GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current Features EZ-SEQUENCETM RoHS Compliant Applications Compliant to RoHS EU Directive 2002/95/EC (Z versions) Compatible in a Pb-free or SnPb reflow environment (Z versions) Wide Input voltage range (2.4Vdc-5.5Vdc) Output voltage programmable from 0.6Vdc to 3.63 Vdc via external resistor Tunable LoopTM to optimize dynamic output voltage response Flexible output voltage sequencing EZ-SEQUENCE - APTH versions Remote sense Fixed switching frequency Distributed power architectures Output overcurrent protection (non-latching) Intermediate bus voltage applications Overtemperature protection Telecommunications equipment Remote On/Off Servers and storage applications Ability to sink and source current Networking equipment Cost efficient open frame design Industrial equipment Small size: 12.2 mm x 12.2 mm x 6.25 mm (0.48 in x 0.48 in x 0.25 in) Vin+ VIN Vout+ VOUT SENSE MODULE CTUNE Q1 ON/OFF Wide operating temperature range (-40C to 85C) 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 RTUNE SEQ Cin Co TRIM GND RTrim Description The Pico TLynxTM 3A power modules are non-isolated dc-dc converters that can deliver up to 3A of output current. These modules operate over a wide range of input voltage (VIN = 2.4Vdc-5.5Vdc) and provide a precisely regulated output voltage from 0.6Vdc to 3.63Vdc, programmable via an external resistor. Features include remote On/Off, adjustable output voltage, over current and overtemperature protection, and output voltage sequencing (APTH versions). 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 November 22, 2019 (c)2013 General Electric Company. All rights reserved. GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A 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 6 Vdc APTH VSEQ -0.3 ViN, Max Vdc All TA -40 85 C All Tstg -55 125 C Continuous Sequencing Voltage 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 2.4 5.5 Vdc 3.5 Adc Operating Input Voltage All VIN Maximum Input Current All IIN,max Unit (VIN=2.4V to 5.5V, IO=IO, max ) Input No Load Current VO,set = 0.6 Vdc IIN,No load 26 mA VO,set = 3.3Vdc IIN,No load 75 mA All IIN,stand-by 2.1 mA Inrush Transient All I2t Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1H source impedance; VIN =0 to 5.5V, IO= IOmax ; See Test Configurations) All 25 mAp-p Input Ripple Rejection (120Hz) All 40 dB (VIN = 5.0Vdc, IO = 0, module enabled) Input Stand-by Current (VIN = 5.0Vdc, module disabled) 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 5A (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. November 22, 2019 (c)2013 General Electric Company. All rights reserved. Page 2 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A 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 3.63 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 0.5 V Output Regulation (for VO < 2.5Vdc) Remote Sense Range All 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) All RMS External Capacitance 20 35 mVpk-pk 15 25 mVrms 1 Without the Tunable LoopTM All CO, max 0 47 F ESR 0.15 m All CO, max 0 1000 F ESR 10 m All CO, max 0 3000 F Output Current All Io 0 3 Adc Output Current Limit Inception (Hiccup Mode ) All IO, lim 200 % Io,max Output Short-Circuit Current All IO, s/c 0.12 Adc % ESR 1 m With the Tunable LoopTM (VO250mV) ( Hiccup Mode ) Efficiency VO,set = 0.6Vdc 81.2 VIN= 3.3Vdc, TA=25C VO, set = 1.2Vdc 89.4 % IO=IO, max , VO= VO,set VO,set = 1.8Vdc 91.4 % VO,set = 2.5Vdc 93.9 % VO,set = 3.3Vdc 94.4 All fsw All All Vpk ts 90 20 mV s Peak Deviation All Vpk 100 mV Settling Time (Vo<10% peak deviation) All ts 20 s VIN= 5Vdc Switching Frequency 600 % kHz Dynamic Load Response (dIo/dt=10A/s; VIN = 5V; Vout = 1.5V, TA=25C) Load Change from Io= 0% to 50% of Io,max; Co = 0 Peak Deviation Settling Time (Vo<10% peak deviation) Load Change from Io= 50% to 0% of Io,max: , Co = 0 1 External capacitors may require using the new Tunable LoopTM feature to ensure that the module is stable as well as getting the best transient response. See the Tunable LoopTM section for details. November 22, 2019 (c)2013 General Electric Company. All