Technical Specification SQ60120QPA28 36-75 V 12 V 336 W 2000 Vdc Quarter-brick Input Output Power Isolation DC Bus Converter The BusQor (R) SQ60120QPA28 bus converter is a next-generation, board-mountable, isolated, fixed switching frequency dc-dc converter that uses synchronous rectification to achieve extremely high conversion efficiency. The power dissipated by the converter is so low that a heatsink is not required, which saves cost, weight, height, and application effort. The SQ BusQor series provides an isolated step down voltage from 48 V to a semi-regulated 12 V intermediate bus. BusQor converters are ideal for customers who need multiple outputs and wish to build or buy point of load converters to work with a 12 V rail. RoHS Compliant (see last page). Bus Converter SQ60120QPA28 Module Operational Features * Ultra-high efficiency, 95% at full rated load current * Delivers up to 28 A (336 W) of output current (power) with minimal derating - no heatsink required * Input voltage range: 36 - 75 V * Fixed frequency switching provides predictable EMI performance Mechanical Features * Industry standard quarter-brick bus converter pin-out ("S" Feature Set) * Industry standard size: 1.45" x 2.3" (36.8 x 58.4 mm) * Total height only 0.483" (12.27 mm), permits better airflow and smaller card pitch * Total weight: 1.5 oz. (42 grams) Control Features * On/Off control referenced to input side Product # SQ60120QPA28 Phone 1-888-567-9596 Protection Features * Input under-voltage lockout and over-voltage shutdown protects against abnormal input voltages * Output current limit and short circuit protection * Output over-voltage protection * Thermal shutdown Safety Features * 2000V, 30 MW input-to-output isolation * UL/cUL 60950-1 recognized (US & Canada), basic insulation rating * TUV certified to EN60950-1 * Meets 72/23/EEC and 93/68/EEC directives * Meets UL94V-0 flammability requirements www.synqor.com Doc.# 005-2SQ612J Rev. A 08/21/08 Page 1 Input: Output: Current: Package: Technical Specification 36-75 V 12 V 28 A Quarter-brick MECHANICAL DIAGRAM Side View Top View NOTES 1) Pins 1-3 are 0.040" (1.02mm) diameter with 0.080" (2.03 mm) diameter standoff shoulders. 2) Pins 4-7 are 0.062" (1.57 mm) diameter with 0.100" (2.54 mm) diameter standoff shoulders. 3) Other pin lengths available. Recommended pin length is 0.03" (0.76mm) greater than the PCB thickness. 4) All Pins: Material - Copper Alloy Finish (RoHS 6/6) - Matte Tin over Nickel plate PIN DESIGNATIONS Pin No. Name Function 1 Vin(+) Input Positive (36V - 75V) 2 ON/OFF 5) Undimensioned components are shown for visual reference only. 6) All dimensions in inches (mm) Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm) 7) Weight: 1.5 oz. (42 g) typical 8) Workmanship: Meets or exceeds IPC-A-610C Class II 9) UL/TUV standards require a clearance of 0.04" (1.02mm) around primary areas of the module. Product # SQ60120QPA28 Phone 1-888-567-9596 www.synqor.com Logic control input to turn converter on and off. 3 Vin(-) Input Negative 4 Vout(+) Output Positive 5 Vout(-) Output Negative 6 Vout(+) Output Positive 7 Vout(-) Output Negative Pins in Italics Shaded text are Optional Doc.