Data Sheet GE TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc –5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc –14Vdc input; 0.8Vdc to 5.5Vdc output; 25A Output Current Features  Compliant to RoHS EU Directive 2011/65/EU (-Z versions)  Compliant to RoHS EU Directive 2011/65/EU under exemption 7b (Lead solder exemption). Exemption 7b will expire after June 1, 2016 at which time this product will no longer be RoHS compliant (non-Z versions)  Delivers up to 30A of output current  High efficiency – 93% 3.3V full load (VIN=12Vdc)  Available in two input voltage ranges RoHS Compliant ATH: 4.5 to 5.5Vdc ATS: 6.0 to 14Vdc  Output voltage programmable from Applications ATH: 0.8 to 3.63Vdc  Distributed power architectures ATS: 0.8 to 5.5Vdc  Intermediate bus voltage applications  Small size and low profile:  Telecommunications equipment 50.8 mm x 12.7 mm x 14.0 mm  Servers and storage applications 2.00 in. x 0.50 in. x 0.55 in.  Networking equipment  Monotonic start-up into pre-biased output TM  Output voltage sequencing (EZ-SEQUENCE )  Remote On/Off  Remote Sense  Over current and Over temperature protection  Parallel operation with active current sharing  Wide operating temperature range (-40°C to 85°C) †  UL* 60950 Recognized, CSA C22.2 No. 60950-00 Certified, ‡ rd and VDE 0805 (EN60950-1 3 edition) Licensed  ISO** 9001 and ISO 14001 certified manufacturing facilities Description The Austin MegaLynx series SIP power modules are non-isolated DC-DC converters in an industry standard package that can deliver up to 30A of output current with a full load efficiency of 92% at 3.3Vdc output voltage (V = 12Vdc). The ATH series of IN modules operate off an input voltage from 4.5 to 5.5Vdc and provide an output voltage that is programmable from 0.8 to 3.63Vdc, while the ATS series of modules have an input voltage range from 6 to 14V and provide a programmable output voltage ranging from 0.8 to 5.5Vdc. Both series have a sequencing feature that enables designers to implement various types of output voltage sequencing when powering multiple modules on the board. Additional features include remote On/Off, adjustable output voltage, remote sense, over current, over temperature protection and active current sharing between modules. * 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 January 20, 2016 ©2016 General Electric Company. All rights reserved. GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A 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 Continuous All VIN -0.3 15 Vdc Sequencing pin voltage All VsEQ -0.3 15 Vdc Operating Ambient Temperature All T -40 85 °C A (see Thermal Considerations section) Storage Temperature All T -55 125 °C stg 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 ATH V 4.5 5.0 5.5 Vdc IN ATS VIN 6.0 12 14 Vdc Maximum Input Current ATH I 27 Adc IN,max (VIN= VIN,min , VO= VO,set, IO=IO, max) ATS IIN,max 26 Adc 2 2 Inrush Transient All 1 I t A s Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1μH source impedance; VIN=6.0V All 100 mAp-p to 14.0V, I = I ; See Figure 1) O Omax Input Ripple Rejection (120Hz) All 50 dB January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 2 GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A Output Current Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit Output Voltage Set-point All V -1.5 +1.5 % V O, set  O, set (V =V , I =I , T =25°C) IN IN,min O O, max ref Output Voltage All VO, set –3.0 +3.0 % VO, set (Over all operating input voltage, resistive load, and temperature conditions until end of life) Adjustment Range Selected by an external resistor ATH VO 0.8 3.63 Vdc ATS VO 0.8 5.5 Vdc Output Regulation Line (VIN=VIN, min to VIN, max) All 0.1 % VO, set Load (IO=IO, min to IO, max) All 0.4 % VO, set Temperature (T =T to T ) All 0.5 1 % V ref A, min A, max O, set Output Ripple and Noise on nominal output (V =V and I =I to I IN IN, nom O O, min O, max C = 0.01μF // 0.1μF // 10μF ceramic capacitors) OUT Peak-to-Peak (5Hz to 20MHz bandwidth) Vo ≤ 2.5V 50 mV pk-pk 2.5V < Vo ≤ Peak-to-Peak (5Hz to 20MHz bandwidth) 75 mVpk-pk 3.63V Peak-to-Peak (5Hz to 20MHz bandwidth) Vo > 3.63V 100 