Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current Features ▪ Compliant to RoHS II EU “Directive 2011/65/EU” ▪ Compatible in a Pb-free or SnPb reflow environment (Z versions) ▪ Compliant to IPC-9592 (September 2008), Category 2, Class II ▪ Compliant to REACH Directive (EC) No 1907/2006 ▪ DOSA based ▪ Wide Input voltage range (4.5Vdc-14.4Vdc) ▪ Output voltage programmable from 0.6Vdc to 3.63Vdc via external resistor TM ▪ Tunable Loop to optimize dynamic output voltage response ▪ Power Good signal RoHS Compliant ▪ Fixed switching frequency with capability of external synchronization Applications ▪ Output over current protection (non-latching) ▪ Over temperature 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 8.5 mm (0.48 in x 0.48 in x ▪ Networking equipment 0.335 in(MAX)) ▪ Wide operating temperature range [-40°C to 85°C] ▪ Industrial equipment nd † ▪ UL* 60950-1 2 Ed. Recognized, CSA C22.2 No. 60950-1-07 ‡ nd Certified, and VDE (EN60950-1 2 Ed.) Licensed Vin+ Vout+ VIN VOUT ▪ ISO** 9001 and ISO 14001 certified manufacturing facilities VS+ PGOOD RTUNE MODULE CTUNE Cin TRIM Co RTrim SYNC ON/OFF SIG_GND GND VS- GND Description TM The 20A Analog PicoDLynxII power modules are non-isolated dc-dc converters that can deliver up to 20A of output current. These modules operate over a wide range of input voltage (V = 4.5Vdc-14.4Vdc) and provide a precisely regulated output voltage IN from 0.6Vdc to 3.63Vdc, programmable via an external resistor. Features include a remote On/Off, adjustable output voltage, over TM current and over temperature protection. The module also includes the Tunable Loop feature that 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 August 1, 2017 ©2017 General Electric Company. All rights reserved. Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A 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 Input Voltage All VIN -0.3 15 V Continuous VS, All -0.3 7 V SYNC All 3.6 V Operating Ambient Temperature All TA -40 105 °C (see Thermal Considerations section) Storage Temperature All Tstg -55 125 °C 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 V 4.5 14.4 Vdc IN  Maximum Input Current All IIN,max 18 Adc (V =4.5V to 14V, I =I ) IN O O, max V = 0.6 Vdc I 47 mA O,set IN,No load Input No Load Current V = O,set (VIN = 12Vdc, IO = 0, module enabled) I 120 mA IN,No load 3.63Vdc Input Stand-by Current All I 16 mA IN,stand-by (VIN = 12Vdc, module disabled) 2 2 Inrush Transient All I t 1 A s Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1μH source impedance; V =0 to 14V I = I ; All 48 mAp-p IN , O Omax See Test Configurations) Input Ripple Rejection (120Hz) All -76 dB Output Voltage Set-point accuracy over entire output range 0 to 85°C, Vo=over entire range All VO, set -0.5 +0.5 % VO, set -40 to 85°C, Vo=over entire range All VO, set -1 +1 % VO, set 1 Voltage Regulation (VIN=VIN, min to 4 mV Line Regulation VIN, max) (12VIN±20%) 2 mV Load (IO=IO, min to IO, max) Regulation All 2 mV 1 Worst case Line and load regulation data from design verification testing as per IPC9592. August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 2 Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current Electrical Specifications (continued) Symbo Parameter Device Min Typ Max Unit l Adjustment Range (selected by an external resistor) (Some output voltages may not be possible depending on All V 0.6 3.63 Vdc O the input voltage – see Feature Descriptions Section) Remote Sense Range All 0.5 Vdc Output Ripple and Noise on nominal output (V =V and I =I to I Co = 0.1μF // 100 μF IN IN, nom O O, min O, max ceramic capacitors) Peak-to-Peak (5Hz to 20MHz bandwidth) All  40 mV pk-pk RMS (5Hz to 20MHz bandwidth) All 7.5 mVrms 2 External Capacitance TM Without the Tunable Loop ESR ≥ 1 mΩ All C 2x47 200 μF O, max  TM With the Tunable Loop ESR ≥ 0.15 mΩ All CO, max 2x47  1000 μF ESR ≥ 10 mΩ All C 2x47 10000 μF O, max  Output Current (in either sink or source mode) All Io 0 20 Adc Output Current Limit Inception (Hiccup Mode) All I 130 % I O, lim o,max (current limit does not operate in sink mode) Output Short-Circuit Current All I 10.9 Arms O, s/c (VO≤250mV) ( Hiccup Mode ) Efficiency VO,set = 0.6Vdc η 78.9% % VIN= 12Vdc, TA=25°C VO, set = 1.2Vdc η 87.5% % I =I V = V V = 1.8Vdc η 90.8% % O O, max , O O,set O,set V = 2.5Vdc η 92.6% % O,set VO,set = 3.3Vdc η 93.9% % Switching Frequency All fsw 500 kHz 2 TM External capacitors may require using the new Tunable Loop feature to ensure that the module is stable as well