rights reserved. Page 3 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current General Specifications Parameter Calculated MTBF (IO=0.8IO, max, TA=40C) Telcordia Issue 2 Method 1 Case 3 Weight Min Typ Max Unit 16,139,760 Hours 1.55 (0.0546) 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 Units Input High Current All IIH -- -- 1 mA Input High Voltage All VIH VIN - 1.6 -- VIN, max Vdc 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) Logic Low (Module ON) Input low Current All IIL -- -- 0.2 mA Input Low Voltage All VIL -0.2 -- VIN - 1.6 Vdc All Tdelay -- 2 -- msec All Tdelay -- 2 -- msec All Trise -- 5 -- 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 APTH TsEQ-delay (Power-Up: 2V/ms) APTH VSEQ -Vo 100 mV (Power-Down: 2V/ms) APTH VSEQ -Vo 100 mV (See Thermal Considerations section) Sequencing Delay time Delay from VIN, min to application of voltage on SEQ pin Tracking Accuracy 10 msec (VIN, min to VIN, max; IO, min to IO, max VSEQ < Vo) November 22, 2019 (c)2013 General Electric Company. All rights reserved. Page 4 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current Feature Specifications (cont.) Parameter Device Symbol Min Typ Max Units 2.2 Vdc Input Undervoltage Lockout Turn-on Threshold All Turn-off Threshold All 1.75 Hysteresis All 0.08 November 22, 2019 (c)2013 General Electric Company. All rights reserved. Vdc 0.2 Vdc Page 5 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current Characteristic Curves 86 3.5 84 3 82 2.5 OUTPUT CURRENT, Io (A) EFFICIENCY, (%) The following figures provide typical characteristics for the Pico TLynxTM 3A modules at 0.6Vo and at 25oC. 80 Vin=3.3V 78 Vin=2.4V Vin=5.5V 76 74 72 70 0 0.5 1 1.5 2 2.5 2 1.5 1 0.5 0 LFM 0 20 3 OUTPUT CURRENT, IO (A) November 22, 2019 80 90 VO (V) (100mV/div) IO (A) (1Adiv) OUTPUT CURRENT, OUTPUT VOLTAGE Figure 5. Typical Start-up Using On/Off Voltage (Io = Io,max). 70 Figure 4. Transient Response to Dynamic Load Change from 0% to 50% to 0% with VIN=5V. VO (V) (200mV/div) VO (V) (200mV/div) VON/OFF (V) (2V/div) TIME, t (1ms/div) 60 TIME, t (20s /div) OUTPUT VOLTAGE OUTPUT VOLTAGE ON/OFF VOLTAGE Figure 3. Typical output ripple and noise (VIN = 5V, Io = Io,max). 50 Figure 2. Derating Output Current versus Ambient Temperature and Airflow. VIN (V) (2V/div) TIME, t (1s/div) 40 AMBIENT TEMPERATURE, TA OC INPUT VOLTAGE VO (V) (20mV/div) OUTPUT VOLTAGE Figure 1. Converter Efficiency versus Output Current. 30 TIME, t (1ms/div) Figure 6. Typical Start-up Using Input Voltage (VIN = 5V, Io = Io,max). (c)2013 General Electric Company. All rights reserved. Page 6 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current Characteristic Curves (continued) The following figures provide typical characteristics for the Pico TLynxTM 3A modules at 1.2Vo and at 25oC. 95 3.5 3 85 Vin=5.5V Vin=3.3V 80 OUTPUT CURRENT, Io (A) EFFICIENCY, (%) 90 Vin=2.4V 75 70 0 0.5 1 1.5 2 2.5 2.5 2 1.5 1 0.5 0 LFM 0 20 3 OUTPUT CURRENT, IO (A) November 22, 2019 80 VO (V) (100mV/div) IO (A) (1Adiv) OUTPUT CURRENT, OUTPUT VOLTAGE Figure 11. Typical Start-up Using On/Off Voltage (Io = Io,max). 70 Figure 10. Transient Response to Dynamic Load Change from 0% to 50% to 0% with VIN=5V. VO (V) (500mV/div) VO (V) (500mV/div) VON/OFF (V) (2V/div) TIME, t (1ms/div) 60 TIME, t (20s /div) OUTPUT VOLTAGE OUTPUT VOLTAGE ON/OFF VOLTAGE Figure 9. Typical output ripple and noise (VIN = 5V, Io = Io,max). 50 Figure 8. Derating Output Current versus Ambient Temperature and Airflow. VIN (V) (2V/div) TIME, t (1s/div) 40 AMBIENT TEMPERATURE, TA OC INPUT VOLTAGE VO (V) (20mV/div) OUTPUT VOLTAGE Figure 7. Converter Efficiency versus Output Current. 30 TIME, t (1ms/div) Figure 12. Typical Start-up Using Input Voltage (VIN = 5V, Io = Io,max). (c)2013 General Electric Company. All rights reserved. Page 7 90 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current Characteristic Curves (continued) The following figures provide typical characteristics for the Pico TLynxTM 3A modules at 1.8Vo and at 25oC. 3.5 95 3 Vin=3.3V 85 OUTPUT CURRENT, Io (A) EFFICIENCY, (%) 90 Vin=5.5V Vin=2.4V 80 75 70 0 0.5 1 1.5 2 2.5 2.5 2 1.5 1 0.5 0 LFM 0 20 3 OUTPUT CURRENT, IO (A) November 22, 2019 80 90 VO (V) (200mV/div) IO (A) (1Adiv) OUTPUT CURRENT, OUTPUT VOLTAGE Figure 17. Typical Start-up Using On/Off Voltage (Io = Io,max). 