mV pk-pk External Capacitance ESR ≥ 1 mΩ All C 0 2,000 µF O, max ESR ≥ 10 mΩ All C 0 10,000 µF O, max ATH025/ATS0 Output Current (V = 5Vdc/12Vdc) I 0 25 Adc IN o 25 Output Current (VIN = 5Vdc) ATH030 Io 0 30 Adc Output Current Limit Inception (Hiccup Mode) All IO, lim 120 % Iomax Output Short-Circuit Current All I 20 % I O, s/c omax (V ≤250mV) ( Hiccup Mode ) O Efficiency V = 0.8dc η 82.0 % O,set V =12Vdc, T =25°C V = 1.2Vdc η 84.0 % IN A O,set IO=25A , VO= VO,set VO,set = 1.5Vdc η 88.0 % VO,set = 1.8Vdc η 89.5 % VO,set = 2.5Vdc η 91.0 % V = 3.3Vdc η 92.5 % O,set V = 5.0Vdc η 94.0 % O,set Efficiency V = 0.8dc η 84.0 % O,set V =5Vdc, T =25°C V = 1.2Vdc η 88.5 % IN A O,set I =30A V = V V = 1.5Vdc η 90.0 % O , O O,set O,set VO,set = 1.8Vdc η 91.0 % VO,set = 2.5Vdc η 93.0 % V = 3.3Vdc η 95.0 % O,set Switching Frequency, Fixed All fsw  300  kHz January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 3 GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A Output Current Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit Dynamic Load Response (dIO/dt=5A/µs; VIN=VIN, nom; VO=3.3V; TA=25°C;) Load Change from Io= 0% to 50% of I ,max; No external O output capacitors Peak Deviation ATS V 350 mV pk   Settling Time (VO<10% peak deviation) ATS ts  20  µs (dI /dt=5A/µs; V =V , ; V =3.3V; T =25°C;) O IN IN nom O A Load Change from I = 50% to 0%of I , : No external O O max output capacitors Peak Deviation ATS Vpk  350  mV Settling Time (V <10% peak deviation) O ATS ts  20  µs (dIO/dt=5A/µs; VIN=VIN, nom; VO=3.3V; TA=25°C;) Load Change from Io= 0% to 50% of I ,max; No external O output capacitors Peak Deviation ATH V 320 mV pk   Settling Time (V <10% peak deviation) O ATH ts  20  µs (dI /dt=5A/µs; V =V , ; V =3.3V; T =25°C) O IN IN nom O A Load Change from IO= 50% to 0%of IO, max: No external output capacitors Peak Deviation ATH Vpk  250  mV Settling Time (V <10% peak deviation) O ATH ts  20  µs General Specifications Parameter Min Typ Max Unit Calculated MTBF (VIN= VIN, nom, IO= 0.8IO, max, TA=40°C) 3,016,040 Hours Telecordia SR 332 Issue 1: Method 1, case 3 Weight  7.4  g January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 4 GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A Output Current Feature Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information. Parameter Device Symbol Min Typ Max Unit On/Off Signal Interface (V =V to V ; open collector or equivalent, IN IN, min IN, max Signal referenced to GND) Logic High (Module OFF) Input High Current All IIH 0.5  3.3 mA Input High Voltage All VIH 3.0  VIN, max V Logic Low (Module ON) Input Low Current All IIL 200 µA   Input Low Voltage All VIL -0.3  1.2 V 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 All Tdelay ― 3 msec input power is applied (delay from instant at which V = V until Vo = 10% of Vo, set) IN IN, min All Tdelay ― 3 msec 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) All Trise ― 4 msec Output voltage Rise time (time for Vo to rise from 10% of Vo, set to 90% of Vo, set) Output voltage overshoot 3.0 % VO, set o IO = IO, max; VIN, min – VIN, max, TA = 25 C Remote Sense Range All   0.5 V Over Temperature Protection All T 125 °C ref   (See Thermal Consideration section) Sequencing Slew rate capability All dVSEQ/dt ― 2 V/msec (VIN, min to VIN, max; IO, min to IO, max VSEQ < Vo) Sequencing Delay time (Delay from VIN, min to application of voltage on SEQ pin) All TsEQ-delay 10 msec |VSEQ – Tracking Accuracy Power-up (2V/ms) All 100 200 mV Vo set| |VSEQ – Power-down (1V/ms) 200 400 mV Vo set| (VIN, min to VIN, max; IO, min - IO, max VSEQ < Vo,set) Input Undervoltage Lockout Turn-on Threshold ATH 4.3 Vdc Turn-off Threshold ATH 3.9 Vdc Turn-on Threshold ATS 5.5 Vdc Turn-off Threshold ATS 5.0 Vdc Forced Load Share Accuracy -P  10 % Io Number of units in Parallel -P 5 January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 5 GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A Output Current Characteristic Curves o The following figures provide typical characteristics for the ATS025A0X (0.8V, 25A) at 25 C. 92% 30 89% 25 86% 20 83% 0.5m/s (100 LFM) 15 80% 1.0m/s (200 LFM) 77% 10 IN