Data Sheet GE TM Austin Lynx : SIP Non-Isolated DC-DC Power Modules, Programmable 3.0Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current 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 output current  High efficiency – 95% at 3.3V full load (VIN = 5.0V)  Small size and low profile: 50.8 mm x 12.7 mm x 8.10 mm (2.00 in x 0.5 in x 0.32 in)  Low output ripple and noise  High Reliability: Applications o Calculated MTBF = 15.7 M hours at 25 C Full-load  Distributed power architectures  Constant switching frequency (300 kHz)  Intermediate bus voltage applications  Output voltage programmable from 0.75 Vdc to  Telecommunications equipment 3.63Vdc via external resistor  Servers and storage applications  Line Regulation: 0.3% (typical)  Networking equipment  Load Regulation: 0.4% (typical)  Enterprise Networks  Temperature Regulation: 0.4 % (typical)  Latest generation IC’s (DSP, FPGA, ASIC) and  Remote On/Off Microprocessor powered applications  Remote Sense  Over temperature protection  Output overcurrent protection (non-latching)  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 Austin Lynx SIP power modules are non-isolated dc-dc converters that can deliver up to 10A of output current with full load efficiency of 95% at 3.3V output. These modules provide a precisely regulated output voltage programmable via an external resistor from 0.75Vdc to 3.63Vdc over a wide range of input voltage (V = 3.0 – 5.5Vdc). Their open-frame IN construction and small footprint enable designers to develop cost- and space-efficient solutions. * 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 8, 2015 ©2015 General Electric Company. All rights reserved. Data Sheet GE TM Austin Lynx : SIP Non-Isolated DC-DC Power Modules, Programmable 3.0Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc 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 VIN -0.3 5.8 Vdc Continuous Operating Ambient Temperature All TA -40 85 °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 VIN 3.0 5.5 Vdc Maximum Input Current All IIN,max 10 Adc (VIN= VIN, min to VIN, max, IO=IO, max VO,set = 3.3Vdc) Input No Load Current V = 0.75Vdc I 25 mA O,set IN,No load (V = 5.0Vdc, I = 0, module enabled) V = 3.3Vdc I 30 mA IN O O,set IN,No load Input Stand-by Current All IIN,stand-by 1.5 mA (V = 5.0Vdc, module disabled) IN 2 2 Inrush Transient All I t 0.1 A s Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1μH source impedance; V to V All 100 mAp-p IN, min IN, 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 15A, time-delay fuse (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 8, 2015 ©2015 General Electric Company. All rights reserved. Page 2 Data Sheet GE TM Austin Lynx : SIP Non-Isolated DC-DC Power Modules, Programmable 3.0Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit Output Voltage Set-point All V -2.0 V +2.0 % V O, set O, set O, set (VIN=IN, min, IO=IO, max, TA=25°C) Output Voltage All V -3.0% +3% % V O, set  O, set (Over all operating input voltage, resistive load, and temperature conditions until end of life) Adjustment Range All VO 0.7525 3.63 Vdc Selected by an external resistor Output Regulation Line (V =V to V ) All 0.3 % V IN IN, min IN, max   O, set Load (I =I to I ) All 0.4 % V O O, min O, max   O, set Temperature (T =T to T ) All 0.4 % 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 Cout = 1μF ceramic//10μFtantalum capacitors) RMS (5Hz to 20MHz bandwidth) All  8 15 mVrms Peak-to-Peak (5Hz to 20MHz bandwidth) All  25 50 mVpk-pk External Capacitance ESR ≥ 1 mΩ All CO, max   1000 μF ESR ≥ 10 mΩ All CO, max   5000 μF Output Current All I 0 10 Adc o Output Current Limit Inception (Hiccup