FE The high performance 10A UIE48T10120 DC-DC converter provides a high efficiency single output, in a 1/8th brick package that is only 62% the size of the industry-standard quarter-brick. Specifically designed for operation in systems that have limited airflow and increased ambient temperatures, the UIE48T10120 converter utilizes the same pinout and Input / Output functionality of the industry-standard quarter-bricks. In addition, a baseplate / heat spreader feature is available (-xDxBx suffix) that provides an effective thermal interface for coldplate and heat sinking options. LI The UIE48T10120 converter thermal performance is accomplished through the use advanced circuits, packaging, and processing techniques to achieve ultra-high efficiency, excellent thermal management, and a low-body profile. F Operating from a wide-range 18-75V input, the UIE48T10120 converter utilizes digital control and provides a fully regulated 12V output voltage. Employing a standard power pinout, the UIE48T10120 converter is an ideal drop-in replacement for existing high current quarter-brick designs. Inclusion of this converter in a new design can result in significant board space and cost savings. The designer can expect reliability improvement over other available converters because of the UIE48T10120's optimized thermal efficiency. Key Features & Benefits EN D O Industry-standard eighth-brick pin-out Ultra wide input voltage range Delivers 120 W at 92.5% efficiency Paste In Hole (PIH) compatible Withstands 100V input transient for 100 ms Fixed-frequency operation On-board input differential LC-filter Start-up into pre-biased load No minimum load required Minimum of 2250 VDC I/O isolation Fully protected (OTP, OCP, OVP, UVLO) Positive or negative logic ON/OFF option Low height of 0.44" (11.18 mm) Weight: 32 g (without baseplate / heat spreader), 40 g (with baseplate / heat spreader) High reliability: MTBF = 14.3 million hours, calculated per Telcordia SR-332, Method I Case 1 Approved to the latest edition of the following standards: UL/CSA60950-1, IEC60950-1 and EN60950-1 Designed to meet Class B conducted emissions per FCC and EN55022 when used with external filter All materials meet UL94, V-0 flammability rating Applications Intermediate Bus Architectures Data communications/processing LAN/WAN Servers, storage, instrumentation, embedded equipment UIE48T10120 2 1. ELECTRICAL SPECIFICATIONS Conditions: TA = 25 C, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, Cin = 100 F, unless otherwise specified. PARAMETER NOTES MIN TYP MAX UNITS ABSOLUTE MAXIMUM RATINGS Continuous Input Voltage -0.3 Operating Temperature (See Derating Curves) Input to Output Isolation Voltage Input to Baseplate Output to Baseplate 85 C 1 -40 125 C C 125 2250 VDC 1500 VDC 1500 VDC M 10 Isolation Capacitance FEATURE CHARACTERISTICS Switching Frequency LI Isolation Resistance VDC -40 -55 ISOLATION CHARACTERISTICS VDC Ambient (TA) Component (TC) Storage Temperature 80 100 FE Transient (100ms) pF 250 Over Temperature Shutdown Non-latching Component (TC) 1 130 Auto-Restart Period Applies to all protection features 500 Turn-On Time from Vin Time from UVLO to Vo = 90%VOUT(NOM), Resistive load 100 130 ms Turn-On Time from ON/OFF Control Turn-On Time from Vin (w/ Co max.) Turn-On Time from ON/OFF Control (w/ Co max.) Time from ON to Vo = 90%VOUT(NOM), Resistive load Time from UVLO to Vo = 90%VOUT(NOM) Resistive load, CEXT = 4,700F load Time from ON to Vo = 90%VOUT(NOM) Resistive load, CEXT = 4,700F load Converter Off (logic low) 100 130 ms 100 130 ms 100 130 ms -15 0.8 VDC Converter On (logic high) 2.4 15 VDC Converter Off (logic low) 2.4 15 VDC Converter On (logic high) -15 0.8 VDC O F Non-latching ON/OFF Control (Negative Logic) 120 kHz Output