 150 200 20 mV mV s 87 87 % % DYNAMIC RESPONSE Load Change 25% of Iout Max, di/dt = 0.1 A/S di/dt = 5 A/S Setting Time to 1% EFFICIENCY 100% Load 50% Load Additional Notes: 2. -40C to 85C MCD10004 Rev. 1.3, 19-Oct-09 Page 8 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output 5 5 4 4 Load Current [Adc] Load Current [Adc] ASQ24T/S04120 (12 Volts Out) 3 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 2 1 3 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 2 1 0 0 20 30 40 50 60 70 80 20 90 30 60 70 80 90 Fig. 12V.2: Available load current vs. ambient air temperature and airflow rates for ASQ24T04120 converter with B height pins mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 5 5 4 4 Load Current [Adc] Load Current [Adc] Fig. 12V.1: Available load current vs. ambient air temperature and airflow rates for ASQ24T04120 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 3 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 1 50 Ambient Temperature [C] Ambient Temperature [C] 2 40 3 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 2 1 0 0 20 30 40 50 60 70 80 90 30 40 50 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 12V.3: Available load current vs. ambient temperature and airflow rates for ASQ24S04120 converter mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. MCD10004 Rev. 1.3, 19-Oct-09 20 Page 9 of 70 Fig. 12V.4: Available load current vs. ambient temperature and airflow rates for ASQ24S04120 converter mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output 0.95 0.95 0.90 0.90 0.85 0.85 Efficiency Efficiency ASQ24T/S04120 (12 Volts Out) 0.80 0.75 0.80 0.75 36 V 24 V 18 V 70 C 55 C 40 C 0.70 0.70 0.65 0.65 0 1 2 3 4 0 5 1 3 4 5 Load Current [Adc] Load Current [Adc] Fig. 12V.6: Efficiency vs. load current and ambient temperature for ASQ24T/S04120 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Fig. 12V.5: Efficiency vs. load current and input voltage for ASQ24T/S04120 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. 10.00 10.00 8.00 Power Dissipation [W] 8.00 Power Dissipation [W] 2 6.00 4.00 36 V 24 V 18 V 2.00 6.00 4.00 70 C 55 C 40 C 2.00 0.00 0.00 0 1 2 3 4 0 5 2 3 4 5 Load Current [Adc] Load Current [Adc] Fig. 12V.7: Power dissipation vs. load current and input voltage for ASQ24T/S04120 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. MCD10004 Rev. 1.3, 19-Oct-09 1 Fig. 12V.8: Power dissipation vs. load current and ambient temperature for ASQ24T/S04120 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 10 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S04120 (12 Volts Out) Fig. 12V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (5 V/div.). Time scale: 1 ms/div. Fig. 12V.10: Turn-on transient at full rated load current (resistive) plus 1,000F at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (5 V/div.). Time scale: 2 ms/div. Fig. 12V.11: Output voltage response to load current stepchange (1A - 2A - 1A) at Vin = 24V. Top trace: output voltage (200 mV/div.). Bottom trace: load current (1 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.5 ms/div. Fig. 12V.12: Output voltage response to load current stepchange (1A - 2A - 1A) at Vin = 24V. Top trace: output voltage (200 mV/div.). Bottom trace: load current (1 A/div.). Current slew rate: 5 A/s. Co = 1 F ceramic. Time scale: 0.5 ms/div. MCD10004 Rev. 1.3, 19-Oct-09 Page 11 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S04120 (12 Volts Out) iS 10 H source inductance Vsource iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC/DC Converter 1 F ceramic Vout capacitor Fig. 12V.14: Test setup for measuring input reflected ripple currents, ic and is. Fig. 12V.13: Output voltage ripple (50 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1uF ceramic and Vin = 24V. Time scale: 1 s/div. Fig. 12V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 12V.14 for test setup. Time scale: 1 s/div. MCD10004 Rev. 1.3, 19-Oct-09 Fig. 12V.16: Input reflected ripple current, is (10 mA/div.), measured through 10H at the source at full rated load current and Vin = 24V. Refer to Fig. 12V.14 for test setup. Time scale: 1s/div. Page 12 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S04120 (12 Volts Out) 15 Vout [Vdc] 10 5 0 0 1 2 3 4 5 6 Iout [Adc] Fig. 12V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. MCD10004 Rev. 1.3, 19-Oct-09 Fig. 12V.18: Load current (top trace, 5 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 24V. Bottom trace (5 A/div., 1 ms/div.) is an expansion of the on-time portion of the top trace. Page 13 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output Electrical Specifications: ASQ24T/S05080 (8.0 Volts Out) Conditions: TA=25C, Airflow=300 LFM (1.5 m/s), Vin=24 VDC, Vout=8.0 VDC unless otherwise specified. PARAMETER INPUT CHARACTERISTICS NOTES Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection MIN 5.3 ADC, 8.0 VDC Out @ 18 VDC In Vin = 24 V, converter disabled Vin = 24 V, converter enabled 25MHz bandwidth 120Hz TYP MAX UNITS 2.8 ADC mADC mADC mAPK-PK dB 8.000 8.080 VDC 4 4 10 10 8.120 100 2200 5.3 6.75 12 1 mV mV VDC mVPK-PK F ADC ADC A Arms 2.6 68 6 TBD OUTPUT CHARACTERISTICS Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current 7.920 2 Over line, load and temperature Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) 7.880 70 0 Non-latching Non-latching. Short=10m. Non-latching 6.25 10 Co = 1 F ceramic Co = 94 F tant. + 1 F ceramic 160 160 400 mV mV s 85.5 87 % % DYNAMIC RESPONSE Load Change 25% of Iout Max, di/dt = 0.1 A/S di/dt = 5 A/S Setting Time to 1% EFFICIENCY 100% Load 50% Load -40C to 85C 6 0.95 5 0.90 4 0.85 Efficiency Load Current [Adc] Additional Notes: 2. 3 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 2 1 0.80 0.75 36 V 24 V 18 V 0.70 0 0.65 20 30 40 50 60 70 80 90 0 Ambient Temperature [C] 2 3 4 5 6 Load Current [Adc] Fig. 8.0V.1: Available load current vs. ambient air temperature and airflow rates for ASQ24T05080 converter with D height pins mounted vertically with Vin = 24 V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. MCD10004 Rev. 1.3, 19-Oct-09 1 Fig. 8.0V.2: Efficiency vs. load current and input voltage for ASQ24T/S05080 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. Page 14 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output Electrical Specifications: ASQ24T/S08060 (6.0 Volts Out) Conditions: TA=25C, Airflow=300 LFM (1.5 m/s), Vin=24VDC, Vout=6.0 VDC unless otherwise specified. PARAMETER INPUT CHARACTERISTICS Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection NOTES MIN 8 ADC, 6.0 VDC Out @ 18 VDC In Vin = 24V, converter disabled Vin = 24V, converter enabled 25MHz bandwidth 120Hz TYP MAX UNITS 3.1 ADC mADC mADC mAPK-PK dB 6.000 6.060 VDC 2 2 5 5 6.090 60 10,000 8 11.5 25 2.5 mV mV VDC mVPK-PK F ADC ADC A Arms 2.6 88 6 TBD OUTPUT CHARACTERISTICS Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current 5.940 2 Over line, load and temperature Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) 5.910 45 0 Non-latching