Mode ) All I  200  % I O, lim o (V = 90% of V ) O O, set Output Short-Circuit Current All IO, s/c  3  Adc (VO≤250mV) ( Hiccup Mode ) Efficiency VO,set = 0.75Vdc η 82.5 % VIN= VIN, nom, TA=25°C VO, set = 1.2Vdc η 88.0 % IO=IO, max , VO= VO,set VO,set = 1.5Vdc η 89.5 % VO,set = 1.8Vdc η 91.0 % VO,set = 2.5Vdc η 93.0 % VO,set = 3.3Vdc η 95.0 % Switching Frequency All fsw  300  kHz Dynamic Load Response (dIo/dt=2.5A/µs; V = V ; T =25°C) All Vpk  200  mV IN IN, nom A 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 8, 2015 ©2015 General Electric Company. All rights reserved. Page 3 Data Sheet GE TM Austin Lynx : SIP Non-Isolated DC-DC Power Modules, Programmable 3.0Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit Dynamic Load Response All V 100 mV (dIo/dt=2.5A/µs; V VIN = VIN, nom; TA=25°C) pk   Load Change from Io= 50% to 100% of Io,max; Co = 2x150 μF polymer capacitors Peak Deviation Settling Time (Vo<10% peak deviation) All ts  100  µs (dIo/dt=2.5A/µs; VIN = VIN, nom; TA=25°C) All Vpk  100  mV 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  100  µs General Specifications Parameter Min Typ Max Unit Calculated MTBF (I =I , T =25°C) O O, max A 15,726,000 Hours Telecordia SR-332 Issue 1: Method 1 Case 3 Weight  5.6 (0.2)  g (oz.) October 8, 2015 ©2015 General Electric Company. All rights reserved. Page 4 Data Sheet GE TM Austin Lynx : SIP Non-Isolated DC-DC Power Modules, Programmable 3.0Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc 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 pnp or equivalent IN IN, min IN, max Compatible, Von/off signal referenced to GND See feature description section) Logic High Input High Voltage (Module OFF) All VIH 1.5 ― V V IN,max Input High Current All IIH ― 0.2 1 mA Logic Low Input Low Voltage (Module ON) All VIL -0.2 ― 0.3 V Input Low Current All IIL ― ― 10 µA Turn-On Delay and Rise Times o (I =I V =V T = 25 C) O O, max , IN IN, nom, A Case 1: On/Off input is set to Logic Low (Module All Tdelay ― 3.9 ― msec ON) and then input power is applied (delay from instant at which VIN = VIN, min until Vo=10% of Vo,set) All Tdelay ― 3.9 ― 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 ― 4.2 8.5 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 = 3.0 to 5.5Vdc, TA = 25 C Remote Sense Range ― ― 0.5 V Overtemperature Protection All Tref  125  °C (See Thermal Consideration section) Input Undervoltage Lockout Turn-on Threshold All 2.2 V Turn-off Threshold All 2.0 V October 8, 2015 ©2015 General Electric Company. All rights reserved. Page 5 Data Sheet GE TM Austin Lynx : SIP Non-Isolated DC-DC Power Modules, Programmable 3.0Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current Characteristic Curves TM The following figures provide typical characteristics for the Austin Lynx SIP modules at 25ºC. 90 96 VIN = 3.0V 93 87 90 84 87 81 84 81 78 IN V = 3.0V 78 IN V = 5.0V IN V = 5.0V 75 75 IN V = 5.5V IN V = 5.5V 72 72 0 2.5 5 7.5 10 0 2.5 5 7.5 10 OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A) Figure 1. Converter Efficiency versus Output Current (Vout Figure 4. Converter Efficiency versus Output Current = 0.75Vdc). (Vout = 1.8Vdc). 93 100 97 90 94 87 91 84 88 85 81 VIN = 3.0V 82 78 IN V = 3.0V IN 79 V = 5.0V VIN = 5.0V 75 76 IN IN V = 5.5V V = 5.5V 73 72 0 2.5 5 7.5 10 0 2.5 5 7.5 10 OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A) Figure 2. Converter Efficiency versus Output Current (Vout Figure 5. Converter Efficiency versus Output Current = 1.2Vdc). (Vout = 2.5Vdc). 