Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5Vdc –14Vdc input; 0.59Vdc to 6Vdc Output;10A Output Current Features RoHS Compliant Applications Distributed power architectures Intermediate bus voltage applications Telecommunications equipment Servers and storage applications Networking equipment Industrial applications Compliant to RoHS EU Directive 2002/95/EC (Z versions) Compatible in a Pb-free or SnPb wave-soldering environment (Z versions) Wide Input voltage range (4.5Vdc-14Vdc) Output voltage programmable from 0.59 Vdc to 6Vdc via external resistor Tunable Loop response Fixed switching frequency Output over current protection (non-latching) Over temperature protection Remote On/Off Small size: 10.4 mm x 16.5 mm x 8.4 mm TM to optimize dynamic output voltage (0.41 in x 0.65 in x 0.33 in) Wide operating temperature range (-40°C to 85°C) UL* 60950-1Recognized, CSA† C22.2 No. 60950-103 Certified, and VDE‡ 0805:2001-12 (EN60950-1) Licensed ISO** 9001 and ISO 14001 certified manufacturing facilities Description The NQR010A0X4 SIP power modules are non-isolated dc-dc converters in an industry standard package that can deliver up to 10A of output current with a full load efficiency of 94% at 5Vdc output voltage (VIN = 12Vdc). These modules operate over a wide range of input voltage (VIN = 4.5Vdc-14Vdc) and provide a precisely regulated output voltage from 0.59Vdc to 6Vdc, 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 ‡ Document No: DS09-011 ver. 1.4 PDF name: NQR010A0X_ds.pdf Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A 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 Device Symbol Min Max Unit All VIN -0.3 15 Vdc All TA -40 85 °C All Tstg -55 125 °C Input Voltage 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 4.5 12 14 Vdc Maximum Input Current All IIN,max 10 Adc (VIN = 12Vdc, IO = 0, module ON) VO,set = 0.6 Vdc IIN,No load (VIN = 12Vdc, IO = 0, module ON) VO,set = 5.0Vdc IIN,No load 58 mA All IIN,stand-by 1.505 mA Inrush Transient All It Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1μH source impedance; VIN =0 to 14V, IO= IOmax ; See Test Configurations) All 34 mAp-p Input Ripple Rejection (120Hz) All 58 dB (VIN=4.5V to 14V, IO=IO, max ) Input No Load Current Input Stand-by Current 29 mA (VIN = 12Vdc, module disabled) LINEAGE POWER 2 1 2 As 2 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A output current Electrical Specifications (continued) Parameter Device Symbol Min Output Voltage Set-point (with 0.5% tolerance for external resistor used to set output voltage) All VO, set -1.5 Output Voltage All VO, set -3.0 All VO 0.59 Typ ⎯ Max Unit +1.5 % VO, set +3.0 % VO, set 6 Vdc (Over all operating input voltage, resistive load, and temperature conditions until end of life) Adjustment Range Selected by an external resistor Output Regulation (for Vo ≥ 2.5Vdc) Line (VIN=VIN, min to VIN, max) All Load (IO=IO, min to IO, max) All -0.2 ⎯ +0.2 % VO, set ⎯ 0.8 % VO, set ⎯ +5 mV 20 mV Output Regulation (for Vo <2.5Vdc) Line (VIN=VIN, min to VIN, max) All -5 Load (IO=IO, min to IO, max) All ⎯ Peak-to-Peak (5Hz to 20MHz bandwidth) VO = 0.59Vdc 17 mVpk-pk Peak-to-Peak (5Hz to 20MHz bandwidth) VO = 1.2Vdc 22 mVpk-pk Peak-to-Peak (5Hz to 20MHz bandwidth) VO = 1.8Vdc 30 mVpk-pk Peak-to-Peak (5Hz to 20MHz bandwidth) VO = 2.5Vdc 34 mVpk-pk Peak-to-Peak (5Hz to 20MHz bandwidth) VO = 3.3Vdc 42 mVpk-pk Peak-to-Peak (5Hz to 20MHz bandwidth) VO = 5.0Vdc 50 mVpk-pk Peak-to-Peak (5Hz to 20MHz bandwidth) VO = 6.0Vdc 53 mVpk-pk Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max Cout = 10μF) External Capacitance 1 TM Without the Tunable Loop All CO, max 10 ⎯ 200 μF ESR ≥ 0.15 mΩ All CO, max 10 ⎯ 1000 μF ESR ≥ 10 mΩ All CO, max 10 ⎯ 5000 μF Output Current All Io 0 10 Adc Output Current Limit Inception (Hiccup Mode ) All IO, lim 200 % Io,max Output Short-Circuit Current All IO, s/c 0.65 Arms VO,set = 0.59Vdc η 73 % ESR ≥ 1 mΩ With the Tunable Loop TM (VO≤250mV) ( Hiccup Mode ) Efficiency (VIN= 6Vdc) VIN= 12Vdc, TA=25°C VO, set = 1.2Vdc η 82 % IO=IO, max , VO= VO,set VO,set = 1.8Vdc η 87 % VO,set = 2.5Vdc η 90 % VO,set = 3.3Vdc η 92 % VO,set = 5.0Vdc η 94 % VO,set = 6.0Vdc η 95 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 TM getting the best transient response. See the Tunable Loop section for details. LINEAGE POWER 3 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A output current Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit (dIo/dt=10A/μs; VIN = VIN, nom; Vout = 1.8V, TA=25°C) Load Change from Io= 0% to 50% of Io,max; Co = 10μF Peak Deviation All Vpk 280 mV Settling Time (Vo<10% peak deviation) All ts 40 μs Load Change from Io= 50% to 0%of Io,max: Co = 10μF Peak Deviation All Vpk 325 mV Settling Time (Vo<10% peak deviation) All ts 40 μs Dynamic Load Response General Specifications Parameter Min Calculated MTBF (VIN=12V, VO=5Vdc, IO=0.8IO, max, TA=40°C) Per Telcordia Method Weight LINEAGE POWER Typ Max 6,925,356 ⎯ 2.5 (0.088) Unit Hours ⎯ g (oz.) 4 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A output current Feature 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 Min Typ Max Unit 1.0 ― 0.5 mA ― VIN, max V On/Off Signal interface (VIN=VIN, min to VIN, max; Open collector or equivalent signal referenced to GND) Logic High (On/Off pin open - Module ON) Input High Current All IIH Input High Voltage All VIH Logic Low (Module Off) Input Low Current All IIL ― ― 200 μA Input Low Voltage All VIL -0.3 ― 0.4 V All Tdelay 3 msec All Tdelay 3 msec All Trise 5 msec 1.5 % VO, set Turn-On Delay and Rise Times (IO=IO, max , VIN = VIN, nom, Vo to within ±1% of steady state) Case 1: On/Off 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 On/Off input is set enabled (delay from instant at which On/Off 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 o IO= IO, max; VIN = VIN, min to VIN, max, TA = 25 C Overtemperature Protection All Tref 145 ºC Input Undervoltage Lockout Turn-on Threshold All 4.25 Vdc Turn-off Threshold All 3.66 Vdc LINEAGE POWER 5 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A output current Characteristic Curves 85 11 80 10 OUTPUT CURRENT, Io (A) EFFICIENCY, η (%) The following figures provide typical characteristics for the NQR010 module at 0.6Vout and at 25ºC. 75 70 65 Vin = 4.5V Vin = 6V Vin = 9V 60 55 50 0 2 4 6 8 LINEAGE POWER 5 1.5m/s (300LFM) 1m/s (200LFM) 0.5m/s (100LFM) NC 4 3 35 45 55 65 75 85 IO (A) (5Adiv) OUTPUT VOLTAGE OUTPUT CURRENT, VO (V) (500mV/div) Figure 2. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (100μs /div) VIN (V) (5V/div) VO (V) (200mV/div) Figure 4. Transient Response to Dynamic Load Change from 0% to 50% to 0% with VIN=9V. INPUT VOLTAGE VON/OFF (V) (5V/div) VO (V) (200mV/div) Figure 5. Typical Start-up Using On/Off Voltage (Io = Io,max). 2m/s (400LFM) 6 O OUTPUT VOLTAGE VO (V) (20mV/div) OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE TIME, t (1ms/div) 7 AMBIENT TEMPERATURE, TA C Figure 1. Converter Efficiency versus Output Current. Figure 3. Typical output ripple and noise (VIN = 9V, Io = Io,max). 