Non-latching. Short=10m. Non-latching 10 15 Co = 1 F ceramic Co = 450 F tant. + 1 F ceramic 100 80 100 mV mV s 89 89 % % DYNAMIC RESPONSE Load Change 25% of Iout Max, di/dt = 0.1 A/S di/dt = 5 A/S Setting Time to 1% EFFICIENCY 100% Load 50% Load Additional Notes: 2. -40C to 85C MCD10004 Rev. 1.3, 19-Oct-09 Page 15 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output 10 10 8 8 Load Current [Adc] Load Current [Adc] ASQ24T/S08060 (6.0 Volts Out) 6 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 4 2 6 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 4 2 0 0 20 30 40 50 60 70 80 90 20 30 Ambient Temperature [C] 10 8 8 Load Current [Adc] Load Current [Adc] 60 70 80 90 Fig. 6.0V.2: Available load current vs. ambient air temperature and airflow rates for ASQ24T08060 converter with B height pins mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 10 6 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 2 50 Ambient Temperature [C] Fig. 6.0V.1: Available load current vs. ambient air temperature and airflow rates for ASQ24T08060 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 4 40 6 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 4 2 0 0 20 30 40 50 60 70 80 90 Ambient Temperature [C] 30 40 50 60 70 80 90 Ambient Temperature [C] Fig. 6.0V.3: Available load current vs. ambient temperature and airflow rates for ASQ24S08060 converter mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. MCD10004 Rev. 1.3, 19-Oct-09 20 Page 16 of 70 Fig. 6.0V.4: Available load current vs. ambient temperature and airflow rates for ASQ24S08060 converter mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S08060 (6.0 Volts Out) 0.95 0.95 0.90 0.90 0.85 Efficiency Efficiency 0.85 0.80 0.75 36 V 24 V 18 V 0.80 0.75 70 C 55 C 40 C 0.70 0.70 0.65 0 2 4 6 8 0.65 10 0 Load Current [Adc] 2 4 6 8 10 Load Current [Adc] Fig. 6.0V.6: Efficiency vs. load current and ambient temperature for ASQ24T/S08060 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). 10.00 10.00 8.00 8.00 Power Dissipation [W] Power Dissipation [W] Fig. 6.0V.5: Efficiency vs. load current and input voltage for ASQ24T/S08060 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. 6.00 4.00 72 V 48 V 36 V 2.00 6.00 4.00 70 C 55 C 40 C 2.00 0.00 0.00 0 2 4 6 8 0 10 4 6 8 10 Load Current [Adc] Load Current [Adc] Fig. 6.0V.7: Power dissipation vs. load current and ambient temperature for ASQ24T/S08060 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. MCD10004 Rev. 1.3, 19-Oct-09 2 Fig. 6.0V.8: Power dissipation vs. load current and ambient temperature for ASQ24T/S08060 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 17 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S08060 (6.0 Volts Out) Fig. 6.0V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (2 V/div.). Time scale: 1 ms/div. Fig. 6.0V.10: Turn-on transient at full rated load current (resistive) plus 10,000F at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (2 V/div.). Time scale: 2 ms/div. Fig. 6.0V.11: Output voltage response to load current stepchange (2A - 4A - 2A) at Vin = 24V. Top trace: output voltage (100mV/div.). Bottom trace: load current (2A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. Fig. 6.0V.12: Output voltage response to load current stepchange (2A - 4A - 2A) at Vin = 24V. Top trace: output voltage (100mV/div.). Bottom trace: load current (2A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. MCD10004 Rev. 1.3, 19-Oct-09 Page 18 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S08060 (6.0 Volts Out) iS 10 H source inductance Vsource iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC/DC Converter 1 F ceramic Vout capacitor Fig. 6.0V.13: Output voltage ripple (50 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1uF ceramic and Vin = 24V. Time scale: 1 s/div. Fig. 6.0V.14: Test setup for measuring input reflected ripple currents, ic and is. Fig. 6.0V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 6.0V.14 for test setup. Time scale: 1 s/div. Fig. 6.0V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 24V. Refer to Fig. 6.0V.14 for test setup. Time scale: 1s/div. MCD10004 Rev. 1.3, 19-Oct-09 Page 19 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S08060 (6.0 Volts Out) 8 Vout [Vdc] 6 4 2 0 0 3 6 9 12 Iout [Adc] Fig. 6.0V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. MCD10004 Rev. 1.3, 19-Oct-09 Fig. 6.0V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 24V. Bottom trace (20 A/div., 2 ms/div.) is an expansion of the on-time portion of the top trace. Page 20 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output Electrical Specifications: ASQ24T/S10050 (5.0 Volts Out) Conditions: TA=25C, Airflow=300 LFM (1.5 m/s), Vin=24VDC, Vout=5.0 VDC unless otherwise specified. PARAMETER INPUT CHARACTERISTICS Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection NOTES MIN 10 ADC, 5.0 VDC Out @ 18 VDC In Vin = 24V, converter disabled Vin = 24V, converter enabled 25MHz bandwidth 120Hz TYP MAX UNITS 3.3 ADC mADC mADC mAPK-PK dB 5.000 5.050 VDC 2 2 5 5 5.075 80 10,000 10 14 30 3 mV mV VDC mVPK-PK F ADC ADC A Arms 3 93 6 TBD OUTPUT CHARACTERISTICS Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current 4.950 2 Over line, load and temperature Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) 4.925 45 0 Non-latching Non-latching. Short=10m. Non-latching 12.5 20 Co = 1 F ceramic Co = 450 F tant. + 1 F ceramic 140 90 200 mV mV s 86 87 % % DYNAMIC RESPONSE Load Change 25% of Iout Max, di/dt = 0.1 A/S di/dt = 5 A/S Setting Time to 1% EFFICIENCY 100% Load 50% Load Additional Notes: 2. -40C to 85C MCD10004 Rev. 1.3, 19-Oct-09 Page 21 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output 12 12 10 10 Load Current [Adc] Load Current [Adc] ASQ24T/S10050 (5.0 Volts Out) 8 6 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 4 2 8 6 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 4 2 0 0 20 30 40 50 60 70 80 90 20 30 Ambient Temperature [C] 12 10 10 Load Current [Adc] Load Current [Adc] 60 70 80 90 Fig. 5.0V.2: Available load current vs. ambient air temperature and airflow rates for ASQ24T10050 converter with B height pins mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 12 8 6 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 2 50 Ambient Temperature [C] Fig. 5.0V.1: Available load current vs. ambient air temperature and airflow rates for ASQ24T10050 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 4 40 8 6 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 4 2 0 0 20 30 40 50 60 70 80 90 30 40 50 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 5.0V.3: Available load current vs. ambient temperature and airflow rates for ASQ24S10050 converter mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. MCD10004 Rev. 1.3, 19-Oct-09 20 Page 22 of 70 Fig. 5.0V.4: Available load current vs. ambient temperature and airflow rates for ASQ24S10050 converter mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S10050 (5.0 Volts Out) 0.95 0.95 0.90 0.90 0.85 Efficiency Efficiency 0.85 0.80 0.75 0.80 0.75 36 V 24 V 18 V 70 C 55 C 40 C 0.70 0.70 0.65 0.65 0 2 4 6 8 10 0 12 2 4 8 10 12 Load Current [Adc] Load Current [Adc] Fig. 5.0V.6: Efficiency vs. load current and ambient temperature for ASQ24T/S10050 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Fig. 5.0V.5: Efficiency vs. load current and input voltage for ASQ24T/S10050 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. 