Data Sheet GE TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Module,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output ` Features RoHS Compliant  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 10A of output current  High efficiency – 93% at 3.3V full load (V = 12.0V) IN  Small size and low profile: 33.00 mm x 13.46 mm x 8.28 mm (1.300 in x 0.530 in x 0.326 in)  Low output ripple and noise  High Reliability: Applications o Calculated MTBF = 4.4 M hours at 25 C Full-load  Distributed power architectures  Output voltage programmable from 0.75 Vdc to 5.5 Vdc  Intermediate bus voltage applications via external resistor  Telecommunications equipment  Line Regulation: 0.3% (typical)  Servers and storage applications  Load Regulation: 0.4% (typical)  Temperature Regulation: 0.4% (typical)  Networking equipment  Remote On/Off  Remote Sense  Output overcurrent protection (non-latching)  Overtemperature protection  Wide operating temperature range (-40°C to 85°C) †  UL* 60950-1Recognized, CSA C22.2 No. 60950-1-03 ‡ Certified, and VDE 0805:2001-12 (EN60950-1) Licensed  ISO** 9001 and ISO 14001 certified manufacturing facilities Description TM The 12V Austin Lynx Programmable SMT (surface mount technology) power modules are non-isolated DC-DC converters that can deliver up to 10A of output current with full load efficiency of 93% at 3.3V output. These modules provide a precisely regulated output voltage programmable via an external resistor from 0.75Vdc to 5.5Vdc over a wide range of input voltage (VIN = 10 – 14Vdc). Their open-frame construction and small footprint enable designers to develop cost- and space-efficient solutions. Standard features include remote On/Off, remote sense, output voltage adjustment, overcurrent and overtemperature protection. * 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 October 7, 2015 ©2013 General Electric Company. All rights reserved. GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the device reliability. Parameter Device Symbol Min Max Unit Input Voltage All V -0.3 15 Vdc IN Continuous Operating Ambient Temperature All TA -40 85 °C (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 All V 10 12.0 14.0 Vdc IN Maximum Input Current All I 6.5 Adc IN,max (V = V to V , I =I V = 3.3Vdc) IN IN, min IN, max O O, max O,set Input No Load Current VO,set = 0.75 Vdc IIN,No load 40 mA (VIN = 12.0Vdc, IO = 0, module enabled) VO,set = 3.3Vdc IIN,No load 100 mA Input Stand-by Current All I 2.0 mA IN,stand-by (VIN = 12.0Vdc, module disabled) 2 2 Inrush Transient All I t 0.4 A s Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1μH source impedance; VIN, min to VIN, All 20 mAp-p I = I ; See Test configuration section) max, O Omax Input Ripple Rejection (120Hz) All 30 dB 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 being part of a complex 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 15 A (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. October 7, 2015 ©2013 General Electric Company. All rights reserved. Page 2 GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit Output Voltage Set-point All VO, set –2.0  +2.0 % VO, set (V = , I =I , T =25°C) IN IN, min O O, max A Output Voltage All VO, set –2.5%  +3.5% % VO, set (Over all operating input voltage, resistive load, and temperature conditions until end of life) Adjustment Range All V 0.7525 5.5 % V O O, set Selected by an external resistor Output Regulation Line (VIN=VIN, min to VIN, max) All  0.3 % VO, set Load (IO=IO, min to IO, max) All  0.4 % VO, set Temperature (Tref=TA, min to TA, max) All  0.4 % VO, set Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max Cout = 1μF ceramic//10μFtantalum capacitors) RMS (5Hz to 20MHz bandwidth) All 12 15 mV  rms Peak-to-Peak (5Hz to 20MHz bandwidth) All 30 50 mV  pk-pk External Capacitance ESR ≥ 1 mΩ All C 1000 μF O, max   ESR ≥ 10 mΩ All C 5000 μF O, max   Output Current All I 0 10 Adc o  Output Current Limit Inception (Hiccup Mode ) All I 200 % I O, lim   o Output Short-Circuit Current All IO, s/c  3  Adc (VO≤250mV) ( Hiccup Mode ) Efficiency VO, set = 0.75Vdc η 81.0 % VIN= VIN, nom, TA=25°C