GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Features Compliant to RoHS Directive 2011/65/EU and amended Directive (EU) 2015/863 RoHS Compliant Applications Distributed power architectures Intermediate bus voltage applications Telecommunications equipment Servers and storage applications Networking equipment Industrial applications Compliant to REACH Directive (EC) No 1907/2006 Compatible in a Pb-free or SnPb wave-soldering environment (Z versions) Wide Input voltage range (3Vdc-14Vdc) Output voltage programmable from 0.6 Vdc to 5.5Vdc via external resistor Tunable LoopTM to optimize dynamic output voltage response Fixed switching frequency Output overcurrent protection (non-latching) Over temperature protection Remote On/Off Small size: 10.4 mm x 13.5 mm x 8.1 mm (0.41 in x 0.53 in x 0.32 in) Wide operating temperature range (-40C to 85C) ANSI/UL* 62368-1 and CAN/CSA C22.2 No. 62368-1 Recognized, DIN VDE 0868-1/A11:2017 (EN623681:2014/A11:201) ISO** 9001 and ISO 14001 certified manufacturing facilities Vout+ Vin+ VIN VOUT MODULE + CI2 RTUNE MODULE CI1 CTUNE Q3 ON/OFF GND CO1 TRIM RTrim Description The NQR002A0X4 SIP power modules are non-isolated dc-dc converters in an industry standard package that can deliver up to 2A of output current with a full load efficiency of 93% at 5.0Vdc output voltage (VIN = 12Vdc). These modules operate over a wide range of input voltage (VIN = 3Vdc-14Vdc) and provide a precisely regulated output voltage from 0.6Vdc to 5.5Vdc, programmable via an external resistor. Features include remote On/Off, adjustable output voltage, over current and over temperature protection. A new feature, the Tunable LoopTM, allows the user to optimize the dynamic response of the converter to match the load. * UL is a registered trademark of Underwriters Laboratories, Inc. CSA is a registered trademark of Canadian Standards Association. VDE is a trademark of Verband Deutscher Elektrotechniker e.V. ** ISO is a registered trademark of the International Organization of Standards September 3, 2020 (c)2014 General Electric Company. All rights reserved. GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the device reliability. Parameter Input Voltage Device Symbol Min Max Unit All VIN -0.3 15 Vdc All TA -40 85 C All Tstg -55 125 C Continuous Operating Ambient Temperature (see Thermal Considerations section) Storage Temperature Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Parameter Device Symbol Min Typ Max Unit Operating Input Voltage All VIN 3 12 14 Vdc Maximum Input Current (VIN=3V to 14V, IO=IO, max ) All IIN,max 2.0 Adc (VIN = 9Vdc, IO = 0, module enabled) VO,set = 0.6 Vdc IIN,No load 20 mA (VIN = 12Vdc, IO = 0, module enabled) VO,set = 5.0Vdc IIN,No load 48 mA All IIN,stand-by 1.5 mA Inrush Transient All I2t Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1H source impedance; VIN =0 to 14V, IO= IOmax ; See Test Configurations) All 20 mAp-p Input Ripple Rejection (120Hz) All -65 dB Input No Load Current Input Stand-by Current (VIN = 12Vdc, module disabled) A2s 1 CAUTION: This power module is not internally fused. An input line fuse must always be used. This power module can be used in a wide variety of applications, ranging from simple standalone operation to an integrated part of sophisticated power architecture. To preserve maximum flexibility, internal fusing is not included; however, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a fast-acting fuse with a maximum rating of 4A (see Safety Considerations section). Based on the information provided in this data sheet on inrush energy and maximum dc input current, the same type of fuse with a lower rating can be used. Refer to the fuse manufacturer's data sheet for further information. September 3, 2020 (c)2014 General Electric Company. All rights reserved. Page 2 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Electrical Specifications (continued) Parameter Output Voltage Set-point (with 0.5% tolerance for external resistor used to set output voltage) Output Voltage (Over all operating input voltage, resistive load, and temperature conditions until end of life) Adjustment Range Selected by an external resistor Device Symbol Min All VO, set -1.5 All VO, set -3.0 All VO 0.6 Typ Max Unit +1.5 % VO, set +3.0 % VO, set 5.5 Vdc +0.4 % VO, set 0.8 % VO, set +10 mV 20 mV Output Regulation (for Vo 2.5Vdc) Line (VIN=VIN, min to VIN, max) All Load (IO=IO, min to IO, max) All -0.4 Output Regulation (for Vo <2.5Vdc) Line (VIN=VIN, min to VIN, max) All Load (IO=IO, min to IO, max) All -10 Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max Cout = 22F) Peak-to-Peak (5Hz to 20MHz bandwidth) All 50 100 mVpk-pk RMS (5Hz to 20MHz bandwidth) All 20 38 mVrms External Capacitance1 Without the Tunable LoopTM ESR 1 m With the Tunable ESR 0.15 m ESR 10 m All CO, max 22 47 F All All CO, max CO, max 0 0 1000 3000 F F 0 LoopTM Output Current All Io Output Current Limit Inception (Hiccup Mode ) All IO, lim 180 2 % Io,max Adc Output Short-Circuit Current All IO, s/c 140 mArms (VO250mV) ( Hiccup Mode ) Efficiency VO,set = 0.6Vdc 69.2 % VIN= 12Vdc, TA=25C (VIN= 6Vdc) VO, set = 1.2Vdc 80.4 % IO=IO, max , VO= VO,set VO,set = 1.8Vdc 85.5 % VO,set = 2.5Vdc 88.9 % VO,set = 3.3Vdc 91 % VO,set = 5.0Vdc 93.3 % All fsw Switching Frequency 600 kHz 1 External capacitors may require using the new Tunable Loop feature to ensure that the module is stable as well as getting the best transient response. See the Tunable LoopTM section for details. September 3, 2020 (c)2014 General Electric Company. All rights reserved. Page 3 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current General Specifications Parameter Calculated MTBF (VIN=12V, VO=5Vdc, IO=0.8IO, max, TA=40C) Per Telcordia SR-332 Issue3: Method 1, Case 3 Weight Min Typ Max 138,941,752 1.2 (0.042) Unit Hours g (oz.) General Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information. Parameter Device Symbol Input High Current All IIH Input High Voltage All VIH Min Typ Max Unit 1 mA 3.0 VIN, max V On/Off Signal interface (VIN=VIN, min to VIN, max; Open collector or equivalent signal referenced to GND) Logic High (Enable pin open - Module ON) Logic Low (Module Off) Input Low Current All IIL 10 A Input Low Voltage All VIL -0.3 0.3 V All Tdelay 5 msec All Tdelay 5.2 msec All Trise 1.4 msec Turn-On Delay and Rise Times (IO=IO, max , VIN = VIN, nom, Vo to within 1% of steady state) Case 1: Enable input is enabled and then input power is applied (delay from instant at which VIN =VIN, min until Vo=10% of Vo,set) Case 2: Input power is applied for at least one second and then Enable input is set enabled (delay from instant at which Enable is enabled until Vo=10% of Vo, set) Output voltage Rise time (time for Vo to rise from 10% of Vo,set to 90% of Vo, set) Output voltage overshoot IO= IO, max; VIN = VIN, min to VIN, max, TA = 25 Overtemperature Protection 3.0 % VO, set oC All Tref 117 C Input Undervoltage Lockout Turn-on Threshold All 2.95 Vdc Turn-off Threshold All 2.8 Vdc September 3, 2020 (c)2014 General Electric Company. All rights reserved. Page 4 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Characteristic Curves The following figures provide typical characteristics for the NQR002 (0.6V, 2A) at 25oC 2.5 90 NC 70 OUTPUT CURRENT, Io (A) EFFICIENCY, (%) 80 Vin = 3V 60 50 Vin = 14V Vin = 12V 40 30 0 0.5 1 1.5 2.0 1.5 1.0 0.5 0.0 25 2 75 85 OUTPUT VOLTAGE VO (V) (100mV/div) OUTPUT CURRENT, .........IO (A) (1Adiv) VIN (V) (5V/div) TIME, t (5ms/div) Figure 5. Typical Start-up Using On/Off Voltage (Io = Io,max, Vin=12V,Cext= 22uF). TIME, t (500s /div) Figure 4. Transient Response to Dynamic Load Change from 0% to 50% to 0% . INPUT VOLTAGE VON/OFF (V) (5V/div) 65 Figure 2. Derating Output Current versus Ambient Temperature and Airflow. OUTPUT VOLTAGE ON/OFF VOLTAGE VO (V) (200mV/div) Figure 3. Typical output ripple and noise (VIN = 12V, Io = Io,max). OUTPUT VOLTAGE 55 VO (V) (200mV/div) VO (V) (20mV/div) OUTPUT VOLTAGE TIME, t (2s/div) September 3, 2020 45 AMBIENT TEMPERATURE, TA OC OUTPUT CURRENT, IO (A) Figure 1. Converter Efficiency versus Output Current. 