as getting the best TM transient response. See the Tunable Loop section for details. August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 3 Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit Frequency Synchronization All Synchronization Frequency Range (2 x fswitch) All 950 1000 1050 kHz High-Level Input Voltage All VIH 2 V Low-Level Input Voltage All VIL 0.4 V Minimum Pulse Width, SYNC All tSYNC 100 ns Maximum SYNC rise time All tSYNC_SH 100 ns General Specifications Parameter Device Min Typ Max Unit Calculated MTBF (I =0.8I , T =40°C) Telecordia Issue 2 O O, max A All 61, 896, 359 Hours Method 1 Case 3 Weight 2.6 (0.092) g (oz.) Feature Specifications Unless otherwise indicated, specifications apply overall 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 (V =V to V ; open collector or equivalent, IN IN, min IN, max Signal referenced to GND) Device code with suffix “4” – Positive Logic (See Ordering Information) Logic High (Module ON) Input High Current All IIH  17 mA Input High Voltage All VIH 2.1  7 V Logic Low (Module OFF) Input Low Current All IIL 2 mA   Input Low Voltage All VIL -0.2  0.8 V 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) pwr64608 Logic High (Module OFF) Input High Current All IIH ― ― 3 mA Input High Voltage All VIH 2.1 ― 7 Vdc Logic Low (Module ON) Input low Current All IIL ― ― 0.3 μA Input Low Voltage All VIL -0.2 ― 0.8 Vdc August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 4 Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current Feature Specifications (cont.) Parameter Device Symbol Min Typ Max Units 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 = All Tdelay 1.2 msec 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 All Tdelay 1.1 msec which Von/Off is enabled until Vo = 10% of Vo, set) Output voltage Rise time (time for Vo to rise from All Trise 6 msec 10% of Vo, set to 90% of Vo, set) o Output voltage overshoot (TA = 25 C V = V to V ,I = I to I ) 3.0 % V IN IN, min IN, max O O, min O, max O, set With or without maximum external capacitance Over Temperature Protection All T - 135 °C ref (See Thermal Considerations section) Input Undervoltage Lockout Turn-on Threshold All 4.25 Vdc Turn-off Threshold All 4.05 Vdc Hysteresis All 0.2 Vdc PGOOD (Power Good) Signal Interface Open Drain, V  5VDC supply Overvoltage threshold for PGOOD ON All 108.33 %VO, set Overvoltage threshold for PGOOD OFF All 112.5 %V O, set Undervoltage threshold for PGOOD ON All 91.67 %VO, set Undervoltage threshold for PGOOD OFF All 87.5 %VO, set Pulldown resistance of PGOOD pin All 40 70  Sink current capability into PGOOD pin All 5 mA * Over temperature Warning – Warning may not activate before alarm and unit may shutdown before warning August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 5 GE Data Sheet TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current Characteristic Curves TM o The following figures provide typical characteristics for the 20A Analog PicoDLynxII at 0.6Vo and 25 C. O OUTPUT CURRENT, I (A) AMBIENT TEMPERATURE, T C O A Figure 2. Derating Output Current versus Ambient Temperature Figure 1. Converter Efficiency versus Output Current. and Airflow. TIME, t (1s/div) TIME, t (20s /div) Figure 4. Transient Response to Dynamic Load Change from Figure 3. Typical output ripple (CO=7x22μF ceramic, VIN = 12V, 50% to 100% at 12Vin, Cout= 7x47uF+9x330uF CTune=15nF, Io = Io,max, ). RTune=300 TIME, t (2ms/div) TIME, t (2ms/div) Figure 6. Typical Start-up Using Input Voltage (VIN = 12V, Io = Figure 5. Typical Start-up Using On/Off Voltage (Io = Io,max). Io,max). August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 6 OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE EFFICIENCY,  (%) V (V) (200mV/div) V (V) (5V/div) V (V) (10mV/div) O ON/OFF O OUTPUT VOLTAGE INPUT VOLTAGE OUTPUT CURRENT, OUTPUT OLTAGE OUTPUT CURRENT, Io (A) V (V) (200mV/div) V (V) (10V/div) I (A) (5Adiv) V (V) (10mV/div) O IN O O GE Data Sheet TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current Characteristic Curves TM o The following figures provide typical characteristics for the 20A Analog PicoDLynxII at 1.2Vo and 25 C. O OUTPUT CURRENT, I (A) AMBIENT TEMPERATURE, T C O A Figure 8. Derating Output Current versus Ambient Temperature Figure 7. Converter Efficiency versus Output Current. and Airflow. TIME, t (1s/div) TIME, t (20s /div) Figure 10. Transient Response to Dynamic Load Change from Figure 9. Typical output ripple (CO=7x22μF ceramic, VIN = 12V, 50% to 100% at 12Vin, Cout= 