Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc –30/32Vdc input; 3 to 6Vdc & 5 to 15Vdc output; 30/50W Output Features  Compliant to RoHS EU Directive 2011/65/EU (-Z versions) RoHS Compliant  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)  Wide input voltage range AXB030: 18 to 30Vdc AXB050: 20 to 32Vdc  Output voltage programmable via external resistor AXB030: 3Vdc to 6Vdc AXB050: 5Vdc to 15Vdc  High efficiency modules (VIN = 24Vdc) Applications AXB030: 91% at 3.3V full load  Distributed power architectures AXB050: 94% at 12Vdc full load  Intermediate bus voltage applications  Low output ripple and noise  Telecommunications equipment  Monotonic start-up into pre-bias output  Wireless Base stations  Remote On/Off (Positive logic)  Industrial equipment  LANs/WANs  Remote Sense  Enterprise Networks  Small size and low profile:  Latest generation IC’s (DSP, FPGA, ASIC) and 33.0 mm x 13.5 mm x 8.28 mm Microprocessor powered applications (1.30 in x 0.53 in x 0.326 in)  Constant switching frequency  Wide operating temperature range (-40°C to 85°C)  Over current and Over temperature protection (non- latching) †  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 Austin Lynx 24V series SMT power modules are non-isolated DC-DC converters in an industry standard package that can deliver up to 48W of output power with a full load efficiency of 94% at 12Vdc output voltage (VIN = 24Vdc). These modules operate over a wide input voltage range (VIN = 18/20 – 30Vdc) and provide a precisely regulated output voltage from 3 to 6Vdc (AXB030) and 5 to 15Vdc (AXB050), programmable via an external resistor. Standard features include remote On/Off, adjustable output voltage, remote sense, over current and over temperature 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 January 20, 2016 ©2016 General Electric Company. All rights reserved. Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output 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 36 Vdc IN Continuous Operating Ambient Temperature All T -40 85 °C A (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 AXB030 VIN 18.0 24.0 30.0 Vdc AXB050 V 20.0 24.0 32.0 Vdc IN Maximum Input Current All IIN,max 3.5 Adc (V = 20V, V = 12V, I =I ) IN O O O, max Input No Load Current I 60 mAdc Vo = 3.3Vdc IN,No Load (VIN = 24Vdc, Io = 0, module enabled) Vo = 12Vdc IIN,No Load 110 mAdc Input Stand-by Current Vo = 3.3Vdc IIN,stand-by 3 mA (V = 24Vdc, module disabled) Vo = 12Vdc I 3 mA IN IN,stand-by 2 2 Inrush Transient All I t 1 A s Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1μH source impedance; V =20V to 30V, I = All 50 mAp-p IN O I ; See Figure 25) Omax Input Ripple Rejection (120Hz) All 50 dB CAUTION: These power modules can be used in a wide variety of applications ranging from simple standalone operation to an integrated part of sophisticated power architectures. To preserve maximum flexibility, no internal fuse has been provided. Also, extensive safety testing has shown that no external fuse is required to protect the unit. However, it is still recommended that some type of current-limiting power source be used to protect the module and evaluated in the end-use equipment. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 2 Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit Output Voltage Set-point All VO, set -2.0 VO, set +2.0 % VO, set (V =V , I =I , T =25°C) IN N, min O O, max A Output Voltage All V -3% +3% % V O, set  O, set (Over all operating input voltage, resistive load, and temperature conditions until end of life) Adjustment Range Selected by an external resistor AXB030 V 3.0 6.0 Vdc O AXB050 VO 5.0 15.0 Vdc Output Regulation Line (VIN=VIN, min to VIN, max) All   0.4 % VO, set Load (IO=IO, min to IO, max) All   0.4 % VO, set Temperature (Tref=TA, min to TA, max) All  0.5 1 % VO, set Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max Cout =0.01μF ceramic//10μFtantalum capacitors) Peak-to-Peak (5Hz to 20MHz bandwidth) AXB030  50 75 mVpk-pk Peak-to-Peak (5Hz to 20MHz bandwidth) AXB050 100 200 mV  pk-pk