35 TIME, t (5ms/div) Figure 6. Typical Start-up Using Input Voltage (VIN = 12V, Cext= 22uF ,Io = Io,max). (c)2014 General Electric Company. All rights reserved. Page 5 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Characteristic Curves The following figures provide typical characteristics for the NQR002 (1.2V, 2A) at 25oC 2.5 100 NC OUTPUT CURRENT, Io (A) EFFICIENCY, (%) 90 80 Vin = 3V 70 60 Vin = 14V Vin = 12V 50 40 0 0.5 1 1.5 2.0 1.5 1.0 0.5 0.0 25 2 75 85 OUTPUT VOLTAGE VO (V) (100mV/div) IO (A) (1Adiv) OUTPUT CURRENT, VO (V) (20mV/div) OUTPUT VOLTAGE INPUT VOLTAGE VIN (V) (5V/div) VO (V) (500mV/div) Figure 10. Transient Response to Dynamic Load Change from 0% to 50% to 0%. OUTPUT VOLTAGE ON/OFF VOLTAGE VON/OFF (V) (5V/div) VO (V) (500mV/div) OUTPUT VOLTAGE September 3, 2020 65 TIME, t (500s /div) TIME, t (5ms/div) Figure 11. Typical Start-up Using On/Off Voltage (Io = Io,max, Vin=12V,Cext= 22uF). 55 Figure 8. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (2s/div) Figure 9. Typical output ripple and noise (VIN = 12V, Io = Io,max). 45 AMBIENT TEMPERATURE, TA OC OUTPUT CURRENT, IO (A) Figure 7. Converter Efficiency versus Output Current. 35 TIME, t (5ms/div) Figure 12. Typical Start-up Using Input Voltage (VIN = 12V, Cext= 22uF, Io = Io,max). (c)2014 General Electric Company. All rights reserved. Page 6 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Characteristic Curves The following figures provide typical characteristics for the NQR002 (1.8V, 2A) at 25oC. 2.5 100 NC OUTPUT CURRENT, Io (A) 90 EFFICIENCY, (%) Vin = 12V Vin = 3V 80 Vin = 14V 70 60 50 40 OUTPUT CURRENT, IO (A) VO (V) (20mV/div) OUTPUT VOLTAGE Figure 13. Converter Efficiency versus Output Current. 1.5 1.0 0.5 0.0 25 2 TIME, t (2s/div) 65 75 85 INPUT VOLTAGE VIN (V) (5V/div) VO(V) (500mV/div) VON/OFF (V) (5V/div) VO (V) (500mV/div) September 3, 2020 55 Figure 16. Transient Response to Dynamic Load Change from 0% to 50% to 0%. TIME, t (5ms/div) Figure 17. Typical Start-up Using On/Off Voltage (Io = Io,max, Vin=12V,Cext=22uF,). 45 TIME, t (500s /div) OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE Figure 15. Typical output ripple and noise (VIN = 12V, Io = Io,max). 35 AMBIENT TEMPERATURE, TA OC Figure 14. Derating Output Current versus Ambient Temperature and Airflow. VO (V) (100mV/div) 1.5 OUTPUT VOLTAGE 1 IO (A) (1Adiv) 0.5 OUTPUT CURRENT, 0 2.0 TIME, t (5ms/div) Figure 18. Typical Start-up Using Input Voltage (VIN = 12V, Cext=22uF, Io = Io,max). (c)2014 General Electric Company. All rights reserved. Page 7 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Characteristic Curves The following figures provide typical characteristics for the NQR002 (2.5V, 2A) at 25oC. 2.5 100 NC EFFICIENCY, (%) 90 OUTPUT CURRENT, Io (A) Vin = 12V Vin = 3V 80 Vin = 14V 70 60 50 40 0 0.5 1 1.5 2.0 1.5 1.0 0.5 0.0 25 2 September 3, 2020 75 85 VO (V) (100mV/div) IO (A) (1Adiv) OUTPUT CURRENT, OUTPUT VOLTAGE Figure 23. Typical Start-up Using On/Off Voltage (Io = Io,max, Vin=12V,Cext= 22uF ). OUTPUT VOLTAGE TIME, t (5ms/div) 65 TIME, t (500s /div) VIN (V) (5V/div) Figure 22. Transient Response to Dynamic Load Change from 0% to 50% to 0%. INPUT VOLTAGE VON/PFF (V) (5V/div) VO (V) (1V/div) OUTPUT VOLTAGE ON/OFF VOLTAGE Figure 21. Typical output ripple and noise (VIN = 12V, Io = Io,max). 55 Figure 20. Derating Output Current versus Ambient Temperature and Airflow. VO (V) (1V/div) VO (V) (20mV/div) OUTPUT VOLTAGE TIME, t (2s/div) 45 AMBIENT TEMPERATURE, TA OC OUTPUT CURRENT, IO (A) Figure 19. Converter Efficiency versus Output Current. 