70 Figure 16. Transient Response to Dynamic Load Change from 0% to 50% to 0% with VIN=5V. VO (V) (1V/div) TIME, t (1ms/div) 60 TIME, t (20s /div) OUTPUT VOLTAGE VO (V) (500mV/div) VON/OFF (V) (2V/div) ON/OFF VOLTAGE OUTPUT VOLTAGE Figure 15. Typical output ripple and noise (VIN = 5V, Io = Io,max). 50 Figure 14. Derating Output Current versus Ambient Temperature and Airflow. VIN (V) (2V/div) TIME, t (1s/div) 40 AMBIENT TEMPERATURE, TA OC INPUT VOLTAGE VO (V) (20mV/div) OUTPUT VOLTAGE Figure 13. Converter Efficiency versus Output Current. 30 TIME, t (1ms/div) Figure 18. Typical Start-up Using Input Voltage (VIN = 5V, Io = Io,max). (c)2013 General Electric Company. All rights reserved. Page 8 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current Characteristic Curves (continued) The following figures provide typical characteristics for the Pico TLynxTM 3A modules at 2.5Vo and at 25oC. 3.5 100 3 OUTPUT CURRENT, Io (A) EFFICIENCY, (%) 95 90 Vin=5.5V Vin=3.3V 85 Vin=3V 80 75 70 0 0.5 1 1.5 2 2.5 2.5 2 1.5 1 0.5 0 LFM 0 20 3 OUTPUT CURRENT, IO (A) November 22, 2019 80 90 VO (V) (200mV/div) IO (A) (1Adiv) OUTPUT CURRENT, OUTPUT VOLTAGE Figure 23. Typical Start-up Using On/Off Voltage (Io = Io,max). 70 Figure 22. Transient Response to Dynamic Load Change from 0% to 50% to 0% with VIN=5V. VO (V) (1V/div) TIME, t (1ms/div) 60 TIME, t (20s /div) OUTPUT VOLTAGE VO (V) (1V/div) VON/OFF (V) (5V/div) ON/OFF VOLTAGE OUTPUT VOLTAGE Figure 21. Typical output ripple and noise (VIN = 5V, Io = Io,max). 50 Figure 20. Derating Output Current versus Ambient Temperature and Airflow. VIN (V) (2V/div) TIME, t (1s/div) 40 AMBIENT TEMPERATURE, TA OC INPUT VOLTAGE VO (V) (20mV/div) OUTPUT VOLTAGE Figure 19. Converter Efficiency versus Output Current. 30 TIME, t (1ms/div) Figure 24. Typical Start-up Using Input Voltage (VIN = 5V, Io = Io,max). (c)2013 General Electric Company. All rights reserved. Page 9 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current Characteristic Curves (continued) The following figures provide typical characteristics for the Pico TLynxTM 3A modules at 3.3Vo and at 25oC. 3.5 100 3 90 OUTPUT CURRENT, Io (A) EFFICIENCY, (%) 95 Vin=5.5V Vin=5V 85 Vin=4V 80 75 70 0 0.5 1 1.5 2 2.5 2.5 2 1.5 1 0.5 0 LFM 0 20 3 OUTPUT CURRENT, IO (A) November 22, 2019 80 90 VO (V) (200mV/div) IO (A) (1Adiv) OUTPUT CURRENT, OUTPUT VOLTAGE Figure 29. Typical Start-up Using On/Off Voltage (Io = Io,max). 70 Figure 28. Transient Response to Dynamic Load Change from 0% 50% to 0% with VIN=5V. VO (V) (1V/div) TIME, t (1ms/div) 60 TIME, t (20s /div) OUTPUT VOLTAGE VO (V) (1V/div) VON/OFF (V) (2V/div) ON/OFF VOLTAGE OUTPUT VOLTAGE Figure 27. Typical output ripple and noise (VIN = 5V, Io = Io,max). 50 Figure 26. Derating Output Current versus Ambient Temperature and Airflow. VIN (V) (2V/div) TIME, t (1s/div) 40 AMBIENT TEMPERATURE, TA OC INPUT VOLTAGE VO (V) (20mV/div) OUTPUT VOLTAGE Figure 25. Converter Efficiency versus Output Current. 30 TIME, t (1ms/div) Figure 30. Typical Start-up Using Input Voltage (VIN = 5V, Io = Io,max). (c)2013 General Electric Company. All rights reserved. Page 10 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current Test Configurations Design Considerations CURRENT PROBE VIN(+) The Pico TLynxTM 3A 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. COM To minimize input voltage ripple, low-ESR ceramic capacitors are recommended at the input of the module. Figure 34 shows the input ripple voltage for various output voltages at 3A of load current with 1x22 F or 2x22 F ceramic capacitors and an input of 5V. Figure 35 shows data for the 3.3Vin case, with 1x22F or 2x22F of ceramic capacitors at the input. LTEST BATTERY 1H CIN CS 1000F Electrolytic 2x100F Tantalum E.S.R.