94 100 91 97 88 94 85 91 82 88 85 79 IN VIN = 3.0V V = 4.5V 82 76 IN IN V = 5.0V V = 5.0V 79 73 IN VIN = 5.5V V = 5.5V 76 70 0 2.5 5 7.5 10 0 2.5 5 7.5 10 OUTPUT CURRENT, I (A) OUTPUT CURRENT, I (A) O O Figure 3. Converter Efficiency versus Output Current (Vout Figure 6. Converter Efficiency versus Output Current = 1.5Vdc). (Vout = 3.3Vdc). October 8, 2015 ©2015 General Electric Company. All rights reserved. Page 6 EFFICIENCY, (η) EFFICIENCY, (η) EFFICIENCY, (η) EFFICIENCY, (η) EFFICIENCY, (η) EFFICIENCY, (η) Data Sheet GE TM Austin Lynx : SIP Non-Isolated DC-DC Power Modules, Programmable 3.0Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current Characteristic Curves (continued) TM The following figures provide typical characteristics for the Austin Lynx SIP modules at 25ºC. 10 Io=10A 9 Io=5A 8 Io=0A 7 6 5 4 3 2 1 0 0.5 1.5 2.5 3.5 4.5 5.5 INPUT VOLTAGE, VIN (V) TIME, t (10µs/div) Figure 7. Input voltage vs. Input Current (Vo = 2.5Vdc). Figure 10. Transient Response to Dynamic Load Change from 50% to 100% of full load (Vo = 3.3Vdc). TIME, t (2µs/div) TIME, t (10µs/div) Figure 8. Typical Output Ripple and Noise (Vin = 5.0V dc, Figure 11. Transient Response to Dynamic Load Change Vo = 0.75Vdc, Io=10A). from 100% to 50% of full load (Vo = 3.3 Vdc). TIME, t (2µs/div) TIME, t (20µs/div) Figure 9. Typical Output Ripple and Noise (Vin = 5.0V dc, Figure 12. Transient Response to Dynamic Load Change Vo = 3.3 Vdc, Io=10A). from 50% to 100% of full load (Vo = 3.3 Vdc, Cext = 2x150 μF Polymer Capacitors). October 8, 2015 ©2015 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 VOLTAG I (A) O IO (A) (5A/div) VO (V) (200mV/div) (5A/div) VO (V) (200mV/div) IO (A) (5A/div) VO (V) (200mV/div) Data Sheet GE TM Austin Lynx : SIP Non-Isolated DC-DC Power Modules, Programmable 3.0Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current Characteristic Curves (continued) TM The following figures provide typical characteristics for the Austin Lynx SMT modules at 25ºC. TIME, t (2 ms/div) TIME, t (20µs/div) Figure 13. Transient Response to Dynamic Load Change Figure 16. Typical Start-Up with application of Vin from 100% of 50% full load (Vo = 3.3 Vdc, Cext = 2x150 μF (Vin = 5.5Vdc, Vo = 3.3Vdc, Io = 10A). Polymer Capacitors). TIME, t (2 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 5.0Vdc, Vo = 3.3Vdc, Io = 10.0A). Prebias (Vin = 3.3Vdc, Vo = 1.8Vdc, Io = 1.0A, Vbias =1.0Vdc). TIME, t (2 ms/div) TIME, t (10ms/div) Figure 15. Typical Start-Up Using Remote On/Off with Low- Figure 18. Output short circuit Current (Vin = 5.0Vdc, Vo ESR external capacitors (Vin = 5.5Vdc, Vo = 3.3Vdc, Io = = 0.75Vdc). 10.0A, Co = 1050µF). October 8, 2015 ©2015 General Electric Company. All rights reserved. Page 8 OUTPUT VOLTAGE On/Off VOLTAGE OUTPUT VOLTAGE On/Off VOLTAGE OUTPUT CURRENT, OUTPUT VOLTAGE VOV) (1V/div) VOn/off (V) (2V/div) VOV) (1V/div) VOn/off (V) (2V/div) IO (A) (5A/div) VO (V) (200mV/div) OUTPUT CURRENT, OUTPUT VOLTAGE On/Off VOLTAGE OUTPUT VOLTAGE INPUT VOLTAGE IO (A) (10A/div) VOV) (1V/div) VOn/off (V) (2V/div) VOV) (1V/div) VNN (V) (2V/div) Data Sheet GE TM Austin Lynx : SIP Non-Isolated DC-DC Power Modules, Programmable 3.0Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current Characteristic Curves (continued) TM The following figures provide thermal derating curves for the Austin Lynx SIP modules. 12 12 10 10 8 8 6 6 4 4 NC NC 2 2 100 LFM 100 LFM 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 Temperature and Airflow (Vin = 5.0Vdc, Vo=0.75Vdc). Ambient Temperature and Airflow (Vin = 5.0Vdc, Vo=3.3 Vdc). 12 12 10 10 8 8 6 6 4 4 NC NC 2 2 100 LFM 0 0 20 30 40 50 60 70 80 90 20 30 40 50 60 70 80 90 O O AMBIENT TEMPERATURE, T C AMBIENT TEMPERATURE, T C A A Figure 20. Derating Output Current versus Local Ambient Figure 23. Derating Output Current versus Local Temperature and Airflow (Vin = 5.0Vdc, Vo=1.8 Vdc). Ambient Temperature and Airflow (Vin = 3.3Vdc, Vo=2.5 Vdc). 