Overvoltage Protection ON/OFF Control (Positive Logic) 115 750 130 % C ms EN D INPUT CHARACTERISTICS Operating Input Voltage Range 18 48 75 VDC Turn-on Threshold 16.8 17.2 17.8 VDC Turn-off Threshold 14.9 15.5 16.1 VDC Lockout Hysteresis Voltage 0.5 1.7 2.5 VDC 7.3 ADC mA Input Undervoltage Lockout Maximum Input Current Po = 120W @ 18VDC In Input Standby Current Vin = 48V, converter disabled Input No Load Current (No load on the output); Vin = 48V, converter enabled Input Reflected-Ripple Current, ic Vin = 48V, 20 MHz bandwidth, Po = 120W (Figs. 14,15, 16) Input Reflected-Ripple Current, iS Input Voltage Ripple Rejection 1 120 Hz 40 3 5 70 100 mA 1600 1900 mAPK-PK 500 600 mARMS 60 75 mAPK-PK 18 22 mARMS 45 dB Reference Figure G for component TC locations. tech.support@psbel.com UIE48T10120 3 OUTPUT CHARACTERISTICS Output Voltage Setpoint VIN = 48V, IOUT = 0A, TA = 25C Output Voltage Trim Range 2 Industry-std. equations Remote Sense Compensation 3 Percent of VOUT (NOM) 11.88 12.00 -20 12.12 VDC +10 % +10 % mV Output Regulation Over Line IOUT = 10A, TA = 25C 24 48 Over Load VIN = 48V, , TA = 25C 24 48 mV 12.36 VDC 50 150 mVPK-PK 25 50 4700 Over line, load and temperature Output Ripple and Noise 20 MHz bandwidth, IOUT = 10A, CEXT =10 F tantalum + 1 F ceramic Admissible External Load Capacitance 2 IOUT = 10A (resistive) CEXT ESR Output Current Range Current Limit Inception Non-latching Non-latching Short = 10 m RMS Short-Circuit Current 11.64 DYNAMIC RESPONSE 11 EFFICIENCY @ 100% Load 48VIN, TA = 25C, 300LFM 13 ADC 2.4 5 ARMS 400 650 mV 200 s 92.5 % 92 F @ 60% Load LI Settling Time to 1% of VOUT 12 0 1 0 50%-75%-50% of IOUT Max (di/dt = 0.1 A/s) CEXT = 100F electrolytic +10F tantalum + 1F ceramic Load Change 10 VRMS F m ADC FE Output Voltage Range PARAMETER ENVIRONMENTAL Operating Humidity Storage Humidity O 2. ENVIRONMENT AND MECHANICAL SPECIFICATIONS NOTES MIN TYP MAX UNITS Non-condensing 95 % Non-condensing 95 % EN D MECHANICAL Weight Without baseplate / heat spreader With baseplate / heat spreader 32 g 40 g Vibration GR-63-CORE, Sect. 5.4.2 1 g Shocks Half Sinewave, 3-axis 50 g RELIABILITY MTBF Telcordia SR-332, Method I Case 1 50% electrical stress, 40C components 14.3 MHrs EMI AND REGULATORY COMPLIANCE Conducted Emissions 2 3 CISPR 22 B with external EMI filter network For input voltage >22 V See "Input Output Impedance", Page 4 Europe, Middle East +353 61 225 977 North America +1 408 785 5200 (c) 2016 Bel Power Solutions & Protection BCD.00279_AE Asia-Pacific +86 755 298 85888 UIE48T10120 4 3. OPERATIONS 3.1. 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 some applications, the inductance associated with the distribution from the power source to the input of the converter can affect the stability of the converter. A 100 F electrolytic capacitor with adequate ESR based on input impedance is recommended to ensure stability of the converter. FE In many end applications, a high capacitance value is applied to the converter's output via distributed capacitors. The power converter will exhibit stable operation with external load capacitance up to 4700 F. 3.2. ON/OFF (PIN 2) LI 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 and negative logic, with both referenced to Vin(-). A typical connection is shown in Figure A. The positive logic version turns on when the ON/OFF pin is at a logic high or left open and turns off when it is at a logic low. See the Electrical Specifications for logic high/low definitions. F Fig. A: Typ. Circuit configuration for ON/OFF function. Vin (+) UIE48 Converter Vin O (Top View) ON/OFF Vin (-) Vout (+) SENSE (+) TRIM Rload SENSE (-) Vout (-) CONTROL INPUT EN D The negative logic version turns on when the ON/OFF pin is at a logic low and turns off when the pin is at