VO, set = 1.2Vdc η 87.5 % IO=IO, max , VO= VO,set VO,set = 1.5Vdc η 89.0 % VO,set = 1.8Vdc η 90.0 % VO,set = 2.5Vdc η 92.0 % VO,set = 3.3Vdc η 93.0 % VO,set = 5.0Vdc η 95.0 % Switching Frequency All fsw  300  kHz Dynamic Load Response (dIo/dt=2.5A/µs; VIN = VIN, nom; TA=25°C) All Vpk  200  mV Load Change from Io= 50% to 100% of Io,max; 1μF ceramic// 10 μF tantalum Peak Deviation Settling Time (Vo<10% peak deviation) All ts  25  µs (dIo/dt=2.5A/µs; V = V ; T =25°C) All Vpk  200  mV IN IN, nom A Load Change from Io= 100% to 50%of Io,max: 1μF ceramic// 10 μF tantalum Peak Deviation Settling Time (Vo<10% peak deviation) All ts  25  µs October 7, 2015 ©2013 General Electric Company. All rights reserved. Page 3 GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit Dynamic Load Response (dIo/dt=2.5A/µs; V V = V ; T =25°C) All Vpk  100  mV IN IN, nom A Load Change from Io= 50% to 100% of Io,max; Co = 2x150 μF polymer capacitors Peak Deviation Settling Time (Vo<10% peak deviation) All t  25  µs s (dIo/dt=2.5A/µs; V = V ; T =25°C) All V  100  mV IN IN, nom A pk Load Change from Io= 100% to 50%of Io,max: Co = 2x150 μF polymer capacitors Peak Deviation Settling Time (Vo<10% peak deviation) All ts  25  µs General Specifications Parameter Min Typ Max Unit Calculated MTBF (I =I , T =25°C) 4,400,000 Hours O O, max A Weight  5.6 (0.2)  g (oz.) October 7, 2015 ©2013 General Electric Company. All rights reserved. Page 4 GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Feature Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information. Parameter Device Symbol Min Typ Max Unit Remote On/Off Signal interface (V =V to V ; Open collector npn or equivalent IN IN, min IN, max Compatible, Von/off signal referenced to GND See feature description section) Logic High (On/Off Voltage pin open - Module ON) Von/Off All VIH ― ― V V IN Ion/Off All IIH ― ― 10 μA Logic Low (Von/Off ≤ 0.3V – Module Off) Von/Off All VIL ― ― 0.3 V Ion/off All IIL ― ― 1 mA Turn-On Delay and Rise Times o (IO=IO, max , VIN = VIN, nom, TA = 25 C, ) All Tdelay 3 msec Case 1: On/Off input is set to Logic Low (Module ON) and then 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 set to logic Low (delay from instant at which Von/Off=0.3V until Vo=10% of Vo, set) All Trise ― 4 6 msec Output voltage Rise time (time for Vo to rise from 10% of Vo,set to 90% of Vo, set) 1 Output voltage overshoot – Startup ― % VO, set o IO= IO, max; VIN = 10.0 to 14Vdc, TA = 25 C Remote Sense Range All ― ― 0.5 V Overtemperature Protection All T 125 °C ref   (See Thermal Consideration section) Input Undervoltage Lockout Turn-on Threshold All  8.2  V Turn-off Threshold All  8.0  V October 7, 2015 ©2013 General Electric Company. All rights reserved. Page 5 GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Characteristic Curves The following figures provide typical characteristics for the 12V Austin Lynx Programmable SMT modules at 25ºC. 90 94 88 92 86 90 84 88 82 86 80 84 78 82 76 80 Vin=14V Vin=14V 74 78 Vin=12V Vin=12V 72 76 Vin=10V Vin=10V 70 74 0 2 4 6 8 10 0 2 4 6 8 10 OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A) Figure 1. Converter Efficiency versus Output Current (Vout Figure 4. Converter Efficiency versus Output Current (Vout = =1.2Vdc). 2.5Vdc). 92 95 90 93 88 91 86 89 84 87 Vin=14V 82 85 Vin=12V 80 83 Vin=14V Vin=10V 78 81 Vin=12V 76 79 Vin=10V 74 77 0 2 4 6 8 10 0 2 4 6 8 10 OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A) Figure 2. Converter Efficiency versus Output Current (Vout = Figure 5. Converter Efficiency versus Output Current (Vout = 1.5Vdc). 3.3Vdc). 92 96 94 90 92 88 90 86 Vin=14V 88 84 Vin=12V 86 Vin=10V 82 84 Vin=14V 80 82 Vin=12V 78 80 Vin=10V 76 78 0 2 4 6 8 10 0 2 4 6 8 10 OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A) Figure3. Converter Efficiency versus Output Current (Vout = Figure 6. Converter Efficiency versus Output Current (Vout = 1.8Vdc). 