V = 6.0V 1.5m/s (300 LFM) 74% VIN = 12.0V 5 71% 2.0m/s (400 LFM) IN V =14.0V 0 68% 20 30 40 50 60 70 80 90 0 5 10 15 20 25 O OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA C Figure 1. Converter Efficiency versus Output Current. Figure 4. Derating Output Current versus Local Ambient Temperature and Airflow. TIME, t (1µs/div) TIME, t (2ms/div) Figure 2. Typical output ripple and noise (VIN = VIN,NOM, Io = Figure 5. Typical Start-up Using Remote On/Off (VIN = VIN,NOM, Io,max). Io = Io,max). TIME, t (5µs /div) TIME, t (2ms/div) Figure 3. Transient Response to Dynamic Load Change from Figure 6. Typical Start-up Using Input Voltage (VIN = VIN,NOM, 0% to 50% to 0% of full load. Io = Io,max). January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 6 OUTPUT CURRENT, OUTPUT VOLTAGE OUTPUT VOLTAGE EFFICIENCY, η (%) IO (A) (10A/div) VO (V) (100mV/div) V (V) (20mV/div) O On/Off VOLTAGE OUTPUT VOLTAGE INPUT VOLTAGE OUTPUT VOLTAGE OUTPUT CURRENT, Io (A) VOn/off (V) (5V/div) VO (V) (0.5V/div) V (V) (5V/div) V (V) (0.5V/div) IN O GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A Output Current Characteristic Curves o The following figures provide typical characteristics for the ATS025A0X (1.8V, 25A) at 25 C. 96% 30 93% 25 90% 20 87% 0.5m/s (100 LFM) 84% 15 1.0m/s (200 LFM) 81% IN V = 6.0V 10 78% 1.5m/s (300 LFM) IN V = 12.0V 5 75% 2.0m/s (400 LFM) IN V =14.0V 72% 0 0 5 10 15 20 25 20 30 40 50 60 70 80 90 O OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA C Figure 7. Converter Efficiency versus Output Current. Figure 10. Derating Output Current versus Local Ambient Temperature and Airflow ((VIN = VIN,NOM). TIME, t (1µs/div) TIME, t (2ms/div) Figure 8. Typical output ripple and noise (VIN = VIN,NOM, Io = Figure 11. Typical Start-up Using Remote On/Off (VIN = Io,max). VIN,NOM, Io = Io,max). TIME, t (5µs /div) TIME, t (2ms/div) Figure 9. Transient Response to Dynamic Load Change from Figure 12. Typical Start-up Using Input Voltage (VIN = 0% to 50% to 0% of full load. VIN,NOM, Io = Io,max). January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 7 OUTPUT CURRENT, OUTPUT VOLTAGE OUTPUT VOLTAGE I (A) (5A/div) V (V) (100mV/div) EFFICIENCY, η (%) O O VO (V) (20mV/div) On/Off VOLTAGE OUTPUT VOLTAGE INPUT VOLTAGE OUTPUT VOLTAGE OUTPUT CURRENT, Io (A) VOn/off (V) (5V/div) VO (V) (0.5V/div) V (V) (5V/div) V (V) (0.5V/div) IN O GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A Output Current Characteristic Curves o The following figures provide typical characteristics for the ATS025A0X (3.3V, 25A) at 25 C. 99% 30 96% 25 93% 20 90% 0.5m/s (100 LFM) 15 87% 1.0m/s (200 LFM) 84% 10 VIN = 6.0V 1.5m/s (300 LFM) 81% IN 5 V = 12.0V 78% 2.0m/s (400 LFM) IN V =14.0V 0 75% 20 30 40 50 60 70 80 90 0 5 10 15 20 25 O OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA C Figure 13. Converter Efficiency versus Output Current. Figure 16. Derating Output Current versus Local Ambient Temperature and Airflow. TIME, t (1µs/div) TIME, t (2ms/div) Figure 14. Typical output ripple and noise (VIN = VIN,NOM, Io = Figure 17. Typical Start-up Using Remote On/Off (VIN = Io,max). VIN,NOM, Io = Io,max). TIME, t (5µs /div) TIME, t (2ms/div) Figure 15. Transient Response to Dynamic Load Change Figure 18. Typical Start-up Using Input Voltage (VIN = from 0% to 50% to 0% of full load. VIN,NOM, Io = Io,max). January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 8 OUTPUT CURRENT, OUTPUT VOLTAGE OUTPUT VOLTAGE EFFICIENCY, η (%) IO (A) (10A/div) VO (V) (100mV/div) V (V) (20mV/div) O On/Off VOLTAGE OUTPUT VOLTAGE INPUT VOLTAGE OUTPUT VOLTAGE VOn/off (V) (5V/div) VO (V) (1V/div) OUTPUT CURRENT, Io (A) V (V) (5V/div) V (V) (1V/div) IN O GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A Output Current Characteristic Curves o The following figures provide typical characteristics for the ATH030A0X (0.8V, 30A) at 25 C. 35 92% 89% 30 86% 25 83% 0.5m/s (100 LFM) 20 80% 1.0m/s (200 LFM) 77% 15 IN V = 4.5V 1.5m/s (300 LFM) 74% IN V = 5.0V 10 71% 2.0m/s (400 LFM) IN V =5.5V 5 68% 20 30 40 50 60 70 80 90 0 6 12 18 24 30 O OUTPUT CURREN T, IO (A) AMBIENT TEMPERATURE, TA C Figure 19. Converter