# 005-2SQ612J Rev. A 08/21/08 Page 2 Input: Output: Current: Package: Technical Specification 36-75 V 12 V 28 A Quarter-brick SQ60120QPA28 ELECTRICAL CHARACTERISTICS TA=25C, airflow rate=300 LFM, Vin=48Vdc unless otherwise noted; full operating temperature range is -40C to +100C ambient temperature with appropriate power derating. Specifications subject to change without notice. Parameter Min. Typ. 0 36 48 Max. Units 100 75 100 2000 100 125 18 V V V V C C V 75 V 34 32 4 V V V 12 130 8.5 14.0 1000 15 V V A mA mA mA mA A F\H F Notes & Conditions ABSOLUTE MAXIMUM RATINGS Input Voltage Non-Operating Operating Operating Transient Protection Isolation Voltage (input to output) Operating Temperature Storage Temperature Voltage at ON/OFF input pin INPUT CHARACTERISTICS Operating Input Voltage Range Input Under-Voltage Lockout Turn-On Voltage Threshold Turn-Off Voltage Threshold Lockout Voltage Hysteresis Input Over-Voltage Shutdown Turn-Off Voltage Threshold Turn-On Voltage Threshold Maximum Input Current No-Load Input Current Disabled Input Current Input Reflected-Ripple Current Input Terminal-Ripple Current Recommended Input Fuse1 Input Filter Component Values (C\L) Recommended External Input Capacitance -40 -55 -2 36 31 28 2 105 95 7.5 600 6.6\0.22 47 OUTPUT CHARACTERISTICS Output Voltage Set Point Output Voltage Regulation Over Line Over Load Over Temperature Total Output Voltage Range Output Voltage Ripple and Noise2 Peak-to-Peak RMS Operating Output Current Range Output DC Current-Limit Inception Output DC Current-Limit Shutdown Voltage Back-Drive Current Limit while Disabled Maximum Output Capacitance DYNAMIC CHARACTERISTICS Output Voltage during Load Current Transient For a Step Change in Output Current (0.1A/s) Settling Time Turn-On Transient Turn-On Time Start-Up Inhibit Time Output Voltage Overshoot EFFICIENCY 100% Load 50% Load TEMPERATURE LIMITS FOR POWER DERATING CURVES 48 10.6 0 12.35 V +0.48\-1.8 +0\-0.6 300 V V mV V 150 40 Isolation Voltage (dielectric strength) Isolation Resistance Isolation Capacitance3 RMS through 10H inductor; Figures 12 & 14 RMS, full load; Figures 12 & 1 Fast blow external fuse recommended Internal values Typical ESR 0.1-0.2W; see Figure 12 48Vin, no load Figure 4 Figure 4 Figure 4 Over sample, line, load, temperature & life 20MHz bandwidth; Figures 12 & 15 Full Load; see Figures 12 & 15 Full Load; see Figures 12 & 15 Subject to thermal derating; Figures 5 - 8 Output Voltage 10% Low; Figure 16 3,000 1500 250 2250 350 mV s 50% to 75% to 50% Iout max; Figure 11 To within 1% Vout nom 8 200 0 10 ms ms % Full load, Vout=90% nom.; Figures 9 & 10 -40C to +125C; Figure E 3 mF load capacitance, Iout = 0A % % Figure 1 Figure 1 125 125 125 C C C Package rated to 150C UL rated max operating temp 130C See Figures 5 - 8 for derating curves 470 V MW pF 35 7 50 300 100 28 Vin when unit will shut down Vin when unit turns on after shutdown event 100% Load, 35 Vin mV mV A A V mA F 95 95 Semiconductor Junction Temperature Board Temperature Transformer Temperature ISOLATION CHARACTERISTICS 12.7 Continuous Continuous 100 ms Basic insulation, Pollution Degree 2 2000 30 Negative current drawn from output 12Vout at 28A Resistive Load Note 1: UL's product certification tests were carried out using 15A fast blow fuse. Fuse interruption characteristics have to be taken into account while designing input traces. User should ensure that Input trace is capable of withstanding fault currents until fuse blows. Note 2: For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: support@synqor.com) Note 3: Higher values of isolation capacitance can be added external to the module. Product # SQ60120QPA28 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2SQ612J Rev. A 08/21/08 Page 3 Input: Output: Current: Package: Technical Specification 36-75 V 12 V 28 A Quarter-brick ELECTRICAL CHARACTERISTICS (Continued) Parameter P FEATURE CHARACTERISTICS Switching Frequency ON/OFF Control (Option P) Off-State Voltage On-State Voltage ON/OFF Control (Option N) Off-State Voltage On-State Voltage Output Over-Voltage Protection Over-Temperature Shutdown Over-Temperature Shutdown Restart Hysteresis RELIABILITY CHARACTERISTICS Calculated MTBF (Telcordia) Calculated MTBF (MIL-217) Field