<0.1 @ 20C 100kHz 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. Figure 31. Input Reflected Ripple Current Test Setup. COPPER STRIP RESISTIVE LOAD Vo+ 10uF 0.1uF Input Filtering COM SCOPE USING BNC SOCKET 60 Input Ripple Voltage (mVp-p) TO OSCILLOSCOPE 50 40 30 20 1x22uF 10 2x22uF 0 0.5 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 32. Output Ripple and Noise Test Setup. 1 1.5 2 2.5 3 3.5 Output Voltage (Vdc) Figure 34. Input ripple voltage for various output voltages with 1x22 F or 2x22 F ceramic capacitors at the input (3A load). Input voltage is 5V. 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 33. Output Voltage and Efficiency Test Setup. VO. IO Efficiency = November 22, 2019 VIN. IIN x Input Ripple Voltage (mVp-p) 60 50 40 30 20 1x22uF 10 2x22uF 0 0.5 1 1.5 2 2.5 3 Output Voltage (Vdc) Figure 35. Input ripple voltage in mV, p-p for various output voltages with 1x22 F or 2x22 F ceramic capacitors at the input (3A load). Input voltage is 3.3V. 100 % (c)2013 General Electric Company. All rights reserved. Page 11 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current Output Filtering 20 TLynxTM 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 capacitors are recommended to improve the dynamic response of the module. Figure 36 provides output ripple information for different external capacitance values at various Vo and for load currents of 3A while maintaining an input voltage of 5V. Fig 37 shows the performance with a 3.3V input. 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 Loop feature described later in this data sheet. 30 15 Ripple(mVp-p) The Pico 3A modules are designed for low output ripple voltage and will meet the maximum output ripple specification with 0.1 F ceramic and 10 F ceramic capacitors at the output of the module. 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. 1x10uF External Cap 1x47uF External cap 2x47uF External Cap 4x47uF external Cap 10 5 0 0.5 1 1.5 2 Output Voltage(Volts) 2.5 3 Figure 37. Output ripple voltage for various output voltages with external 1x10 F, 1x47 F, 2x47 F or 4x47 F ceramic capacitors at the output (3A load). Input voltage is 3.3V. 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. 60950-1-03, and VDE 0850:2001-12 (EN60950-1) Licensed. Ripple(mVp-p) 25 20 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. 1x10uF External Cap 1x47uF External cap 2x47uF External Cap 4x47uF external Cap 15 10 The input to these units is to be provided with a fast-acting fuse with a maximum rating of 5A in the positive input lead. 5 Feature Descriptions 0 0.5 1 1.5 2 2.5 Output Voltage(Volts) 3 3.5 Figure 36. Output ripple voltage for various output voltages with external 1x10 F, 1x47 F, 2x47 F or 4x47 F ceramic capacitors at the output (3A load). Input voltage is 5V. Remote On/Off The Pico TLynxTM 3A modules feature an On/Off pin for remote On/Off operation. With Negative Logic operation, (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. For either On/Off logic option, leaving the On/Off pin disconnected will turn the module ON when input voltage is present. The negative logic On/Off circuit configuration is shown in Fig. 38. The On/Off pin should be pulled high with an external pull-up resistor (suggested value for the 2.4V to 5.5Vin range is 3.6Kohms). When transistor Q1 is in the OFF state, the On/Off pin is pulled high and the module is OFF. The On/Off threshold for logic High on the On/Off pin depends on the input voltage and its minimum value is VIN - 1.6V. To turn the module ON, Q1 is turned ON pulling the On/Off pin low. November 22, 2019 (c)2013 General Electric Company. All rights reserved. Page 12 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current 6 VIN+ MODULE 100K I ON/OFF ON/OFF 2.05K + VON/OFF Q1 PWM Enable Input Voltage (v) Rpullup 5 Upper Limit 4 3 Lower Limit 2 1 0 20K 0.5 GND 1 1.5 2 2.5 3 3.5 4 Output Voltage (V) _ Figure 38. 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. Figure 39. 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: 1.2 Rtrim k Vo 0.6 Rtrim is the external resistor in k Overtemperature Protection Vo is the desired output voltage. 