10.00 10.00 8.00 Power Dissipation [W] 8.00 Power Dissipation [W] 6 6.00 4.00 36 V 24 V 18 V 2.00 6.00 4.00 70 C 55 C 40 C 2.00 0.00 0.00 0 2 4 6 8 10 0 12 4 6 8 10 12 Load Current [Adc] Load Current [Adc] Fig. 5.0V.7: Power dissipation vs. load current and input voltage for ASQ24T/S10050 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. MCD10004 Rev. 1.3, 19-Oct-09 2 Fig. 5.0V.8: Power dissipation vs. load current and ambient temperature for ASQ24T/S10050 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 23 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S10050 (5.0 Volts Out) Fig. 5.0V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (2 V/div.). Time scale: 2 ms/div. Fig. 5.0V.11: Output voltage response to load current stepchange (2.5A - 5A - 2.5A) at Vin = 24V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (2 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. MCD10004 Rev. 1.3, 19-Oct-09 Page 24 of 70 Fig. 5.0V.10: Turn-on transient at full rated load current (resistive) plus 10,000 F at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (2 V/div.). Time scale: 2 ms/div. Fig. 5.0V.12: Output voltage response to load current stepchange (2.5A - 5A - 2.5A) at Vin = 24V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (2 A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S10050 (5.0 Volts Out) iS 10 H source inductance Vsource Fig. 5.0V.13: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1uF ceramic and Vin = 24V. Time scale: 1 s/div. Fig. 5.0V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 5.0V.14 for test setup. Time scale: 1 s/div. MCD10004 Rev. 1.3, 19-Oct-09 Page 25 of 70 iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC/DC Converter 1 F ceramic Vout capacitor Fig. 5.0V.14: Test setup for measuring input reflected ripple currents, ic and is. Fig. 5.0V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 24V. Refer to Fig. 5.0V.14 for test setup. Time scale: 1s/div. www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S10050 (5.0 Volts Out) 6.0 5.0 Vout [Vdc] 4.0 3.0 2.0 1.0 0 0 5 10 15 Iout [Adc] Fig. 5.0V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. MCD10004 Rev. 1.3, 19-Oct-09 Fig. 5.0V.18: Load current (top trace, 10 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 24V. Bottom trace (10 A/div., 1 ms/div.) is an expansion of the on-time portion of the top trace. Page 26 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output Electrical Specifications: ASQ24T/S15033 (3.3 Volts Out) Conditions: TA=25C, Airflow=300 LFM (1.5 m/s), Vin=24VDC, Vout=3.3 VDC unless otherwise specified. PARAMETER INPUT CHARACTERISTICS Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection NOTES MIN 15 ADC, 3.3 VDC Out @ 18 VDC In Vin = 24V, converter disabled Vin = 24V, converter enabled 25MHz bandwidth 120Hz TYP MAX UNITS 3.2 ADC mADC mADC mAPK-PK dB 3.300 3.333 VDC 2 2 5 5 3.350 50 15,000 15 20 40 5.3 mV mV VDC mVPK-PK F ADC ADC A Arms 3 100 6 TBD OUTPUT CHARACTERISTICS Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current 3.267 2 Over line, load and temperature Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) 3.250 30 0 Non-latching Non-latching. Short=10m. Non-latching 18 30 Co = 1 F ceramic Co = 450 F tant. + 1 F ceramic 100 100 100 mV mV s 88 88 % % DYNAMIC RESPONSE Load Change 25% of Iout Max, di/dt = 0.1 A/S di/dt = 5 A/S Setting Time to 1% EFFICIENCY 100% Load 50% Load Additional Notes: 2. -40C to 85C MCD10004 Rev. 1.3, 19-Oct-09 Page 27 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output 20 20 15 15 Load Current [Adc] Load Current [Adc] ASQ24T/S15033 (3.3 Volts Out) 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 20 30 40 50 60 70 80 90 20 30 Ambient Temperature [C] 60 70 80 90 Fig. 3.3V.2: Available load current vs. ambient air temperature and airflow rates for ASQ24T15033 converter with B height pins mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 20 20 15 15 Load Current [Adc] Load Current [Adc] 50 Ambient Temperature [C] Fig. 3.3V.1: Available load current vs. ambient air temperature and airflow rates for ASQ24T15033 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 40 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 0 20 30 40 50 60 70 80 90 30 40 50 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 3.3V.3: Available load current vs. ambient temperature and airflow rates for ASQ24S15033 converter mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. MCD10004 Rev. 1.3, 19-Oct-09 20 Page 28 of 70 Fig. 3.3V.4: Available load current vs. ambient temperature and airflow rates for ASQ24S15033 converter mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output 0.95 0.95 0.90 0.90 0.85 0.85 Efficiency Efficiency ASQ24T/S15033 (3.3 Volts Out) 0.80 0.75 0.80 0.75 36 V 24 V 18 V 70 C 55 C 40 C 0.70 0.70 0.65 0.65 0 2 4 6 8 10 12 14 0 16 2 4 8 10 12 14 16 Load Current [Adc] Load Current [Adc] Fig. 3.3V.5: Efficiency vs. load current and input voltage for ASQ24T/S15033 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. Fig. 3.3V.6: Efficiency vs. load current and ambient temperature for ASQ24T/S15033 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). 8.00 Power Dissipation [W] 8.00 Power Dissipation [W] 6 6.00 4.00 36 V 24 V 18 V 2.00 6.00 4.00 70 C 55 C 40 C 2.00 0.00 0.00 0 2 4 6 8 10 12 14 0 16 4 6 8 10 12 14 16 Load Current [Adc] Load Current [Adc] Fig. 3.3V.7: Power dissipation vs. load current and input voltage for ASQ24T/S15033 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. MCD10004 Rev. 1.3, 19-Oct-09 2 Fig. 3.3V.8: Power dissipation vs. load current and ambient temperature for ASQ24T/S15033 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 29 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15033 (3.3 Volts Out) Fig. 3.3V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). Time scale: 2 ms/div. Fig. 3.3V.11: Output voltage response to load current stepchange (3.75A - 7.5A - 3.75A) at Vin = 24V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. MCD10004 Rev. 1.3, 19-Oct-09 Page 30 of 70 Fig. 3.3V.10: Turn-on transient at full rated load current (resistive) plus 10,000 F at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). Time scale: 2 ms/div. Fig. 3.3V.12: Output voltage response to load current stepchange (3.75A - 7.5A - 3.75A) at Vin = 24V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15033 (3.3 Volts Out) iS 10 H source inductance Vsource Fig. 3.3V.13: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1uF ceramic and Vin = 24V. Time scale: 1 s/div. Fig. 3.3V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 