Efficiency versus Output Current. Figure 22. Derating Output Current versus Local Ambient Temperature and Airflow. TIME, t (2ms/div) TIME, t (1µs/div) Figure 20. Typical output ripple and noise (VIN = VIN,NOM, Io = Figure 23. Typical Start-up Using Remote On/Off (VIN = Io,max). VIN,NOM, Io = Io,max). TIME, t (10µs /div) TIME, t (2ms/div) Figure 21. Transient Response to Dynamic Load Change Figure 24. Typical Start-up Using Input Voltage (VIN = VIN,NOM, from 0% to 50% to 0% of full load. Io = Io,max). January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 9 OUTPUT CURRENT, OUTPUT VOLTAGE OUTPUT VOLTAGE I (A) (10A/div) V (V) (100mV/div) EFFICIENCY, η (%) O O VO (V) (20mV/div) On/Off VOLTAGE OUTPUT VOLTAGE INPUT VOLTAGE OUTPUT VOLTAGE VOn/off (V) (2V/div) VO (V) (0.5V/div) OUTPUT CURRENT, Io (A) V (V) (2V/div) V (V) (0.5V/div) IN O GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A Output Current Characteristic Curves o The following figures provide typical characteristics for the ATH030A0X (1.8V, 30A) at 25 C. 96% 35 93% 30 90% 25 87% 0.5m/s (100 LFM) 84% 20 1.0m/s (200 LFM) 81% IN V = 4.5V 15 78% 1.5m/s (300 LFM) IN V = 5.0V 10 75% 2.0m/s (400 LFM) IN V =5.5V 72% 5 0 6 12 18 24 30 20 30 40 50 60 70 80 90 O OUTPUT CURREN T, IO (A) AMBIENT TEMPERATURE, TA C Figure 25. Converter Efficiency versus Output Current. Figure 28. Derating Output Current versus Local Ambient Temperature and Airflow. TIME, t (1µs/div) TIME, t (2ms/div) Figure 26. Typical output ripple and noise (VIN = VIN,NOM, Io = Figure 29. Typical Start-up Using Remote On/Off (VIN = Io,max). VIN,NOM, Io = Io,max). TIME, t (10µs /div) TIME, t (2ms/div) Figure 27. Transient Response to Dynamic Load Change Figure 30. Typical Start-up Using Input Voltage (VIN = VIN,NOM, from 0% to 50% to 0% of full load. Io = Io,max). January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 10 OUTPUT CURRENT, OUTPUT VOLTAGE OUTPUT VOLTAGE I (A) (10A/div) V (V) (100mV/div) EFFICIENCY, η (%) O O VO (V) (20mV/div) On/Off VOLTAGE OUTPUT VOLTAGE V On/off INPUT VOLTAGE OUTPUT VOLTAGE (V) (2V/div) V (V) (0.5V/div) O OUTPUT CURRENT, Io (A) V (V) (2V/div) V (V) (0.5V/div) IN O GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A Output Current Characteristic Curves o The following figures provide typical characteristics for the ATH030A0X (3.3V, 30A) at 25 C. 99% 35 96% 30 93% 25 90% 0.5m/s (100 LFM) 20 87% 1.0m/s (200 LFM) 84% 15 IN V = 4.5V 1.5m/s (300 LFM) 81% IN V = 5.0V 10 78% 2.0m/s (400 LFM) IN V =5.5V 5 75% 20 30 40 50 60 70 80 90 0 6 12 18 24 30 O OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA C Figure 31. Converter Efficiency versus Output Current. Figure 34. Derating Output Current versus Local Ambient Temperature and Airflow. TIME, t (1µs/div) TIME, t (2ms/div) Figure 32. Typical output ripple and noise (VIN = VIN,NOM, Io = Figure 35. Typical Start-up Using Remote On/Off (VIN = Io,max). VIN,NOM, Io = Io,max). TIME, t (10µs /div) TIME, t (2ms/div) Figure 33. Transient Response to Dynamic Load Change Figure 36. Typical Start-up Using Input Voltage (VIN = VIN,NOM, from 0% to 50% to 0% of full load. Io = Io,max). January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 11 OUTPUT CURRENT, OUTPUT VOLTAGE OUTPUT VOLTAGE I (A) (10A/div) V (V) (100mV/div) EFFICIENCY, η (%) O O VO (V) (20mV/div) On/Off VOLTAGE OUTPUT VOLTAGE INPUT VOLTAGE OUTPUT VOLTAGE V (V) (2V/div) V (V) (1V/div) OUTPUT CURRENT, Io (A) On/off O VIN (V) (2V/div) VO (V) (1V/div) GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A Output Current Test Configurations Design Considerations TM The Austin MegaLynx module should be connected to a low- impedance source. A highly inductive source can affect the CURRENT PROBE TO OSCILLOSCOPE stability of the module. An input capacitance must be placed directly adjacent to the input pin of the module, to minimize L TEST V (+) IN input ripple voltage and ensure module stability. 1μH To minimize input voltage ripple, low-ESR ceramic capacitors CIN are recommended at the input of the module. Figure 41 shows C 220μF S Min the input ripple voltage for various output voltages at 25A of E.S.R.