5.0Vdc). GE 6 EFFICIENCY, η (%) EFFICIENCY, η (%) EFFICIENCY, η (%) EFFICIENCY, η (%) EFFICIENCY, η (%) EFFICIENCY, η (%) GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Characteristic Curves (continued) The following figures provide typical characteristics for the 12V Austin Lynx Programmable SMT modules at 25ºC. 6 Io = 10A 5 Io=5A 4 Io=0A 3 2 1 0 7 8 9 10 11 12 13 14 INPUT VOLTAGE, V (V) IN TIME, t (5 µs/div) Figure 7 . Input voltage vs. Input Current Figure 10. Transient Response to Dynamic Load Change from 50% to 100% of full load (Vo = 3.3Vdc). (Vout = 3.3Vdc). TIME, t (2µs/div) TIME, t (5 µs/div) Figure 8. Typical Output Ripple and Noise Figure 11. Transient Response to Dynamic Load Change from 100% to 50% of full load (Vo = 3.3 Vdc). (Vin = 12.0V dc, Vo = 2.5 Vdc, Io=10A). TIME, t (2µs/div) TIME, t (10µs/div) Figure 9. Typical Output Ripple and Noise Figure 12. Transient Response to Dynamic Load Change from 50% to 100% of full load (Vo = 3.3 Vdc, Cext = 2x150 μF (Vin = 12.0V dc, Vo = 5.0 Vdc, Io=10A). Polymer Capacitors). October 7, 2015 ©2013 General Electric Company. All rights reserved. Page 7 OUTPUT VOLTAGE OUTPUT VOLTAGE INPUT CURRENT, I (A) VO (V) (20mV/div) VO (V) (20mV/div) IN OUTPUT CURRENT, OUTPUT VOLTAGE OUTPUT CURRENT, OUTPUT VOLTAGE OUTPUT CURRENT, OUTPUT VOLTAGE IO (A) (2A/div) VO (V) (100mV/div) IO (A) (2A/div) VO (V) (200mV/div) IO (A) (2A/div) VO (V) (200mV/div) GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Characteristic Curves (continued) The following figures provide typical characteristics for the 12V Austin Lynx Programmable SMT modules at 25ºC. TIME, t (10µs/div) TIME, t (2 ms/div) Figure 13. Transient Response to Dynamic Load Change Figure 16. Typical Start-Up with application of Vin with low- from 100% of 50% full load (Vo = 5.0 Vdc, Cext = 2x150 μF ESR polymer capacitors at the output (7x150 μF) (Vin = 12Vdc, Polymer Capacitors). Vo = 5.0Vdc, Io = 10A, Co = 1050 μF). TIME, t (1 ms/div) TIME, t (2 ms/div) Figure 14. Typical Start-Up Using Remote On/Off (Vin = Figure 17 Typical Start-Up Using Remote On/Off with Prebias 12.0Vdc, Vo = 5.0Vdc, Io = 10.0A). (Vin = 12.0Vdc, Vo = 2.5Vdc, Io = 1.0A, Vbias =1.2Vdc). TIME, t (1 ms/div) TIME, t (10ms/div) Figure 15. Typical Start-Up Using Remote On/Off with Low- Figure 18. Output short circuit Current (Vin = 12.0Vdc, Vo = 0.75Vdc). ESR external capacitors (Co= 5000µF) (Vin = 12.0Vdc, Vo = 5.0Vdc, Io = 10.0A, Co = 1050µF). October 7, 2015 ©2013 General Electric Company. All rights reserved. Page 8 OUTPUT VOLTAGE On/Off VOLTAGE OUTPUT VOLTAGE On/Off VOLTAGE OUTPUT CURRENT, OUTPUTVOLTAGE VO (1V/div) VOn/off (V) (5V/div) VOV) (1V/div) VOn/off (V) (5V/div) IO (A) (2A/div) VO (V) (100mV/div) OUTPUT CURRENT, OUTPUT VOLTAGE On/Off VOLTAGE OUTPUT VOLTAGE INPUT VOLTAGE I (A) (10A/div) V V) (1V/div) V (V) (2V/div) V (V) (2V/div) V (V) (5V/div) O O On/off o IN GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Characteristic Curves (continued) The following figures provide thermal derating curves for the 12V Austin Lynx Programmable SMT modules. 11 11 10 10 9 9 8 8 7 7 6 6 NC NC 5 5 100 LFM 100 LFM 4 4 200 LFM 200 LFM 3 3 300 LFM 300 LFM 2 2 400 LFM 400 LFM 1 1 0 0 20 30 40 50 60 70 80 90 20 30 40 50 60 70 80 90 O O AMBIENT TEMPERATURE, TA C AMBIENT TEMPERATURE, TA C Figure 19. Derating Output Current versus Local Ambient Figure 22. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 12.0 Vdc, Vo=0.75Vdc). Temperature and Airflow (Vin = 12.0 Vdc, Vo=5.0 Vdc). 11 10 9 8 7 6 NC 5 100 LFM 4 200 LFM 3 300 LFM 2 400 LFM 1 0 20 30 40 50 60 70 80 90 O AMBIENT TEMPERATURE, TA C Figure 20. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 12.0Vdc, Vo=1.8 Vdc). 11 10 9 8 7 6 NC 5 100 LFM 4 200 LFM 3 300 LFM 2 400 LFM 1 0 20 30 40 50 60 70 80 90 O AMBIENT TEMPERATURE, T C A Figure 21. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 12.0Vdc, Vo=3.3 Vdc). October 7, 2015 ©2013 General Electric Company. All rights reserved. Page 9 OUTPUT CURRENT, Io (A) OUTPUT CURRENT, Io (A) OUTPUT CURRENT, Io (A) OUTPUT CURRENT, Io (A) GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Test Configurations Design Considerations Input Filtering CURRENT PROBE TO OSCILLOSCOPE The 12V Austin Lynx Programmable SMT module should be L TEST connected to a low ac-impedance source. A highly inductive V (+) IN 1μH source can affect the stability of the module. An input capacitance must be placed directly adjacent to the input pin C of the module, to minimize input ripple voltage and ensure IN CS 1000μF Electrolytic module stability. 