GE Data Sheet 2A PicoTLynxTM: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current . Features RoHS Compliant Applications Compliant to RoHS II EU "Directive 2011/65/EU" Compatible in a Pb-free or SnPb reflow environment (Z versions) Wide Input voltage range (3Vdc-14Vdc) Output voltage programmable from 0.6Vdc to 5.5Vdc via external resistor Tunable LoopTM to optimize dynamic output voltage response Remote sense Power Good signal Fixed switching frequency Output overcurrent protection (non-latching) Overtemperature protection Distributed power architectures Remote On/Off Intermediate bus voltage applications Ability to sink and source current Telecommunications equipment Cost efficient open frame design Servers and storage applications Small size: 12.2 mm x 12.2 mm x 6.25mm Networking equipment Industrial equipment Vin+ VIN PGOOD (0.48 in x 0.48 in x 0.246in) Vout+ VOUT SENSE MODULE Cin ON/OFF Wide operating temperature range (-40C to 85C) UL* 60950-1Recognized, CSA C22.2 No. 60950-1-03 Certified, and VDE 0805:2001-12 (EN60950-1) Licensed ISO** 9001 and ISO 14001 certified manufacturing facilities RTUNE CTUNE Q1 Co TRIM GND RTrim Description The 12V PicoTLynxTM 2A power modules are non-isolated dc-dc converters that can deliver up to 2A of output current. 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 with reduced amount of output capacitance leading to savings on cost and PWB area. * 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 # The PMBus name and logo are registered trademarks of the System Management Interface Forum (SMIF) June 19, 2014 (c)2014 General Electric Company. All rights reserved. GE Data Sheet 2A PicoTLynxTM: 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 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 3.0 Max Unit Operating Input Voltage All VIN Maximum Input Current All IIN,max 14.0 Vdc 1.8A Adc VO,set = 0.6 Vdc IIN,No load 20 mA VO,set = 5.5Vdc IIN,No load 48 mA Input Stand-by Current (VIN = 12.0Vdc, module disabled) All IIN,stand-by 8 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 (VIN=3V to 14V, IO=IO, max ) Input No Load Current (VIN = 12.0Vdc, IO = 0, module enabled) 1 A2s 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. June 19, 2014 (c)2014 General Electric Company. All rights reserved. Page 2 GE Data Sheet 2A PicoTLynxTM: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A 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 (Over all operating input voltage, resistive load, and temperature conditions until end of life) All VO, set -2.5 Adjustment Range (selected by an external resistor) (Some output voltages may not be possible depending on the input voltage - see Feature Descriptions Section) All VO 0.6 Remote Sense Range All Typ Max Unit +1.5 % VO, set +2.5 % VO, set 5.5 Vdc 0.5 Vdc Output Regulation (for VO 2.5Vdc) Line (VIN=VIN, min to VIN, max) All +0.4 % VO, set Load (IO=IO, min to IO, max) All 10 mV Line (VIN=VIN, min to VIN, max) All 10 mV Load (IO=IO, min to IO, max) All 5 mV Temperature (Tref=TA, min to TA, max) All 0.4 % VO, set 50 100 mVpk-pk 20 38 mVrms Output Regulation (for VO < 2.5Vdc) Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max Co = 0.1F // 10 F ceramic capacitors) Peak-to-Peak (5Hz to 20MHz bandwidth) RMS (5Hz to 20MHz bandwidth) All All External Capacitance1 Without the Tunable LoopTM ESR 1 m All CO 22 47 F ESR 0.15 m All CO, max 0 1000 F ESR 10 m 3000 F 2 Adc With the Tunable LoopTM All CO, max 0 Output Current (in either sink or source mode) All Io 0 Output Current Limit Inception (Hiccup Mode) (current limit does not operate in sink mode) All IO, lim 180 % Io,max Output Short-Circuit Current All IO, s/c 140 mA (VO250mV) ( Hiccup Mode ) Efficiency VO,set = 0.6Vdc VIN= 12Vdc, TA=25C VO, set = 1.2Vdc 68.7 80.7 % IO=IO, max , VO= VO,set VO,set = 1.8Vdc 85.9 % VO,set = 2.5Vdc 89 % VO,set = 3.3Vdc 91.1 % VO,set = 5.0Vdc 93.6 % All fsw Switching Frequency 600 % kHz LoopTM External capacitors may require using the new Tunable feature to ensure that the module is stable as well as getting the best transient response. See the Tunable LoopTM section for details. June 19, 2014 (c)2014 General Electric Company. All rights reserved. Page 3 GE Data Sheet 2A PicoTLynxTM: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current General Specifications Parameter Device Calculated MTBF (IO=0.8IO, max, TA=40C) Telecordia Issue 2 Method 1 Case 3 Min APXS Weight Typ Max 26,121,938 Unit Hours 0.9(0.0317) g (oz.) 