<0.1Ω 150μF @ 20°C 100kHz load current with 2x22 µF or 4x22 µF ceramic capacitors and an input of 12V. Figure 42 shows data for the 5Vin case, with COM 2x47µF and 4x47µF of ceramic capacitors at the input, and for a load current of 30A. NOTE: Measure input reflected ripple current with a simulated source inductance (LTEST) of 1μH. Capacitor CS offsets 180 possible battery impedance. Measure current as shown above. 2 x 22uF 160 4 x 22uF 140 Figure 37. Input Reflected Ripple Current Test Setup. 120 100 COPPER STRIP 80 60 V O (+) RESISTIVE LOAD 40 SCOPE 20 GND 0 0.01uF 0.1uF 10uF 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 GROUND PLANE NOTE: All voltage measurements to be taken at the module Output Voltage (Vdc) terminals, as shown above. If sockets are used then Kelvin connections are required at the module terminals Figure 41. Input ripple voltage for various output voltages to avoid measurement errors due to socket contact with 2x22 µF or 4x22 µF ceramic capacitors at the input (25A resistance. load). Input voltage is 12V. Figure 38. Output Ripple and Noise Test Setup. 60 2 x 47uF 50 R R R R distribution contact contact distribution 4 x 47uF V (+) V IN O 40 R LOAD 30 V VIN O 20 Rdistribution Rcontact Rcontact Rdistribution COM COM 10 NOTE: All voltage measurements to be taken at the module 0 terminals, as shown above. If sockets are used then Kelvin connections are required at the module terminals 0.5 1 1.5 2 2.5 3 3.5 to avoid measurement errors due to socket contact resistance. Output Voltage (Vdc) Figure 40. Output Voltage and Efficiency Test Setup. Figure 42. Input ripple voltage in mV, p-p for various output voltages with 2x47 µF or 4x47 µF ceramic capacitors at the V . I O O input (25A load). Input voltage is 5V. Efficiency η = x 100 % V . I IN IN January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 12 BATTERY Input Ripple Voltage (mVp-p) Input Ripple Voltage (mVp-p) GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A Output Current The On/Off pin can also be used to synchronize the output Safety Considerations voltage start-up and shutdown of multiple modules in parallel. For safety agency approval the power module must be By connecting together the On/Off pins of multiple modules, installed in compliance with the spacing and separation the output start-up can be synchronized (please refer to requirements of the end-use safety agency standards, i.e., UL characterization curves). When On/Off pins are connected 60950, CSA C22.2 No. 60950-00, EN60950 (VDE 0850) together, all modules will shut down if any one of the modules rd (IEC60950, 3 edition) Licensed. gets disabled due to undervoltage lockout or over temperature protection. For the converter output to be considered meeting the requirements of safety extra-low voltage (SELV), the input must Remote Sense meet SELV requirements. The power module has extra-low The Austin MegaLynx SIP power modules have a remote sense voltage (ELV) outputs when all inputs are ELV. feature to minimize the effects of distribution losses by regulating the voltage at the remote sense pin (See Figure 44). The voltage between the Sense pin and the Vo pin must not Feature Descriptions exceed 0.5V. Remote On/Off The amount of power delivered by the module is defined as the The Austin MegaLynx power modules feature a On/Off pin for output voltage multiplied by the output current (Vo x Io). When remote On/Off operation. If not using the On/Off pin, connect using Remote Sense, the output voltage of the module can the pin to ground (the module will be ON). The On/Off signal increase, which if the same output is maintained, increases the (Von/off) is referenced to ground. Circuit configuration for remote power output from the module. Make sure that the maximum On/Off operation of the module using the On/Off pin is shown output power of the module remains at or below the maximum in Figure 43. rated power. When the Remote Sense feature is not being used, connect the Remote Sense pin to output of the module. During a Logic High on the On/Off pin (transistor Q1 is OFF), the module remains OFF. The external resistor R1 should be chosen to