Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc – 14Vdc input; 0.75Vdc to 5.5Vdc 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)  Flexible output voltage sequencing EZ-SEQUENCE  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) Applications  Low output ripple and noise  High Reliability:  Distributed power architectures o Calculated MTBF = 15 M hours at 25 C Full-load  Intermediate bus voltage applications  Output voltage programmable from 0.75 Vdc to 5.5  Telecommunications equipment Vdc via external resistor  Servers and storage applications  Line Regulation: 0.3% (typical)  Load Regulation: 0.4% (typical)  Networking equipment  Temperature Regulation: 0.4% (typical)  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 Austin Lynx II 12V 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 (V = 8.3 IN TM TM – 14Vdc). The Austin Lynx II 12V series has a sequencing feature, EZ-SEQUENCE that enable designers to implement various types of output voltage sequencing when powering multiple voltages on a board. Their open-frame construction and small footprint enable designers to develop cost- and space-efficient solutions. In addition to sequencing, standard features include remote On/Off, remote sense, output voltage adjustment, 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 October 2, 2015 ©2015 General Electric Company. All rights reserved. Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –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 VIN -0.3 15 Vdc Continuous Sequencing Voltage All VSEQ -0.3 ViN, Max Vdc 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 Vo,set ≤ 3.63 V 8.3 12.0 14.0 Vdc IN Vo,set > 3.63 VIN 8.3 12.0 13.2 Vdc Maximum Input Current All IIN,max 7.0 Adc (VIN= VIN, min to VIN, max, IO=IO, max VO,set = 3.3Vdc) Input No Load Current VO,set = 0.75 Vdc IIN,No load 40 mA (VIN = 12Vdc, 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 = 12Vdc, 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 2, 2015 ©2015 General Electric Company. All rights reserved. Page 2 Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –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 V –2.0 +2.0 % V O, set  O, set (VIN=VIN, min, IO=IO, max, TA=25°C) Output Voltage All V –2.5% +3.5% % 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 5.5 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  12 30 mVrms Peak-to-Peak (5Hz to 20MHz bandwidth) All  30 75 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 Output Short-Circuit Current All I 3 Adc O, s/c   (V ≤250mV) ( Hiccup Mode ) O Efficiency VO, set = 0.75Vdc η 81.0 % V = V , T =25°C V = 1.2Vdc η 87.5 % IN IN, nom A O, set I =I V = V V = 1.5Vdc η 89.0 % O O, max , O O,set O,set V = 1.8Vdc η 90.0 % O,set V = 2.5Vdc η 92.0 % O,set V = 3.3Vdc η 93.0 % O,set V = 5.0Vdc η 95.0 % O,set Switching Frequency All f sw  300  kHz Dynamic Load Response All V 200 mV (dIo/dt=2.5A/µs; VIN = VIN, nom; TA=25°C) pk   Load Change from Io= 50% to 100% of Io,max; 1μF ceramic// 10 μF tantalum Peak Deviation Settling Time (Vo<10% peak deviation) All t 25 s   µs All V 200 mV (dIo/dt=2.5A/µs; VIN = VIN, nom; TA=25°C) pk   Load Change from Io= 100% to 50%of Io,max: 1μF ceramic// 10 μF tantalum Peak Deviation Settling Time (Vo<10% peak deviation) All t 25 µs s   October 2, 2015 ©2015 General Electric Company. All rights reserved. Page 3 Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc 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  25  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  25  µs General Specifications Parameter Min Typ Max Unit Calculated MTBF (IO=IO, max, TA=25°C) 15,618,000 Hours Telecordia SR-332 Issue 1: Method 1 Case 3 Weight  5.6 (0.2)  g (oz.) October 2, 2015 ©2015 General Electric Company. All rights reserved. Page 4 Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –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 On/Off Signal interface Device code with Suffix “4” – Positive logic (On/Off is open collector/drain logic input; Signal referenced to GND - See feature description section) Input High Voltage (Module ON) All VIH ― ― V V IN, max Input High Current All IIH ― ― 10 μA Input Low Voltage (Module OFF) All VIL -0.2 ― 0.3 V Input Low Current All IIL ― 0.2 1 mA Device Code with no suffix – Negative Logic (On/OFF pin is open collector/drain