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 On/Off Signal Interface (VIN=VIN, min to VIN, max ; open collector or equivalent, Signal referenced to GND) Device Code with no suffix - Negative Logic (See Ordering Information) (On/OFF pin is open collector/drain logic input with external pull-up resistor; signal referenced to GND) Logic High (Module OFF) Input High Current All IIH -- -- 1 mA Input High Voltage All VIH 3 -- VIN, max Vdc Logic Low (Module ON) Input low Current All IIL -- -- 10 A Input Low Voltage All VIL -0.2 -- 0.3 Vdc All Tdelay -- 5 -- msec All Tdelay -- 5.2 -- msec All Trise -- 1.4 -- msec 3.0 % VO, set Turn-On Delay and Rise Times (VIN=VIN, nom, IO=IO, max , 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 the On/Off input is enabled (delay from instant at which Von/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 (TA = 25oC VIN= VIN, min to VIN, max,IO = IO, min to IO, max) With or without maximum external capacitance Over Temperature Protection All Tref 140 C (See Thermal Considerations section) June 19, 2014 (c)2014 General Electric Company. All rights reserved. Page 4 GE Data Sheet 2A PicoTLynxTM: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Feature Specifications (cont.) Parameter Device Symbol Min Typ Max Units 2.95 Vdc 2.8 Vdc Input Undervoltage Lockout Turn-on Threshold All Turn-off Threshold All Hysteresis All 0.2 Vdc PGOOD (Power Good) Signal Interface Open Drain, Vsupply 5VDC Overvoltage threshold for PGOOD 112.5 %VO, set Undervoltage threshold for PGOOD 87.5 %VO, set Pulldown resistance of PGOOD pin June 19, 2014 All (c)2014 General Electric Company. All rights reserved. 30 70 Page 5 GE Data Sheet 2A PicoTLynxTM: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Characteristic Curves 85 2.5 80 2.0 75 OUTPUT CURRENT, Io (A) EFFICIENCY, (%) The following figures provide typical characteristics for the APXS002A0X-SRZ (0.6V, 2A) at 25oC. Vin=12V Vin=3V 70 65 Vin=14V 60 NC 1.5 1.0 Standard Test 0.5 Extended Test 0.0 55 0 0.4 0.8 1.2 1.6 45 2 OUTPUT CURRENT, IO (A) 95 105 C OUTPUT VOLTAGE VO (V) (100mV/div) IO (A) (1Adiv) TIME, t (20s /div) INPUT VOLTAGE VIN (V) (5V/div) VO (V) (200mV/div) Figure 4. Transient Response to Dynamic Load Change from 0% to 50% to 0% . OUTPUT VOLTAGE VON/OFF (V) (5V/div) VO (V) (200mV/div) OUTPUT VOLTAGE ON/OFF VOLTAGE June 19, 2014 85 AMBIENT TEMPERATURE, T TIME, t (1ms/div) Figure 5. Typical Start-up Using On/Off Voltage (Io = Io,max, Vin=12V,Cext= 22uF). 75 Figure 2. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (1s/div) Figure 3. Typical output ripple and noise (VIN = 12V, Io = Io,max). 65 AO OUTPUT CURRENT, VO (V) (10mV/div) OUTPUT VOLTAGE Figure 1. Converter Efficiency versus Output Current. 55 TIME, t (1ms/div) Figure 6. Typical Start-up Using Input Voltage (VIN = 12V, Io = Io,max). (c)2014 General Electric Company. All rights reserved. Page 6 GE Data Sheet 2A PicoTLynxTM: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Characteristic Curves 95 2.5 90 2.0 85 OUTPUT CURRENT, Io (A) EFFICIENCY, (%) The following figures provide typical characteristics for the APXS002A0X-SRZ (1.2V, 2A) at 25oC. Vin=12V Vin=3V 80 75 Vin=14V 70 NC 1.5 1.0 Standard Test 0.5 Extended Test 0.0 65 0 0.4 0.8 1.2 1.6 45 2 OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, T 95 105 C OUTPUT VOLTAGE VO (V) (100mV/div) IO (A) (1Adiv) 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 VON/OFF (V) (5V/div) ON/OFF VOLTAGE 85 TIME, t (20s /div) VO (V) (500mV/div) OUTPUT VOLTAGE 75 Figure 8. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (1s/div) Figure 9. Typical output ripple and noise (VIN = 12V, Io = Io,max). TIME, t (2ms/div) TIME, t (2ms/div) Figure 11. Typical Start-up Using On/Off Voltage (Io = Io,max, Vin=12V,Cext= 22uF). June 19, 2014 65 AO OUTPUT CURRENT, VO (V) (10mV/div) OUTPUT VOLTAGE Figure 7. Converter Efficiency versus Output Current. 