3.3V.14 for test setup. Time scale: 1 s/div. MCD10004 Rev. 1.3, 19-Oct-09 iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC/DC Converter 1 F ceramic Vout capacitor Fig. 3.3V.14: Test setup for measuring input reflected ripple currents, ic and is. Fig. 3.3V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 24V. Refer to Fig. 3.3V.14 for test setup. Time scale: 1s/div. Page 31 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15033 (3.3 Volts Out) 4 Vout [Vdc] 3 2 1 0 0 5 10 15 20 Iout [Adc] Fig. 3.3V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. MCD10004 Rev. 1.3, 19-Oct-09 Fig. 3.3V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 24V. Bottom trace (20 A/div., 1 ms/div.) is an expansion of the on-time portion of the top trace. Page 32 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output Electrical Specifications: ASQ24T/S15025 (2.5 Volts Out) Conditions: TA=25C, Airflow=300 LFM (1.5 m/s), Vin=24VDC, Vout=2.5 VDC unless otherwise specified. PARAMETER INPUT CHARACTERISTICS Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection NOTES MIN 15 ADC, 2.5 VDC Out @ 18 VDC In Vin = 24V, converter disabled Vin = 24V, converter enabled 25MHz bandwidth 120Hz TYP MAX UNITS 2.5 ADC mADC mADC mAPK-PK dB 2.500 2.525 VDC 2 2 5 5 2.538 50 15,000 15 20 40 5.3 mV mV VDC mVPK-PK F ADC ADC A Arms 3 67 6 TBD OUTPUT CHARACTERISTICS Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current 2.475 2 Over line, load and temperature Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) 2.462 30 0 Non-latching Non-latching. Short=10m. Non-latching 18 30 Co = 1 F ceramic) Co = 450 F tant. + 1 F ceramic 110 120 150 mV mV s 86.5 87 % % DYNAMIC RESPONSE Load Change 25% of Iout Max, di/dt = 0.1 A/S di/dt = 5 A/S Setting Time to 1% EFFICIENCY 100% Load 50% Load Additional Notes: 2. -40C to 85C MCD10004 Rev. 1.3, 19-Oct-09 Page 33 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output 20 20 15 15 Load Current [Adc] Load Current [Adc] ASQ24T/S15025 (2.5 Volts Out) 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 0 20 30 40 50 60 70 80 20 90 30 60 70 80 90 Fig. 2.5V.2: Available load current vs. ambient air temperature and airflow rates for ASQ24T15025 converter with B height pins mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. Fig. 2.5V.1: Available load current vs. ambient air temperature and airflow rates for ASQ24T15025 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 20 20 15 15 Load Current [Adc] Load Current [Adc] 50 Ambient Temperature [C] Ambient Temperature [C] 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 40 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 0 20 30 40 50 60 70 80 90 30 40 50 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 2.5V.3: Available load current vs. ambient temperature and airflow rates for ASQ24S15025 converter mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. MCD10004 Rev. 1.3, 19-Oct-09 20 Page 34 of 70 Fig. 2.5V.4: Available load current vs. ambient temperature and airflow rates for ASQ24S15025 converter mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15025 (2.5 Volts Out) 0.95 0.95 0.90 0.90 0.85 Efficiency Efficiency 0.85 0.80 0.75 0.80 0.75 36 V 24 V 18 V 70 C 55 C 40 C 0.70 0.70 0.65 0.65 0 2 4 6 8 10 12 14 0 16 2 4 8 10 12 14 16 Load Current [Adc] Load Current [Adc] Fig. 2.5V.5: Efficiency vs. load current and input voltage for ASQ24T/S15025 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. Fig. 2.5V.6: Efficiency vs. load current and ambient temperature for ASQ24T/S15025 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). 8.00 Power Dissipation [W] 8.00 Power Dissipation [W] 6 6.00 4.00 36 V 24 V 18 V 2.00 6.00 4.00 70 C 55 C 40 C 2.00 0.00 0.00 0 2 4 6 8 10 12 14 0 16 4 6 8 10 12 14 16 Load Current [Adc] Load Current [Adc] Fig. 2.5V.7: Power dissipation vs. load current and input voltage for ASQ24T/S15025 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. MCD10004 Rev. 1.3, 19-Oct-09 2 Fig. 2.5V.8: Power dissipation vs. load current and ambient temperature for ASQ24T/S15025 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 35 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15025 (2.5 Volts Out) Fig. 2.5V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). Time scale: 1 ms/div. Fig. 2.5V.10: Turn-on transient at full rated load current (resistive) plus 10,000 F at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). Time scale: 1 ms/div. Fig. 2.5V.11: Output voltage response to load current stepchange (3.75 A - 7.5 A - 3.75 A) at Vin = 24V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. Fig. 2.5V.12: Output voltage response to load current stepchange (3.75 A - 7.5 A - 3.75 A) at Vin = 24V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. MCD10004 Rev. 1.3, 19-Oct-09 Page 36 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15025 (2.5 Volts Out) iS 10 H source inductance Vsource iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC/DC Converter 1 F ceramic Vout capacitor Fig. 2.5V.13: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1uF ceramic and Vin = 24V. Time scale: 1 s/div. Fig. 2.5V.14: Test setup for measuring input reflected ripple currents, ic and is. Fig. 2.5V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 2.5V.14 for test setup. Time scale: 1 s/div. Fig. 2.5V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 24V. Refer to Fig. 2.5V.14 for test setup. Time scale: 1s/div. MCD10004 Rev. 1.3, 19-Oct-09 Page 37 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15025 (2.5 Volts Out) 3 Vout [Vdc] 2 1 0 0 5 10 15 20 Iout [Adc] Fig. 2.5V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. MCD10004 Rev. 1.3, 19-Oct-09 Fig. 2.5V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 24V. Bottom trace (20 A/div., 1 ms/div.) is an expansion of the on-time portion of the top trace. Page 38 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output Electrical Specifications: ASQ24T/S15020 (2.0 Volts Out) Conditions: TA=25C, Airflow=300 LFM (1.5 m/s), Vin=24VDC, Vout=2.0 VDC unless otherwise specified. PARAMETER INPUT CHARACTERISTICS Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection NOTES MIN 15 ADC, 2.0 VDC Out @ 18 VDC In Vin = 24V, converter disabled Vin = 24V, converter enabled 25MHz bandwidth 120Hz TYP MAX UNITS 2 ADC mADC mADC mAPK-PK dB 2.000 2.02 VDC 2 2 5 5 2.030 50 15,000 15 20 40 5.3 mV mV VDC mVPK-PK F ADC ADC A Arms 3 57 6 TBD OUTPUT CHARACTERISTICS Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current 1.98 2 Over line, load and temperature Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) 1.970 30 0 Non-latching Non-latching. Short=10m. Non-latching 18 30 Co = 1 F ceramic Co = 450 F tant. + 1 F ceramic 100 120 150 mV mV s 85 85 % % DYNAMIC RESPONSE Load Change 25% of Iout Max, di/dt = 0.1 A/S di/dt = 5 A/S Setting Time to 1% EFFICIENCY 100% Load 50% Load Additional Notes: 2. -40C to 85C MCD10004 Rev. 1.3, 19-Oct-09 Page 39 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output 