maintain 3.0V minimum on the On/Off pin to ensure that the Rdistribution Rcontact Rcontact Rdistribution module is OFF when transistor Q1 is in the OFF state. Suitable VIN(+) VO values for R1 are 4.7K for input voltage of 12V and 3K for 5Vin. Sense During Logic-Low when Q1 is turned ON, the module is turned ON. R LOAD VIN+ MODULE Rdistribution Rcontact Rcontact Rdistribution COM COM R1 Thermal SD Figure 44. Effective Circuit Configuration for Remote Sense operation. I ON/OFF 1K PWM Enable ON/OFF + V ON/OFF Over Current Protection 100K Q1 To provide protection in a fault (output overload) condition, the unit is equipped with internal current-limiting circuitry and can 10K endure current limiting continuously. At the point of GND _ current-limit inception, the unit enters hiccup mode. The unit operates normally once the output current is brought back into Figure 43. Remote On/Off Implementation using ON/OFF. its specified range. The average output current during hiccup is 20% IO, max. Over Temperature Protection To provide protection in a fault condition, the unit is equipped with a thermal shutdown circuit. The unit will shutdown if the o overtemperature threshold of 130 C is exceeded at the thermal reference point T . The thermal shutdown is not intended as a ref 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. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 13 GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A Output Current Input Under Voltage Lockout Table 1 At input voltages below the input undervoltage lockout limit, VO, set (V) Rtrim (Ω) the module operation is disabled. The module will begin to operate at an input voltage above the undervoltage lockout 0.8 Open turn-on threshold. 1.0 5900 1.2 2900 Output Voltage Programming 1.5 1614 The output voltage of the Austin MegaLynx can be 1.8 1100 programmed to any voltage from 0.8dc to 5.0Vdc by 2.5 606 connecting a resistor (shown as Rtrim in Figure 45) between 3.3 380 Trim and GND pins of the module. Without an external resistor 5.0 186 between Trim and GND pins, the output of the module will be 0.8Vdc. To calculate the value of the trim resistor, Rtrim for a Voltage Margining desired output voltage, use the following equation: Output voltage margining can be implemented in the Austin  1200  MegaLynx modules by connecting a resistor, R , from the margin-up Rtrim= −100Ω   Vo− 0.80 Trim pin to the ground pin for margining-up the output voltage   and by connecting a resistor, R , from the Trim pin to margin-down Rtrim is the external resistor in Ω output pin for margining-down. Figure 46 shows the circuit configuration for output voltage margining. The POL Vo is the desired output voltage Programming Tool, available at www.gecriticalpower.com By using a ±0.5% tolerance trim resistor with a TC of ±100ppm, under the Design Tools section, also calculates the values of a set point tolerance of ±1.5% can be achieved as specified in Rmargin-up and Rmargin-down for a specific output voltage and % the electrical specification. Table 1 provides Rtrim values margin. Please consult your local GE technical representative required for some common output voltages. The POL for additional details. Programming Tool, available at www.gecriticalpower.com Voltage Sequencing under the Design Tools section, helps determine the required external trim resistor needed for a specific output voltage. The Austin MegaLynx series of modules include a sequencing feature that enables users to implement various types of output voltage sequencing in their applications. This is V (+) V (+) IN O accomplished via an additional sequencing pin. When not using the sequencing feature, either leave the SEQ pin unconnected or tied to VIN. Vo LOAD ON/OFF TRIM Rmargin-down Rtrim Austin Lynx or GND Lynx II Series Q2 Figure 45. Circuit configuration to program output voltage Trim using an external resistor. Rmargin-up Rtrim Q1 GND Figure 46. Circuit Configuration for margining Output voltage. 