Demonstrated MTBF Min. Typ. Max. Units 260 300 340 kHz -1.0 2.4 0.8 18 V V 2.4 -1.0 18 0.8 V V V C C 140 16 10 2.6 2.1 150 Notes & Conditions Figure B Figure B Over full temp range; no load Average PCB Temperature 106 Hrs. TR-NWT-000332; 80% load,300LFM, 40oC Ta 106 Hrs. MIL-HDBK-217F; 80% load, 300LFM, 40oC Ta 106 Hrs. See our website for details STANDARDS COMPLIANCE Parameter P Notes STANDARDS COMPLIANCE UL/cUL 60950-1 EN60950-1 72/23/EEC 93/68/EEC Needle Flame Test (IEC 695-2-2) IEC 61000-4-2 GR-1089-CORE File # E194341, Basic insulation & pollution degree 2 Certified by TUV Test on entire assembly; board & plastic components UL94V-0 compliant ESD test, 8kV - NP, 15kV air - NP (Normal Performance) Section 7 - electrical safety, Section 9 - bonding/grounding * An external input fuse must always be used to meet these safety requirements. Contact SynQor for official safety certificates on new releases or download from the SynQor website. QUALIFICATION TESTING Parameter P QUALIFICATION TESTING Life Test Vibration Mechanical Shock Temperature Cycling Power/Thermal Cycling Design Marginality Humidity Solderability # Units 32 5 5 10 5 5 5 15 pins Test Conditions 95% rated Vin and load, units at derating point, 1000 hours 10-55Hz sweep, 0.060" total excursion,1 min./sweep, 120 sweeps for 3 axis 100g minimum, 2 drops in x and y axis, 1 drop in z axis -40C to 100C, unit temp. ramp 15C/min., 500 cycles Toperating = min to max, Vin = min to max, full load, 100 cycles Tmin-10C to Tmax+10C, 5C steps, Vin = min to max, 0-105% load 85C, 85% RH, 1000 hours, 2 minutes on and 6 hours off MIL-STD-883, method 2003 and JESD22-B102D * Extensive characterization testing of all SynQor products and manufacturing processes is performed to ensure that we supply robust, reliable product. Contact the factory for official product family qualification documents. Product # SQ60120QPA28 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2SQ612J Rev. A 08/21/08 Page 4 Input: Output: Current: Package: 100 30 95 25 Power Dissipation (W) Efficiency (%) Technical Specification 90 85 80 36-75 V 12 V 28 A Quarter-brick 20 15 10 36 Vin 36 Vin 48 Vin 75 48 Vin 5 75 Vin 75 Vin 70 0 0 4 8 12 16 20 24 28 0 4 8 Load Current (A) Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25C. 16 20 24 28 Figure 2: Power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25C. 14 97 13 Output Voltage (V) 96 Efficiency (%) 12 Load Current (A) 95 94 93 25 C 11 10 9 36V 40 C 92 12 48V 8 55 C 75V 91 7 100 200 300 400 0 Air Flow (LFM) 4 8 12 16 20 24 28 Load Current (A) Figure 3: Efficiency at nominal output voltage and 60% rated power vs. airflow rate for ambient air temperatures of 25C, 40C, and 55C (nominal input voltage). Figure 4: Output voltage regulation vs. load current for minimum, nominal, and maximum input voltage at 25C. 30 25 Iout (A) 20 15 10 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 5 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 0 25 40 55 70 Semiconductor junction temperature is within 1C of surface temperature 85 Ambient Air Temperature (C) Figure 5: Maximum output power derating curves vs. ambient air temperature for airflow rates of 0 LFM through 400 LFM with air flowing from pin 3 to pin 1 (nominal input voltage). Product # SQ60120QPA28 Phone 1-888-567-9596 Figure 6: Thermal plot of converter at 23.3 amp load current (279.6W) with 55C air flowing at the rate of 200 LFM. Air is flowing across the converter from pin 3 to pin 1 (nominal input voltage). www.synqor.com Doc.