7x47uF + 4x330uF CTune=6800pF, Io = Io,max, ). RTune=300 TIME, t (2ms/div) TIME, t (2ms/div) Figure 12. Typical Start-up Using Input Voltage (VIN = 12V, Io = Figure 11. Typical Start-up Using On/Off Voltage (Io = Io,max). Io,max). August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 7 OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE VO (V) (300mV/div) VON/OFF (V) (5V/div) VO (V) (10mV/div) EFFICIENCY,  (%) OUTPUT VOLTAGE INPUT VOLTAGE OUTPUT CURRENT, OUTPUT VOLTAGE VO (V) (300mV/div) VIN (V) (10V/div) IO (A) (5Adiv) VO (V) (20mV/div) OUTPUT CURRENT, Io (A) GE Data Sheet TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current Characteristic Curves TM o The following figures provide typical characteristics for the 20A Analog PicoDLynxII at 1.8Vo and 25 C. O OUTPUT CURRENT, I (A) AMBIENT TEMPERATURE, T C O A Figure 14. Derating Output Current versus Ambient Figure 13. Converter Efficiency versus Output Current. Temperature and Airflow. TIME, t (1s/div) TIME, t (20s /div) Figure 16. Transient Response to Dynamic Load Change from Figure 15. Typical output ripple and noise (C =7X22μF ceramic, O 50% to 100% at 12Vin, Cout = 7x47uF + 2x330uF VIN = 12V, Io = Io,max, ). CTune=3900pF, RTune=300 TIME, t (2ms/div) TIME, t (2ms/div) Figure 18. Typical Start-up Using Input Voltage (VIN = 12V, Io = Figure 17. Typical Start-up Using On/Off Voltage (Io = Io,max). Io,max). August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 8 OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE VO (V) (500mV/div) VON/OFF (V) 5V/div) VO (V) (10mV/div) EFFICIENCY,  (%) OUTPUT VOLTAGE INPUT VOLTAGE OUTPUT CURRENT, OUTPUT VOLTAGE V (V) (500mV/div) V (V) (10V/div) I (A) (5Adiv) V (V) (20mV/div) OUTPUT CURRENT, Io (A) O IN O O GE Data Sheet TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current Characteristic Curves TM o The following figures provide typical characteristics for the 20A Analog PicoDLynxII at 2.5Vo and 25 C. O OUTPUT CURRENT, I (A) AMBIENT TEMPERATURE, T C O A Figure 20. Derating Output Current versus Ambient Temperature Figure 19. Converter Efficiency versus Output Current. and Airflow. TIME, t (1s/div) TIME, t (20s /div) Figure 22. Transient Response to Dynamic Load Change from Figure 21. Typical output ripple and noise (C =7x22μF ceramic, O 50% to 100% at 12Vin, Cout = 7x47uF + 1x330uF CTune=2700pF, VIN = 12V, Io = Io,max, ). RTune=300 TIME, t (2ms/div) TIME, t (2ms/div) Figure 24. Typical Start-up Using Input Voltage (VIN = 12V, Io = Figure 23. Typical Start-up Using On/Off Voltage (Io = Io,max). Io,max). August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 9 OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE VO (V) (1V/div) VON/OFF (V) (5V/div) VO (V) (20mV/div) EFFICIENCY,  (%) OUTPUT VOLTAGE INPUT VOLTAGE OUTPUT CURRENT, OUTPUT VOLTAGE VO (V) (1V/div) VIN (V) (10V/div) IO (A) (5Adiv) VO (V) (50mV/div) OUTPUT CURRENT, Io (A) GE Data Sheet TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current Characteristic Curves TM o The following figures provide typical characteristics for the 20A Analog PicoDLynxII at 3.3Vo and 25 C. O OUTPUT CURRENT, I (A) AMBIENT TEMPERATURE, T C O A Figure 26. Derating Output Current versus Ambient Figure 25. Converter Efficiency versus Output Current. Temperature and Airflow. TIME, t (1s/div) TIME, t (20s /div) Figure 28 Transient Response to Dynamic Load Change from Figure 27. Typical output ripple and noise (C =7x22μF ceramic, O 50% to 100% at 12Vin, Cout= 4x47uF + 1x330uF VIN = 12V, Io = Io,max, ). CTune=1800pF, RTune=300 TIME, t (2ms/div) TIME, t (2ms/div) Figure 30. Typical Start-up Using Input Voltage (VIN = 12V, Io = Figure 29. Typical Start-up Using On/Off Voltage (Io = Io,max). Io,max). August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 10 OUTPUT VOLTAGE ON/OFF VOLTAGE OUTPUT VOLTAGE VO (V) (1V/div) VON/OFF (V) (5V/div) VO (V) (20mV/div) EFFICIENCY,  (%) OUTPUT VOLTAGE INPUT VOLTAGE OUTPUT CURRENT, OUTPUT VOLTAGE V (V) (1V/div) V (V) (10V/div) O IN IO (A) (5Adiv) VO (V) (50mV/div) OUTPUT CURRENT, Io (A) Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current 40 Design Considerations 5x22uF Ext Cap 7x22uF Ext Cap Input Filtering 11x22uF Ext Cap TM 30 The 20A Analog PicoDLynxII 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 20 input pin of the module, to minimize input ripple voltage and ensure module stability. To minimize input voltage ripple, ceramic capacitors are 10 recommended at the input of the module. Figure 31 shows the input