55 Figure 12. 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 2A PicoTLynxTM: 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 APXS002A0X-SRZ (1.8V, 2A) at 25oC. 2.5 95 2.0 90 Vin=12V Vin=3V OUTPUT CURRENT, Io (A) EFFICIENCY, (%) NC 85 Vin=14V 80 75 1.5 1.0 Standard Test 0.5 Extended Test 0.0 70 0 0.4 0.8 1.2 1.6 45 2 55 OUTPUT CURRENT, IO (A) VO (V) (100mV/div) OUTPUT VOLTAGE INPUT VOLTAGE VIN (V) (5V/div) VO(V) (500mV/div) VON/OFF (V) (5V/div) 105 TIME, t (20s /div) OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE VO (V) (500mV/div) June 19, 2014 95 Figure 16. Transient Response to Dynamic Load Change from 0% to 50% to 0%. TIME, t (2ms/div) Figure 17. Typical Start-up Using On/Off Voltage (Io = Io,max, Vin=12V,Cext= 22uF,). 85 IO (A) (1Adiv) TIME, t (1s/div) Figure 15. Typical output ripple and noise (VIN = 12V, Io = Io,max). 75 Figure 14. Derating Output Current versus Ambient Temperature and Airflow. OUTPUT CURRENT, VO (V) (10mV/div) OUTPUT VOLTAGE Figure 13. Converter Efficiency versus Output Current. 65 AMBIENT TEMPERATURE, TA OC TIME, t (2ms/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 8 GE Data Sheet 2A PicoTLynxTM: 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 APXS002A0X-SRZ (2.5V, 2A) at 25oC. 100 2.5 95 2.0 NC OUTPUT CURRENT, Io (A) EFFICIENCY, (%) Vin=12V 90 Vin=3.3V 85 Vin=14V 80 75 70 0 0.4 0.8 1.2 1.6 1.5 1.0 Standard Test 0.5 Extended Test 0.0 45 2 55 OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, T 105 C OUTPUT VOLTAGE VO (V) (100mV/div) IO (A) (1Adiv) TIME, t (20s /div) INPUT VOLTAGE VIN (V) (5V/div) VO (V) (1V/div) VON/PFF (V) (5V/div) VO (V) (1V/div) 95 Figure 22. Transient Response to Dynamic Load Change from 0% to 50% to 0%. OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE 85 Figure 20. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (1s/div) Figure 21. Typical output ripple and noise (VIN = 12V, Io = Io,max). TIME, t (2ms/div) TIME, t (2ms/div) Figure 23. Typical Start-up Using On/Off Voltage (Io = Io,max, Vin=12V,Cext= 22uF ). June 19, 2014 75 AO OUTPUT CURRENT, VO (V) (10mV/div) OUTPUT VOLTAGE Figure 19. Converter Efficiency versus Output Current. 65 Figure 24. Typical Start-up Using Input Voltage (VIN = 12V, Cext= 22 uF, Io = Io,max). (c)2014 General Electric Company. All rights reserved. Page 9 GE Data Sheet 2A PicoTLynxTM: 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 APXS002A0X-SRZ (3.3V, 2A) at 25oC. 2.5 100 95 2.0 90 OUTPUT CURRENT, Io (A) Vin=12V EFFICIENCY, (%) NC Vin=4.5V 85 Vin=14V 80 75 70 0 0.4 0.8 1.2 1.6 1.5 1.0 Standard Test 0.5 Extended Test 0.0 45 2 55 OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, T 105 C OUTPUT VOLTAGE VO (V) (100mV/div) IO (A) (1Adiv) TIME, t (20s /div) INPUT VOLTAGE VIN (V) (5V/div) VO (V) (1V/div) VON?OFF (V) (5V/div) VO (V) (1V/div) 95 Figure 28. Transient Response to Dynamic Load Change from 0% to 50% to 0%. OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE 85 Figure 26. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (1s/div) Figure 27. Typical output ripple and noise (VIN = 12V, Io = Io,max). TIME, t (2ms/div) TIME, t (2ms/div) Figure 29. Typical Start-up Using On/Off Voltage (Io = Io,max, Vin=12V,Cext= 22uF) June 19, 2014 75 AO OUTPUT CURRENT, VO (V) (10mV/div) OUTPUT VOLTAGE Figure 25. Converter Efficiency versus Output Current. 65 Figure 30. Typical Start-up Using Input Voltage (VIN = 12V, Cext= 22 uF, Io = Io,max). (c)2014 General Electric Company. All rights reserved. Page 10 GE Data Sheet 2A PicoTLynxTM: 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 APXS002A0X-SRZ (5V, 2A) at 25oC. 2.5 100 2.0 Vin=12V 90 Vin=14V 85 OUTPUT CURRENT, Io (A) EFFICIENCY, (%) 95 NC Vin=6.5V 80 75 1.5 1.0 Standard Test 0.5 Extended Test 0.0 70 0 0.4 0.8 1.2 1.6 45 2 55 OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, T C OUTPUT VOLTAGE VO (V) (100mV/div) OUTPUT CURRENT, TIME, t (20s /div) INPUT VOLTAGE VIN (V) (5V/div) OUTPUT VOLTAGE Vo (V) (2V/div) VON/OFF (V) (5V/div) VO (V) (2V/div) OUTPUT VOLTAG E ON/OFF VOLTAGE June 19, 2014 95 Figure 34. Transient Response to Dynamic Load Change from 0% to 50% to 0%. TIME, t (2ms/div) Figure 35. Typical Start-up Using On/Off Voltage (Io = Io,max, Vin=12V,Cext= 22uF). 