# 005-2SQ612J Rev. A 08/21/08 Page 5 Input: Output: Current: Package: Technical Specification 36-75 V 12 V 28 A Quarter-brick 30 Semiconductor junction temperature is within 1C of surface temperature 25 IOUT (A) 20 15 400 300 10 200 100 5 0 25 35 45 55 65 Ambient Air Temperature (oC) 75 85 Figure 7: Maximum output power derating curves vs. ambient air temperature for airflow rates of 0 LFM through 400 LFM with air flowing from output to input (nominal input voltage). Figure 8: Thermal plot of converter at 21.9 amp load current (262.8W) with 55C air flowing at the rate of 200 LFM. Air is flowing across the converter from output to input (nominal input voltage). Figure 9: Turn-on transient at half load (resistive load) and 3mF output capacitance (2.0 ms/div). Input voltage pre-applied. Channel 1: Vout (5V/div). Channel 2: ON/OFF input (2V/div). Figure 10: Turn-on transient at zero load and 3mF output capacitance (2.0ms/div). Input voltage pre-applied. Channel 1: Vout (5V/div). Channel 2: ON/OFF input (2V/div). See Fig. 14 10 H source impedance See Fig. 13 See Fig. 15 iS VSOURCE iC DC-DC Converter 47 F, <1W ESR electrolytic capacitor Figure 11: Output voltage response to step-change in load current (50%-75%-50% of Iout(max); dI/dt = 0.1A/s). Load cap: 100F, 100 mW ESR tantalum cap. Top trace: Vout (2V/div), Bottom trace: Iout (10A/div). Product # SQ60120QPA28 Phone 1-888-567-9596 VOUT 1 F 15 F, ceramic 450mW ESR capacitor tantalum capacitor Figure 12: Test set-up diagram showing measurement points for Input Terminal Ripple Current (Figure 13), Input Reflected Ripple Current (Figure 14) and Output Voltage Ripple (Figure 15). www.synqor.com Doc.# 005-2SQ612J Rev. A 08/21/08 Page 6 Input: Output: Current: Package: Technical Specification Figure 13: Input Terminal Ripple Current, ic, at full rated output current and nominal input voltage with 5H source impedance and 47F electrolytic capacitor (500mA/div). See Figure 12. 36-75 V 12 V 28 A Quarter-brick Figure 14: Input reflected ripple current, is, through a 5 H source inductor at nominal input voltage and rated load current (10mA/div). See Figure 12. 14 Output Voltage (V) 12 10 8 6 4 35 Vin 48 Vin 2 75 Vin 0 0 5 10 15 20 25 30 35 40 45 Load Current (A) Figure 15: Output voltage ripple at nominal input voltage and rated load current (50mV/div). Load capacitance: 1F ceramic capacitor and 15F tantalum capacitor. Bandwidth: 20MHz. See Figure 12. Figure 16: Output voltage vs. load current showing typical current limit curves and converter shutdown points. 1 36V 28A Output Impedance (ohms) 48V 28A 75V 28A 0.1 0.01 10 100 1,000 10,000 100,000 1,000,000 Hz Figure 17: Load current (10A/div) as a function of time when the converter attempts to turn on into a 1mW short circuit. Top trace (500s/ div) is an expansion of the on-time portion of the bottom trace. Product # SQ60120QPA28 Phone 1-888-567-9596 Figure 18: Magnitude of incremental output impedance (Zout = vout/ iout) for minimum, nominal, and maximum input voltage at full rated power. www.synqor.com Doc.# 005-2SQ612J Rev. A 08/21/08 Page 7 Input: Output: Current: Package: Technical Specification 36-75 V 12 V 28 A Quarter-brick 0 0 Reverse Transmission (dB) Forward Transmission (dB) -10 -20 -30 -40 -20 -30 48V 28A 35 Vin 48 Vin 75V 28A 55 Vin 36V 28A -50 -10 -60 -40 10 100 1,000 10,000 100,000 1,000,000 10 Hz 100 1,000 10,000 100,000 1,000,000 Hz Figure 19: Magnitude of incremental forward transmission (FT = vout/ vin) for minimum, nominal, and maximum input voltage at full rated power. Figure 20: Magnitude of incremental reverse transmission (RT = iin/ iout) for minimum, nominal, and maximum input voltage at full rated power. Input Impedance (ohms) 1000 100 10 1 35 Vin 48 Vin 55 Vin 0.1 10 100 1,000 10,000 100,000 1,000,000 Hz Figure 21: Magnitude of incremental input impedance (Zin = vin/iin) for minimum, nominal, and maximum input voltage at full rated