ripple voltage for various output voltages at 20A of load current with 4x22 µF or 6x22 µF ceramic capacitors and an input of 12V. 0 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3 3.3 280 Output Voltage(Volts) 4x22uF 240 6x22 uF Figure 32. Output ripple voltage for various output 200 voltages with external 5x22 µF, 7x22 µF or 11x22 µF ceramic capacitors at the output (20A load). Input voltage 160 is 12V. 120 80 Safety Considerations 40 For safety agency approval the power module must be 0 installed in compliance with the spacing and separation 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3 3.3 requirements of the end-use safety agency standards, i.e., nd ANSI/UL 60950-1 2 Revised October 14, 2014, CSA C22.2 Output Voltage (Vdc) No. 60950-1-07, Second Ed. + A2:2014 (MOD), DIN EN 60950- 1:2006 + A11:2009 + A1:2010 +A12:2011, + A2:2013 Figure 31. Input ripple voltage for various output (VDE0805 Teil 1: 2014-08)(pending). voltages with 4x22 µF or 6x22 µF ceramic capacitors at the input (20A load). Input voltage is 12V. For the converter output to be considered meeting the requirements of safety extra-low voltage (SELV), the input Output Filtering must meet SELV requirements. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. These modules are designed for low output ripple voltage and will meet the maximum output ripple specification with The UDT020A0X series were tested using an external 0.1 µF ceramic and 7x22 µF ceramic capacitors at the Littelfuse 456 series fast-acting fuse rated at 30A in the output of the module. However, additional output filtering ungrounded input. 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. Figure 32 provides output ripple information for different external capacitance values at various Vo and a full load current of 20A. 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 TM module can be achieved by using the Tunable Loop feature described later in this data sheet. August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 11 Input Ripple Voltage (mVp-p) Output Ripple (mVp-p) Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current Analog Feature Descriptions DLYNXII MODULE Vin Remote On/Off TM The 20A Analog PicoDLynxII power modules feature an R1 On/Off pin for remote On/Off operation. Two On/Off logic options are available. In the Positive Logic On/Off option, I ON/OFF (device code suffix “4” – see Ordering Information), the ENABLE module turns ON during a logic High on the On/Off pin and + turns OFF during a logic Low. With the Negative Logic 3.09K On/Off option, (no device code suffix, see Ordering V ON/OFF Information), the module turns OFF during logic High and ON Q2 during logic Low. The On/Off signal should be always referenced to ground. For either On/Off logic option, leaving _ GND the On/Off pin disconnected will turn the module ON when input voltage is present. Figure 34. Circuit configuration for using negative On/Off For positive logic modules, the circuit configuration for using logic. the On/Off pin is shown in Figure 33. When the external Monotonic Start-up and Shutdown transistor Q1 is in the OFF state, the internal PWM #Enable is pulled up internally, thus turning the module ON. When The module has monotonic start-up and shutdown behavior transistor Q1 is turned ON, the On/Off pin is pulled low, and for any combination of rated input voltage, output current consequently the internal PWM Enable signal is pulled low and operating temperature range. and the module is OFF. Startup into Pre-biased Output For negative logic On/Off modules, the circuit configuration is shown in Fig. 34. The On/Off pin should be pulled high with The module can start into a prebiased output as long as the an external pull-up resistor. When transistor Q2 is in the OFF prebias voltage is 0.5V less than the set output voltage. state, the On/Off pin is pulled high, which pulls the internal Analog Output Voltage Programming ENABLE# High and the module is OFF. To turn the module ON, Q2 is turned ON pulling the On/Off pin low resulting in The output voltage of the module is programmable to any the PWM ENABLE# pin going Low. The maximum voltage voltage from 0.6dc to 3.63Vdc by connecting a resistor allowed on the On/Off pin is 7V. If Vin is used as a source, between the Trim and SIG_GND pins of the module. Certain then a suitable external resistor R1 must be used to ensure restrictions apply on the output voltage set point depending that the voltage on the On/Off pin does not exceed 