35 TIME, t (5ms/div) Figure 24. Typical Start-up Using Input Voltage (VIN = 12V, Cext= 22uF, Io = Io,max). (c)2014 General Electric Company. All rights reserved. Page 8 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Characteristic Curves The following figures provide typical characteristics for the NQR002 (3.3V, 2A) at 25oC. 2.5 100 NC Vin = 12V Vin = 4.5V Vin = 14V 75 70 65 60 1.5 OUTPUT CURRENT, IO (A) TIME, t (2s/div) TIME, t (5ms/div) Figure 29. Typical Start-up Using On/Off Voltage (Io = Io,max, Vin=12V,Cext= 22uF) September 3, 2020 0.0 35 45 55 65 75 85 AMBIENT TEMPERATURE, TA OC Figure 26. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (500s /div) Figure 28. Transient Response to Dynamic Load Change from 0% to 50% to 0%. INPUT VOLTAGE VON?OFF (V) (5V/div) VO (V) (1V/div) OUTPUT VOLTAGE ON/OFF VOLTAGE Figure 27. Typical output ripple and noise (VIN = 12V, Io = Io,max). 0.5 25 2 OUTPUT VOLTAGE VO (V) (20mV/div) OUTPUT VOLTAGE Figure 25. Converter Efficiency versus Output Current. 1.0 VO (V) (100mV/div) 1 OUTPUT CURRENT, 0.5 OUTPUT VOLTAGE 0 1.5 IO (A) (1Adiv) 80 VIN (V) (5V/div) 85 2.0 VO (V) (1V/div) 90 EFFICIENCY, (%) OUTPUT CURRENT, Io (A) 95 TIME, t (5ms/div) Figure 30. Typical Start-up Using Input Voltage (VIN = 12V, Cext= 22uF, Io = Io,max). (c)2014 General Electric Company. All rights reserved. Page 9 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Characteristic Curves The following figures provide typical characteristics for the NQR002 (5V, 2A) at 25oC. 2.5 100 NC Vin = 6.5V OUTPUT CURRENT, Io (A) EFFICIENCY, (%) 95 Vin = 12V 90 85 Vin = 14V 80 75 70 0 0.5 1 1.5 2.0 1.5 1.0 0.5 0.0 25 2 OUTPUT VOLTAGE VO (V) (100mV/div) IO (A) (1Adiv) TIME, t (2s/div) September 3, 2020 65 75 85 TIME, t (500s /div) OUTPUT VOLTAGE VIN (V) (5V/div) INPUT VOLTAGE Figure 34. Transient Response to Dynamic Load Change from 0% to 50% to 0%. TIME, t (5ms/div) Figure 35. Typical Start-up Using On/Off Voltage (Io = Io,max, Vin=12V,Cext= 22uF). 55 Vo (V) (2V/div) VON/OFF (V) (5V/div) VO (V) (2V/div) OUTPUT VOLTAGE ON/OFF VOLTAGE Figure 33. Typical output ripple and noise (VIN = 12V, Io = Io,max). 45 Figure 32. Derating Output Current versus Ambient Temperature and Airflow. OUTPUT CURRENT, VO (V) (20mV/div) OUTPUT VOLTAGE Figure 31. Converter Efficiency versus Output Current. 35 AMBIENT TEMPERATURE, TA OC OUTPUT CURRENT, IO (A) TIME, t (5ms/div) Figure 36. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max, Cext= 22uF). (c)2014 General Electric Company. All rights reserved. Page 10 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Test Configurations Design Considerations CURRENT PROBE The NQR002A0X4 2A module should be connected to a low acimpedance source. A highly inductive source can affect the stability of the module. An input capacitance must be placed directly adjacent to the input pin of the module, to minimize input ripple voltage and ensure module stability. LTEST VIN(+) BATTERY 1H CIN CS 1000F Electrolytic To minimize input voltage ripple, low-ESR ceramic or polymer capacitors are recommended at the input of the module. Figure 4 shows the input ripple voltage for various output voltages at 2A of load current with 1x10 F or 1x22 F ceramic capacitors and an input of 12V. 2x100F Tantalum E.S.R.<0.1 @ 20C 100kHz COM NOTE: Measure input reflected ripple current with a simulated source inductance (LTEST) of 1H. Capacitor CS offsets possible battery impedance. Measure current as shown above. 120 1x10uF Figure 1. Input Reflected Ripple Current Test Setup. COPPER STRIP VO (+) RESISTIVE LOAD 1uF . 