logic high. To enable automatic power up of the converter without the need of an external control signal the ON/OFF pin can be hard wired directly to Vin(-) for N and left open for P version. A properly de-bounced 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 (15 V maximum) may be connected directly to the ON/OFF input, in which case it must be capable of sourcing or sinking up to 1 mA depending on the signal polarity. If optocoupler is used to control the on/off, then the ON/OFF pin should be tied to a 3V3 rail via 3.3kohm resistor to prevent optocoupler leakage from affecting the on/off function. See the Startup Information section for system timing waveforms associated with use of the ON/OFF pin. tech.support@psbel.com UIE48T10120 5 3.3. 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). Fig. B: Remote sense circuit configuration. UIE48 Vin (+) Converter Rw Vout (+) 100 Vin ON/OFF SENSE (+) TRI M SENSE (-) FE (Top View) Rload 10 Vin (-) Vout (-) LI Rw O F CAUTION If remote sensing is not utilized, 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 higher than the specified data sheet value. EN D Because the sense leads carry minimal current, large traces on the end-user board are not required. However, sense traces should be run side by side and located close to a ground plane to minimize system noise and ensure optimum performance. 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, which is 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, 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. 3.4. OUTPUT VOLTAGE ADJUST /TRIM (PIN 6) The output voltage can be adjusted up 10% or down 20%, relative to the rated output voltage by the addition of an externally connected resistor. 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 1.225 [k], Europe, Middle East +353 61 225 977 North America +1 408 785 5200 (c) 2016 Bel Power Solutions & Protection BCD.00279_AE Asia-Pacific +86 755 298 85888 UIE48T10120 6 where, RTINCR Required value of trim-up resistor k] VONOM Nominal value of output voltage [V] (VO-REQ VO-NOM ) X 100 VO -NOM [%] VOREQ Desired (trimmed) output voltage [V]. FE When trimming up, care must be taken not to exceed the converter`s maximum allowable output power. See the previous section for a complete discussion of this requirement. Fig. C: Configuration for increasing output voltage. Vin (+) UIE48 Converter Vin SENSE (+) LI (Top View) ON/OFF Vout (+) R T-INCR TRIM Rload SENSE (-) Vin (-) Vout (-) 511 10.22 || [k] O RTDECR F To decrease the output voltage (Fig. D), a trim resistor, RT-DECR, should be connected between the TRIM (Pin 6) and SENSE (-) (Pin 5), with a value of: where, RTDECR Required value of trim-down resistor [k] and is defined above. EN D Note: The above equations for calculation of trim resistor values match those typically used in conventional industry-standard eighth-bricks. Fig. D: Configuration for decreasing output voltage. Vin (+) Vin UIE48 Converter (Top View) ON/OFF Vin (-) Vout (+) SENSE (+) TRIM Rload R T-DECR SENSE (-) Vout (-) 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. tech.support@psbel.com UIE48T10120 7 4. PROTECTION FEATURES 4.1. INPUT UNDERVOLTAGE LOCKOUT (UVLO) Input undervoltage lockout is standard with this converter. The converter will shut down when the input voltage drops below a pre-determined voltage. 4.2. OUTPUT OVERCURRENT PROTECTION (OCP) FE The input voltage must be typically 17.2V for the converter to turn on. Once the converter has been turned on, it will shut off when the input voltage drops typically below 15.5V. This feature is beneficial in preventing deep discharging of batteries used in telecom applications. The converter is protected against overcurrent or short circuit conditions. Upon sensing an overcurrent condition, the converter will shut down after entering the constant current mode of operation, regardless of the value of the output voltage. LI Once the converter has shut down, it will enter hiccup mode with attempt to restart every 500 ms until the overload or short circuit conditions are removed. 