2x100μF E.S.R.<0.1Ω Tantalum @ 20°C 100kHz COM In a typical application, 4x47 µF low-ESR tantalum capacitors (AVX part #: TPSE476M025R0100, 47µF 25V 100 mΩ ESR tantalum capacitor) will be sufficient to provide adequate ripple NOTE: Measure input reflected ripple current with a simulated source inductance (L ) of 1μH. Capacitor C offsets TEST S voltage at the input of the module. To minimize ripple voltage possible battery impedance. Measure current as shown at the input, low ESR ceramic capacitors are recommended at above. the input of the module. Figure 26 shows input ripple voltage Figure 23. Input Reflected Ripple Current Test Setup. (mVp-p) for various outputs with 4x47 µF tantalum capacitors and with 4x22 µF ceramic capacitor (TDK part #: C4532X5R1C226M) at full load. COPPER STRIP 300 V (+) RESISTIVE O LOAD 250 1uF . 10uF SCOPE COM 200 150 GROUND PLANE NOTE: All voltage measurements to be taken at the module terminals, as shown above. If sockets are used then 100 Kelvin connections are required at the module terminals to avoid measurement errors due to socket contact Tantalum resistance. 50 Figure 24. Output Ripple and Noise Test Setup. Ceramic 0 0 1 2 3 4 5 6 Rdistribution Rcontact Rcontact Rdistribution Output Voltage (Vdc) V (+) V IN O Figure 26. Input ripple voltage for various output with 4x22 µF polymer and 4x47 µF ceramic capacitors at the input (full R LOAD load). V V IN O R R R R distribution contact contact distribution COM 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 25. Output Voltage and Efficiency Test Setup. V . I O O Efficiency = x 100 % η V . I IN IN October 7, 2015 ©2013 General Electric Company. All rights reserved. Page 10 BATTERY Input Ripple Voltage (mVp-p) GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Design Considerations (continued) Safety Considerations For safety agency approval the power module must be Output Filtering installed in compliance with the spacing and separation The 12V Austin Lynx Programmable SMT module is designed for requirements of the end-use safety agency standards, i.e., UL low output ripple voltage and will meet the maximum output 60950-1, CSA C22.2 No. 60950-1-03, and VDE 0850:2001-12 ripple specification with 1 µF ceramic and 10 µF tantalum (EN60950-1) Licensed. capacitors at the output of the module. However, additional output filtering may be required by the system designer for a For the converter output to be considered meeting the number of reasons. First, there may be a need to further reduce requirements of safety extra-low voltage (SELV), the input must the output ripple and noise of the module. Second, the dynamic meet SELV requirements. The power module has extra-low response characteristics may need to be customized to a voltage (ELV) outputs when all inputs are ELV. particular load step change. The input to these units is to be provided with a fast-acting fuse with a maximum rating of 15A in the positive input lead. 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. For stable operation of the module, limit the capacitance to less than the maximum output capacitance as specified in the electrical specification table. October 7, 2015 ©2013 General Electric Company. All rights reserved. Page 11 GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current beyond its rating. The module will automatically restart after it Feature Description cools down. Remote On/Off The 12V Austin Lynx Programmable SMT power modules Output Voltage Programming feature an On/Off pin for remote On/Off operation. If not using the remote On/Off pin, leave the pin open (module will be On). The output voltage of the 12V Austin Lynx Programmable SMT The On/Off pin signal (Von/Off) is referenced to ground. To module can be programmed to any voltage from 0.75Vdc to switch the module on and off using remote On/Off, connect an 5.5Vdc by connecting a resistor (shown as Rtrim in Figure 28) open