10uF SCOPE COM GROUND PLANE NOTE: All voltage measurements to be taken at the module terminals, as shown above. If sockets are used then Kelvin connections are required at the module terminals to avoid measurement errors due to socket contact resistance. Figure 2. Output Ripple and Noise Test Setup. Rdistribution Rcontact Rcontact VIN(+) Input Filtering Rdistribution 110 Input Ripple Voltage (mVp-p) TO OSCILLOSCOPE 1x22uF 100 90 80 70 60 50 40 30 20 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Output Voltage (Vdc) Figure 4. Input ripple voltage for various output voltages with 1x10 F or 1x22 F ceramic capacitors at the input (2A load). Input voltage is 12V. VO Output Filtering Rdistribution RLOAD VO VIN Rcontact Rcontact COM Rdistribution COM NOTE: All voltage measurements to be taken at the module terminals, as shown above. If sockets are used then Kelvin connections are required at the module terminals to avoid measurement errors due to socket contact resistance. Figure 3. Output Voltage and Efficiency Test Setup. VO. IO Efficiency September 3, 2020 = VIN. IIN x 100 % The NQR002A0X4 2A modules are designed for low output ripple voltage and will meet the maximum output ripple specification with no external capacitors. However, additional output filtering may be required by the system designer for a number of reasons. First, there may be a need to further reduce the output ripple and noise of the module. Second, the dynamic response characteristics may need to be customized to a particular load step change. To reduce the output ripple and improve the dynamic response to a step load change, additional capacitance at the output can be used. Low ESR ceramic and polymer are recommended to improve the dynamic response of the module. Figure 5 provides output ripple information for different external capacitance values at various Vo and for a load current of 2A. For stable operation of the module, limit the capacitance to less than the maximum output capacitance as specified in the electrical specification table. Optimal performance of the module can be achieved by using the Tunable LoopTM feature described later in this data sheet. (c)2014 General Electric Company. All rights reserved. Page 11 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Feature Descriptions 20 1x22uF External Cap 18 Enable (Remote On/Off) 2x22uF External Cap Ripple(mVp-p) The NQR002A0X4 2A power modules feature a Enable pin with positive logic for remote On/Off operation. If the Enable pin is not being used, leave the pin open (the module will be ON). The Enable signal (VOn/Off) is referenced to ground. During a Logic High on the Enable pin, the module remains ON. During Logic-Low, the module is turned OFF. 16 14 12 10 VIN+ MODULE 8 0.5 1.5 2.5 3.5 Output Voltage(Volts) 4.5 20K Rpullup PWM Enable 20K Figure 5. Output ripple voltage for various output voltages with external 1x22 F, 2x22 F ceramic capacitors at the output (2A load). Input voltage is 12V. I ON/OFF + VON/OFF GND For safety agency approval the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standards, i.e., UL ANSI/UL* 62368-1 and CAN/CSA+ C22.2 No. 62368-1 Recognized, DIN VDE 08681/A11:2017 (EN62368-1:2014/A11:2017). For the converter output to be considered meeting the Requirements of safety extra-low voltage (SELV) or ES1, the input must meet SELV/ES1 requirements. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. An input fuse for the module is recommended. Due to the wide input voltage and output voltage ranges of the module, a 4A, 125Vdc fast acting fuse is recommended Q2 10K 10K 10K Q1 Safety Considerations Q3 10K ON/OFF _ Figure 6. Remote On/Off Implementation(positive logic). Overcurrent Protection To provide protection in a fault (output overload) condition, the unit is equipped with internal current-limiting circuitry and can endure current limiting continuously. At the point of current-limit inception, the unit enters hiccup mode. The unit operates normally once the output current is brought back into its specified range. The average output current during hiccup is 10% IO, max. Overtemperature Protection To provide protection in a fault condition, these modules are equipped with a thermal shutdown circuit. The unit will shut down if