12 10 8 6 4 NC 2 100 LFM 0 20 30 40 50 60 70 80 90 O AMBIENT TEMPERATURE, TA C Figure 21. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 5.0Vdc, Vo=2.5 Vdc). October 8, 2015 ©2015 General Electric Company. All rights reserved. Page 9 OUTPUT CURRENT, Io (A) OUTPUT CURRENT, Io (A) OUTPUT CURRENT, Io (A) OUTPUT CURRENT, Io (A) OUTPUT CURRENT, Io (A) Data Sheet GE TM Austin Lynx : SIP Non-Isolated DC-DC Power Modules, Programmable 3.0Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current Test Configurations Design Considerations Input Filtering CURRENT PROBE TO OSCILLOSCOPE TM Austin Lynx SIP module should be connected to a low- LTEST impedance source. A highly inductive source can affect the VIN(+) 1μH stability of the module. An input capacitance must be placed directly adjacent to the input pin of the module, to minimize C input ripple voltage and ensure module stability. IN C 1000μF S Electrolytic To minimize input voltage ripple, low-ESR polymer and ceramic 2x100μF E.S.R.<0.1Ω Tantalum capacitors are recommended at the input of the module. @ 20°C 100kHz Figure 27 shows input ripple voltage (mVp-p) for various COM outputs with 1x150 µF polymer capacitors (Panasonic p/n: EEFUE0J151R, Sanyo p/n: 6TPE150M) in parallel with 1 x 47 µF NOTE: Measure input reflected ripple current with a simulated ceramic capacitor (Panasonic p/n: ECJ-5YB0J476M, Taiyo- source inductance (L ) of 1μH. Capacitor C offsets TEST S possible battery impedance. Measure current as shown Yuden p/n: CEJMK432BJ476MMT) at full load. Figure 28 shows above. the input ripple with 3x150 µF polymer capacitors in parallel with 2 x 47 µF ceramic capacitor at full load. Figure 24. Input Reflected Ripple Current Test Setup. 180 COPPER STRIP 160 140 V (+) RESISTIVE O LOAD 120 1uF . 10uF SCOPE 100 COM 80 60 3.3Vin 40 GROUND PLANE 5Vin NOTE: All voltage measurements to be taken at the module 20 terminals, as shown above. If sockets are used then 0 Kelvin connections are required at the module terminals to avoid measurement errors due to socket contact 0.5 1 1.5 2 2.5 3 3.5 resistance. Figure 25. Output Ripple and Noise Test Setup. Output Voltage (Vdc) Figure 27. Input ripple voltage for various output with 1x150 µF polymer and 1x47 µF ceramic capacitors at the input (full Rdistribution Rcontact Rcontact Rdistribution load). VIN(+) VO 120 RLOAD V V IN O 100 80 R R R R distribution contact contact distribution COM COM 60 NOTE: All voltage measurements to be taken at the module 40 terminals, as shown above. If sockets are used then 3.3Vin Kelvin connections are required at the module terminals 20 to avoid measurement errors due to socket contact 5Vin resistance. 0 Figure 26. Output Voltage and Efficiency Test Setup. 0.5 1 1.5 2 2.5 3 3.5 Output Voltage (Vdc) V . I O O Efficiency = x 100 % η Figure 28. Input ripple voltage for various output with 3x150 V . I IN IN µF polymer and 2x47 µF ceramic capacitors at the input (full load) October 8, 2015 ©2015 General Electric Company. All rights reserved. Page 10 BATTERY Input Ripple Voltage (mVp-p) Input Ripple Voltage (mVp-p) Data Sheet GE TM Austin Lynx : SIP Non-Isolated DC-DC Power Modules, Programmable 3.0Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current Design Considerations (continued) Safety Considerations Output Filtering For safety agency approval the power module must be installed in compliance with the spacing and separation TM The Austin Lynx SIP module is designed for low output ripple requirements of the end-use safety agency standards, i.e., UL