85 Figure 32. Derating Output Current versus Ambient Temperature and Airflow. TIME, t (1s/div) Figure 33. Typical output ripple and noise (VIN = 12V, Io = Io,max). 75 AO IO (A) (1Adiv) VO (V) (10mV/div) OUTPUT VOLTAGE Figure 31. Converter Efficiency versus Output Current. 65 TIME, t (2ms/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 11 105 GE Data Sheet 2A PicoTLynxTM: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Test Configurations Design Considerations Input Filtering CURRENT PROBE TO OSCILLOSCOPE LTEST VIN(+) BATTERY 1H CIN CS 1000F Electrolytic 2x100F Tantalum E.S.R.<0.1 The 12V PicoTLynxTM 2A 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, ceramic capacitors are recommended at the input of the module. Figure 40 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 5V. Figure 41 shows the input ripple voltage for an input of 12V @ 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. 90 COPPER STRIP RESISTIVE LOAD Vo+ 10uF 0.1uF COM SCOPE USING BNC SOCKET 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 38. Output Ripple and Noise Test Setup. Rdistribution Rcontact Rcontact VIN(+) Input Ripple Voltage (mVp-p) Figure 37. Input Reflected Ripple Current Test Setup. 80 70 1x10uF 60 1x22uF 50 40 30 20 0.5 1 1.5 2 2.5 3 3.5 Output Voltage (Vdc) Figure 40. Input ripple voltage for various output voltages with 1x10 F or 1x22 F ceramic capacitors at the input (2A load). Input voltage is 5V. Rdistribution 110 VO 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 39. Output Voltage and Efficiency Test Setup. Input Ripple Voltage (mVp-p) 100 90 80 1x10uF 70 1x22uF 60 50 40 30 20 0.5 VO. IO Efficiency = VIN. IIN x 100 % 1 1.5 2 2.5 3 3.5 4 4.5 5 Output Voltage (Vdc) Figure 41. Input ripple voltage for various output voltages with 1x10 F or 1x22 F ceramic capacitors at the input (2A load). Input voltage is 12V. Output Filtering The 12V PicoTLynxTM 2A modules are designed for low output ripple voltage and will meet the maximum output ripple specification with 0.1 F ceramic and 22F ceramic capacitors at the output of the module. However, June 19, 2014 (c)2014 General Electric Company. All rights reserved. Page 12 GE Data Sheet 2A PicoTLynxTM: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current 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 polymer and ceramic capacitors are recommended to improve the dynamic response of the module. A minimum 22uF External Cap must be used. Figure 42 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. Feature Descriptions Remote Enable The 12V PicoTLynxTM 2A power modules feature an On/Off pin for remote On/Off operation. With the Negative Logic On/Off option, (no device code suffix, see Ordering Information), the module turns OFF during logic High and ON during logic Low. The On/Off signal is always referenced to ground. Leaving the On/Off pin disconnected will turn the module ON when input voltage is present. The circuit configuration is shown in Fig. 43. VIN+ MODULE Rpullup 14 12 PWM Enable I ON/OFF Ripple(mVp-p) 10 ON/OFF 8 6 + VON/OFF 10K 10K Q1 4 1x22uF External Cap 1x47uF External Cap 2x47uF External cap 2 0 0.5 1.5 2.5 3.5 Output Voltage(Volts) 4.5 Figure 42. Output ripple voltage for various output voltages with external 1x22 F, 1x47 F or 2x47 F ceramic capacitors at the output (2A load). Input voltage is 12V. 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, CSA C22.2 No. 60950-1, and DIN EN 60950-1 (VDE 0805 Teil 1):200611 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. The input to these units is to be provided with a fast-acting fuse with a maximum rating of 4A in the positive input lead. GND Q2 _ Figure 43. Circuit configuration for using negative On/Off 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. Overtemperature Protection To provide protection in a fault condition, the unit is equipped with a thermal shutdown circuit. The unit will shutdown if the overtemperature threshold of 140oC 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. June 19, 2014 (c)2014 General Electric Company. All rights reserved. Page 13 GE Data Sheet 2A PicoTLynxTM: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Output Voltage Programming The output voltage of the 12V PicoTLynxTM 2A modules 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. 