collector npn transistor between the On/Off pin and the between Trim and GND pins of the module. Without an ground pin (See Figure 27). external resistor between Trim and GND pins, the output of the module will be 0.7525Vdc. To calculate the value of the trim resistor, Rtrim for a desired output voltage, use the following During a logic-high (On/Off pin is pulled high internal to the equation: module) when the transistor is in the Off state, the power module is ON. The maximum allowable leakage current of the 10500   Rtrim= −1000Ω transistor when Von/off = VIN,max is 10µA. During a logic-low   Vo− 0.7525   when the transistor is turned-on, the power module is OFF. During this state VOn/Off is less than 0.3V and the maximum IOn/Off = 1mA. For example, to program the output voltage of the 12V Austin Lynx Programmable SMT module to 1.8 Vdc, Rtrim is calculated VIN+ MODULE is follows: R2 10500   Rtrim= −1000   ON/OFF 1.8− 0.75   Q2 + R1 Rtrim= 9.024kΩ V ON/OFF I ON/OFF PWM Enable R3 Vout V (+) V (+) IN O Q1 Q3 CSS ON/OFF R4 LOAD TRIM GND _ R trim Figure 27. Remote On/Off Implementation. GND Overcurrent Protection To provide protection in a fault (output overload) condition, the Figure 28. Circuit configuration for programming output unit is equipped with internal current-limiting circuitry and can voltage using an external resistor. endure current limiting continuously. At the point of current-limit inception, the unit enters hiccup mode. The unit Table 1 provides Rtrim values required for some common operates normally once the output current is brought back into output voltages its specified range. The typical average output current during hiccup is 3 A. Table 1 Input Undervoltage Lockout V (V) Rtrim (KΩ) O, set At input voltages below the input undervoltage lockout limit, 0.7525 Open module operation is disabled. The module will begin to operate 1.2 22.46 at an input voltage above the undervoltage lockout turn-on 1.5 13.05 threshold. 1.8 9.024 Overtemperature Protection 2.5 5.009 To provide over temperature protection in a fault condition, the 3.3 3.122 unit relies upon the thermal protection feature of the controller 5.0 1.472 IC. The unit will shutdown if the thermal reference point T , ref o exceeds 125 C (typical), but the thermal shutdown is not intended as a guarantee that the unit will survive temperatures October 7, 2015 ©2013 General Electric Company. All rights reserved. Page 12 GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current under the Design Tools section, also calculates the values of Feature Descriptions (continued) Rmargin-up and Rmargin-down for a specific output voltage and % By using a 1% tolerance trim resistor, set point tolerance of margin. Please consult your local GE technical ±2% is achieved as specified in the electrical specification. The representative for additional details POL Programming Tool, available at www.gecriticalpower.com Vo under the Design Tools section, helps determine the required external trim resistor needed for a specific output voltage. Rmargin-down Austin Lynx or The amount of power delivered by the module is defined as the Lynx II Series voltage at the output terminals multiplied by the output current. Q2 When using the trim feature, the output voltage of the module can be increased, which at the same output current would Trim increase the power output of the module. Care should be taken to ensure that the maximum output power of the module Rmargin-up remains at or below the maximum rated power (Pmax = Vo,set x Rtrim I ). o,max Q1 Remote Sense GND The 12V Austin Lynx Programmable SMT power modules have a Remote Sense feature to minimize the effects of distribution losses by regulating the voltage at the Remote Sense and GND Figure 30. Circuit Configuration for margining Output pins (See Figure 29). The voltage between the Sense pin and Vo voltage. pin must not exceed 0.5V. Although both the Remote Sense and the TRIM features can increase the output voltage Vo, the maximum increase is not the sum of both. The maximum Vo increase is the larger of either the Remote Sense or TRIM. The amount of power