power. Product # SQ60120QPA28 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2SQ612J Rev. A 08/21/08 Page 8 Input: Output: Current: Package: Technical Specification 36-75 V 12 V 28 A Quarter-brick BASIC OPERATION AND FEATURES CONTROL FEATURES With voltages dropping and currents rising, the economics of an Intermediate Bus Architecture (IBA) are becoming more attractive, especially in systems requiring multiple low voltages. IBA systems separate the role of isolation and voltage scaling from regulation and sensing. The BusQor series bus converter provides isolation and a coarse voltage step down in one compact module, leaving regulation to simpler, less expensive non-isolated converters. REMOTE ON/OFF (Pin 2): The ON/OFF input, Pin 2, permits the user to control when the converter is on or off. This input is referenced to the return terminal of the input bus, Vin(-). There are two versions of the converter that differ by the sense of the logic used for the ON/OFF input. In Figure A below, the BusQor module provides the isolation stage of the IBA system. The isolated bus then distributes power to the non-isolated buck regulators to generate the required voltage levels at the point of load. In this case, the bucks are represented with SynQor's NiQor series of non-isolated dc-dc converters. In many applications requiring multiple low voltage outputs, significant savings can be achieved in board space and overall system costs. In the positive logic version, the ON/OFF input is active high (meaning that a high turns the converter on). In the negative logic version, the ON/OFF signal is active low (meaning that a low turns the converter on). Figure B is a detailed look of the internal ON/OFF circuitry. Vin+ +5V 5V 124k When designing an IBA system with bus converters, the designer can select from a variety of bus voltages. While there is no universally ideal bus voltage, most designs employ one of the following: 12V, 9V, 7.5V, 5V, or 3.3V. Higher bus voltages can lead to lower efficiency for the buck regulators but are more efficient for the bus converter and provide lower board level distribution current. Lower bus voltages offer the opposite trade offs. SynQor's SQ BusQor modules accept the full 48/60V telecom bus voltage and have a narrow output voltage range compatible with many non-isolated point of load converters. When used in IBA systems, the output variation of the BusQor must be in accordance with the input voltage range of the non-isolated converters being employed. On/Off 49.9k TTL 100k Vin- Figure B: Internal ON/OFF pin circuitry PROTECTION FEATURES 3.3 V Input Under-Voltage Lockout: The converter is designed to turn off when the input voltage is too low, helping avoid an input system instability problem, described in more detail in the application note titled "Input System Instability" available on the SynQor website. The lockout circuitry is a comparator with DC hysteresis. When the input voltage is rising, it must exceed the typical Turn-On Voltage Threshold value (listed on the specification page) before the converter will turn on. Once the converter is on, the input voltage must fall below the typical Turn-Off Voltage Threshold value before the converter will turn off. Also see Figure E. 2.5 V 48Vdc 42-53V BusQor Converter 12Vdc 1.8 V 1.5 V 0.9 V Typical User Board NiQor Loads Converters 48Vdc Front End Figure A: Example of Intermediate Bus Architecture using BusQor bus converter and NiQor non-isolated converters Product # SQ60120QPA28 Phone 1-888-567-9596 Output Current Limit: The output of the BusQor module is electronically protected against output overloads. When an overload current greater than the "DC Current-Limit Inception" specification is drawn from the output, the output of the BusQor will shutdown to zero volts after the 1 ms have elapsed (see Figure C). The shutdown period lasts for a typical period of 200 ms (Figure D) after which the BusQor tries to power up again. If the overload persists, the output voltage will go through www.synqor.com Doc.