44. The Lower Limit curve shows that for output voltages of 2.4V and higher, the input voltage needs to be larger than the minimum of 3V. regulating the voltage at the SENSE pin. The voltage between the SENSE pin and VOUT pin must not exceed 0.5V. Note that the output voltage of the module cannot exceed the specified maximum value. This includes the voltage drop between the SENSE and Vout pins. When the Remote Sense feature is not being used, connect the SENSE pin to the VOUT pin. VIN(+) VO (+) SENSE 16 ON/OFF Input Voltage (v) 14 LOAD TRIM 12 10 R tri m 8 GND 6 4 Figure 45. Circuit configuration for programming output voltage using an external resistor. 2 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 Output Voltage (V) Figure 44. 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: 6.0 Rtrim = k (Vo - 0.6 ) Voltage Margining Output voltage margining can be implemented in the 12V PicoTLynxTM 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 46 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 GE Critical Power technical representative for additional details. Vo Rtrim is the external resistor in k Rmargin-down Vo is the desired output voltage. Table 1 provides Rtrim values required for some common output voltages. MODULE Q2 Table 1 VO, set (V) 1.0 1.2 1.5 1.8 2.5 3.3 5.0 Trim Rtrim (K) 15 10 6.67 5 3.16 2.22 1.36 Rmargin-up Rtrim Q1 GND Figure 46. Circuit Configuration for margining Output voltage. By using a 0.5% tolerance trim resistor with a TC of 100ppm, a set point tolerance of 1.5% can be achieved as specified in the electrical specification. Remote Sense The 12V PicoTLynxTM 2A power modules have a Remote Sense feature to minimize the effects of distribution losses by June 19, 2014 (c)2014 General Electric Company. All rights reserved. Page 14 GE Data Sheet 2A PicoTLynxTM: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Monotonic Start-up and Shutdown The 12V PicoTLynxTM 2A modules have monotonic start-up and shutdown behavior for any combination of rated input voltage, output current and operating temperature range. Startup into Pre-biased Output The 12V PicoTLynxTM 2A modules can start into a prebiased output as long as the prebias voltage is 0.5V less than the set output voltage. Power Good The 12V PicoTLynxTM 2A modules provide a Power Good (PGOOD) signal that is implemented with an open-drain output to indicate that the output voltage is within the regulation limits of the power module. The PGOOD signal will be de-asserted to a low state if any condition such as overtemperature, overcurrent or loss of regulation occurs that would result in the output voltage going 12.5% outside the setpoint value. The PGOOD terminal should be connected through a pullup resistor (suggested value 100K) to a source of 5VDC or lower. Tunable LoopTM The 12V PicoTLynxTM 2A modules have a new feature that optimizes transient response of the module called Tunable LoopTM. External capacitors are usually added to the output of the module for two reasons: to reduce output ripple and noise (see Fig. 52) and to reduce output voltage deviations from the steady-state value in the presence of dynamic load current changes. 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. The Tunable LoopTM allows the user to externally adjust the voltage control loop to match the filter network connected to the output of the module. The Tunable LoopTM is implemented by connecting a series R-C between the SENSE and TRIM pins of the module, as shown in Fig. 47. This R-C allows the user to externally adjust the voltage loop feedback compensation of the module. VOUT SENSE In applications with tight output voltage limits in the presence of dynamic current loading, additional output capacitance will be required. Tables 3, 4 and 5 list 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), for input voltages of 12V, 5V and 3.3V respectively. Please contact your GE Critical 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 