delivered by the module is defined as the output voltage multiplied by the output current (Vo x Io). When using Remote Sense and/or TRIM, the output voltage of the module can increase, which if the same output is maintained, increases the power output by the module. Make sure that the maximum output power of the module remains at or below the maximum rated power. When the Remote Sense feature is not being used, leave the Remote Sense pin unconnected. R R R R distribution contact contact distribution VIN(+) VO Sense RLOAD Rdistribution Rcontact Rcontact Rdistribution COM COM Figure 29. Remote sense circuit configuration Voltage Margining Output voltage margining can be implemented in the 12V Austin Lynx Programmable SMT modules by connecting a resistor, R , from Trim pin to ground pin for margining- margin-up up the output voltage and by connecting a resistor, Rmargin- , from Trim pin to Output pin. Figure 30 shows the circuit down configuration for output voltage margining. The POL Programming Tool, available at www.gecriticalpower.com October 7, 2015 ©2013 General Electric Company. All rights reserved. Page 13 GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Thermal Considerations Power modules operate in a variety of thermal environments; 25.4_ however, sufficient cooling should always be provided to help Wind Tunnel (1.0) ensure reliable operation. Considerations include ambient temperature, airflow, module PWBs power dissipation, and the need for increased reliability. A Power Module 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 32. Note that the airflow is parallel to the short axis of the module as shown in figure 31. The derating data applies to airflow in either direction of the 76.2_ module’s short axis. (3.0) x Probe Location for measuring 8.3_ airflow and (0.325) ambient temperature Air flow Figure 32. Thermal Test Set-up. Heat Transfer via Convection Figure 31. T Temperature measurement location. ref Increased airflow over the module enhances the heat transfer via convection. Thermal derating curves showing the maximum output current that can be delivered at different The thermal reference point, T used in the specifications is ref local ambient temperatures (TA) for airflow conditions ranging shown in Figure 31. For reliable operation this temperature o from natural convection and up to 2m/s (400 ft./min) are should not exceed 115 C. shown in the Characteristics Curves section. 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. October 7, 2015 ©2013 General Electric Company. All rights reserved. Page 14 GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Mechanical Outline Dimensions are in millimeters and (inches). Tolerances: x.x mm ± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated] x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.) October 7, 2015 ©2013 General Electric Company. All rights reserved. Page 15 GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Recommended Pad Layout Dimensions are in millimeters and (inches). Tolerances: x.x mm ± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated] x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.) October 7, 2015 ©2013 General Electric Company. All rights reserved. Page 16 GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Packaging Details The 12V Austin Lynx Programmable SMT version is supplied in tape & reel as standard. Modules are shipped in quantities of 250 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: 44.00 mm (1.732”) October 7, 2015 ©2013 General Electric Company. All rights reserved. Page 17 GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Surface Mount Information o Typically, the eutectic solder melts at 183 C, wets the land, Pick and Place and subsequently wicks the device connection. Sufficient The 12V Austin Lynx Programmable SMT modules use an time must be allowed to fuse the plating on the connection open frame construction and are designed for a fully to ensure a reliable solder joint. There are several types of automated assembly process. The modules are fitted with a SMT reflow technologies currently used in