7V on the input voltage. These are shown in the Output Voltage vs. Input Voltage Set Point Area plot in Fig. 35. The Upper Limit curve shows that for output voltages lower than 1V, the input voltage must be lower than the maximum of 14.4V. The Lower Limit curve shows that for output voltages higher than 3.3V, the input voltage needs to be slightly higher than the minimum of 4.5V. DLYNXII MODULE 6.5V 16 40.2K 14 12 Upper I 10 ON/OFF ENABLE 8 6 4 Q1 2 Lower GND 0 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3 3.3 3.6 Output Voltage (V) Figure 33. Circuit configuration for using positive On/Off logic. Figure 35. Output Voltage vs. Input Voltage Set Point Area plot showing limits where the output voltage can be set for different input voltages. August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 12 Input Voltage (v) Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current to the ground pin for margining-up the output voltage and V (+) V (+) IN O by connecting a resistor, Rmargin-down, from the Trim pin to output pin for margining-down. Figure 37 shows the circuit VS+ configuration for output voltage margining. The POL Programming Tool or Power Module Wizard(PMW), available ON/OFF at www.gecriticalpower.com under the Downloads section, LOAD TRIM also calculates the values of R and R for a margin-up margin-down specific output voltage and % margin. Please consult your R trim local GE technical representative for additional details. Vo SIG_GND VS─ Rmargin-down MODULE Caution – Do not connect SIG_GND to GND elsewhere in the Q2 layout Figure 36. Circuit configuration for programming output Trim voltage using an external resistor. Rmargin-up Rtrim Without an external resistor between Trim and SIG_GND pins, the output of the module will be 0.6Vdc. To calculate Q1 the value of the trim resistor, Rtrim for a desired output SIG_GND voltage, should be as per the following equation:   12 Rtr im  k Figure 37. Circuit Configuration for margining Output    Vo 0.6   voltage. Rtrim is the external resistor in kΩ Vo is the desired output voltage. Table 1 provides Rtrim values required for some common output voltages. Table 1 V (V) Rtrim (KΩ) O, set 0.6 Open 0.9 40 1.0 30 1.2 20 1.5 13.33 1.8 10 2.5 6.316 3.3 4.444 5.0 2.727 Remote Sense The power module has a Remote Sense feature to minimize the effects of distribution losses by regulating the voltage between the sense pins (VS+ and VS-). The voltage drop between the sense pins and the VOUT and GND pins of the module should not exceed 0.5V. Analog Voltage Margining Output voltage margining can be implemented in the module by connecting a resistor, Rmargin-up, from the Trim pin August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 13 Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current External capacitors are usually added to the output of the Overcurrent Protection module for two reasons: to reduce output ripple and noise To provide protection in a fault (output overload) condition, (see Figure 38) and to reduce output voltage deviations from the unit is equipped with internal current-limiting circuitry the steady-state value in the presence of dynamic load and can endure current limiting continuously. At the point of current changes. Adding external capacitance however current-limit inception, the unit enters hiccup mode. The unit affects the voltage control loop of the module, typically operates normally once the output current is brought back causing the loop to slow down with sluggish response. into its specified range. Larger values of external capacitance could also cause the module to become unstable. Overtemperature Protection TM The Tunable Loop allows the user to externally adjust the To provide protection in a fault condition, the unit is voltage control loop to match the filter network connected equipped with a thermal shutdown circuit. The unit will shut TM to the output of the module. The Tunable Loop is down if the over-temperature threshold of TBD (typ) is implemented by connecting a series R-C between the VS+ exceeded at the thermal reference point T .Please refer to ref and TRIM pins of the module, as shown in Fig. 40. This R-C Electrical characteristic table, over-temperature section on allows the user to externally adjust the voltage loop page 5. Once the unit goes into thermal shutdown it will feedback compensation of the module. then wait to cool before attempting to restart. Input Undervoltage Lockout VOUT VS+ At input voltages below the input