External Capacitance ESR ≥ 1 mΩ AXB030 C 0 1,000 μF O, max  ESR ≥ 10 mΩ AXB030 C 0 3,000 μF O, max  ESR ≥ 1 mΩ AXB050 C 0 1,000 μF O, max  ESR ≥ 10 mΩ AXB050 C 0 2,000 μF O, max  Output Current (V = V ) IN IN, nom Vo = 3.3Vdc AXB030 Io 0 10 Adc V = 5.0Vdc AXB050 I 0 8.0 Adc o o Output Power (V = V ) AXB030 P 33 W IN IN, nom o Vo =Vo,,min to Vo,,max AXB050 Po 50 W Output Short-Circuit Current AXB030 IO, s/c  15  Adc (VO≤250mV) ( Hiccup Mode ) AXB050 IO, s/c  20  Adc Efficiency V = 3.3Vdc η 90 % O,set VIN= VIN, nom, TA=25°C VO,set = 5.0Vdc η 93 % IO=IO, max , VO= VO,set VO,set = 12.0Vdc η 95 % VO,set = 15.0Vdc η 96 % Switching Frequency (Fixed) All f 300 kHz sw   January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 3 Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit Dynamic Load Response (dIO/dt=5A/µs; VIN=VIN, nom TA=25°C) Load Change from Io= 50% to 100% of I ,max; No O external output capacitors Peak Deviation (Vo = 3.3Vdc) AXB030 Vpk 300 mV Peak Deviation (Vo = 12Vdc) AXB050 Vpk 220 mV Settling Time (V <10% peak deviation) O All ts 50 µs (dIO/dt=5A/µs; VIN=VIN, nom; TA=25°C) Load Change from I = 100% to 50%of I , : No O O max external output capacitors Peak Deviation (Vo = 3.3Vdc) AXB030 V 320 mV pk Peak Deviation (Vo = 12Vdc) AXB050 Vpk 220 mV Settling Time (V <10% peak deviation) O All ts 50 µs (dI /dt=5A/µs; V =V , ; T =25°C) O IN IN nom A Load Change from Io= 50% to 100% of Io,max; 2x150 μF polymer capacitor Peak Deviation (Vo = 3.3Vdc) AXB030 V 120 mV pk  Peak Deviation (Vo = 12Vdc) AXB050 V 130 mV pk  Settling Time (VO<10% peak deviation) All t 50 s  µs (dIO/dt=5A/µs; VIN=VIN, nom; TA=25°C) Load Change from Io= 100% to 50%of I : 2x150 O,max μF polymer capacitor Peak Deviation (Vo = 3.3Vdc) AXB030 Vpk  130 mV Peak Deviation (Vo = 12Vdc) AXB050 Vpk 130 mV Settling Time (V <10% peak deviation) O All ts  50  µs General Specifications Parameter Device Min Typ Max Unit Calculated MTBF (VIN= VIN, nom, IO= 0.8IO, max, TA=40°C) AXB050 8,035,510 Hours Telecordia SR 332 Issue 1: Method 1, case 3 Weight  5.70 (0.20)  g (oz.) January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 4 Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output 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 (On/Off is open collector/drain logic input; Signal referenced to GND - See feature description section) Device is with suffix “4” – Positive Logic Logic High (On/Off pin open – Module ON) Input High Current All IIH 10 µA  Input High Voltage All VIH V −2.5V  30 V IN Logic Low (Module OFF) Input Low Current All IIL   1 mA 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 2 4 8 msec input power is applied (delay from instant at which VIN = VIN, min until Vo = 10% of Vo, set) All Tdelay 2 4 8 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 2 5 9 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 ― ― 0.5 V Over temperature Protection All Tref  125 135 °C (See Thermal Consideration section) Input Undervoltage Lockout Turn-on Threshold AXB030 17 Vdc AXB050 19 Vdc Turn-off Threshold AXB030 15 Vdc AXB050 17 Vdc January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 5 Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output Characteristic Curves o The following figures provide typical characteristics for the AXB030X module at 3.3V, 10A and 25 C. 95 12 2m/s (400LFM) 10 90 8 NC 85 Vin=20V 6 0.5m/s (100LFM) Vin=24V 1m/s (200LFM) 80 4 Vin=30V 2 75 0 70 0 20 40 60 80 100 0 2 4 6 8 10 O OUTPUT CURRENT, I (A) AMBIENT TEMPERATURE, T C O A Figure 1. Converter Efficiency versus Output Current. Figure 4. Derating Output Current versus Local Ambient Temperature and Airflow. TIME, t (1ms/div) TIME, t (1µs/div)) Figure 2. Typical output ripple and noise (VIN = VIN,NOM, Io = Figure 5. Typical Start-up Using Remote On/Off (VIN = 20V, Io = Io,max). Io,max). TIME, t (1ms/div) TIME, t (5µs /div) Figure 3. Transient Response to Dynamic Load Change Figure 6. Typical Start-up Using Input Voltage (VIN = 20V, Io = Io,max). from 50% to 100% of full load with di/dt of 5A/µs. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 6 OUTPUT CURRENT, OUTPUT VOLTAGEI (A) O OUTPUT VOLTAGE EFFICIENCY, (η) (5A/div) VO (V) (200mV/div) V (V) (20mV/div) O On/Off VOLTAGE OUTPUT VOLTAGE INPUT VOLTAGE OUTPUT VOLTAGE VOn/off (V) (20V/div) VO (V) (1V/div) OUTPUT CURRENT, Io (A) V (V) (20V/div) V (V) (1V/div) IN O Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output Characteristic Curves (continued) o The following figures provide typical characteristics for the AXB050X module at 5V, 8A and 25 C. 9 100 8 95 7 NC 100 lfm 90 6 (0.5m/s) 5 200 lfm Vin=20V 85 Vin=24V (1.0m/s) 4 80 Vin=30V 3 2 75 1 70 0 0 2 4 6 8 20 30 40 50 60 70 80 90 100 O OUTPUT CURRENT, I (A) AMBIENT TEMPERATURE, T C O A Figure 7. Converter Efficiency versus Output Current. Figure 10. Derating Output Current versus Local Ambient Temperature and Airflow (V = V ). IN IN,NOM TIME, t (2.5ms/div) TIME, t (1µs/div) Figure 8. Typical output ripple and noise (VIN = VIN,NOM, Io = Figure 11. Typical Start-up Using Remote On/Off (VIN = 24V, Io Io,max). = Io,max). TIME, t (5µs/div) TIME, t (2.5ms/div) Figure 9. Transient Response to Dynamic Load change from Figure 12. Typical Start-up Using Input Voltage (VIN = 20V, Io = 50% to 100% of full load with di/dt of 5A/µs. Io,max). January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 7 OUTPUT VOLTAGE OUTPUT CURRENT OUTPUT VOLTAGE IO (A) (5A/div) V (V) (200mV/div) V (V) (50mV/div) EFFICIENCY, (η) O O INPUT VOLTAGE OUTPUT VOLTAGE On/Off VOLTAGE OUTPUT VOLTAGE V (V) (10V/div) V (V) (2V/div) V (V) (10V/div) V (V) (2V/div) OUTPUT CURRENT, Io (A) IN O IN O Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output Characteristic Curves (continued) o The following figures provide typical characteristics for the AXB050X module at 12V, 4A and 25 C. 5 100 95 4 90 NC 3 Vin=20V 100 lfm Vin=24V 85 (0.5m/s) 2 80 Vin=30V 1 75 0 70 0 1 2 3 4 20 30 40 50 60 70 80 90 100 O OUTPUT CURRENT, I (A) AMBIENT TEMPERATURE, T C O A 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 (2ms/div) TIME, t (10µs /div) Figure 15. Transient Response to Dynamic Load change Figure 18. Typical Start-up Using Input Voltage (VIN = 20V, Io = Io,max). from 50% to 100% of full load with di/dt of 5A/µs. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 8 OUTPUT VOLTAGE OUTPUT CURRENT OUTPUT VOLTAGE EFFICIENCY, η (%) IO (A) (2A/div) VO (V) (100mV/div) VO (V) (10mV/div) INPUT VOLTAGE OUTPUTVOLTAGE V (V) On/Off VOLTAGE OUTPUT VOLTAGE V IN On/off (20V/div) VO (V) (5V/div) (V) (10V/div) VO (V) (5V/div) OUTPUT CURRENT, Io (A) Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output Characteristic Curves (continued) o The following figures provide typical characteristics for the AXB050X module at 15V, 3A and 25 C. 4 100 95 3 NC 90 Vin=20V 2 Vin=24V 85 80 1 Vin=30V 75 0 70 20 30 40 50 60 70 80 90 100 0 0.5 1 1.5 2 2.5 3 O OUTPUT CURRENT, 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 (1µs/div) TIME, t (2ms/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 (2.5ms/div) TIME, t (10µs /div) Figure 21. Transient Response to Dynamic Load change Figure 24. Typical Start-up Using Input Voltage (VIN = 20V, Io = Io,max). from 50% to 100% of full load with di/dt of 5A/µs. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 9 OUTPUT VOLTAGE OUTPUT CURRENT, OUTPUT VOLTAGE IO (A) (1A/div) V (V) (50mV/div) V (V) (20mV/div) EFFICIENCY, η (%) O O On/Off VOLTAGE OUTPUT VOLTAGE INPUT VOLTAGE OUTPUT VOLTAGE VIN (V) (20V/div) V (V) (5V/div) V (V) (10V/div) V (V) (5V/div) OUTPUT CURRENT, Io (A) O On/off O Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output Test Configurations Design Considerations Input Filtering CURRENT PROBE TO OSCILLOSCOPE TM The Austin Lynx 24V SMT module should be connected to a low-impedance source. A highly inductive source can affect L TEST V (+) IN the stability of the module. An input capacitance must be 1μH placed directly adjacent to the input pin of the module, to minimize input ripple voltage and ensure module stability. C IN C 220μF S Min E.S.R.