voltage and will meet the maximum output ripple specification 60950-1, CSA C22.2 No. 60950-1-03, and VDE 0850:2001-12 with 1 µF ceramic and 10 µF tantalum capacitors at the output (EN60950-1) Licensed. of the module. However, additional output filtering may be required by the system designer for a number of reasons. First, there may be a need to further reduce the output ripple and For the converter output to be considered meeting the noise of the module. Second, the dynamic response requirements of safety extra-low voltage (SELV), the input must characteristics may need to be customized to a particular load meet SELV requirements. The power module has extra-low step change. voltage (ELV) outputs when all inputs are ELV. To reduce the output ripple and improve the dynamic response The input to these units is to be provided with a fast-acting to a step load change, additional capacitance at the output fuse with a maximum rating of 15A in the positive input lead. 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 8, 2015 ©2015 General Electric Company. All rights reserved. Page 11 Data Sheet GE TM Austin Lynx : SIP Non-Isolated DC-DC Power Modules, Programmable 3.0Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current external resistor between the TRIM pin and the ground, the Feature Description output voltage of the module is 0.7525 Vdc. To calculate the Remote On/Off value of the resistor Rtrim for a particular output voltage Vo, use the following equation: TM The Austin Lynx power modules feature an an On/Off pin for remote On/Off operation. The On/Off pin is pulled high with an 21070   Rtrim= − 5110Ω external pull-up resistor (typical Rpull-up = 68k, ± 5%) as shown   Vo− 0.7525   in Fig. 28. When transistor Q1 is in the Off state, logic High is applied to the On/Off pin and the power module is Off. The For example, to program the output voltage of the Austin TM minimum On/off voltage for logic High on the On/Off pin is Lynx module to 1.8 Vdc, Rtrim is calculated is follows: 1.5Vdc. To turn the module ON, logic Low is applied to the 21070   On/Off pin by turning ON Q1. When not using the negative logic Rtrim= − 5110Ω   On/Off, leave the pin unconnected or tie to GND. 1.8− 0.7525   Rtrim= 15.004kΩ VIN+ MODULE R pull-up I ON/OFF V (+) V (+) ON/OFF IN O + PWM Enable V ON/OFF R1 LOAD ON/OFF TRIM Q2 CSS Q1 R trim R2 GND GND _ Figure 31. Circuit configuration for programming output Figure 29. Circuit configuration for using negative logic voltage using an external resistor. On/OFF. Table 1 provides Rtrim values for some common output voltages Overcurrent Protection Table 1 To provide protection in a fault (output overload) condition, the V (V) Rtrim (KΩ) O, set unit is equipped with internal current-limiting circuitry and can 0.7525 Open endure current limiting continuously. At the point of 1.2 41.973 current-limit inception, the unit enters hiccup mode. The unit operates normally once the output current is brought back into 1.5 23.077 its specified range. The typical average output current during 1.8 15.004 hiccup is 3A. 2.5 6.947 Input Undervoltage Lockout 3.3 3.160 At input voltages below the input undervoltage lockout limit, module operation is disabled. The module will begin to operate at an input voltage above the undervoltage lockout turn-on By using a 1% tolerance trim resistor, set point tolerance of threshold. ±2% is achieved as specified in the electrical specifications. Overtemperature Protection The POL Programming Tool, available at www.gecriticalpower.com under the Design Tools section, To provide protection in a fault condition, the unit is equipped helps determine the required