the industry. label designed to provide a large surface area for pick and These surface mount power modules can be reliably place operations. The label meets all the requirements for soldered using natural forced convection, IR (radiant surface mount processing, as well as safety standards, and infrared), or a combination of convection/IR. For reliable o is able to withstand reflow temperatures of up to 300 C. The soldering the solder reflow profile should be established by label also carries product information such as product code, accurately measuring the modules CP connector serial number and the location of manufacture. temperatures. REFLOW TIME (S) Figure 33. Pick and Place Location. Figure 34. Reflow Profile for Tin/Lead (Sn/Pb) process. Nozzle Recommendations The module weight has been kept to a minimum by using open frame construction. Even so, these modules have a relatively large mass when compared to conventional SMT components. Variables such as nozzle size, tip style, vacuum pressure and placement speed should be considered to optimize this process. The minimum recommended nozzle diameter for reliable operation is 6mm. The maximum nozzle outer diameter, which will safely fit within the allowable component spacing, is 9 mm. Oblong or oval nozzles up to 11 x 9 mm may also be used within the space available. o Figure 35. Time Limit Curve Above 205 C for Tin/Lead Tin Lead Soldering (Sn/Pb) process. TM The Austin Lynx 12 V SMT power modules are lead free modules and can be soldered either in a lead-free solder process or in a conventional Tin/Lead (Sn/Pb) process. It is recommended that the customer review data sheets in order to customize the solder reflow profile for each application board assembly. The following instructions must be observed when soldering these units. Failure to observe these instructions may result in the failure of or cause damage to the modules, and can adversely affect long-term reliability. In a conventional Tin/Lead (Sn/Pb) solder process peak o reflow temperatures are limited to less than 235 C. October 7, 2015 ©2013 General Electric Company. All rights reserved. Page 18 MAX TEMP SOLDER (°C) REFLOW TEMP (°C) GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current 300 Surface Mount Information (continued) Per J-STD-020 Rev. C Peak Temp 260°C 250 Lead Free Soldering Cooling The –Z version 12V Austin Lynx Programmable SMT modules 200 Zone * Min. Time Above 235°C are lead-free (Pb-free) and RoHS compliant and are both 15 Seconds forward and backward compatible in a Pb-free and a SnPb 150 Heating Zone *Time Above 217°C soldering process. Failure to observe the instructions below 1°C/Second 60 Seconds 100 may result in the failure of or cause damage to the modules and can adversely affect long-term reliability. 50 0 Pb-free Reflow Profile Reflow Time (Seconds) Power Systems will comply with J-STD-020 Rev. C Figure 36. Recommended linear reflow profile using (Moisture/Reflow Sensitivity Classification for Nonhermetic Sn/Ag/Cu solder. 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. 36. MSL Rating The 12V Austin Lynx Programmable SMT 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). 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 ≤ 30°C 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. 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). October 7, 2015 ©2013 General Electric Company. All rights reserved. Page 19 Reflow Temp (°C) GE Data Sheet TM 12V AustinLynx 10A: Non-Isolated DC-DC Power Modules,Programmable 10Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Ordering Information Please contact your GE Sales Representative for pricing, availability and optional features. Table 2. Device Codes Input Output Output Connector Device Code Efficiency Comcodes Voltage Voltage Current Type AXA010A0X3-SR 10 – 14Vdc 0.75 – 5.5 V 10 A SMT 108970138 93% AXA010A0X3-SRZ 10 – 14Vdc 0.75 – 5.5 V 10 A SMT CC109101326 93% -Z refers to RoHS-compliant versions 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. October 7, 2015 ©2015 General Electric Company. All International rights reserved. Version 1.45