4.3. OUTPUT OVERVOLTAGE PROTECTION (OVP) F The converter will shut down if the output voltage across Vout(+) and Vout(-) exceeds the threshold of the OVP circuitry. Once the converter has shut down, it will attempt to restart every 500 ms until the OVP condition is removed. 4.4. OVERTEMPERATURE PROTECTION (OTP) O 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. The converter will automatically restart after it has cooled to a safe operating temperature. 4.5. SAFETY REQUIREMENTS The converters are safety approved to UL/CSA60950-1 2nd Ed, EN60950-1 2nd Ed and IEC60950-1 2nd Ed. Basic Insulation is provided between input and output. EN D The converters have no internal fuse. To comply with safety agencies requirements, an input line fuse must be used external to the converter. The fuse must not be placed in the grounded input line. The UIE48 converter is UL approved for a fuse rating of 12.5 Amps. 4.6. 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, Bel Power Solutions 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. An effective internal LC differential filter significantly reduces input reflected ripple current, and improves EMC. With the addition of an external filter, the UIE48T10120 converter will pass the requirements of Class B conducted emissions per EN55022 and FCC requirements. Refer to Figures 18 - 20 for typical performance with external filter. Europe, Middle East +353 61 225 977 North America +1 408 785 5200 (c) 2016 Bel Power Solutions & Protection BCD.00279_AE Asia-Pacific +86 755 298 85888 UIE48T10120 8 4.7. STARTUP INFORMATION (USING NEGATIVE ON/OFF) Fig. E: Startup scenario #1. ON/OFF STATE LI V IN FE Scenario #1: Initial Startup 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 undervoltage 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 startup time (t3- t1) is typically 100 ms. OFF ON O F V OUT t0 t1 t2 t3 t EN D Scenario #2: Initial Startup Using ON/OFF Pin With VIN previously powered, converter started via ON/OFF pin. See Figure F. Time Comments t0 VIN 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 startup time (t3- t1) is typically 100 ms. tech.support@psbel.com UIE48T10120 9 Fig. F: Startup scenario #2. V IN OFF FE ON/OFF STATE ON V OUT t1 t2 5. CHARACTERIZATION t3 t LI t0 F 5.1. GENERAL INFORMATION O The converter has been characterized for many operational aspects, to include thermal derating (maximum load current as a function of ambient temperature and airflow), efficiency, startup and shutdown parameters, output ripple and noise, transient response to load step-change, overcurrent, and short circuit. The following pages contain specific plots or waveforms associated with the converter. Additional comments for specific data are provided below. 5.2. TEST CONDITIONS EN D 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, comprised of twoounce copper, were used to provide traces for connectivity to the converter. The lack of metallization 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 the vertical and horizontal wind tunnel 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. The use of AWG #40 gauge thermocouples is recommended to ensure measurement accuracy. Careful routing of the thermocouple leads will further minimize measurement error. Refer to Figure G for the optimum measuring thermocouple location. 