20 20 15 15 Load Current [Adc] Load Current [Adc] ASQ24T/S15020 (2.0 Volts Out) 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 20 30 40 50 60 70 80 90 20 30 Ambient Temperature [C] 60 70 80 90 Fig. 2.0V.2: Available load current vs. ambient air temperature and airflow rates for ASQ24T15020 converter with B height pins mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 20 20 15 15 Load Current [Adc] Load Current [Adc] 50 Ambient Temperature [C] Fig. 2.0V.1: Available load current vs. ambient air temperature and airflow rates for ASQ24T15020 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 40 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 0 20 30 40 50 60 70 80 90 30 40 50 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 2.0V.3: Available load current vs. ambient temperature and airflow rates for ASQ24S15020 converter mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. MCD10004 Rev. 1.3, 19-Oct-09 20 Page 40 of 70 Fig. 2.0V.4: Available load current vs. ambient temperature and airflow rates for ASQ24S15020 converter mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15020 (2.0 Volts Out) 0.95 0.95 0.90 0.90 0.85 Efficiency Efficiency 0.85 0.80 0.75 0.80 0.75 36 V 24 V 18 V 70 C 55 C 40 C 0.70 0.70 0.65 0.65 0 2 4 6 8 10 12 14 0 16 2 4 8 10 12 14 16 Load Current [Adc] Load Current [Adc] Fig. 2.0V.5: Efficiency vs. load current and input voltage for ASQ24T/S15020 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. Fig. 2.0V.6: Efficiency vs. load current and ambient temperature for ASQ24T/S15020 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). 6.00 6.00 5.00 Power Dissipation [W] 5.00 Power Dissipation [W] 6 4.00 3.00 2.00 36 V 24 V 18 V 4.00 3.00 2.00 70 C 55 C 40 C 1.00 1.00 0.00 0.00 0 2 4 6 8 10 12 14 0 16 4 6 8 10 12 14 16 Load Current [Adc] Load Current [Adc] Fig. 2.0V.7: Power dissipation vs. load current and input voltage for ASQ24T/S15020 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. MCD10004 Rev. 1.3, 19-Oct-09 2 Fig. 2.0V.8: Power dissipation vs. load current and ambient temperature for ASQ24T/S15020 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 41 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15020 (2.0 Volts Out) Fig. 2.0V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). Time scale: 1 ms/div. Fig. 2.0V.11: Output voltage response to load current stepchange (3.75A - 7.5A - 3.75A) at Vin = 24V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. MCD10004 Rev. 1.3, 19-Oct-09 Fig. 2.0V.10: Turn-on transient at full rated load current (resistive) plus 10,000F at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). Time scale: 1 ms/div. Fig. 2.0V.12: Output voltage response to load current stepchange (3.75A - 7.5A - 3.75A) at Vin = 24V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. Page 42 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15020 (2.0 Volts Out) iS 10 H source inductance Vsource iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC/DC Converter 1 F ceramic Vout capacitor Fig. 2.0V.13: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1uF ceramic and Vin = 24V. Time scale: 1 s/div. Fig. 2.0V.14: Test setup for measuring input reflected ripple currents, ic and is. Fig. 2.0V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 2.0V.14 for test setup. Time scale: 1 s/div. Fig. 2.0V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 24V. Refer to Fig. 2.0V.14 for test setup. Time scale: 1s/div. MCD10004 Rev. 1.3, 19-Oct-09 Page 43 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15020 (2.0 Volts Out) 3 Vout [Vdc] 2 1 0 0 5 10 15 20 Iout [Adc] Fig. 2.0V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. MCD10004 Rev. 1.3, 19-Oct-09 Fig. 2.0V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 24V. Bottom trace (20 A/div., 2 ms/div.) is an expansion of the on-time portion of the top trace. Page 44 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output Electrical Specifications: ASQ24T/S15018 (1.8 Volts Out) Conditions: TA=25C, Airflow=300 LFM (1.5 m/s), Vin=24VDC, Vout=1.8 VDC unless otherwise specified. PARAMETER INPUT CHARACTERISTICS Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection NOTES MIN 15 ADC, 1.8 VDC Out @ 18 VDC In Vin = 24V, converter disabled Vin = 24V, converter enabled 25MHz bandwidth 120Hz TYP MAX UNITS 1.8 ADC mADC mADC mAPK-PK dB 1.800 1.818 VDC 2 2 4 5 1.827 50 15,000 15 20 40 5.3 mV mV VDC mVPK-PK F ADC ADC A Arms 3 53 6 TBD OUTPUT CHARACTERISTICS Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current 1.782 2 Over line, load and temperature Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) 1.773 30 0 Non-latching Non-latching. Short=10m. Non-latching 18 30 Co = 1 F ceramic Co = 450 F tant. + 1 F ceramic 100 120 150 mV mV s 84.5 84 % % DYNAMIC RESPONSE Load Change 25% of Iout Max, di/dt = 0.1 A/S di/dt = 5 A/S Setting Time to 1% EFFICIENCY 100% Load 50% Load Additional Notes: 2. -40C to 85C MCD10004 Rev. 1.3, 19-Oct-09 Page 45 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output 20 20 15 15 Load Current [Adc] Load Current [Adc] ASQ24T/S15018 (1.8 Volts Out) 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 20 30 40 50 60 70 80 90 20 30 Ambient Temperature [C] 60 70 80 90 Fig. 1.8V.2: Available load current vs. ambient air temperature and airflow rates for ASQ24T15018 converter with B height pins mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 20 20 15 15 Load Current [Adc] Load Current [Adc] 50 Ambient Temperature [C] Fig. 1.8V.1: Available load current vs. ambient air temperature and airflow rates for ASQ24T15018 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 40 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 0 20 30 40 50 60 70 80 90 30 40 50 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 1.8V.3: Available load current vs. ambient temperature and airflow rates for ASQ24S15018 converter mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. MCD10004 Rev. 1.3, 19-Oct-09 20 Page 46 of 70 Fig. 1.8V.4: Available load current vs. ambient temperature and airflow rates for ASQ24S15018 converter mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output 0.95 0.95 0.90 0.90 0.85 0.85 Efficiency Efficiency ASQ24T/S15018 (1.8 Volts Out) 0.80 0.75 36 V 24 V 18 V 0.80 0.75 0.70 70 C 55 C 40 C 0.70 0.65 0 2 4 6 8 10 12 14 0.65 16 0 2 4 Load Current [Adc] 8 10 12 14 16 Load Current [Adc] Fig. 1.8V.5: Efficiency vs. load current and input voltage for ASQ24T/S15018 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. Fig. 1.8V.6: Efficiency vs. load current and ambient temperature for ASQ24T/S15018 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). 6.00 6.00 5.00 Power Dissipation [W] 5.00 Power Dissipation [W] 6 4.00 3.00 2.00 36 V 24 V 18 V 4.00 3.00 2.00 70 C 55 C 40 C 1.00 1.00 0.00 0.00 0 2 4 6 8 10 12 14 0 16 MCD10004 Rev. 1.3, 19-Oct-09 4 6 8 10 12 14 16 Load Current [Adc] Load Current [Adc] Fig. 1.8V.7: Power dissipation vs. load current and input voltage for ASQ24T/S15018 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. 