logic input with external pull-up resistor; signal referenced to GND) Input High Voltage (Module OFF) All VIH 2.5 ― VIN,max Vdc Input High Current All IIH 0.2 1 mA Input Low Voltage (Module ON) All VIL -0.2 ― 0.3 Vdc Input low Current All IIL ― 10 μA 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 VIN =VIN, min until Vo=10% of Vo,set) 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 I = I ; V = 3.0 to 5.5Vdc, T = 25 C O O, max IN A Sequencing Delay time Delay from VIN, min to application of voltage on SEQ pin All TsEQ-delay 10 msec Tracking Accuracy (Power-Up: 2V/ms) All VSEQ –Vo 100 200 mV (Power-Down: 1V/ms) All VSEQ –Vo 300 500 mV (V to V ; I to I VSEQ < Vo) IN, min IN, max O, min O, max Remote Sense Range All ― ― 0.5 V Overtemperature Protection All Tref  125  °C (See Thermal Consideration section) Input Undervoltage Lockout Turn-on Threshold All  7.9  V Turn-off Threshold All  7.8  V October 2, 2015 ©2015 General Electric Company. All rights reserved. Page 5 Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Characteristic Curves TM The following figures provide typical characteristics for the Austin Lynx 12 V II 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 70 Vin=10V 74 0 2 4 6 8 10 0 2 4 6 8 10 OUTPUT CURRENT, I (A) OUTPUT CURRENT, I (A) O O 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=10V Vin=14V 78 81 Vin=12V 76 79 Vin=10V 74 77 0 2 4 6 8 10 0 2 4 6 8 10 OUTPUT CURRENT, I (A) OUTPUT CURRENT, I (A) O O 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 82 Vin=10V 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, I (A) OUTPUT CURRENT, I (A) O O Figure 3. Converter Efficiency versus Output Current (Vout Figure 6. Converter Efficiency versus Output Current (Vout = 1.8Vdc). = 5.0Vdc). October 2, 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 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Characteristic Curves (continued) TM The following figures provide typical characteristics for the Austin Lynx II 12 V 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, VIN (V) 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 (Vin = 12.0V dc, Vo = 5.0 Vdc, Io=10A). μF Polymer Capacitors). October 2, 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 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) Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Characteristic Curves (continued) TM The following figures provide typical characteristics for the Austin Lynx II 12 V SMT modules at 25ºC. TIME, t (2 ms/div) TIME, t (10µs/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 = 3.3 Vdc, Cext = 2x150 μF ESR polymer capacitors at the output (7x150 μF) (Vin = Polymer Capacitors). 12Vdc, Vo = 5.0Vdc, Io = 10A, Co = 1050 μF) 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 12.0Vdc, Vo = 5.0Vdc, Io = 10.0A). Prebias (Vin = 12.0Vdc, Vo = 2.5Vdc, Io = 1.0A, Vbias =1.2Vdc). 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 = 12.0Vdc, Vo = 0.75Vdc). ESR external capacitors (Co= 5000µF) (Vin = 12.0Vdc, Vo = 5.0Vdc, Io = 10.0A, Co = 1050µF). October 2, 2015 ©2015 General Electric Company. All rights reserved. Page 8 OUTPUT VOLTAGE On/Off VOLTAGE OUTPUT VOLTAGE On/Off VOLTAGE OUTPUT CURRENT, OUTPUTVOLTAGE VO (2V/div) VOn/off (V) (5V/div) VOV) (2V/div) VOn/off (V) (5V/div) IO (A) (2A/div) VO (V) (100mV/div) OUTPUT CURRENT, OUTPUT VOLTAGE OUTPUT VOLTAGE INPUT VOLTAGE IO (A) (10A/div) VOV) (0.5V/div) Vo (V) (2V/div) VIN (V) (5V/div) Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Characteristic Curves (continued) TM The following figures provide thermal derating curves for the Austin Lynx II 12 V 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, T C AMBIENT TEMPERATURE, T C A A 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, T C A 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 2, 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) Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Test Configurations Design Considerations Input Filtering CURRENT PROBE TO OSCILLOSCOPE TM Austin Lynx II 12V SMT module should be connected to a low- LTEST impedance AC 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 2x100μF E.S.R.