the overtemperature threshold of 130C is exceeded at the thermal reference point Tref. The thermal shutdown is not intended as a guarantee that the unit will survive temperatures beyond its rating. Once the unit goes into thermal shutdown it will then wait to cool before attempting to restart. Input Undervoltage Lockout At input voltages below the input undervoltage lockout limit, the module operation is disabled. The module will begin to operate at an input voltage above the undervoltage lockout turn-on threshold. Output Voltage Programming The output voltage of the NQR002A0X4 2A module can be programmed to any voltage from 0.6dc to 5.5Vdc by connecting a resistor between the Trim+ and GND pins of the module. Certain restrictions apply on the output voltage set point depending on the input voltage. These are shown in the Output Voltage vs. Input Voltage Set Point Area plot in Fig. 7. The Lower September 3, 2020 (c)2014 General Electric Company. All rights reserved. Page 12 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Limit curve shows that for output voltages of 2.4V and higher, the input voltage needs to be larger than the minimum of 3V. Table 1 VO, set (V) 0.6 0.9 1.0 1.2 1.5 1.8 2.5 3.3 5.0 Feature Descriptions (continued) 16 Input Voltage (v) 14 12 10 8 Rtrim (K) Open 40 30 20 13.33 10 6.316 4.444 2.727 6 4 2 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 Output Voltage (V) Figure 7. Output Voltage vs. Input Voltage Set Point Area plot showing limits where the output voltage can be set for different input voltages. Without an external resistor between Trim+ and GND pins, the output of the module will be 0.6Vdc. To calculate the value of the trim resistor, Rtrim for a desired output voltage, use the following equation: 12 Rtrim = k (Vo - 0.6) Rtrim is the external resistor in k By using a 0.5% tolerance trim resistor with a TC of 25ppm, a set point tolerance of 1.5% can be achieved as specified in the electrical specification. The POL Programming Tool available at www.lineagepower.com under the Design Tools section, helps determine the required trim resistor needed for a specific output voltage. V IN(+) V O(+) Vout ON/OFF LOAD TRIM R trim GND Vo is the desired output voltage Figure 8. Circuit configuration for programming output voltage using an external resistor. Table 1 provides Rtrim values required for some common output voltages. Voltage Margining Output voltage margining can be implemented in the NQR002A0X4 2A modules by connecting a resistor, Rmargin-up, from the Trim pin to the ground pin for margining-up the output voltage and by connecting a resistor, Rmargin-down, from the Trim pin to output pin for margining-down. Figure 9 shows the circuit configuration for output voltage margining. The POL Programming Tool, available at www.lineagepower.com under the Design Tools section, also calculates the values of Rmargin-up and Rmargin-down for a specific output voltage and % margin. Please consult your local Lineage Power Field Application Engineer or Account Manager for additional details. September 3, 2020 (c)2014 General Electric Company. All rights reserved. Page 13 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current R-C to tune the module for best transient performance and stable operation for other output capacitance values. Feature Descriptions (continued) Vo Rmargin-down VOUT MODULE RTUNE Q2 MODULE Trim CTUNE Rmargin-up TRIM Rtri m RTrim GND Q1 GND Figure. 