5.3. THERMAL DERATING - AIR COOLED Load current vs. ambient temperature and airflow rates are given in Figures 1 for converter w/o baseplate / heat spreader, and in Figures 5 for converter with baseplate / heat spreader equipped with a .45" finned heat sink. Ambient temperature was varied between 25C and 85C, with airflow rates from 30 to 500LFM (0.15 to 2.5m/s) and with VIN=48V. Europe, Middle East +353 61 225 977 North America +1 408 785 5200 (c) 2016 Bel Power Solutions & Protection BCD.00279_AE Asia-Pacific +86 755 298 85888 UIE48T10120 10 Load current vs. ambient temperature and airflow rates are given in Figure 3 for a converter w/o baseplate / heat spreader. Ambient temperature was varied between 25C and 85C, with airflow rates from 30 to 500LFM (0.15 to 2.5m/s) and with VIN=24V. FE Note that the use of baseplate / heat spreader alone without heatsink or attachment to cold plate provides lower power rating then open frame due to the restriction of airflow across the module. For each set of conditions, the maximum load current was defined as the lowest of: (i) The output current at which any FET junction temperature does not exceed a maximum temperature of 125C as indicated by the thermal measurement. (ii) The output current at which the temperature at the thermocouple locations TC1 and TC2 do not exceed 125C (Fig.G). (iii) The nominal rating of the converter (10A/120W). Fig. G: Locations of the thermocouples for thermal testing. TC1 F LI TC2 5.4. EFFICIENCY O Figure 7 shows the efficiency vs. load current plot for ambient temperature (TA) of 25C and for converter w/o baseplate / heat spreader, air flowing from pin 3 to pin 1 at a rate of 300LFM (1.5m/s) with vertically mounting and input voltages of 18V, 24V, 36V, 48V, 60V and 75V. 5.5. POWER DISSIPATION EN D Figure 8 shows the power dissipation vs. load current plot for ambient temperature (TA) of 25C and for converter w/o baseplate / heat spreader, air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) with vertically mounting and input voltages of 18V, 24V, 36V, 48V, 60V and 75V. 5.6. STARTUP Output voltage waveforms, during the turn-on transient using the ON/OFF pin for full rated load currents (resistive load) are shown with and without external load capacitance in Figure 9 and 10, respectively. 5.7. RIPPLE AND NOISE Figure 13 shows the output voltage ripple waveform, measured at full rated load current with a 10F tantalum and a 1F ceramic capacitor across the output. Note that all output voltage waveforms are measured across the 1F ceramic capacitor. The input reflected-ripple current waveforms are obtained using the test setup shown in Figure 14. The corresponding waveforms are shown in Figure 15 and Figure 16. tech.support@psbel.com UIE48T10120 11 Fig. 1: Available load current vs. ambient air temperature and airflow rates for UIE48T10120 converter w/o baseplate mounted vertically with air flowing from pin 3 to pin 1, MOSFET temperature 125C, Vin=48V. Fig. 2: Power derating vs. ambient air temperature and airflow rates for UIE48T10120 converter w/o baseplate mounted vertically with air flowing from pin 3 to pin 1, MOSFET temperature 125C, Vin=48V 150.00 12.00 500 LFM 500 LFM 400 LFM 400 LFM 10.00 125.00 300 LFM 300 LFM 200 LFM 200 LFM 100.00 30 LFM 6.00 4.00 100 LFM 30 LFM 75.00 50.00 2.00 25.00 0.00 40.0 55.0 70.0 0.00 85.0 25.0 Ambient Temperature [ C ] Fig. 3: Available load current vs. ambient air temperature and airflow rates for UIE48T10120 converter w/o baseplate mounted vertically with air flowing from pin 3 to pin 1, MOSFET temperature 125C, Vin=24V 40.0 55.0 70.0 Ambient Temperature [C] 85.0 LI 25.0 FE 100 LFM Output Power [W] Load Current [Adc] 8.00 Fig. 4: Power derating vs. ambient air temperature and airflow rates for UIE48T10120 converter w/o baseplate mounted vertically with air flowing from pin 3 to pin 1, MOSFET temperature 