<0.1Ω Tantalum @ 20°C 100kHz In a typical application, 4x47 µF low-ESR tantalum capacitors (AVX part #: TPSE476M025R0100, 47µF 25V 100 mΩ ESR COM tantalum capacitor) will be sufficient to provide adequate ripple voltage at the input of the module. To minimize ripple voltage NOTE: Measure input reflected ripple current with a simulated source inductance (L ) of 1μH. Capacitor C offsets TEST S at the input, low ESR ceramic capacitors are recommended at possible battery impedance. Measure current as shown the input of the module. Figure 26 shows input ripple voltage above. (mVp-p) for various outputs with 4x47 µF tantalum capacitors Figure 23. Input Reflected Ripple Current Test Setup. and with 4x22 µF ceramic capacitor (TDK part #: C4532X5R1C226M) at full load. COPPER STRIP 300 V (+) RESISTIVE O LOAD 250 1uF . 10uF SCOPE 200 COM 150 GROUND PLANE 100 NOTE: All voltage measurements to be taken at the module terminals, as shown above. If sockets are used then Tantalum Kelvin connections are required at the module terminals 50 to avoid measurement errors due to socket contact resistance. Ceramic 0 Figure 24. Output Ripple and Noise Test Setup. 0 1 2 3 4 5 6 Output Voltage (Vdc) Rdistribution Rcontact Rcontact Rdistribution Figure 26. Input ripple voltage for various output with 4x22 VIN(+) VO µF polymer and 4x47 µF ceramic capacitors at the input (full load). 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 25. Output Voltage and Efficiency Test Setup. V . I O O Efficiency = x 100 % η V . I IN IN October 2, 2015 ©2015 General Electric Company. All rights reserved. Page 10 BATTERY Input Ripple Voltage (mVp-p) Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –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 TM The Austin Lynx II 12VSMT module is designed for low output requirements of the end-use safety agency standards, i.e., UL ripple voltage and will meet the maximum output ripple 60950-1, CSA C22.2 No. 60950-1-03, and VDE 0850:2001-12 specification with 1 µF ceramic and 10 µF tantalum capacitors (EN60950-1) Licensed. at the output of the module. However, additional output filtering may be required by the system designer for a number For the converter output to be considered meeting the of reasons. First, there may be a need to further reduce the requirements of safety extra-low voltage (SELV), the input must 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 2, 2015 ©2015 General Electric Company. All rights reserved. Page 11 Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Feature Description VIN+ MODULE Remote On/Off R pull-up TM Austin Lynx II 12V SMT power modules feature an On/Off pin I ON/OFF for remote On/Off operation. Two On/Off logic options are ON/OFF TM available in the Austin Lynx II 12V series modules. Positive + PWM Enable Logic On/Off signal, device code suffix “4”, turns the module ON V ON/OFF R1 during a logic High on the On/Off pin and turns the module OFF during a logic Low. Negative logic On/Off signal, no device Q2 CSS code suffix, turns the module OFF during logic High and turns Q1 the module ON during logic Low. R2 For positive logic modules, the circuit configuration for using GND _ the On/Off pin is shown in Figure 27. The On/Off pin is an open collector/drain logic input signal (Von/Off) that is referenced to ground. During a logic-high (On/Off pin is pulled high internal Figure 28. Circuit configuration for using negative logic to the module) when the transistor Q1 is in the Off state, the On/OFF power module is ON. Maximum allowable leakage current of the transistor when Von/off = VIN,max is 10µA. Applying a logic- low when the transistor Q1 is turned-On, the power module is Overcurrent Protection OFF. During this state VOn/Off must be less than 0.3V. When To provide protection in a fault (output overload) condition, the not using positive logic On/off pin, leave the pin unconnected unit is equipped with internal current-limiting circuitry and can or tie to VIN. endure current limiting continuously. At the point of current-limit inception, the unit enters hiccup mode. The unit VIN+ MODULE operates normally once the output current is brought back into its specified range. The typical average output current during R2 hiccup is 3 A. ON/OFF Q2 Input Undervoltage Lockout + R1 V ON/OFF At input voltages below the input undervoltage lockout limit, I ON/OFF PWM Enable module operation is disabled. The module will begin to operate R3 at an input voltage above the