external trim resistor needed for with a thermal shutdown circuit. The unit will shutdown if the a specific output voltage o thermal reference point T , exceeds 125 C (typical), but the ref thermal shutdown is not intended as a guarantee that the unit will survive temperatures beyond its rating. The module will automatically restarts after it cools down. Output Voltage Programming TM The output voltage of the Austin Lynx SIP can be programmed to any voltage from 0.75 Vdc to 3.3 Vdc by connecting a single resistor (shown as Rtrim in Figure 31) between the TRIM and GND pins of the module. Without an October 8, 2015 ©2015 General Electric Company. All rights reserved. Page 12 Data Sheet GE TM Austin Lynx : SIP Non-Isolated DC-DC Power Modules, Programmable 3.0Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current rated power. When the Remote Sense feature is not being Feature Descriptions (continued) used, leave the Remote Sense pin unconnected. The amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output R R R R distribution contact contact distribution V (+) V current. When using the trim feature, the output voltage of the IN O module can be increased, which at the same output current Sense would increase the power output of the module. Care should R LOAD be taken to ensure that the maximum output power of the module remains at or below the maximum rated power (Pmax = V x I ). o,set o,max Rdistribution Rcontact Rcontact Rdistribution COM COM Voltage Margining Output voltage margining can be implemented in the Austin Figure 33. Remote sense circuit configuration TM Lynx modules by connecting a resistor, Rmargin-up, from the Trim pin to the ground pin for margining-up the output voltage and by connecting a resistor, Rmargin-down, from the Trim pin to the Output pin for margining-down. Figure 32 shows the circuit configuration for output voltage margining. The POL Programming Tool, available at www.gecriticalpower.com under the Design Tools section, also calculates the values of R and R for a specific output voltage and % margin-up margin-down margin. Please consult your local GE technical representative for additional details. Vo Rmargin-down Austin Lynx or Lynx II Series Q2 Trim Rmargin-up Rtrim Q1 GND Figure 32. Circuit Configuration for margining Output voltage. Remote Sense TM The Austin Lynx SIP power modules have a Remote Sense feature to minimize the effects of distribution losses by regulating the voltage at the Remote Sense pin (See Figure 33). The voltage between the Sense pin and Vo pin must not exceed 0.5V. 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, 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 October 8, 2015 ©2015 General Electric Company. All rights reserved. Page 13 Data Sheet GE TM Austin Lynx : SIP Non-Isolated DC-DC Power Modules, Programmable 3.0Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current Heat Transfer via Convection Thermal Considerations The power modules operate in a variety of thermal Increased airflow over the module enhances the heat transfer environments; however, sufficient cooling should always be via convection. Thermal derating curves showing the provided to help ensure reliable operation. maximum output current that can be delivered at different local ambient temperature (T ) for airflow conditions ranging A Considerations include ambient temperature, airflow, module from natural convection and up to 2m/s (400 ft./min) are power dissipation, and the need for increased reliability. A shown in the Characteristics Curves section. 