undervoltage lockout limit, the module operation is disabled. The module will begin to RTune operate at an input voltage above the undervoltage lockout turn-on threshold. CO MODULE CTune Synchronization TRIM The module switching frequency can be synchronized to a signal with an external frequency within a specified range. RTrim Synchronization can be done by using the external signal applied to the SYNC pin of the module as shown in Fig. 39, SIG_GND with the converter being synchronized by the rising edge of GND the external signal. The Module switches at half the SYNC frequency. The Electrical Specifications table specifies the requirements of the external SYNC signal. If the SYNC pin is Figure. 40. Circuit diagram showing connection of RTUME not used, the module should free run at the default and C to tune the control loop of the module. TUNE switching frequency. If synchronization is not being used, connect the SYNC pin to Sig_GND. Recommended values of RTUNE and CTUNE for different output capacitor combinations are given in Tables 2 and 3. Table 3 MODULE shows the recommended values of RTUNE and CTUNE for different values of ceramic output capacitors up to 1000uF SYNC that might be needed for an application to meet output ripple and noise requirements. Selecting R and C TUNE TUNE + according to Table 3 will ensure stable operation of the ─ module. In applications with tight output voltage limits in the SIG_GND presence of dynamic current loading, additional output capacitance will be required. Table 3 lists recommended values of R and C in order to meet 2% output TUNE TUNE Figure 39. External source connections to synchronize voltage deviation limits for some common output voltages switching frequency of the module. in the presence of a 10A to 20A step change (50% of full Dual Layout load), with an input voltage of 12V. Identical dimensions and pin layout of Analog and Digital Please contact your GE technical representative to obtain PicoDLynxII modules permit migration from one to the other more details of this feature as well as for guidelines on how without needing to change the layout. In both cases the trim to select the right value of external R-C to tune the module resistor is connected between trim and signal ground. The for best transient performance and stable operation for output of the analog module cannot be trimmed below 0.6V other output capacitance values. TM Tunable Loop The module has a feature that optimizes transient response TM of the module called Tunable Loop . August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 14 Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current Table 2. General recommended values of of R and TUNE CTUNE for Vin=12V and various external ceramic capacitor combinations. Co 4x47F 6x47F 8x47F 10x47F 20x47F R TUNE 300 300 300 300 300 C TUNE 560p 820p 1n 1.5n 2.7n Table 3. Recommended values of RTUNE and CTUNE to obtain transient deviation of 2% of Vout for a 10A step load with Vin=12V. Vo 3.3V 2.5V 1.8V 1.2V 0.6V 4x47uF + 7x47uF + 7x47uF + 7x47uF + 7x47uF + Co 1x330uF 1x330uF 2x330uF 4x330uF 9x330uF RTUNE 300 300 300 300 300 C TUNE 1800pF 2700pF 3900pF 6800pF 15nF V 51mV 40mV 30mV 20mV 12mV Note: The capacitors used in the Tunable Loop tables are 47 μF/3 mΩ ESR ceramic and 330 μF/9 mΩ ESR polymer capacitors. Power Module Wizard GE offers a free web based easy to use tool that helps users simulate the Tunable Loop performance of the PKX020. Go to http://ge.transim.com/pmd/Home and sign up for a free account and use the module selector tool. The tool also offers downloadable Simplis/Simetrix models that can be used to assess transient performance, module stability, etc. Power Good The PGOOD terminal can be connected through a pullup resistor (suggested value 100K) to a source of 5VDC or lower. The current through the PGood terminal should be limited to a max value of 5mA August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 15 Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current The thermal reference points, T used in the specifications ref Thermal Considerations are also shown in Figure 42. For reliable operation the o Power modules operate in a variety of thermal temperatures at these points should not exceed 135 C. The environments; however, sufficient cooling should always be output power of the module should not exceed the rated provided to help ensure reliable operation. power of the module (Vo,set x Io,max). Considerations include ambient temperature, airflow, Please refer to the Application Note “Thermal module power dissipation, and the need for increased Characterization Process For Open-Frame Board-Mounted reliability. A reduction in the operating temperature of the Power Modules” for a detailed discussion of thermal module will result in an increase in reliability. The thermal aspects including maximum device temperatures. data presented here is based on physical measurements taken in a wind tunnel. The test set-up is shown in Figure 41. The preferred airflow direction for the module is in Figure 42. 