125C, Vin=24V 12.00 150.00 500 LFM 500 LFM 400 LFM 400 LFM 125.00 F 10.00 300 LFM 300 LFM 200 LFM 200 LFM 30 LFM 6.00 4.00 2.00 0.00 25.0 40.0 55.0 70.0 Output Power [W] 100.00 100 LFM O Load Current [Adc] 8.00 50.00 25.00 0.00 85.0 25.0 EN D 12.00 500 LFM 40.0 55.0 Ambient Temperature [C] 70.0 85.0 Fig. 6: Power derating vs. ambient air temperature and airflow rates for UIE48T10120 converter with baseplate equipped with .45" finned hearsink mounted vertically with air flowing from pin 3 to pin 1, MOSFET temperature 125C, Vin=48V 150.00 500 LFM 400 LFM 10.00 300 LFM 400 LFM 125.00 300 LFM 200 LFM 100 LFM 30 LFM 6.00 4.00 2.00 200 LFM 100.00 Output Power [W] 8.00 Load Current [Adc] 30 LFM 75.00 Ambient Temperature [ C ] Fig. 5: Available load current vs. ambient air temperature and airflow rates for UIE48T10120 converter with baseplate equipped with .45" finned heatsink mounted vertically with air flowing from pin 3 to pin 1, MOSFET temperature 125C, Vin=48V 100 LFM 100 LFM 30 LFM 75.00 50.00 25.00 0.00 0.00 25.0 40.0 55.0 70.0 85.0 25.0 Ambient Temperature [ C ] 40.0 55.0 Ambient Temperature [C] 70.0 85.0 Europe, Middle East +353 61 225 977 North America +1 408 785 5200 (c) 2016 Bel Power Solutions & Protection BCD.00279_AE Asia-Pacific +86 755 298 85888 UIE48T10120 12 Fig. 7: Efficiency vs. load current and input voltage for UIE48T10120 converter w/o baseplate 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. 8: Power dissipation vs. load current and input voltage for UIE48T10120 converter w/o baseplate mounted vertically with air flowing from pin 3 to pin 1 at a rate of 300 LFM (1.5 m/s) and Ta = 25C. 12.00 0.95 18V 18V 24V 24V 0.90 10.00 36V 36V 48V 48V 8.00 75V 0.80 0.75 60V 75V 6.00 4.00 2.00 0.70 0.00 0.65 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 1.0 10.0 FE 60V Power Dissipation [W] Efficiency [%] 0.85 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 Output Current [A] Fig. 11: Output voltage response to load current stepchange (5 A - 7.5 A -5 A) at Vin = 48 V. Top trace: output voltage (500 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 0.1 A/s. Co = 1 F ceramic + 100 F + 10 F tantalum. Time scale: 200 s/div. EN D O F Fig. 9: Turn-on transient at full rated load current (resistive) with Cout 10 F tantalum + 1 F ceramic at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (5 V/div.). Time scale: 20 ms/div. LI Output Current [A] Fig. 10: Turn-on transient at full rated load current (resistive) plus 4700 F at Vin = 48 V, triggered via ON/OFF pin. Top trace: ON/OFF signal (5 V/div.). Bottom trace: output voltage (5 V/div.) Time scale: 20 ms/div. Fig. 12: Output voltage response to load current stepchange (5 A - 7.5A - 5 A) at Vin = 48 V. Top trace: output voltage (500 mV/div.). Bottom trace: load current (5 A/div.). Current slew rate: 1 A/s. Co = 1 F ceramic + 4,700 F+ 10F tantalum. Time scale: 200 s/div. tech.support@psbel.com UIE48T10120 FE 13 Fig. 14: Test setup for measuring input reflected ripple currents, ic ic and is. O F LI Fig. 13: Output voltage ripple (50 mV/div.) at full rated load current into a resistive load with Co = 10 F tantalum + 1 F ceramic and Vin = 48 V. Time scale: 2 s/div. Fig. 16: Input reflected ripple current, is (50 mA/div.), measured through 10 H at the source at full rated load current and Vin =48 V. Refer to Fig. 14 for test setup. Time scale: 2 s/div. EN D Fig. 15: Input reflected ripple current, ic (1 A/div.), measured at input terminals at full rated load current and Vin = 48 V. Refer to Fig. 14 for test setup. Time scale: 2 s/div. Fig. 17: Load current (top trace, 5 A/div., 100 ms/div.) into a 10 m short circuit during restart, at Vin = 48 V. Bottom trace (5 A/div., 10 ms/div.) is an expansion of the on-time portion of the top