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 34. Note that the airflow is parallel to the long axis of the module as shown in Figure 35. The derating data applies to airflow in either direction of the module’s long axis. 25.4_ Wind Tunnel (1.0) PWBs Fig Power Module ure 35. T Temperature measurement location ref Post solder Cleaning and Drying Considerations 76.2_ Post solder cleaning is usually the final circuit-board assembly (3.0) process prior to electrical board testing. The result of x inadequate cleaning and drying can affect both the reliability of a power module and the testability of the finished Probe Location circuit-board assembly. For guidance on appropriate soldering, for measuring cleaning and drying procedures, refer to Board Mounted Power 8.3_ airflow and Modules: Soldering and Cleaning Application Note (0.325) ambient temperature Through-Hole Lead-Free Soldering Air Information flow The RoHS-compliant through-hole products use the SAC Figure 35. Thermal Test Set-up. (Sn/Ag/Cu) Pb-free solder and RoHS-compliant components. They are designed to be processed through single or dual wave The thermal reference point, Tref used in the specifications is soldering machines. The pins have an RoHS-compliant finish shown in Figure 34. For reliable operation this temperature that is compatible with both Pb and Pb-free wave soldering o should not exceed 125 C. processes. A maximum preheat rate of 3°C/s is suggested. The The output power of the module should not exceed the rated wave preheat process should be such that the temperature of power of the module (Vo,set x Io,max). the power module board is kept below 210°C. For Pb solder, Please refer to the Application Note “Thermal Characterization the recommended pot temperature is 260°C, while the Pb-free Process For Open-Frame Board-Mounted Power Modules” for a solder pot is 270°C max. Not all RoHS-compliant through-hole detailed discussion of thermal aspects including maximum products can be processed with paste-through-hole Pb or Pb- device temperatures. free reflow process. If additional information is needed, please consult with your GE technical representative for more details. October 8, 2015 ©2015 General Electric Company. All rights reserved. Page 14 Data Sheet GE TM Austin Lynx : SIP Non-Isolated DC-DC Power Modules, Programmable 3.0Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc 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.) Side View Side View Back View Back View PIN FUNCTION 1 Vo 2 Vo 3 Vo,sense 4 Vo 5 GND 6 GND 7 VIN 8 VIN 9 TRIM 10 ON/OFF October 8, 2015 ©2015 General Electric Company. All rights reserved. Page 15 Data Sheet GE TM Austin Lynx : SIP Non-Isolated DC-DC Power Modules, Programmable 3.0Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc 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.) Pin Function 1 Vo 2 Vo 3 Vo,sense 4 Vo 5 GND 6 GND 7 VIN 8 VIN 9 TRIM 10 ON/OFF October 8, 2015 ©2015 General Electric Company. All rights reserved. Page 16 Data Sheet GE TM Austin Lynx : SIP Non-Isolated DC-DC Power Modules, Programmable 3.0Vdc – 5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current Ordering Information Please contact your GE Sales Representative for pricing, availability and optional features. Table 2. Device Codes Input Voltage Output Output Efficiency Connector Comcodes Device Code Range Voltage Current 3.3V @full load Type AXH010A0X3 3.0 – 5.5Vdc 0.75 – 3.63Vdc 10 A TH 108992046 95.0% AXH010A0X3Z 3.0 – 5.5Vdc 0.75 – 3.63Vdc 10 A TH CC109101318 95.0% * Remote sense feature is active and pin 6 is added with code suffix “3” -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 8, 2015 ©2015 General Electric Company. All International rights reserved. Version 1.44