25.4_ Wind Tunnel (1.0) PWBs Power Module Figure 42. Preferred airflow direction and location of hot- spot of the module (Tref). 76.2_ (3.0) x Probe Location for measuring 12.7_ airflow and (0.50) ambient temperature Air flow Figure 41. Thermal Test Setup. August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 16 Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A 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 4 and Table 5 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-STD- 810, Method 514.5, Procedure I, for functional (performance) and endurance random vibration using the performance and endurance levels shown in Table 4 and Table 5 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. Table 4: Performance Vibration Qualification - All Axes PSD Level PSD Level PSD Level Frequency (Hz) Frequency (Hz) Frequency (Hz) (G2/Hz) (G2/Hz) (G2/Hz) 10 1.14E-03 170 2.54E-03 690 1.03E-03 30 5.96E-03 230 3.70E-03 800 7.29E-03 40 9.53E-04 290 7.99E-04 890 1.00E-03 50 2.08E-03 340 1.12E-02 1070 2.67E-03 90 2.08E-03 370 1.12E-02 1240 1.08E-03 110 7.05E-04 430 8.84E-04 1550 2.54E-03 130 5.00E-03 490 1.54E-03 1780 2.88E-03 140 8.20E-04 560 5.62E-04 2000 5.62E-04 Table 5: Endurance Vibration Qualification - All Axes PSD Level PSD Level PSD Level Frequency (Hz) Frequency (Hz) Frequency (Hz) (G2/Hz) (G2/Hz) (G2/Hz) 10 0.00803 170 0.01795 690 0.00727 30 0.04216 230 0.02616 800 0.05155 40 0.00674 290 0.00565 890 0.00709 50 0.01468 340 0.07901 1070 0.01887 90 0.01468 370 0.07901 1240 0.00764 110 0.00498 430 0.00625 1550 0.01795 130 0.03536 490 0.01086 1780 0.02035 140 0.0058 560 0.00398 2000 0.00398 August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 17 Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current Example Application Circuit Requirements: Vin: 12V Vout: 1.8V Iout: 15A max., worst case load transient is from 10A to 15A Vout: 1.5% of Vout (27mV) for worst case load transient Vin, ripple 1.5% of Vin (180mV, p-p) Vin+ Vout+ VIN VOUT VS+ PGOOD RTUNE MODULE CTUNE CI2 TRIM CI3 CI1 CO3 CO1 CO2 RTrim SYNC ON/OFF SIG_GND GND VS- GND CI1 Decoupling caps - 1x0.047F/16V ceramic(e.g. Murata LLL185R71C473MA01) + 1x0.1uF/16V 0402 ceramic CI2 4x22F/16V ceramic capacitor (e.g. Murata GRM32ER61C226KE20) CI3 47F/16V bulk electrolytic CO1 Decoupling caps - 1x0.047F/16V ceramic (e.g. Murata LLL185R71C473MA01) + 1x0.1uF/16V 0402 ceramic CO2 7 x 47uF/6.3V CO3 1 x 330uF/6V POSCAP CTune 2700 pF ceramic capacitor (can be 1206, 0805 or 0603 size) RTune 300 SMT resistor (can be 1206, 0805 or 0603 size) RTrim 10k SMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%) August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 18 Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A 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.) 12.2 (0.48) 12.2 (0.48) DIMENSIONS IN INCHES 8.5 ONLY (0.335) MAX PIN FUNCTION PIN FUNCTION 1 ON/OFF 10 PGOOD NC NC 1 2 VIN 11 SYNC 3 GND 12 VS- 4 VOUT 13 SIG_GND 5 VS+ (SENSE) 14 NC NC 6 TRIM 15 NC 7 GND 16 NC NC NC NC 8 NC 17 NC 9 NC 1 If unused, connect to SIG_GND August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 19 Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A 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.) NC NC NC NC NC NC PIN FUNCTION PIN FUNCTION 1 ON/OFF 10 PGOOD 2 SYNC 2 VIN 11 3 GND 12 VS- 4 VOUT 13 SIG_GND 5 VS+ (SENSE) 14 NC 6 TRIM 15 NC 7 GND 16 NC 8 NC 17 NC 9 NC 2 If unused, connect to SIG_GND. August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 20 Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current Packaging Details TM The 12V Analog PicoDLynxII 20A modules are supplied in tape & reel as standard. Modules are shipped in quantities of 200 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”) August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 21 Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current Devices). Moisture barrier bags (MBB) with desiccant are Surface