<0.1Ω 150μF @ 20°C 100kHz Output Filtering COM TM The Austin Lynx 24V SMT module is designed for low output ripple voltage and will meet the maximum output ripple NOTE: Measure input reflected ripple current with a simulated specification with 1 µF ceramic and 10 µF tantalum capacitors source inductance (LTEST) of 1μH. Capacitor CS offsets possible battery impedance. Measure current as shown at the output of the module. However, additional output above. filtering may be required by the system designer for a number of reasons. First, there may be a need to further reduce the output ripple and noise of the module. Second, the dynamic Figure 25. Input Reflected Ripple Current Test Setup. response characteristics may need to be customized to a particular load step change. COPPER STRIP To reduce the output ripple and improve the dynamic response V (+) RESISTIVE O LOAD to a step load change, additional capacitance at the output can be used. Low ESR polymer and ceramic capacitors are 1uF . 10uF SCOPE recommended to improve the dynamic response of the COM module. For stable operation of the module, limit the capacitance to less than the maximum output capacitance as specified in the electrical specification table. GROUND PLANE NOTE: All voltage measurements to be taken at the module terminals, as shown above. If sockets are used then Safety Considerations Kelvin connections are required at the module terminals to avoid measurement errors due to socket contact For safety agency approval the power module must be resistance. installed in compliance with the spacing and separation Figure 26. Output Ripple and Noise Test Setup. requirements of the end-use safety agency standards, i.e., UL 60950, CSA C22.2 No. 60950-00, EN60950 (VDE 0850) rd (IEC60950, 3 edition) Licensed. Rdistribution Rcontact Rcontact Rdistribution For the converter output to be considered meeting the VIN(+) VO requirements of safety extra-low voltage (SELV), the input must meet SELV requirements. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. RLOAD 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 27. Output Voltage and Efficiency Test Setup. V . I O O Efficiency = x 100 % η V . I IN IN January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 10 BATTERY Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output Feature Description Rdistribution Rcontact Rcontact Rdistribution VIN(+) VO Remote On/Off TM Sense The Austin Lynx 24V SMT power modules feature an On/Off RLOAD pin for remote On/Off operation. Positive Logic On/Off signal, device code suffix “4”, turns the module ON during a logic High on the On/Off pin and turns the module OFF during a logic Low. R R R R distribution contact contact distribution COM COM For positive logic modules, the circuit configuration for using the On/Off pin is shown in Figure 28. The On/Off pin is an open Figure 29. Effective Circuit Configuration for Remote collector/drain logic input signal (Von/Off) that is referenced to Sense operation. ground. During a logic-high (On/Off pin is pulled high internal to the module) when the transistor Q1 is in the Off state, the power module is ON. Maximum allowable leakage current of Overcurrent Protection the transistor when Von/off = V is 10µA. Applying a logic- IN,max To provide protection in a fault (output overload) condition, the low when the transistor Q1 is turned-On, the power module is unit is equipped with internal current-limiting circuitry and can OFF. During this state VOn/Off must be less than 1.2V. When endure current limiting continuously. At the point of not using positive logic On/off pin, leave the pin unconnected current-limit inception, the unit enters hiccup mode. The unit or tie to V IN. operates normally once the output current is brought back into its specified range. The average output current during hiccup is VIN+ MODULE 20% IO, max. R2 Input Undervoltage Lockout ON/OFF Q2 + R1 At input voltages below the input undervoltage lockout limit, V ON/OFF the module operation is disabled. The module will begin to I ON/OFF PWM Enable operate at an input voltage above the undervoltage lockout