8 25 10 OUTPUT CURRENT, IO (A) TIME, t (1μs/div) 9 TIME, t (1ms/div) Figure 6. Typical Start-up Using Input Voltage (VIN = 9V, Io = Io,max). 6 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A output current Characteristic Curves (continued) The following figures provide typical characteristics for the NQR010 module at 1.2Vout and at 25ºC. 11 90 10 85 OUTPUT CURRENT, Io (A) EFFICIENCY, η (%) Vin = 12V Vin = 4.5V 80 Vin = 14V 75 70 0 2 4 6 8 1m/s (200LFM) 0.5m/s (100LFM) NC 4 3 35 45 55 65 75 85 OUTPUT VOLTAGE VO (V) (500mV/div) IO (A) (5Adiv) OUTPUT CURRENT, TIME, t (100μs /div) VIN (V) (5V/div) VO (V) (500mV/div) Figure 10. Transient Response to Dynamic Load Change from 0% to 50% to 0% with VIN=12V. INPUT VOLTAGE VON/OFF (V) (5V/div) VO (V) (500mV/div) LINEAGE POWER 5 1.5m/s (300LFM) Figure 8. Derating Output Current versus Ambient Temperature and Airflow. OUTPUT VOLTAGE VO (V) (20mV/div) OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE Figure 11. Typical Start-up Using On/Off Voltage (Io = Io,max). 2m/s (400LFM) 6 AMBIENT TEMPERATURE, TA C Figure 7. Converter Efficiency versus Output Current. TIME, t (1ms/div) 7 O OUTPUT CURRENT, IO (A) Figure 9. Typical output ripple and noise (VIN = 12V, Io = Io,max). 8 25 10 TIME, t (1μs/div) 9 TIME, t (1ms/div) Figure 12. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). 7 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A output current Characteristic Curves (continued) The following figures provide typical characteristics for the NQR010 module at 1.8Vout and at 25ºC. 11 95 10 OUTPUT CURRENT, Io (A) EFFICIENCY, η (%) 90 Vin = 4.5V 85 Vin = 12V 80 Vin = 14V 75 70 0 2 4 6 8 LINEAGE POWER 5 0.5m/s (100LFM) NC 4 3 35 45 55 65 75 85 IO (A) (5Adiv) OUTPUT VOLTAGE OUTPUT CURRENT, VO (V) (500mV/div) Figure 14. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (100μs /div) INPUT VOLTAGE VIN (V) (5V/div) VO (V) (500mV/div) Figure 16. Transient Response to Dynamic Load Change from 0% to 50% to 0% with VIN=12V. OUTPUT VOLTAGE VO (V) (20mV/div) OUTPUT VOLTAGE VON/OFF (V) (5V/div) VO (V) (500mV/div) VOLTAGE Figure 17. Typical Start-up Using On/Off Voltage (Io = Io,max). 1.5m/s (300LFM) 2m/s (400LFM) 1m/s (200LFM) 6 AMBIENT TEMPERATURE, TA C Figure 13. Converter Efficiency versus Output Current. TIME, t (1ms/div) 7 O OUTPUT CURRENT, IO (A) Figure 15. Typical output ripple and noise (VIN = 12V, Io = Io,max). 8 25 10 TIME, t (1μs/div) 9 TIME, t (1ms/div) Figure 18. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). 8 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A output current Characteristic Curves (continued) The following figures provide typical characteristics for the NQR010 module at 2.5Vout and at 25ºC. 11 100 10 OUTPUT CURRENT, Io (A) EFFICIENCY, η (%) 95 90 85 Vin = 4.5V Vin = 12V Vin = 14V 80 75 70 0 2 4 6 8 1m/s (200LFM) 5 0.5m/s (100LFM) 4 NC 3 35 45 55 65 75 85 OUTPUT VOLTAGE VO (V) (500mV/div) IO (A) (5Adiv) OUTPUT CURRENT, TIME, t (100μs /div) VIN (V) (5V/div) VO (V) (1V/div) Figure 22. Transient Response to Dynamic Load Change from 0% to 50% to 0% with VIN=12V. INPUT VOLTAGE VON/OFF (V) (5V/div) VO (V) (1V/div) LINEAGE POWER 1.5m/s (300LFM) Figure 20. Derating Output Current versus Ambient Temperature and Airflow. OUTPUT VOLTAGE VO (V) (20mV/div) OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE Figure 23. Typical Start-up Using On/Off Voltage (Io = Io,max). 