or input voltages other than 12V. Table 2. General recommended values of of RTUNE and CTUNE for Vin=12V/5V/3.3V and various external ceramic capacitor combinations. Co 1x47F 2x47F 3x47F 4x47F RTUNE 220 150 100 100 100 CTUNE 3900pF 10nF 18nF 18nF 22nF Table 3. Recommended values of RTUNE and CTUNE to obtain transient deviation of 2% of Vout for a 1A step load with Vin=12V Vo 5V 3.3V 2.5V 1.8V 1.2V 0.6V Co 1x22F1x47F 2x47F 2x47F 3x47F 330F Polymer RTUNE 220 220 150 150 100 100 CTUNE 2200pF3900pF 10nF 10nF 18nF 68nF V 81mV 61mV 35mV 34mV 23mV 12mV Vo MODULE 10x47F Table 4. Recommended values of RTUNE and CTUNE to obtain transient deviation of 2% of Vout for a 1A step load with Vin=5V RTUNE CO CTUNE TRIM GND Recommended values of RTUNE and CTUNE for different output capacitor combinations are given in Tables 2 and 3. Table 2 shows the recommended values of RTUNE and CTUNE for different values of ceramic output capacitors up to 470uF that might be needed for an application to meet output ripple and noise requirements. Selecting RTUNE and CTUNE according to Table 2 will ensure stable operation of the module. RTrim Co 3.3V 2.5V 1.8V 1.2V 0.6V 1x47F 2x47F 2x47F 3x47F 330F Polymer RTUNE 220 150 CTUNE 3900pF 10nF 62mV 35mV V 150 10nF 34mV 100 18nF 23mV 100 68nF 12mV Figure. 47. Circuit diagram showing connection of RTUME and CTUNE to tune the control loop of the module. June 19, 2014 (c)2014 General Electric Company. All rights reserved. Page 15 GE Data Sheet 2A PicoTLynxTM: 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 June 19, 2014 (c)2014 General Electric Company. All rights reserved. Page 16 GE Data Sheet 2A PicoTLynxTM: 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 always 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 48. The preferred airflow direction for the module is in Figure 49. Figure 49. Preferred airflow direction and location of hot-spot of the module (Tref). 25.4_ (1.0) Wind Tunnel PWBs Power Module 76.2_ (3.0) x 12.7_ (0.50) Probe Location for measuring airflow and ambient temperature Air flow Figure 48. Thermal Test Setup. The thermal reference points, Tref used in the specifications are also shown in Figure 13. For reliable operation the temperatures at these points should not exceed 140oC. 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. June 19, 2014 (c)2014 General Electric Company. All rights reserved. Page 17 GE Data Sheet 2A PicoTLynxTM: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Shock and Vibration The ruggedized (-D version) of the modules are designed to withstand elevated levels of shock and vibration to be able to operate in harsh environments. The ruggedized modules have been successfully tested to the following conditions: Non operating random vibration: Random vibration tests conducted at 25C, 10 to 2000Hz, for 30 minutes each level, starting from 30Grms (Z axis) and up to 50Grms (Z axis). The units were then subjected to two more tests of 50Grms at 30 minutes each for a total of 90 minutes. Operating shock to 40G per Mil Std. 810F, Method 516.4 Procedure I: The modules were tested in opposing directions along each of three orthogonal axes, with waveform and amplitude of the shock impulse characteristics as follows: All shocks were half sine pulses, 11 milliseconds (ms) in duration in all 3 axes. Units were tested to the Functional Shock Test of MIL-STD-810, Method 516.4, Procedure I - Figure 516.4-4. A shock magnitude of 40G was utilized. The operational units were subjected to three shocks in each direction along three axes for a total of eighteen shocks. Operating vibration per Mil Std 810F, Method 514.5 Procedure I: The ruggedized (-D version) modules are designed and tested to vibration levels as outlined in MIL-STD-810F, Method 514.5, and Procedure 1, using the Power Spectral Density (PSD) profiles as shown in Table 6 and Table 7 for all axes. Full compliance with performance specifications was required during the performance test. No damage was allowed to the module and full compliance to performance specifications was required when the endurance environment was removed. The module was tested per MIL-STD810, Method 