R3 turn-on threshold. Q1 Overtemperature Protection Q3 CSS To provide protection in a fault condition, the unit is equipped R4 with a thermal shutdown circuit. The unit will shutdown if the o overtemperature threshold of 130 C is exceeded at the thermal GND _ reference point T . The thermal shutdown is not intended as a ref guarantee that the unit will survive temperatures beyond its Figure 28. Remote On/Off Implementation circuit. rating. Once the unit goes into thermal shutdown it will then wait to cool before attempting to restart. Remote Sense Output Voltage Programming The Austin Lynx 24V power modules have a Remote Sense The output voltage of the Austin Lynx 24V can be programmed feature to minimize the effects of distribution losses by to any voltage in the specified ranges by connecting a resistor regulating the voltage at the Remote Sense pin (See Figure 29). (shown as Rtrim in Figure 30) between the Trim and GND pins The voltage between the Sense pin and Vo pin must not exceed of the module. Without an external resistor between the Trim 0.5V. and GND pins, the output of the module will be at the low-end of the specified range. To calculate the value of the trim The amount of power delivered by the module is defined as the resistor, Rtrim for a desired output voltage, use the following output voltage multiplied by the output current (Vo x Io). When equations: using Remote Sense, the output voltage of the module can For the AX030A0X modules, increase which increases the power output of the module. Make sure that the maximum output power of the module 10500   remains at or below the maximum rated power. When the Rtrim= − 3480Ω   Vo− 3.018   Remote Sense feature is not being used, connect the Remote Sense pin to the output of the module. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 11 Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output Feature Descriptions (continued) Vo Rmargin-down Output Voltage Programming (continued) For the AX050A0X modules, Austin Lynx or Lynx II Series 10500   Rtrim= −1000Ω Q2   Vo− 5.021   Trim where, Rtrim is the external resistor in Ω and Vo is the desired output voltage Rmargin-up Rtrim V (+) V (+) IN O Q1 GND LOAD ON/OFF TRIM Figure 31. Circuit Configuration for margining the output voltage. Rtrim GND Figure 30. Circuit configuration to program output voltage using an external resistor. By using a ±0.5% tolerance trim resistor with a TC of ±100ppm, a set point tolerance of ±2% can be achieved as specified in the electrical specifications. The POL Programming Tool, available at www.GEcriticalpower.com under the Design Tools section, helps determine the required external trim resistor needed for a specific output voltage. Voltage Margining Output voltage margining can be implemented in the Austin Lynx 24V modules by connecting a resistor, Rmargin-up, from the Trim pin to the ground pin for margining-up the output voltage and by connecting a resistor, Rmargin-down, from the Trim pin to output pin for margining-down. Figure 31 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. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 12 Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output 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 32. Note that the airflow is parallel to the long axis of the module as shown in figure 32. The derating data applies to airflow in either direction of the module’s long axis. Figure 33. T Temperature measurement location. ref The thermal reference point, T used in the specifications is ref 25.4_ shown in Figure 33. For reliable operation this temperature Wind Tunnel (1.0) o should not exceed 125 C. The output power of the module should not exceed the rated PWBs power of the module (Vo,set x Io,max). Power Module 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. 76.2_ (3.0) x Probe Location for measuring 12.7_ airflow and (0.50) ambient temperature Air flow Figure 32. Thermal Test Set-up. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 13 Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output 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.) Non Co-planarity (max): 0.15 (0.006) January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 14 Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output 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 15 Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output Packaging Details TM The Austin Lynx 24V SMT versions are supplied in tape & reel as standard. Modules are shipped in quantities of 250 modules per reel. Tape Dimensions Reel Dimensions Outside diameter: 330.2 mm (13.00) Inside diameter: 177.8 mm (7.00”) Tape Width: 44.0 mm (1.73”) January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 16 Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output Surface Mount Information In a conventional Tin/Lead (Sn/Pb) solder process peak Pick and Place o reflow temperatures are limited to less than 235 C. TM The Austin Lynx 24V SMT modules use open frame o Typically, the eutectic solder melts at 183 C, wets the land, construction and are designed for fully automated assembly and subsequently wicks the device connection. Sufficient process. The modules are fitted with a label designed to time must be allowed to fuse the plating on the connection provide a large surface area for pick and place operation. to ensure a reliable solder joint. There are several types of The label meets all the requirements for surface mount SMT reflow technologies currently used in the industry. processing, as well as safety standards, and is able to These surface mount power modules can be reliably o withstand reflow temperatures of up to 300 C. The label soldered using natural forced convection, IR (radiant also carries product information such as product code, serial infrared), or a combination of convection/IR. For reliable number and location of manufacture. soldering the solder reflow profile should be established by accurately measuring the modules CP connector temperatures. Figure 34. Pick and place Location. REFLOW TIME (S) Nozzle Recommendations Figure 35. Reflow Profile for Tin/Lead (Sn/Pb) process. 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. For further information please contact your local GE technical representative. o Figure 36. Time Limit Curve Above 205 C for Tin/Lead (Sn/Pb) process. Tin Lead Soldering TM The Austin Lynx 24V 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. January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 17 MAX TEMP SOLDER (°C) REFLOW TEMP (°C) Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output 300 Surface Mount Information (continued) Per J-STD-020 Rev. C Peak Temp 260°C 250 Lead Free Soldering Cooling The –Z version Austin Lynx 24V SMT modules are lead-free 200 Zone * Min. Time Above 235°C (Pb-free) and RoHS compliant and are both forward and 15 Seconds 150 backward compatible in a Pb-free and a SnPb soldering Heating Zone *Time Above 217°C process. Failure to observe the instructions below may 1°C/Second 60 Seconds 100 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 37. 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 Figure. 37. MSL Rating The Austin Lynx 24V SMT modules have an 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). January 20, 2016 ©2016 General Electric Company. All rights reserved. Page 18 Reflow Temp (°C) Data Sheet GE TM 24V Austin Lynx : Non-Isolated DC-DC Power Modules 18/20Vdc – 30/32Vdc input; 3 - 6Vdc & 5 – 15Vdc output; 30/50W Output Ordering Information Please contact your GE Sales Representative for pricing, availability and optional features. Table 1. Device Codes Input Output Output On/Off Connector Device Code Comcodes Voltage Range Voltage Power Logic Type AXB030X43-SR 18 – 30Vdc 3.0 – 6.0Vdc 30W Positive SMT 108992673 AXB030X43-SRZ 18 – 30Vdc 3.0 – 6.0Vdc 30W Positive SMT CC109106738 AXB050X43-SR 20 – 32Vdc 5.0 – 15.0Vdc 50W Positive SMT 108992681 AXB050X43-SRZ 20 – 32Vdc 5.0 – 15.0Vdc 50W Positive SMT CC109104857 -Z refers to RoHS-compliant codes 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 1.26