Mount Information required for MSL ratings of 2 or greater. These sealed Pick and Place packages should not be broken until time of use. Once the original package is broken, the floor life of the product at TM The 20A Analog PicoDLynxII modules use an open frame conditions of  30°C and 60% relative humidity varies construction and are designed for a fully automated according to the MSL rating (see J-STD-033A). The shelf life assembly process. The modules are fitted with a label for dry packed SMT packages will be a minimum of 12 designed to provide a large surface area for pick and place months from the bag seal date, when stored at the following operations. The label meets all the requirements for surface conditions: < 40° C, < 90% relative humidity. mount processing, as well as safety standards, and is able o 300 to withstand reflow temperatures of up to 300 C. The label Per J-STD-020 Rev. D also carries product information such as product code, Peak Temp 260°C 250 serial number and the location of manufacture. Cooling 200 Nozzle Recommendations Zone * Min. Time Above 235°C 15 Seconds The module weight has been kept to a minimum by using 150 Heating Zone *Time Above 217°C open frame construction. Variables such as nozzle size, tip 1°C/Second 60 Seconds 100 style, vacuum pressure and placement speed should be considered to optimize this process. The minimum 50 recommended inside nozzle diameter for reliable operation is 3mm. The maximum nozzle outer diameter, which will 0 safely fit within the allowable component spacing, is 7 mm. Reflow Time (Seconds) Figure 43. Recommended linear reflow profile using Bottom Side / First Side Assembly Sn/Ag/Cu solder. This module is not recommended for assembly on the bottom side of a customer board. If such an assembly is Post Solder Cleaning and Drying Considerations attempted, components may fall off the module during the second reflow process. Post solder cleaning is usually the final circuit-board assembly process prior to electrical board testing. The result Lead Free Soldering of inadequate cleaning and drying can affect both the The modules are lead-free (Pb-free) and RoHS compliant reliability of a power module and the testability of the and fully compatible in a Pb-free soldering process. Failure finished circuit-board assembly. For guidance on to observe the instructions below may result in the failure of appropriate soldering, cleaning and drying procedures, refer or cause damage to the modules and can adversely affect to Board Mounted Power Modules: Soldering and Cleaning long-term reliability. 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). For questions regarding Land grid array(LGA) soldering, solder volume; please contact GE for special manufacturing process instructions. The recommended linear reflow profile using Sn/Ag/Cu solder is shown in Fig. 43. Soldering outside of the recommended profile requires testing to verify results and performance. MSL Rating TM The 20A Analog PicoDLynxII 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 August 1, 2017 ©2017 General Electric Company. All rights reserved. Page 22 Reflow Temp (°C) Data Sheet GE TM 20A Analog PicoDLynxII : Non-Isolated DC-DC Power Modules 4.5Vdc –14.4Vdc input; 0.6Vdc to 3.63Vdc output; 20A Output Current Ordering Information Please contact your GE Sales Representative for pricing, availability and optional features. Table 9. Device Codes Input Output Output On/Off Device Code Sequencing Comcodes Voltage Range Voltage Current Logic PKX020A0X3-SRZ 4.5 – 14.4Vdc 0.6 – 3.63Vdc 20A Negative No 150047416 PKX020A0X3-SRDZ 4.5 – 14.4Vdc 0.6 – 3.63Vdc 20A Negative No 150052502 PKX020A0X43-SRZ 4.5 – 14.4Vdc 0.6 – 3.63Vdc 20A Positive No 150047417 PKX020A0X43-SRDZ 4.5 – 14.4Vdc 0.6 – 3.63Vdc 20A Positive No 150052503 -Z refers to RoHS compliant parts Table 10. Coding Scheme Package Family Sequencing Output Output On/Off Remote ROHS Identifier Option current voltage logic Sense Options Compliance P K X 020A0 X 3 -SR -D Z P=Pico J=DLynx T=with EZ 20A X = 4 = 3 = S = D = 105°C Z = ROHS6 II Digital Sequence programm positive Remote Surface operating U=Pico able output Sense Mount ambient, K = X=without No entry 40G M=Mega DLynxII sequencing = R = operating Analog. negative Tape & G=Giga shock as Reel per MIL Std 810F 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 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. August 1, 2017 ©2017 General Electric Company. All International rights reserved. Version 1.7