514.5, Procedure I, for functional (performance) and endurance random vibration using the performance and endurance levels shown in Table 6 and Table 7 for all axes. The performance test has been split, with one half accomplished before the endurance test and one half after the endurance test (in each axis). The duration of the performance test was at least 16 minutes total per axis and at least 120 minutes total per axis for the endurance test. The endurance test period was 2 hours minimum per axis. Frequency (Hz) 10 30 40 50 90 110 130 140 Frequency (Hz) 10 30 40 50 90 110 130 140 June 19, 2014 Table 6: Performance Vibration Qualification - All Axes PSD Level PSD Level Frequency (Hz) Frequency (Hz) (G2/Hz) (G2/Hz) 1.14E-03 170 2.54E-03 690 5.96E-03 230 3.70E-03 800 9.53E-04 290 7.99E-04 890 2.08E-03 340 1.12E-02 1070 2.08E-03 370 1.12E-02 1240 7.05E-04 430 8.84E-04 1550 5.00E-03 490 1.54E-03 1780 8.20E-04 560 5.62E-04 2000 PSD Level (G2/Hz) 1.03E-03 7.29E-03 1.00E-03 2.67E-03 1.08E-03 2.54E-03 2.88E-03 5.62E-04 Table 7: Endurance Vibration Qualification - All Axes PSD Level PSD Level Frequency (Hz) Frequency (Hz) (G2/Hz) (G2/Hz) 0.00803 170 0.01795 690 0.04216 230 0.02616 800 0.00674 290 0.00565 890 0.01468 340 0.07901 1070 0.01468 370 0.07901 1240 0.00498 430 0.00625 1550 0.03536 490 0.01086 1780 0.0058 560 0.00398 2000 PSD Level (G2/Hz) 0.00727 0.05155 0.00709 0.01887 0.00764 0.01795 0.02035 0.00398 (c)2014 General Electric Company. All rights reserved. Page 18 GE Data Sheet 2A PicoTLynxTM: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Example Application Circuit Requirements: Vin: Vout: 12V 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) Vin+ VIN Vout+ VOUT SENSE RTUNE + CI2 MODULE CI1 CTUNE Q3 ON/OFF TRIM GND CI1 1x10F/16V ceramic capacitor (e.g. TDK C Series) CI2 100F/16V bulk electrolytic RTrim CO1 2x47F/6.3V ceramic capacitor (e.g. TDK C Series, Murata GRM32ER60J476ME20) CTune 5600pF ceramic capacitor (can be 1206, 0805 or 0603 size) RTune 150 ohms SMT resistor (can be 1206, 0805 or 0603 size) RTrim 5k SMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%) June 19, 2014 CO1 (c)2014 General Electric Company. All rights reserved. Page 19 GE Data Sheet 2A PicoTLynxTM: 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.) NC PIN 7 June 19, 2014 PIN 8 PIN FUNCTION 1 ON/OFF 2 VIN 3 GND 4 VOUT 5 SENSE 6 TRIM 7 GND 8 NC 9 NC 10 PGOOD (c)2014 General Electric Company. All rights reserved. Page 20 GE Data Sheet 2A PicoTLynxTM: 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.) June 19, 2014 PIN FUNCTION 1 ON/OFF 2 VIN 3 GND 4 VOUT 5 SENSE 6 TRIM 7 GND 8 NC 9 NC 10 PGOOD (c)2014 General Electric Company. All rights reserved. Page 21 GE Data Sheet 2A PicoTLynxTM: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Packaging Details The 12V PicoTLynxTM 2A modules are supplied in tape & reel as standard. Modules are shipped in quantities of 400 modules per reel. All Dimensions are in millimeters and (in inches). Reel Dimensions: Outside Dimensions: 330.2 mm (13.00) Inside Dimensions: 177.8 mm (7.00") Tape Width: 24.00 mm (0.945") June 19, 2014 (c)2014 General Electric Company. All rights reserved. Page 22 GE Data Sheet 2A PicoTLynxTM: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current MSL Rating Surface Mount Information The 12V PicoTLynxTM 2A modules have a MSL rating of 2a. Pick and Place The 12V PicoTLynxTM 2A modules use an open frame construction and are designed for a fully automated assembly process. The modules are fitted with a label designed to provide a large surface area for pick and place operations. The label meets all the requirements for surface mount processing, as well as safety standards, and is able to withstand reflow temperatures of up to 300oC. The label also carries product information such as product code, serial number and the location of manufacture. Nozzle Recommendations The module weight has been kept to a minimum by using open frame construction. Variables such as nozzle size, tip style, vacuum pressure and placement speed should be considered to optimize this process. The minimum recommended inside nozzle diameter for reliable operation