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. Table 1 provides Rtrim values required for some common output voltages. Table 1 VO, set (V) Rtrim (K) 0.6 1.0 1.2 1.5 1.8 2.5 3.3 Open 3.0 2.0 1.333 1.0 0.632 0.444 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 Pico TLynxTM 3A modules can be programmed to any voltage from 0.6Vdc to 3.63Vdc 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. 39. The Upper Limit curve shows that the entire output voltage range is available with the maximum input voltage of 5.5V. The Lower Limit curve shows that for output voltages of 1.8V and higher, the input voltage needs to be larger than the minimum of 2.4V. November 22, 2019 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. (c)2013 General Electric Company. All rights reserved. Page 13 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current Monotonic Start-up and Shutdown VIN + VO+ The Pico TLynxTM 3A modules have monotonic start-up and shutdown behavior for any combination of rated input voltage, output current and operating temperature range. SENSE ON/OFF LOAD TRIM Rtrim GND Startup into Pre-biased Output The 5.5V Pico TLynxTM 3A modules can start into a prebiased output as long as the prebias voltage is 0.5V less than the set output voltage. Note that prebias operation is not supported when output voltage sequencing is used. Output Voltage Sequencing Figure 40. Circuit configuration for programming output voltage using an external resistor. Remote Sense The Pico TLynxTM 3A modules have a Remote Sense feature to minimize the effects of distribution losses by 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. Voltage Margining Output voltage margining can be implemented in the Pico TLynxTM 3A 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 41 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 technical representative for additional details. Vo Rmargin-down The Pico TLynxTM modules include a sequencing feature, EZSEQUENCE that enables users to implement various types of output voltage sequencing in their applications. This is accomplished via an additional sequencing pin. When not using the sequencing feature, either tie the SEQ pin to VIN or leave it unconnected. When an analog voltage is applied to the SEQ pin, the output voltage tracks this voltage until the output reaches the setpoint voltage. The final value of the SEQ voltage must be set higher than the set-point voltage of the module. The output voltage follows the voltage on the SEQ pin on a one-to-one volt basis. By connecting the SEQ pins of multiple modules together, all modules can track their output voltages to the voltage applied on the SEQ pin. For proper voltage sequencing, first, input voltage is applied to the module. The On/Off pin of the module is left unconnected (or tied to GND for negative logic modules) so that the module is ON by default. After applying input voltage to the module, a minimum 10msec delay is required before applying voltage on the SEQ pin. This delay gives the module enough time to complete its internal power-up soft-start cycle. During the delay time, the SEQ pin should be held close to ground (nominally 50mV 20 mV). This is required to keep the internal op-amp out of saturation thus preventing output overshoot during the start of the sequencing ramp. By selecting resistor R1 (see fig. 42) according to the following equation R1 MODULE 24950 ohms, V IN 0.05 the voltage at the sequencing pin will be 50mV when the sequencing signal is at zero. Q2 Trim Rmargin-up Rtrim Q1 GND Figure 41. Circuit Configuration for margining Output voltage November 22, 2019 (c)2013 General Electric Company. All rights reserved. Page 14 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current 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 Loop is implemented by connecting a series R-C between the SENSE and TRIM pins of the module, as shown in Fig. 43. This R-C allows the user to externally adjust the voltage loop feedback compensation of the module. MODULE VIN+ 499K + OUT R1 SEQ 10K VOUT SENSE - RTUNE GND MODULE Figure 42. Circuit showing connection of the sequencing signal to the SEQ pin. After the 10msec delay, an analog voltage is applied to the SEQ pin and the output voltage of the module will track this voltage on a one-to-one