10. Circuit diagram showing connection of RTUME and CTUNE to tune the control loop of the module. Figure 9. Circuit Configuration for margining Output voltage. Monotonic Start-up and Shutdown The NQR002A0X4 2A modules have monotonic start-up and shutdown behavior for any combination of rated input voltage, output current and operating temperature range. Tunable LoopTM The NQR002A0X4 2A modules have a new feature that optimizes transient response of the module called Tunable LoopTM. External capacitors are usually added to improve output voltage transient response due to load current changes. Sensitive loads may also require additional output capacitance to reduce output ripple and noise. Adding external capacitance however affects the voltage control loop of the module, typically causing the loop to slow down with sluggish response. Larger values of external capacitance could also cause the module to become unstable. To use the additional external capacitors in an optimal manner, the Tunable LoopTM feature allows the loop to be tuned externally by connecting a series R-C between the VOUT and TRIM pins of the module, as shown in Fig. 10. This R-C allows the user to externally adjust the voltage loop feedback compensation of the module to match the filter network connected to the output of the module. Recommended values of RTUNE and CTUNE are given in Tables 2 and 3. Table 2 lists recommended values of RTUNE and CTUNE in order to meet 2% output voltage deviation limits for some common output voltages in the presence of a 1A to 2A step change (50% of full load), with an input voltage of 12V. Table 3 shows the recommended values of RTUNE and CTUNE for different values of ceramic output capacitors up to TBD, again for an input voltage of 12V. The value of RTUNE should never be lower than the values shown in Tables 3 and 4. Please contact your Lineage Power technical representative to obtain more details of this feature as well as for guidelines on how to select the right value of external September 3, 2020 Table 2. Recommended values of RTUNE and CTUNE to obtain transient deviation of 2% of Vout for a 1A step load with Vin=12V. Co 1x47F 2x47F 3x47F 4x47F 10x47F RTUNE 220 150 100 100 100 CTUNE 3900pF 10nF 18nF 18nF 22nF Table 3. General recommended values of of RTUNE and CTUNE for Vin=12V and various external ceramic capacitor combinations. Vo 5V 3.3V 2.5V 1.8V 1.2V 0.6V Co 1x22F 1x47F 2x47F 2x47F 3x47F 330F Polymer RTUNE 220 220 150 150 100 CTUNE 2200pF 3900pF 10nF 10nF 18nF V 81mV 61mV 35mV 34mV 23mV 100 68nF 12mV Table 4. Recommended values of RTUNE and CTUNE to obtain transient deviation of 2% of Vout for a 1A step load with Vin=5V Vo 3.3V 2.5V 1.8V 1.2V 0.6V 1x47F 2x47F 2x47F 3x47F 330F Polymer RTUNE 220 150 150 100 100 CTUNE 3900pF 10nF 10nF 18nF 68nF V 62mV 35mV 34mV 23mV 12mV Co (c)2014 General Electric Company. All rights reserved. Page 14 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Table 5. Recommended values of RTUNE and CTUNE to obtain transient deviation of 2% of Vout for a 1A step load with Vin=3.3V Vo 2.5V 1.8V 1.2V 0.6V Co 3x47F 2x47F 3x47F 330F Polymer RTUNE 100 150 100 100 CTUNE 18nF 10nF 18nF 68nF V 48mV 34mV 23mV 12mV September 3, 2020 (c)2014 General Electric Company. All rights reserved. Page 15 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Thermal Considerations Power modules operate in a variety of thermal environments; however, sufficient cooling should be provided to help ensure reliable operation. Considerations include ambient temperature, airflow, module power dissipation, and the need for increased reliability. A reduction in the operating temperature of the module will result in an increase in reliability. The thermal data presented here is based on physical measurements taken in a wind tunnel. The test set-up is shown in Figure 11. The preferred airflow direction for the module is in Figure 12. Wind Tunnel 50.8 [2.00] PWBs Power Module Figure 12. Tref Temperature measurement location. 