2m/s (400LFM) 6 AMBIENT TEMPERATURE, TA C Figure 19. Converter Efficiency versus Output Current. TIME, t (1ms/div) 7 O OUTPUT CURRENT, IO (A) Figure 21. Typical output ripple and noise (VIN = 12V, Io = Io,max). 8 25 10 TIME, t (1μs/div) 9 TIME, t (1ms/div) Figure 24. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). 9 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A output current Characteristic Curves (continued) The following figures provide typical characteristics for the NQR010 module at 3.3Vout and at 25ºC. 11 100 10 OUTPUT CURRENT, Io (A) EFFICIENCY, η (%) 95 90 85 Vin = 4.5V 80 Vin = 12V Vin = 14V 75 70 0 2 4 6 8 LINEAGE POWER 1.5m/s (300LFM) 1m/s (200LFM) 5 0.5m/s (100LFM) 4 NC 3 35 45 55 65 75 85 IO (A) (5Adiv) OUTPUT VOLTAGE OUTPUT CURRENT, VO (V) (500mV/div) Figure 26. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (100μs /div) INPUT VOLTAGE VIN (V) (5V/div) VO (V) (1V/div) Figure 28. Transient Response to Dynamic Load Change from 0% to 50% to 0% with VIN=12V. OUTPUT VOLTAGE VO (V) (20mV/div) OUTPUT VOLTAGE VON/OFF (V) (5V/div) VO (V) (1V/div) VOLTAGE Figure 29. Typical Start-up Using On/Off Voltage (Io = Io,max). 2m/s (400LFM) 6 AMBIENT TEMPERATURE, TA C Figure 25. Converter Efficiency versus Output Current. TIME, t (1ms/div) 7 O OUTPUT CURRENT, IO (A) Figure 27. Typical output ripple and noise (VIN = 12V, Io = Io,max). 8 25 10 TIME, t (1μs/div) 9 TIME, t (1ms/div) Figure 30. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). 10 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A output current Characteristic Curves (continued) The following figures provide typical characteristics for the NQR010 module at 5Vout and at 25ºC. 11 100 10 OUTPUT CURRENT, Io (A) EFFICIENCY, η (%) 95 90 Vin = 6.5V 85 Vin = 12V Vin = 14V 80 75 70 0 2 4 6 8 4 0.5m/s 1m/s (100LFM) (200LFM) NC 3 35 45 55 65 75 85 OUTPUT VOLTAGE VO (V) (500mV/div) IO (A) (5Adiv) OUTPUT CURRENT, TIME, t (100μs /div) VIN (V) (5V/div) VO (V) (2V/div) Figure 34. Transient Response to Dynamic Load Change from 0% to 50% to 0% with VIN=12V. INPUT VOLTAGE VON/OFF (V) (5V/div) VO (V) (2V/div) LINEAGE POWER 5 1.5m/s (300LFM) Figure 32. Derating Output Current versus Ambient Temperature and Airflow. OUTPUT VOLTAGE VO (V) (20mV/div) OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE Figure 35. Typical Start-up Using On/Off Voltage (Io = Io,max). 2m/s (400LFM) 6 AMBIENT TEMPERATURE, TA C Figure 31. Converter Efficiency versus Output Current. TIME, t (1ms/div) 7 O OUTPUT CURRENT, IO (A) Figure 33. Typical output ripple and noise (VIN = 12V, Io = Io,max). 8 25 10 TIME, t (1μs/div) 9 TIME, t (1ms/div) Figure 36. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). 11 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A output current Characteristic Curves The following figures provide typical characteristics for the NQR010 module at 6Vout and at 25ºC. 11 100 10 OUTPUT CURRENT, Io (A) EFFICIENCY, η (%) 95 90 Vin = 7.5V Vin = 12V Vin = 14V 85 80 75 70 0 2 4 6 8 4 NC 3 35 45 55 65 75 85 OUTPUT VOLTAGE VO (V) (500mV/div) IO (A) (5Adiv) OUTPUT CURRENT, TIME, t (100μs /div) VIN (V) (5V/div) VO (V) (2V/div) Figure 40. Transient Response to Dynamic Load Change from 0% to 50% to 0% with VIN=12V. INPUT VOLTAGE VON/OFF (V) (5V/div) VO (V) (2V/div) LINEAGE POWER 5 AMBIENT TEMPERATURE, TA C OUTPUT VOLTAGE VO (V) (20mV/div) OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE Figure 41. Typical Start-up Using On/Off Voltage (Io = Io,max). 