is 3mm. The maximum nozzle outer diameter, which will safely fit within the allowable component spacing, is 7 mm. Storage and Handling The recommended storage environment and handling procedures for moisture-sensitive surface mount packages is detailed in J-STD-033 Rev. A (Handling, Packing, Shipping and Use of Moisture/Reflow Sensitive Surface Mount Devices). Moisture barrier bags (MBB) with desiccant are required for MSL ratings of 2 or greater. These sealed packages should not be broken until time of use. Once the original package is broken, the floor life of the product at conditions of 30C and 60% relative humidity varies according to the MSL rating (see J-STD-033A). The shelf life for dry packed SMT packages will be a minimum of 12 months from the bag seal date, when stored at the following conditions: < 40 C, < 90% relative humidity. 300 Per J-STD-020 Rev. C Peak Temp 260C 250 This module is not recommended for assembly on the bottom side of a customer board. If such an assembly is attempted, components may fall off the module during the second reflow process. If assembly on the bottom side is planned, please contact GE Critical Power for special manufacturing process instructions. Only ruggedized (-D version) modules with additional epoxy will work with a customer's first side assembly. For other versions, first side assembly should be avoided Lead Free Soldering The 12V PicoTLynxTM 2A modules are lead-free (Pb-free) and RoHS compliant and fully compatible in a Pb-free soldering process. Failure to observe the instructions below may result in the failure of or cause damage to the modules and can adversely affect long-term reliability. Pb-free Reflow Profile Power Systems will comply with J-STD-020 Rev. C (Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices) for both Pb-free solder profiles and MSL classification procedures. This standard provides a recommended forced-airconvection reflow profile based on the volume and thickness of the package (table 4-2). The suggested Pbfree solder paste is Sn/Ag/Cu (SAC). A 6 mil thick stencil is Reflow Temp (C) Bottom Side / First Side Assembly 200 150 * Min. Time Above 235C 15 Seconds Heating Zone 1C/Second Cooling Zone *Time Above 217C 60 Seconds 100 50 0 Reflow Time (Seconds) Figure 50. Recommended linear reflow profile using Sn/Ag/Cu solder. Post Solder Cleaning and Drying Considerations 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 (AN04-001). recommended. For questions regarding Land grid array(LGA) soldering, solder volume; please contact GE Critical Power for special manufacturing process instructions. The recommended linear reflow profile using Sn/Ag/Cu solder is shown in Fig. 50. Soldering outside of the recommended profile requires testing to verify results and performance. June 19, 2014 (c)2014 General Electric Company. All rights reserved. Page 23 GE Data Sheet 2A PicoTLynxTM: Non-Isolated DC-DC Power Modules 3Vdc -14Vdc input; 0.6Vdc to 5.5Vdc output; 2A Output Current Ordering Information Please contact your GE Critical Power Sales Representative for pricing, availability and optional features. Table 8. Device Codes Device Code Input Voltage Range Output Voltage Output Current On/Off Logic Sequencing Comcodes APXS002A0X-SRZ 3 - 14Vdc 0.6 - 5.5Vdc 2A Negative No CC109150406 APXS002A0X-SRDZ 3 - 14Vdc 0.6 - 5.5Vdc 2A Negative No CC109158812 * Special codes, consult factory before ordering Table 9. Coding Scheme TLynx family Sequencing feature. Input voltage range Output current Output voltage AP X S 002A0 X X = w/o Seq. S = 3 - 14V 2.0A On/Off logic X= 4 = positive programmable No entry = output negative Options ROHS Compliance -SR -D Z S = Surface Mount R = Tape&Reel D = 105C operating ambient, 40G operating shock as per MIL Std 810F Z = ROHS6 4 = positive Contact Us For more information, call us at USA/Canada: +1 888 546 3243, or +1 972 244 9288 Asia-Pacific: +86.021.54279977*808 Europe, Middle-East and Africa: +49.89.878067-280 India: +91.80.28411633 www.gecriticalpower.com 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. June 19, 2014 (c)2014 General Electric Company. All International rights reserved. Version 1.14