76.2 [3.0] 7.24 [0.285] Probe Location for measuring airflow and ambient temperature Air Flow Post solder cleaning is usually the final circuit-board assembly process prior to electrical board testing. The result of inadequate cleaning and drying can affect both the reliability of a power module and the testability of the finished circuit-board assembly. For guidance on appropriate soldering, cleaning and drying procedures, refer to Board Mounted Power Modules: Soldering and Cleaning Application Note. Through-Hole Lead-Free Soldering Information Figure 11. Thermal Test Set-up. The thermal reference point, Tref used in the specifications of thermal derating curves is shown in Figure 12. For reliable operation this temperature should not exceed 120oC. The output power of the module should not exceed the rated power of the module (Vo,set x Io,max). Please refer to the Application Note "Thermal Characterization Process For Open-Frame Board-Mounted Power Modules" for a detailed discussion of thermal aspects including maximum device temperatures. September 3, 2020 Post solder Cleaning and Drying Considerations These RoHS-compliant through-hole products use the SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant components. They are designed to be processed through single or dual wave soldering machines. The pins have an RoHS-compliant finish that is compatible with both Pb and Pb-free wave soldering processes. A maximum preheat rate of 3C/s is suggested. The wave preheat process should be such that the temperature of the power module board is kept below 210C. For Pb solder, the recommended pot temperature is 260C, while the Pb-free solder pot is 270C max. Not all RoHS-compliant through-hole products can be processed with paste-through-hole Pb or Pb-free reflow process. If additional information is needed, please consult with your Lineage Power representative for more details. (c)2014 General Electric Company. All rights reserved. Page 16 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Example Application Circuit Requirements: Vin: 12V Vout: 1.8V Iout: 1A max., worst case load transient is from 1A to 1.5A Vout: 1.5% of Vout (27mV) for worst case load transient Vin, ripple 1.5% of Vin (180mV, p-p) Vout+ Vin+ VIN VOUT MODULE + CI2 RTUNE MODULE CI1 CTUNE Q3 ON/OFF TRIM GND RTrim CI1 1x10F/16V ceramic capacitor (e.g. TDK C Series) CI2 100F/16V bulk electrolytic CO1 1x47F/6.3V ceramic capacitor (e.g. TDK C Series, Murata GRM32ER60J476ME20) CTune 3900pF ceramic capacitor (can be 1206, 0805 or 0603 size) RTune 180 ohms SMT resistor (can be 1206, 0805 or 0603 size) RTrim 10k SMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%) September 3, 2020 CO1 (c)2014 General Electric Company. All rights reserved. Page 17 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Mechanical Outline Dimensions are in millimeters and (inches). Tolerances: x.x mm 0.5 mm (x.xx in. 0.02 in.) [unless otherwise indicated] x.xx mm 0.25 mm (x.xxx in 0.010 in.) September 3, 2020 (c)2014 General Electric Company. All rights reserved. Page 18 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Recommended Pad Layout Dimensions are in millimeters and (inches). Tolerances: x.x mm 0.5 mm (x.xx in. 0.02 in.) [unless otherwise indicated] x.xx mm 0.25 mm (x.xxx in 0.010 in.) September 3, 2020 (c)2014 General Electric Company. All rights reserved. Page 19 GE Data Sheet NQR002A0X4: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Ordering Information Please contact your GE Sales Representative for pricing, availability and optional features. Table 4. Device Codes Device Code Input Voltage Range Output Voltage Output Current On/Off Logic Connector Type Comcodes NQR002A0X4Z 3 - 14Vdc 0.6 - 5.5Vdc 2A Positive SIP CC109171468 -Z refers to RoHS compliant parts Contact Us For more information, call us at USA/Canada: +1 888 546 3243, or +1 972 244 9288 Asia-Pacific: +86-21-53899666 Europe, Middle-East and Africa: +49.89.878067-280 Go.ABB/Industrial GE Critical Power reserves the right to make changes to the product(s) or information contained herein without notice, and no liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. September 3, 2020 (c)2016 General Electric Company. All International rights reserved. Version 1_2