2 Fig. 1.8V.8: Power dissipation vs. load current and ambient temperature for ASQ24T/S15018 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 47 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15018 (1.8 Volts Out) Fig. 1.8V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). Time scale: 1 ms/div. Fig. 1.8V.10: Turn-on transient at full rated load current (resistive) plus 10,000F at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (1 V/div.). Time scale: 1 ms/div. Fig. 1.8V.11: Output voltage response to load current stepchange (3.75A - 7.5A - 3.75A) at Vin = 24V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. Fig. 1.8V.12: Output voltage response to load current stepchange (3.75A - 7.5A - 3.75A) at Vin = 24V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. MCD10004 Rev. 1.3, 19-Oct-09 Page 48 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15018 (1.8 Volts Out) iS 10 H source inductance Vsource iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC/DC Converter 1 F ceramic Vout capacitor Fig. 1.8V.13: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1uF ceramic and Vin = 24V. Time scale: 1 s/div. Fig. 1.8V.14: Test setup for measuring input reflected ripple currents, ic and is. Fig. 1.8V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 1.8V.14 for test setup. Time scale: 1 s/div. Fig. 1.8V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 24V. Refer to Fig. 1.8V.14 for test setup. Time scale: 1s/div. MCD10004 Rev. 1.3, 19-Oct-09 Page 49 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15018 (1.8 Volts Out) 3 Vout [Vdc] 2 1 0 0 5 10 15 20 Iout [Adc] Fig. 1.8V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. MCD10004 Rev. 1.3, 19-Oct-09 Fig. 1.8V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 24V. Bottom trace (20 A/div., 2 ms/div.) is an expansion of the on-time portion of the top trace. Page 50 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output Electrical Specifications: ASQ24T/S15015 (1.5 Volts Out) Conditions: TA=25C, Airflow=300 LFM (1.5 m/s), Vin=24VDC, Vout=1.5 VDC unless otherwise specified. PARAMETER INPUT CHARACTERISTICS Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection NOTES MIN 15 ADC, 1.5 VDC Out @ 18 VDC In Vin = 24V, converter disabled Vin = 24V, converter enabled 25MHz bandwidth 120Hz TYP MAX UNITS 1.6 ADC mADC mADC mAPK-PK dB 1.500 1.515 VDC 2 2 4 4 1.523 50 15,000 15 20 40 5.3 mV mV VDC mVPK-PK F ADC ADC A Arms 2.6 48 6 TBD OUTPUT CHARACTERISTICS Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current 1.485 2 Over line, load and temperature Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) 1.477 30 0 Non-latching Non-latching. Short=10m. Non-latching 18 30 Co = 1 F ceramic Co = 450 F tant. + 1 F ceramic 80 120 170 mV mV s 83 83 % % DYNAMIC RESPONSE Load Change 25% of Iout Max, di/dt = 0.1 A/S di/dt = 5 A/S Setting Time to 1% EFFICIENCY 100% Load 50% Load Additional Notes: 2. -40C to 85C MCD10004 Rev. 1.3, 19-Oct-09 Page 51 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output 20 20 15 15 Load Current [Adc] Load Current [Adc] ASQ24T/S15015 (1.5 Volts Out) 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 20 30 40 50 60 70 80 90 20 30 Ambient Temperature [C] 60 70 80 90 Fig. 1.5V.2: Available load current vs. ambient air temperature and airflow rates for ASQ24T15015 converter with B height pins mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 20 20 15 15 Load Current [Adc] Load Current [Adc] 50 Ambient Temperature [C] Fig. 1.5V.1: Available load current vs. ambient air temperature and airflow rates for ASQ24T15015 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 40 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 0 20 30 40 50 60 70 80 90 30 40 50 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 1.5V.3: Available load current vs. ambient temperature and airflow rates for ASQ24S15015 converter mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. MCD10004 Rev. 1.3, 19-Oct-09 20 Page 52 of 70 Fig. 1.5V.4: Available load current vs. ambient temperature and airflow rates for ASQ24S15015 converter mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output 0.95 0.95 0.90 0.90 0.85 0.85 Efficiency Efficiency ASQ24T/S15015 (1.5 Volts Out) 0.80 0.75 0.80 0.75 36 V 24 V 18 V 0.70 70 C 55 C 40 C 0.70 0.65 0.65 0 2 4 6 8 10 12 14 16 0 2 4 Load Current [Adc] 8 10 12 14 16 Load Current [Adc] Fig. 1.5V.5: Efficiency vs. load current and input voltage for ASQ24T/S15015 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. Fig. 1.5V.6: Efficiency vs. load current and ambient temperature for ASQ24T/S15015 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). 6.00 6.00 5.00 5.00 Power Dissipation [W] Power Dissipation [W] 6 4.00 3.00 2.00 36 V 24 V 18 V 4.00 3.00 2.00 70 C 55 C 40 C 1.00 1.00 0.00 0.00 0 2 4 6 8 10 12 14 0 16 Fig. 1.5V.7: Power dissipation vs. load current and input voltage for ASQ24T/S15015 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. MCD10004 Rev. 1.3, 19-Oct-09 2 4 6 8 10 12 14 16 Load Current [Adc] Load Current [Adc] Fig. 1.5V.8: Power dissipation vs. load current and ambient temperature for ASQ24T/S15015 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 53 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15015 (1.5 Volts Out) Fig. 1.5V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (0.5 V/div.). Time scale: 1 ms/div. Fig. 1.5V.10: Turn-on transient at full rated load current (resistive) plus 10,000 F at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (0.5 V/div.). Time scale: 1 ms/div. Fig. 1.5V.11: Output voltage response to load current stepchange (3.75 A - 7.5 A - 3.75 A) at Vin = 24V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. Fig. 1.5V.12: Output voltage response to load current stepchange (3.75 A - 7.5 A - 3.75 A) at Vin = 24V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. MCD10004 Rev. 1.3, 19-Oct-09 Page 54 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15015 (1.5 Volts Out) iS 10 H source inductance Vsource iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC/DC Converter 1 F ceramic Vout capacitor Fig. 1.5V.13: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1uF ceramic and Vin = 24V. Time scale: 1 s/div. Fig. 1.5V.14: Test setup for measuring input reflected ripple currents, ic and is. Fig. 1.5V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 1.5V.14 for test setup. Time scale: 1 s/div. Fig. 1.5V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 24V. Refer to Fig. 1.5V.14 for test setup. Time scale: 1s/div. MCD10004 Rev. 1.3, 19-Oct-09 Page 55 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15015 (1.5 Volts Out) 2.0 Vout [Vdc] 1.5 1.0 0.5 0 0 5 10 15 20 Iout [Adc] Fig. 1.5V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. MCD10004 Rev. 1.3, 19-Oct-09 Fig. 1.5V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 24V. Bottom trace (20 A/div., 2 ms/div.) is an expansion of the on-time portion of the top