# 005-2SQ612J Rev. A 08/21/08 Page 9 Input: Output: Current: Package: Technical Specification 36-75 V 12 V 28 A Quarter-brick In the Auto resetting mode, also referred to as "Hiccup" mode, the power drawn from the 48 V input is about 5 Watts, most of which is dissipated into the external fault. It is important that copper traces and pads from the output circuit be designed to withstand the short term peaks, although the average current into the fault may be as low as 50 mA typical. See Figure 17 for appropriate waveform. Output Current 40A 28A Output Voltage 12V Output Current 0V 40A peak 1 ms Time Figure C: Output Overload protection diagram (not to scale) repeated cycles of shutdown and restart with a duty cycle of 20 ms (On) and 200 ms (Off) respectively. The BusQor module returns (auto resetting) to normal operation once the overload is removed. The BusQor is designed to survive in this mode indefinitely without damage and without human intervention. Output Short Circuit Protection: When the output of the BusQor module is shorted, a peak current of typically 40 A will flow into the short circuit for a time of about 1 ms. The output of the BusQor will shutdown to zero volts after the 1 ms have elapsed (Figure D). The shutdown period lasts for a time of 200 ms, at the end of which the BusQor module tries to power up again. If the short circuit persists, the output voltage will go through repeated cycles of shutdown and restart with a duty cycle of 20 ms (On) and 200 ms (Off) respectively. The BusQor module returns (auto resetting) to normal operation once the short circuit is removed. The BusQor is designed to survive in this mode indefinitely without damage and without human intervention. Product # SQ60120QPA28 Phone 1-888-567-9596 Output Voltage <12V 0V Time 220 ms 20 ms Figure D: Output Short Circuit and Auto-Resetting protection diagram (not to scale) www.synqor.com Doc.# 005-2SQ612J Rev. A 08/21/08 Page 10 Input: Output: Current: Package: Technical Specification Over-Temperature Shutdown: A temperature sensor on the converter senses the average temperature of the module. The thermal shutdown circuit is designed to turn the converter off when the temperature at the sensed location reaches the Over-Temperature Shutdown value. It will allow the converter to turn on again when the temperature of the sensed location falls by the amount of the Over-Temperature Shutdown Restart Hysteresis value. 36-75 V 12 V 28 A Quarter-brick APPLICATION CONSIDERATIONS Start-Up Inhibit Period: Figure E details the Start-Up Inhibit Period for the BusQor modulewhen Vin is applied with the On/ Off pin asserted (enabled). Before time t1, when the input voltage is below the UVL threshold, the unit is disabled by the Input UnderVoltage Lockout feature. When the input voltage rises above the UVL threshold, the Input Under-Voltage Lockout is released, and a typical Startup Inhibit Period of 8 ms from a Vin start-up. Once the module recognizes it should be on it waits an additional 4 ms before it starts. When starting from an on/off event the module has an inhibit time of 200 ms like our standard products. The output builds up to 90% or higher of the nominal voltage and stabilizes to its nominal output voltage in a total time of 8 ms typical. The the module has a Vout rise time of 4 ms typically. Vin UVLO On/Off (N logic) At time t2, when the On/Off pin is de-asserted (disabled), the BusQor module stops switching immediately. Fall time from 12 V to 0 V is dependent on output capacitance load current, and any parasitic trace inductance in the output load circuit. OFF ON t0 t1 t2 t t3 Vout 12V At time t3, when the On/Off pin is re-asserted (enabled), the BusQor module output begins to build up after the inhibit period of 200 ms typical. Refer to the Control Features section of the data sheet for details on enabling and disabling methods for N and P logic type modules. 