trace. Europe, Middle East +353 61 225 977 North America +1 408 785 5200 (c) 2016 Bel Power Solutions & Protection BCD.00279_AE Asia-Pacific +86 755 298 85888 UIE48T10120 FE 14 LI Fig. 18: Typical input EMI filter circuit to attenuate conducted emissions. C4 L1 C7 L2 UUT C1 C2 C3 C6 R lo a d F V in C8 O C5 DESCRIPTION C1, C2, C3 2 x 1uF, 100V ceramic cap C6 100uF, 100V electrolytic cap L1, L2 0.59mH, Pulse P0353NL EN D COMP. DES. C4, C5 4700pF, ceramic cap C7, C8 4700pF, ceramic cap Fig. 19: Vin+ Peak Detector EMI waveform tech.support@psbel.com UIE48T10120 F LI FE 15 EN D O Fig. 20: Vin- Peak Detector EMI waveform Europe, Middle East +353 61 225 977 North America +1 408 785 5200 (c) 2016 Bel Power Solutions & Protection BCD.00279_AE Asia-Pacific +86 755 298 85888 UIE48T10120 16 6. PHYSICAL INFORMATION 6.1. UIE48T PINOUT (THROUGH-HOLE, mm) 2.3000.020 [58.420.51] 8 1 0.300 [7.62] 7 TOP VIEW 2 0.300 [7.62] FE 0.8960.020 [22.760.51] 6 0.600 [15.24] 5 3 4 0.450 [11.43] LI 0.300 [7.62] 2.000 [50.80] 0.1480.020 [3.760.51] 0.150 [3.81] 0.148 [3.76] UIE48T Platform Notes All dimensions are in inches [mm] Pins 1-3 and 5-7 are O 0.040" [1.02] with O 0.076" [1.93] shoulder Pins 4 and 8 are O 0.062" [1.57] with are O 0.096" [2.44] shoulder Pin Material: Brass Alloy 360 Pin Finish: Tin over Nickel O EN D PAD/PIN CONNECTIONS PAD/PIN # FUNCTION 1 VIN (+) 2 ON/OFF 3 VIN (-) 4 VOUT (-) 5 VOUT (-) Sense 6 Trim 7 VOUT (+) Sense 8 VOUT (+) F 0.1400.020 [3.560.51] SIDE VIEW NO BASEPLATE/HEAT SPREADER HT(-xDx0x) PL D CUSTOMER PCB SIDE VIEW WITH BASEPLATE/HEAT SPREADER HT(-xDxBx) PL HEIGHT [HT] CL 0.440" [11.18] Max 0.500" +/-0.020 [12.70 +/-0.51] PIN OPTION MIN CLEARANCE [CL] 0.028" [0.71] SPECIAL FEATURES 0.028" [0.71] 0 B PIN LENGTH [PL] 0.005" [0.13] A 0.188" [4.78] B 0.145" [3.68] CL CUSTOMER PCB tech.support@psbel.com UIE48T10120 17 FE 6.2. BASEPLATE / HEAT SPREADER INTERFACE INFORMATION LI SCREW LENGTH MUST BE SELECTED TO LIMIT HEAT SPREADER PENETRATION TO 0.10[2.5] 6.3. CONVERTER PART NUMBERING/ORDERING INFORMATION PRODUCT SERIES INPUT VOLTAGE MOUNTING SCHEME RATED CURRENT OUTPUT VOLTAGE UIE 48 T 10 120 10 10 ADC N D A B N Negative D 0.440" for -xDx0x Through hole 0 Standard A 0.188" B Baseplate option F 18-75 V T Throughhole MAXIMUM HEIGHT [HT] 120 12V P Positive O Eighth Brick Format - ON/OFF LOGIC 0.520" for -xDxBx PIN LENGTH SPECIAL [PL] FEATURES B 0.145" RoHS G G RoHS compliant for all six substances EN D The example above describes P/N UIE48T10120-NDABG: 18-75V input, through-hole, 10A@12V output, negative ON/OFF logic, maximum height of 0.52", 0.188" pin length with baseplate / heat spreader option. RoHS compliant for all 6 substances. Consult factory for availability of other options. Europe, Middle East +353 61 225 977 North America +1 408 785 5200 (c) 2016 Bel Power Solutions & Protection BCD.00279_AD Asia-Pacific +86 755 298 85888 UIE48T10120 18 7. SOLDERING INFORMATION 7.1. THROUGH HOLE SOLDERING Below table lists the temperature and duration for wave soldering PB-FREE SN/PB EUTECTIC Maximum Preheat Temperature 130C 110C Maximum Pot Temperature 265C 255C Maximum Solder Dwell Time 7 Sec FE WAVE SOLDER PROCESS SPECIFICATION 7.2. LEAD FREE REFLOW SOLDERING 6 Sec LI The unit is Paste In Hole (PIH) compatible. The profile below is provided as a guideline for Pb-free reflow only. There are many other factors which will affect the result of reflow soldering. Please check with your process engineer thoroughly. EN D O F Fig. 21: Lead Free solder reflow profile For PIH reflow process, the unit has a MSL rating of 1. NUCLEAR AND MEDICAL APPLICATIONS - Products are not designed or intended for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems. 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. tech.support@psbel.com