trace. Page 56 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output Electrical Specifications: ASQ24T/S15012 (1.2 Volts Out) Conditions: TA=25C, Airflow=300 LFM (1.5 m/s), Vin=24VDC, Vout=1.2 VDC unless otherwise specified. PARAMETER INPUT CHARACTERISTICS Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection NOTES MIN 15 ADC, 1.2 VDC Out @ 18 VDC In Vin = 24V, converter disabled Vin = 24V, converter enabled 25MHz bandwidth 120Hz TYP MAX UNITS 1.25 ADC mADC mADC mAPK-PK dB 1.200 1.212 VDC 1 1 3 3 1.218 50 15,000 15 20 40 5.3 mV mV VDC mVPK-PK F ADC ADC A Arms 2.6 43 6 TBD OUTPUT CHARACTERISTICS Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current 1.188 2 Over line, load and temperature Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) 1.182 30 0 Non-latching Non-latching. Short=10m. Non-latching 18 30 Co = 1 F ceramic Co = 450 F tant. + 1 F ceramic 90 120 100 mV mV s 81 81 % % DYNAMIC RESPONSE Load Change 25% of Iout Max, di/dt = 0.1 A/S di/dt = 5 A/S Setting Time to 1% EFFICIENCY 100% Load 50% Load Additional Notes: 2. -40C to 85C MCD10004 Rev. 1.3, 19-Oct-09 Page 57 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output 20 20 15 15 Load Current [Adc] Load Current [Adc] ASQ24T/S15012 (1.2 Volts Out) 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 20 30 40 50 60 70 80 90 20 30 Ambient Temperature [C] 60 70 80 90 Fig. 1.2V.2: Available load current vs. ambient air temperature and airflow rates for ASQ24T15012 converter with B height pins mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 20 20 15 15 Load Current [Adc] Load Current [Adc] 50 Ambient Temperature [C] Fig. 1.2V.1: Available load current vs. ambient air temperature and airflow rates for ASQ24T15012 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 40 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 0 20 30 40 50 60 70 80 90 30 40 50 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 1.2V.3: Available load current vs. ambient temperature and airflow rates for ASQ24S15012 converter mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. MCD10004 Rev. 1.3, 19-Oct-09 20 Page 58 of 70 Fig. 1.2V.4: Available load current vs. ambient temperature and airflow rates for ASQ24S15012 converter mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output 0.95 0.95 0.90 0.90 0.85 0.85 Efficiency Efficiency ASQ24T/S15012 (1.2 Volts Out) 0.80 0.75 0.80 0.75 36 V 24 V 18 V 0.70 70 C 55 C 40 C 0.70 0.65 0.65 0 2 4 6 8 10 12 14 16 0 2 4 Load Current [Adc] 8 10 12 14 16 Load Current [Adc] Fig. 1.2V.5: Efficiency vs. load current and input voltage for ASQ24T/S15012 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. Fig. 1.2V.6: Efficiency vs. load current and ambient temperature for ASQ24T/S15012 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). 6.00 6.00 5.00 5.00 Power Dissipation [W] Power Dissipation [W] 6 4.00 3.00 2.00 36 V 24 V 18 V 4.00 3.00 2.00 70 C 55 C 40 C 1.00 1.00 0.00 0.00 0 2 4 6 8 10 12 14 0 16 Fig. 1.2V.7: Power dissipation vs. load current and input voltage for ASQ24T/S15012 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. MCD10004 Rev. 1.3, 19-Oct-09 2 4 6 8 10 12 14 16 Load Current [Adc] Load Current [Adc] Fig. 1.2V.8: Power dissipation vs. load current and ambient temperature for ASQ24T/S15012 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 59 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15012 (1.2 Volts Out) Fig. 1.2V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (0.5 V/div.). Time scale: 1 ms/div. Fig. 1.2V.10: Turn-on transient at full rated load current (resistive) plus 10,000 F at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (0.5 V/div.). Time scale: 1 ms/div. Fig. 1.2V.11: Output voltage response to load current stepchange (3.75 A - 7.5 A - 3.75 A) at Vin = 24V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. Fig. 1.2V.12: Output voltage response to load current stepchange (3.75 A - 7.5 A - 3.75 A) at Vin = 24V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. MCD10004 Rev. 1.3, 19-Oct-09 Page 60 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15012 (1.2 Volts Out) iS 10 H source inductance Vsource iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC/DC Converter 1 F ceramic Vout capacitor Fig. 1.2V.13: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1uF ceramic and Vin = 24V. Time scale: 1 s/div. Fig. 1.2V.14: Test setup for measuring input reflected ripple currents, ic and is. Fig. 1.2V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 1.2V.14 for test setup. Time scale: 1 s/div. Fig. 1.2V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 24V. Refer to Fig. 1.2V.14 for test setup. Time scale: 1s/div. MCD10004 Rev. 1.3, 19-Oct-09 Page 61 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15012 (1.2 Volts Out) 1.5 Vout [Vdc] 1.0 0.5 0 0 5 10 15 20 Iout [Adc] Fig. 1.2V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. MCD10004 Rev. 1.3, 19-Oct-09 Fig. 1.2V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 24V. Bottom trace (20 A/div., 2 ms/div.) is an expansion of the on-time portion of the top trace. Page 62 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output Electrical Specifications: ASQ24T/S15010 (1.0 Volt Out) Conditions: TA=25C, Airflow=300 LFM (1.5 m/s), Vin=24VDC, Vout=1.0 VDC unless otherwise specified. PARAMETER INPUT CHARACTERISTICS Maximum Input Current Input Stand-by Current Input No Load Current (0 load on the output) Input Reflected-Ripple Current Input Voltage Ripple Rejection NOTES MIN 15 ADC, 1.0 VDC Out @ 18 VDC In Vin = 24V, converter disabled Vin = 24V, converter enabled 25MHz bandwidth 120Hz TYP MAX UNITS 1.1 ADC mADC mADC mAPK-PK dB 1.000 1.010 VDC 1 1 2 3 1.015 50 15,000 15 20 40 5.3 mV mV VDC mVPK-PK F ADC ADC A Arms 2.6 43 7.5 TBD OUTPUT CHARACTERISTICS Output Voltage Set Point (no load) Output Regulation Over Line Over Load Output Voltage Range Output Ripple and Noise - 25MHz bandwidth External Load Capacitance Output Current Range Current Limit Inception Peak Short-Circuit Current RMS Short-Circuit Current 0.990 2 Over line, load and temperature Full load + 10 F tantalum + 1 F ceramic Plus full load (resistive) 0.985 30 0 Non-latching Non-latching. Short=10m. Non-latching 18 30 Co = 1 F ceramic Co = 450 F tant. + 1 F ceramic 80 140 180 mV mV s 79 79 % % DYNAMIC RESPONSE Load Change 25% of Iout Max, di/dt = 0.1 A/S di/dt = 5 A/S Setting Time to 1% EFFICIENCY 100% Load 50% Load Additional Notes: 2. -40C to 85C MCD10004 Rev. 1.3, 19-Oct-09 Page 63 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output 20 20 15 15 Load Current [Adc] Load Current [Adc] ASQ24T/S15010 (1.0 Volt Out) 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 20 30 40 50 60 70 80 90 20 30 Ambient Temperature [C] 60 70 80 90 Fig. 1.0V.2: Available load current vs. ambient air temperature and airflow rates for ASQ24T15010 converter with B height pins mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 20 20 15 15 Load Current [Adc] Load Current [Adc] 50 Ambient Temperature [C] Fig. 1.0V.1: Available load current vs. ambient air temperature and airflow rates for ASQ24T15010 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 40 10 500 LFM (2.5 m/s) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 30 LFM (0.15 m/s) 5 0 0 20 30 40 50 60 70 80 90 30 40 50 60 70 80 90 Ambient Temperature [C] Ambient Temperature [C] Fig. 1.0V.3: Available load current vs. ambient temperature and airflow rates for ASQ24S15010 converter mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. MCD10004 Rev. 1.3, 19-Oct-09 20 Page 64 of 70 Fig. 1.0V.4: Available load current vs. ambient temperature and airflow rates for ASQ24S15010 converter mounted horizontally with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature 120C. www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output 0.95 0.95 0.90 0.90 0.85 0.85 Efficiency Efficiency ASQ24T/S15010 (1.0 Volt Out) 0.80 0.75 0.80 0.75 36 V 24 V 18 V 0.70 70 C 55 C 40 C 0.70 0.65 0.65 0 2 4 6 8 10 12 14 16 0 2 4 Load Current [Adc] 8 10 12 14 16 Load Current [Adc] Fig. 1.0V.5: Efficiency vs. load current and input voltage for ASQ24T/S15010 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. Fig. 1.0V.6: Efficiency vs. load current and ambient temperature for ASQ24T/S15010 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). 6.00 6.00 5.00 5.00 Power Dissipation [W] Power Dissipation [W] 6 4.00 3.00 2.00 36 V 24 V 18 V 4.00 3.00 2.00 70 C 55 C 40 C 1.00 1.00 0.00 0.00 0 2 4 6 8 10 12 14 0 16 Fig. 1.0V.7: Power dissipation vs. load current and input voltage for ASQ24T/S15010 converter mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. MCD10004 Rev. 1.3, 19-Oct-09 2 4 6 8 10 12 14 16 Load Current [Adc] Load Current [Adc] Fig. 1.0V.8: Power dissipation vs. load current and ambient temperature for ASQ24T/S15010 converter mounted vertically with Vin = 24V and air flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s). Page 65 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15010 (1.0 Volt Out) Fig. 1.0V.9: Turn-on transient at full rated load current (resistive) with no output capacitor at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (0.5 V/div.). Time scale: 1 ms/div. Fig. 1.0V.10: Turn-on transient at full rated load current (resistive) plus 10,000F at Vin = 24V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (0.5 V/div.). Time scale: 1 ms/div. Fig. 1.0V.11: Output voltage response to load current stepchange (3.75 A - 7.5 A - 3.75 A) at Vin = 24V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic. Time scale: 0.2 ms/div. Fig. 1.0V.12: Output voltage response to load current stepchange (3.75 A - 7.5 A - 3.75 A) at Vin = 24V. Top trace: output voltage (100 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 5 A/s. Co = 450 F tantalum + 1 F ceramic. Time scale: 0.2 ms/div. MCD10004 Rev. 1.3, 19-Oct-09 Page 66 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15010 (1.0 Volt Out) iS 10 H source inductance Vsource iC 33 F ESR <1 electrolytic capacitor SemiQ Family TM DC/DC Converter 1 F ceramic Vout capacitor Fig. 1.0V.13: Output voltage ripple (20 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1uF ceramic and Vin = 24V. Time scale: 1 s/div. Fig. 1.0V.14: Test setup for measuring input reflected ripple currents, ic and is. Fig. 1.0V.15: Input reflected ripple current, ic (100 mA/div.), measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 1.0V.14 for test setup. Time scale: 1 s/div. Fig. 1.0V.16: Input reflected ripple current, is (10 mA/div.), measured through 10 H at the source at full rated load current and Vin = 24V. Refer to Fig. 1.0V.14 for test setup. Time scale: 1s/div. MCD10004 Rev. 1.3, 19-Oct-09 Page 67 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output ASQ24T/S15010 (1.0 Volt Out) 1.5 Vout [Vdc] 1.0 0.5 0 0 5 10 15 20 Iout [Adc] Fig. 1.0V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. MCD10004 Rev. 1.3, 19-Oct-09 Fig. 1.0V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 m short circuit during restart, at Vin = 24V. Bottom trace (20 A/div., 2 ms/div.) is an expansion of the on-time portion of the top trace. Page 68 of 70 www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output Physical Information ASQ24S Platform Notes 8 1 7 TOP VIEW 2 6 All dimensions are in inches [mm] Connector Material: Copper Connector Finish: Tin/Lead over Nickel Converter Weight: 0.53 oz [15 g] Recommended Surface-Mount Pads: Min. 0.080" X 0.112" [2.03 x 2.84] Max. 0.092" X 0.124" [2.34 x 3.15] 5 3 4 SIDE VIEW Pad/Pin Connections Pad/Pin # 1 2 3 4 5 6 7 8 ASQ24S Pinout (Surface Mount) Height Option A B C D E 8 1 7 2 TOP VIEW 6 5 3 4 Function Vin (+) ON/OFF Vin (-) Vout (-) SENSE(-) TRIM SENSE(+) Vout (+) HT CL (Max. Height) (Min. Clearance) +0.000 [+0.00] +0.016 [+0.41] -0.038 [- 0.97] -0.000 [- 0.00] 0.319 [8.10] 0.030 [0.77] 0.352 [8.94] 0.063 [1.60] 0.516 [13.11] 0.227 [5.77] 0.127 [3.23] 0.416 [10.57] 0.298 [7.57] 0.009 [0.23] PL Pin Length Pin Option 0.005 [0.13] A B C SIDE VIEW 0.188 [4.77] 0.145 [3.68] 0.110 [2.79] ASQ24T Platform Notes ASQ24T Pinout (Through-hole) MCD10004 Rev. 1.3, 19-Oct-09 Page 69 of 70 All dimensions are in inches [mm] Pins 1-3 and 5-7 are O 0.040" [1.02] with O 0.078" [1.98] shoulder Pins 4 and 8 are O 0.062" [1.57] without shoulder Pin material: Brass Pin Finish: Tin/Lead over Nickel Converter Weight: 0.53 oz [15 g] www.power-one.com ASQ24 DC-DC Converter Series Data Sheet 18 to 36 VDC Input; 1.0 to 12 VDC Output Converter Part Numbering Scheme Product Series Input Voltage Mounting Scheme Rated Load Current Output Voltage ASQ 24 T 05 080 15 15 A (1.0 - 3.3 V) One-Eighth Brick Format S Surface Mount 18-36 V T Throughhole 10 10 A (5.0 V) 08 8 A (6.0 V) 05 5.3 A (8.0 V) 04 4 A (12.0 V) 1. 2. - 010 1.0 V 012 1.2 V 015 1.5 V 018 1.8 V 020 2.0 V 025 2.5 V 033 3.3 V 050 5.0 V 060 6.0 V 080 8.0 V 120 12.0 V ON/OFF Logic Maximum Height [HT] Pin Length [PL] Special Features N B A 0 SMT 0 0.00" 0 STD Through hole A 0.188" B 0.145" C 0.110" T Special 2 Trim (For 1.2V & 1.0V only) N Negative P Positive SMT S 0.289" Through hole A 0.319" B 0.352" C 0.516" D 0.416" E 0.298" The example above describes P/N ASQ24T05080-NBA0: 18-36 V input, through-hole mounting, 5.3 A @ 8.0V output, negative ON/OFF logic, a maximum height of 0.352", and a through the board pin length of 0.188". Please consult factory regarding availability of a specific version. For definitions, operation, and associated trim equations for all trim options, please refer to Application Note 103, Trim Feature for Isolated DC-DC Converters. Model numbers highlighted in yellow or shaded are not recommended for new designs. NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not designed, intended for use in, or authorized for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express written consent of the respective divisional president of Power-One, Inc. TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice. MCD10004 Rev. 1.3, 19-Oct-09 Page 70 of 70 www.power-one.com