1.5m/s 2m/s (400LFM) (300LFM) 1m/s (200LFM) 0.5m/s (100LFM) 6 Figure 38. Derating Output Current versus Ambient Temperature and Airflow. Figure 37. Converter Efficiency versus Output Current. TIME, t (1ms/div) 7 O OUTPUT CURRENT, IO (A) TIME, t (1μs/div) 8 25 10 Figure 39. Typical output ripple and noise (VIN = 12V, Io = Io,max). 9 TIME, t (1ms/div) Figure 42. Typical Start-up Using Input Voltage (VIN = 9V, Io = Io,max). 12 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A output current Test Configurations Design Considerations CURRENT PROBE The NQR010A0X4 10A module should be connected to a low ac-impedance 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. To minimize input voltage ripple, low-ESR ceramic or polymer capacitors are recommended at the input of the module. Figure 46 shows the input ripple voltage for various output voltages at 10A of load current with 1x22 µF or 2x22 µF ceramic capacitors and an input of 12V. LTEST VIN(+) BATTERY 1μH CIN CS 1000μF Electrolytic 2x100μF Tantalum E.S.R.<0.1Ω @ 20°C 100kHz COM NOTE: Measure input reflected ripple current with a simulated source inductance (LTEST) of 1μH. Capacitor CS offsets possible battery impedance. Measure current as shown above. Figure 43. Input Reflected Ripple Current Test Setup. COPPER STRIP VO (+) RESISTIVE LOAD 1uF . 10uF Input Filtering SCOPE COM Input Ripple Voltage (mVp-p) TO OSCILLOSCOPE 300 250 200 150 100 1x22uF 50 2x22uF 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 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 44. Output Ripple and Noise Test Setup. Rdistribution Rcontact Rcontact VIN(+) RLOAD VO VIN Rdistribution Rcontact Rcontact COM Rdistribution VO 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 45. Output Voltage and Efficiency Test Setup. VO. IO Efficiency η = LINEAGE POWER VIN. IIN x 100 % Output Voltage (Vdc) Figure 46. Input ripple voltage for various output voltages with 1x22 µF or 2x22 µF ceramic capacitors at the input (10A load). Input voltage is 12V. Output Filtering The NQR010A0X4 10A 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 47 provides output ripple information for different external capacitance values at various Vo and for a load current of 10A. For stable operation of the module, limit the capacitance to less than the maximum output capacitance as specified in the electrical specification table. Optimal 13 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A output current performance of the module can be achieved by using the Tunable LoopTM feature described later in this data sheet. Ripple (mVp-p) 50 1x10uF 1x47uF 2x47uF 4x47uF 30 External External External External Remote On/Off The NQR010A0X4 10A power modules feature an On/Off pin with positive logic for remote On/Off operation. If the On/Off pin is not being used, leave the pin open (the module will be ON). The On/Off signal (VOn/Off) is referenced to ground. During a Logic High on the On/Off pin, the module remains ON. During LogicLow, the module is turned OFF. 60 40 Feature Descriptions Cap Cap Cap Cap 20 MODULE 10 VIN 0 0.5 1 1.5 2 2.5 3 3.5 Output Voltage (Volts) 4 4.5 10K 5 Figure 47. Output ripple voltage for various output voltages with external 1x10 µF, 1x47 µF, 2x47 µF or 4x47 µF ceramic capacitors at the output (10A load). Input voltage is 12V. 30.1K R1 100K ON/OFF 2.2K ENABLE 2.2K 47K Safety Considerations 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 60950-1 2nd Edition, CSA C22.2 No. 60950-107, and VDE 0805-1+A11:2009-11 (DIN EN60950-1 2nd Edition) Licensed. For the converter output to be considered meeting the requirements of safety extra-low voltage (SELV), the input must meet SELV requirements. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. A 15A quick acting input fuse for the module is required. 47K GND Figure 48. Remote On/Off Implementation. 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 130ºC 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. LINEAGE POWER 14 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A output current Table 1 Feature Descriptions (continued) Output Voltage Programming The output voltage of the NQR010A0X4 10A module can be programmed to any voltage from 0.59dc to 6Vdc 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. 49. The Upper Limit curve shows that for output voltages of 0.9V and lower, the input voltage must be lower than the maximum of 14V. The Lower Limit curve shows that for output voltages of 3.3V and higher, the input voltage needs to be larger than the minimum of 4.5V. 16 Input Voltage (v) 14 12 10 VO, set (V) Rtrim (KΩ) 0.59 1.0 1.2 1.5 1.8 2.5 3.3 5.0 6.0 Open 2.89 1.941 1.3 0.978 0.619 0.436 0.268 0.219 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. 8 6 V IN(+) 4 V O(+) Vout 2 ON/OFF 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 LOAD TRIM Output Voltage (V) Figure 49. 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 0.59Vdc. To calculate the value of the trim resistor, Rtrim for a desired output voltage, use the following equation: 1.182 Rtrim = kΩ (Vo − 0.591) Rtrim is the external resistor in kΩ Vo is the desired output voltage Table 1 provides Rtrim values required for some common output voltages. LINEAGE POWER R trim GND Figure 50. Circuit configuration for programming output voltage using an external resistor. Voltage Margining Output voltage margining can be implemented in the NQR010A0X4 10A 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 51 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. 15 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A output current Feature Descriptions (continued) Vo Rmargin-down MODULE Q2 Trim 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 1000uF, again for an input voltage of 12V. The value of RTUNE should never be lower than the values shown in Tables 2 and 3. 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 R-C to tune the module for best transient performance and stable operation for other output capacitance values. Rmargin-up VOUT Rtrim RTUNE Q1 MODULE GND CTUNE Figure 51. Circuit Configuration for margining Output voltage. TRIM GND RTrim Monotonic Start-up and Shutdown The NQR010A0X4 10A modules have monotonic startup and shutdown behavior for any combination of rated input voltage, output current and operating temperature range. Tunable LoopTM The NQR010A0X4 10A modules have a new feature that optimizes transient response of the module called TM Tunable Loop . 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 TM manner, the Tunable Loop 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. 52. 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. Figure. 