200 ms 12 ms Time 208 ms Figure E: Power Up/Down Diagram (not to scale) showing Start-Up Inhibit Period. Product # SQ60120QPA28 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2SQ612J Rev. A 08/21/08 Page 11 Input: Output: Current: Package: Technical Specification 36-75 V 12 V 28 A Quarter-brick PART NUMBERING SYSTEM ORDERING INFORMATION The part numbering system for SynQor's BusQor DC bus converters follows the format shown in the example below. The tables below show the valid model numbers and ordering options for converters in this product family. When ordering SynQor converters, please ensure that you use the complete 15 character part number consisting of the 12 character base part number and the additional 3 characters for options. A "-G" suffix indicates the product is 6/6 RoHS compliant. S Q 60 1 20 Q P A 2 8 N N S - G 6/6 RoHS Options (see Ordering Information) Output Current Thermal Design Performance Level Package Size Output Voltage The following option choices must be included in place of the x y z spaces in the model numbers listed above. Input Voltage Product Family Options Description: x y z The first 12 characters comprise the base part number and the last 3 characters indicate available options. Although there are no default values for enable logic and pin length, the most common options are negative logic and 0.145" pins. These part numbers are more likely to be readily available in stock for evaluation and prototype quantities. A "-G" suffix indicates the product is 6/6 RoHS compliant. Enable Logic* Pin Length Feature Set P - Positive N - Negative K - 0.110" N - 0.145" R - 0.180" Y - 0.250" S - Standard 2 Pin 4 - Two sets of Output Pins Application Notes PATENTS SynQor holds the following patents, one or more of which might apply to this product: 5,999,417 6,594,159 6,927,987 7,119,524 6,222,742 6,731,520 7,050,309 7,269,034 6,545,890 6,894,468 7,072,190 7,272,021 6,577,109 6,896,526 7,085,146 7,272,023 A variety of application notes and technical white papers can be downloaded in pdf format from our website. RoHS Compliance: The EU led RoHS (Restriction of Hazardous Substances) Directive bans the use of Lead, Cadmium, Hexavalent Chromium, Mercury, Polybrominated Biphenyls (PBB), and Polybrominated Diphenyl Ether (PBDE) in Electrical and Electronic Equipment. This SynQor product is available as 6/6 RoHS compliant. For more information please refer to SynQor's RoHS addendum available at our RoHS Compliance / Lead Free Initiative web page or e-mail us at rohs@synqor.com. Contact SynQor for further information: Phone: Toll Free: Fax: E-mail: Web: Address: Product # SQ60120QPA28 978-849-0600 888-567-9596 978-849-0602 power@synqor.com www.synqor.com 155 Swanson Road Boxborough, MA 01719 USA Phone 1-888-567-9596 Warranty SynQor offers a three (3) year limited warranty. Complete warranty information is listed on our website or is available upon request from SynQor. Information furnished by SynQor is believed to be accurate and reliable. However, no responsibility is assumed by SynQor for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SynQor. www.synqor.com Doc.# 005-2SQ612J Rev. A 08/21/08 Page 12