volt bases until the output reaches the set-point voltage. To initiate simultaneous shutdown of the modules, the SEQ pin voltage is lowered in a controlled manner. The output voltage of the modules tracks the voltages below their set-point voltages on a one-to-one basis. A valid input voltage must be maintained until the tracking and output voltages reach ground potential. When using the EZ-SEQUENCETM feature to control start-up of the module, pre-bias immunity during start-up is disabled. The pre-bias immunity feature of the module relies on the module being in the diode-mode during start-up. When using the EZ-SEQUENCETM feature, modules goes through an internal set-up time of 10msec, and will be in synchronous rectification mode when the voltage at the SEQ pin is applied. This will result in the module sinking current if a pre-bias voltage is present at the output of the module. When prebias immunity during start-up is required, the EZSEQUENCETM feature must be disabled. For additional guidelines on using the EZ-SEQUENCETM feature please refer to Application Note AN04-008 "Application Guidelines for Non-Isolated Converters: Guidelines for Sequencing of Multiple Modules", or contact the GE technical representative for additional information. Tunable Loop The 5V Pico TLynxTM 3A 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 Figures 36 and 37) 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. November 22, 2019 CO CTUNE TRIM RTrim GND Figure. 43. Circuit diagram showing connection of RTUME and CTUNE to tune the control loop of the module. Recommended values of RTUNE and CTUNE for different output capacitor combinations are given in Tables 2, 3, 4 and 5. Tables 2 and 4 show 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 for 5Vin and 3.3Vin respectively. Selecting RTUNE and CTUNE according to Table 2 will ensure stable operation of the module. In applications with tight output voltage limits in the presence of dynamic current loading, additional output capacitance will be required. Tables 3 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 1.5A to 3A step change (50% of full load), with an input voltage of 5Vin and 3.3Vin respectively Please contact your GE 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 3.3 or 5V. Table 2. General recommended values of of RTUNE and CTUNE for Vin=5V and various external ceramic capacitor combinations. Co 1x47F 2x47F 4x47F 6x47F RTUNE 33 33 33 33 33 CTUNE 6800pF 15nF 33nF 47nF 56nF (c)2013 General Electric Company. All rights reserved. 10x47F Page 15 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current Table 3. Recommended values of RTUNE and CTUNE to obtain transient deviation of 2% of Vout for a 1.5A step load with Vin=5V. Vo Co 3.3V 2.5V 1.8V 1.2V 0.6V 1 x 47F 2 x 47F 2 x 47F 4 x 47F 2 x 47F +330F Polymer 33 RTUNE 33 33 33 33 CTUNE 6800pF 15nF 15nF 33nF 82nF V 59mV 35mV 35mV 21mV 12mV Table 4. General recommended values of of RTUNE and CTUNE for Vin=3.3V and various external ceramic capacitor combinations. Co 1x47F 2x47F 4x47F 6x47F RTUNE 33 33 33 33 33 CTUNE 15nF 27nF 47nF 56nF 68nF 10x47F Table 5. Recommended values of RTUNE and CTUNE to obtain Vo 2.5V 1.8V 1.2V 0.6V RTUNE 33 33 33 4 x 47F +330F Polymer 33 CTUNE 22nF 27nF 47nF 150nF V 46mV 32mV 24mV 12mV Co 2 x 47F 2 x 47F 4 x 47F transient deviation of 2% of Vout for a 1.5A step load with Vin=3.3V. November 22, 2019 (c)2013 General Electric Company. All rights reserved. Page 16 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A 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 44 The preferred airflow direction for the module is shown in Figure 45. 25.4_ (1.0) Wind Tunnel PWBs Figure 45. Preferred airflow direction and location of hotspot of the module (Tref). Power Module 76.2_ (3.0) x 12.7_ (0.50) Probe Location for measuring airflow and ambient temperature Air flow Figure 44. Thermal Test Setup. The thermal reference points, Tref used in the specifications are shown in Figure 45. For reliable operation the temperatures at these points should not exceed 125oC. 