52. Circuit diagram showing connection of RTUME and CTUNE to tune the control loop of the module. Table 2. Recommended values of RTUNE and CTUNE to obtain transient deviation of 2% of Vout for a 5A step load with Vin=12V. Vout 5V 3.3V 2.5V 1.8V 1.2V 0.6V Cext 4x47μF 330μF 330μF 2x330μF 3x330μF 9x330μF Polymer Polymer Polymer Polymer Polymer RTUNE 47 47 47 47 47 30 CTUNE 39nF 100nF 100nF 220nF 220nF 330nF ΔV 76mV 39mV 39mV 25mV 22mV 12mV Table 3. General recommended values of of RTUNE and CTUNE for Vin=12V and various external ceramic capacitor combinations. Cext 1x47μF 2x47μF 4x47μF 6x47μF 10x47μF 20x47μF RTUNE 100 75 47 47 47 47 CTUNE 12nF 22nF 39nF 56n 68nF 100nF 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 5A to 10A step change (50% of full load), LINEAGE POWER 16 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A 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 53. The preferred airflow direction for the module is in Figure 54. Wind Tunnel Post solder Cleaning and Drying Considerations 50.8 [2.00] PWBs Power Module 76.2 [3.0] 7.24 [0.285] Figure 54. Tref Temperature measurement location. Probe Location for measuring airflow and ambient temperature Air Flow Figure 53. Thermal Test Set-up. The thermal reference point, Tref used in the specifications of thermal derating curves is shown in Figure 54. For reliable operation this temperature o should not exceed 125 C. The output power of the module should not exceed the rated power of the module (Vo,set x Io,max). 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 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 3°C/s is suggested. The wave preheat process should be such that the temperature of the power module board is kept below 210°C. For Pb solder, the recommended pot temperature is 260°C, while the Pb-free solder pot is 270°C 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. Please refer to the Application Note “Thermal Characterization Process For Open-Frame BoardMounted Power Modules” for a detailed discussion of thermal aspects including maximum device temperatures. LINEAGE POWER 17 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A 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.) Rear View Side View Pin out LINEAGE POWER Pin Function 1 On/Off 2 VIN 3 GND 4 Vout 5 Trim+ 18 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A 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.) LINEAGE POWER 19 Data Sheet January 14, 2011 NQR010A0X4: Non-Isolated DC-DC Power Modules 4.5 – 14Vdc input; 0.59Vdc to 6Vdc Output; 10A output current Ordering Information Please contact your Lineage Power 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 NQR010A0X4Z 4.5 – 14Vdc 0.59 – 6Vdc 10A Positive SIP CC109153012 Z refers to RoHS-compliant versions Asia-Pacific Headquarters Tel: +86.021.54279977*808 World Wide Headquarters Lineage Power Corporation 601 Shiloh Road, Plano, TX 75074, USA +1-888-LINEAGE(546-3243) (Outside U.S.A.: +1-972-244-WATT(9288)) www.lineagepower.com e-mail: [email protected] Europe, Middle-East and Africa Headquarters Tel: +49.89.878067-280 India Headquarters Tel: +91.80.28411633 Lineage Power reserves the right to make changes to the product(s) or information contained herein without notice. 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. Lineage Power DC-DC products are protected under various patents. Information on these patents is available at www.lineagepower.com/patents. © 2010 Lineage Power Corporation, (Plano, Texas) All International Rights Reserved. LINEAGE POWER 20 Document No: DS009-011 ver. 1.4 PDF name: NQR010A0X_ds.pdf