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 January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 14 GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A Output Current delay of 10msec minimum is required before applying voltage • All modules should be turned on and off together. This is on the SEQ pin. During this delay time, the SEQ pin should be so that all modules come up at the same time avoiding the kept at a voltage of 50mV (± 20 mV). After the 10msec delay, problem of one converter sourcing current into the other the voltage applied to the SEQ pin is allowed to vary and the leading to an overcurrent trip condition. To ensure that all output voltage of the module will track this voltage on a one- modules come up simultaneously, the on/off pins of all to-one volt basis until the output reaches the set-point voltage. paralleled converters should be tied together and the To initiate simultaneous shutdown of the modules, the converters enabled and disabled using the on/off pin. sequence pin voltage is lowered in a controlled manner. The • The share bus is not designed for redundant operation and output voltages of the modules track the sequence pin voltage the system will be non-functional upon failure of one of when it falls below their set-point voltages. A valid input voltage the unit when multiple units are in parallel. In particular, if must be maintained until the tracking and output voltages one of the converters shuts down during operation, the reach zero to ensure a controlled shutdown of the modules. For other converters may also shut down due to their outputs a more detailed description of sequencing, please refer to hitting current limit. In such a situation, unless a Application Note AN04-008 titled “Guidelines for Sequencing coordinated restart is ensured, the system may never of Multiple Modules”. properly restart since different converters will try to restart at different times causing an overload condition and TM subsequent shutdown. This situation can be avoided by When using the EZ-SEQUENCE feature to control start-up of having an external output voltage monitor circuit that the module, pre-bias immunity feature during start-up is detects a shutdown condition and forces all converters to disabled. The pre-bias immunity feature of the module relies shut down and restart together. on the module being in the diode-mode during start-up. When TM using the EZ-SEQUENCE feature, modules goes through an internal set-up time of 10msec, and will be in synchronous rectification mode when voltage at the SEQ pin is applied. This will result in sinking current in the module if pre-bias voltage is present at the output of the module. When pre-bias immunity TM during start-up is required, the EZ-SEQUENCE feature must be disabled. Active Load Sharing (-P Option) For additional power requirements, the Austin MegaLynx series power module is also available with a parallel option. Up to five modules can be configured, in parallel, with active load sharing. Good layout techniques should be observed when using multiple units in parallel. To implement forced load sharing, the following connections should be made: • The share pins of all units in parallel must be connected together. The path of these connections should be as direct as possible. • All remote-sense pins should be connected to the power bus at the same point, i.e., connect all the SENSE(+) pins to the (+) side of the bus. Close proximity and directness are necessary for good noise immunity Some special considerations apply for design of converters in parallel operation: • When sizing the number of modules required for parallel operation, take note of the fact that current sharing has some tolerance. In addition, under transient condtions such as a dynamic load change and during startup, all converter output currents will not be equal. To allow for such variation and avoid the likelihood of a converter shutting off due to a current overload, the total capacity of the paralleled system should be no more than 75% of the sum of the individual converters. As an example, for a system of four ATS030A0X3-SR converters the parallel, the total current drawn should be less that 75% of (4 x 30A) , i.e. less than 90A. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 15 GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A 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 47. Note that the airflow is Back View parallel to the long axis of the module as shown in Figure 48. The derating data applies to airflow in either direction of the module’s long axis. Figure 48. T Temperature measurement location. ref The thermal reference point, Tref used in the specifications is shown in Figure 48. For reliable operation this temperature o should not exceed 125 C. 25.4_ Wind Tunnel (1.0) 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 PWBs Power Module Process For Open-Frame Board-Mounted Power Modules” for a detailed discussion of thermal aspects including maximum device temperatures. 76.2_ (3.0) x Probe Location for measuring 12.7_ airflow and (0.50) ambient temperature Air flow Figure 47. Thermal Test Set-up. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 16 GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A Output Current Mechanical Outline of Module 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) BACK SIDE VIEW Pin out Pin Function 1 Vo 2 Vo 3 Sense+ 4 Vo 5 GND 6 GND* 7 Share** 8 GND 9 VIN 10 VIN 11 SEQ 12 Trim 13 On/Off Pin 6 is added in ATH030A0X3 version ** Pin 7 is paralleling option January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 17 GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A 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) January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 18 GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A Output Current Through-Hole Lead-Free Soldering Information The RoHS-compliant through-hole products use the SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant components. They are designed to be processed through single or dual wave soldering machines. The pins have an RoHS-compliant finish that is compatible with both Pb and Pb-free wave soldering processes. A maximum preheat rate of 3°C/s is suggested. The wave preheat process should be such that the temperature of the power module board is kept below 210°C. For Pb solder, the recommended pot temperature is 260°C, while the Pb-free solder pot is 270°C max. Not all RoHS-compliant through-hole products can be processed with paste-through-hole Pb or Pb- free reflow process. If additional information is needed, please consult with your GE technical representative for more details. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 19 GE Preliminary Data Sheet TM Austin MegaLynx : Non-Isolated DC-DC Power Modules 4.5Vdc – 5.5Vdc input; 0.8Vdc to 3.63Vdc output; 30A Output Current 6Vdc – 14Vdc input; 0.8Vdc to 3.63Vdc output; 25A Output Current Ordering Information Please contact your GE Sales Representative for pricing, availability and optional features. Table 2. Device Codes Output On/Off Connector Input Voltage Output Voltage Product codes Comcodes Current Logic Type 4.5 – 5.5Vdc 0.8 – 3.63Vdc 25A Negative SIP ATH025A0X3 108991980 4.5 – 5.5Vdc 0.8 – 3.63Vdc 25A Negative SIP ATH025A0X3Z CC109104774 4.5 – 5.5Vdc 0.8 – 3.63Vdc 30A Negative SIP ATH030A0X3 108992005 4.5 – 5.5Vdc 0.8 – 3.63Vdc 30A Negative SIP ATH030A0X3Z CC109104782 4.5 – 5.5Vdc 0.8 – 3.63Vdc 30A Negative SIP ATH030A0X3-P 108993358 4.5 – 5.5Vdc 0.8 – 3.63Vdc 30A Negative SIP ATH030A0X3-PZ CC109104790 6.0 – 14Vdc 0.8– 5.5Vdc 25A Negative SIP ATS025A0X3 108991997 6.0 – 14Vdc 0.8– 5.5Vdc 25A Negative SIP ATS025A0X3Z CC109104808 6.0 – 14Vdc 0.8– 5.5Vdc 25A Negative SIP ATS025A0X53 108997210 6.0 – 14Vdc 0.8– 5.5Vdc 25A Negative SIP ATS025A0X3-P 108993341 6.0 – 14Vdc 0.8– 5.5Vdc 25A Negative SIP ATS025A0X3-PZ CC109104816 6.0 – 14Vdc 0.8– 5.5Vdc 25A Negative SIP ATS025A0X53-PZ CC109107752 6.0 – 14Vdc 0.8– 5.5Vdc 25A Negative SIP ATS025A0X3-34Z* CC109147897 * Special part, consult factory before ordering Table 3. Device Options Option Device Code Suffix Long pins 5.08mm ± 0.25m (0.2 in. ± 0.010 in.) -5 Paralleling with active current sharing -P RoHS Compliant -Z 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. January 20, 2016 ©2016 General Electric Company. All International rights reserved. Version 1.08