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. November 22, 2019 (c)2013 General Electric Company. All rights reserved. Page 17 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current Example Application Circuit Requirements: Vin: 3.3V Vout: Iout: 1.8V 2.25A max., worst case load transient is from 1.5A to 2.25A Vout: 1.5% of Vout (27mV) for worst case load transient Vin, ripple 1.5% of Vin (50mV, p-p) Vin+ VIN Vout+ VOUT SENSE RTUNE + CI2 MODULE CI1 CTUNE Q3 ON/OFF CO1 TRIM GND RTrim CI1 22F/6.3V ceramic capacitor CI2 47F/6.3V bulk electrolytic CO1 CTune 2 x 47F/6.3V ceramic capacitor (e.g. Murata GRM31CR60J476ME19) 27nF ceramic capacitor (can be 1206, 0805 or 0603 size) RTune 33 ohms SMT resistor (can be 1206, 0805 or 0603 size) RTrim 1k SMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%) November 22, 2019 (c)2013 General Electric Company. All rights reserved. Page 18 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A 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.) PIN 10 PIN 7 November 22, 2019 PIN FUNCTION 1 ON/OFF 2 VIN 3 GND 4 VOUT 5 SENSE 6 TRIM 7 GND 8 NC 9 SEQ 10 NC PIN 8 (c)2013 General Electric Company. All rights reserved. Page 19 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A 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.) PIN 10 PIN 8 November 22, 2019 PIN 7 PIN FUNCTION 1 ON/OFF 2 VIN 3 GND 4 VOUT 5 SENSE 6 TRIM 7 GND 8 NC 9 SEQ 10 NC (c)2013 General Electric Company. All rights reserved. Page 20 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current Packaging Details The Pico TLynxTM 3A 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") November 22, 2019 (c)2013 General Electric Company. All rights reserved. Page 21 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current Surface Mount Information Pick and Place The Pico TLynxTM 3A 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. 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 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. Reflow Temp (C) Nozzle Recommendations 200 * Min. Time Above 235C 15 Seconds 150 Heating Zone 1C/Second Cooling Zone *Time Above 217C 60 Seconds 100 50 0 Bottom Side / First Side Assembly Reflow Time (Seconds) 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 for special manufacturing process instructions. Lead Free Soldering The Pico TLynxTM 3A 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. Figure 46. 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). 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-air-convection reflow profile based on the volume and thickness of the package (table 4-2). The suggested Pb-free solder paste is Sn/Ag/Cu (SAC). The recommended linear reflow profile using Sn/Ag/Cu solder is shown in Fig. 46. Soldering outside of the recommended profile requires testing to verify results and performance. For questions regarding Land grid array(LGA) soldering, solder volume; please contact GE for special manufacturing process instructions MSL Rating The Pico TLynxTM 3A modules have a MSL rating of 2a. 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). November 22, 2019 (c)2013 General Electric Company. All rights reserved. Page 22 GE Data Sheet PicoTLynxTM 3A: Non-Isolated DC-DC Power Modules 2.4Vdc -5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current Ordering Information Please contact your GE 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 APXH003A0X-SRZ 2.4 - 5.5Vdc 0.6 - 3.63Vdc 3A Negative No CC109113313 APTH003A0X-SRZ 2.4 - 5.5Vdc 0.6 - 3.63Vdc 3A Negative Yes CC109113338 Comcodes Table 9. Coding Scheme TLynx family Sequencing feature. Input voltage range Output current Output voltage AP T H 003A0 X T = with Seq. H = 2.4 - 5.5V 3.0A X = w/o Seq. On/Off logic X= No entry = programmable negative output Options ROHS Compliance -SR Z S = Surface Mount R= Tape&Reel Z = ROHS6 Contact Us For more information, call us at USA/Canada: +1 877 546 3243, or +1 972 244 9288 Asia-Pacific: +86.021.54279977*808 Europe, Middle-East and Africa: +49.89.878067-280 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. November 22, 2019 (c)2019 General Electric Company. All International rights reserved. Version 1.2