undervoltage lockout turn-on threshold. Q1 Q3 CSS Overtemperature Protection R4 To provide over temperature protection in a fault condition, the unit relies upon the thermal protection feature of the controller GND _ IC. The unit will shutdown if the thermal reference point T , ref o exceeds 125 C (typical), but the thermal shutdown is not Figure 27. Remote On/Off Implementation. intended as a guarantee that the unit will survive temperatures beyond its rating. The module will automatically restart after it For negative logic On/Off devices, the circuit configuration is cools down. shown is Figure 28. The On/Off pin is pulled high with an external pull-up resistor (typical Rpull-up = 68k, +/- 5%). When transistor Q1 is in the Off state, logic High is applied to the On/Off pin and the power module is Off. The minimum On/off voltage for logic High on the On/Off pin is 2.5 Vdc. To turn the module ON, logic Low is applied to the On/Off pin by turning ON Q1. When not using the negative logic On/Off, leave the pin unconnected or tie to GND. October 2, 2015 ©2015 General Electric Company. All rights reserved. Page 12 Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current under the Design Tools section, helps determine the required Feature Descriptions (continued) external trim resistor needed for a specific output voltage. Output Voltage Programming TM The output voltage of the Austin Lynx II 12V can be The amount of power delivered by the module is defined as the programmed to any voltage from 0.75Vdc to 5.5Vdc by voltage at the output terminals multiplied by the output connecting a resistor (shown as Rtrim in Figure 29) between current. When using the trim feature, the output voltage of the Trim and GND pins of the module. Without an external resistor module can be increased, which at the same output current between Trim and GND pins, the output of the module will be would increase the power output of the module. Care should 0.7525Vdc. To calculate the value of the trim resistor, Rtrim for be taken to ensure that the maximum output power of the a desired output voltage, use the following equation: module remains at or below the maximum rated power (Pmax = V x I ). o,set o,max 10500   Rtrim= −1000Ω   Voltage Margining Vo− 0.7525   Output voltage margining can be implemented in the Austin TM Lynx II modules by connecting a resistor, Rmargin-up, from the For example, to program the output voltage of the Austin Trim pin to the ground pin for margining-up the output voltage TM Lynx II 12 V module to 1.8 Vdc, Rtrim is calculated is follows: and by connecting a resistor, Rmargin-down, from the Trim pin to the Output pin for margining-down. Figure 30 shows the 10500   Rtrim= −1000 circuit configuration for output voltage margining. The POL   1.8− 0.75   Programming Tool, available at www.gecriticalpower.com under the Design Tools section, also calculates the values of Rtrim= 9.024kΩ Rmargin-up and Rmargin-down for a specific output voltage and % margin. Please consult your local GE technical representative for additional details. V (+) V (+) IN O Vo LOAD Rmargin-down ON/OFF TRIM Austin Lynx or Lynx II Series Rtrim GND Q2 Trim Rmargin-up Figure 29. Circuit configuration for programming output Rtrim voltage using an external resistor. Q1 Table 1 provides Rtrim values required for some common output voltages GND Table 1 VO, set (V) Rtrim (KΩ) Figure 30. Circuit Configuration for margining Output 0.7525 Open voltage. 1.2 22.46 1.5 13.05 1.8 9.024 2.5 5.009 3.3 3.122 5.0 1.472 By using a 1% tolerance trim resistor, set point tolerance of ±2% is achieved as specified in the electrical specification. The POL Programming Tool, available at www.gecriticalpower.com October 2, 2015 ©2015 General Electric Company. All rights reserved. Page 13 Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current using Remote Sense, the output voltage of the module can Feature Descriptions (continued) increase, which if the same output is maintained, increases the Voltage Sequencing power output by the module. Make sure that the maximum output power of the module remains at or below the maximum TM Austin Lynx II series of modules include a sequencing feature, rated power. When the Remote Sense feature is not being EZ-SEQUENCE that enables users to implement various types of used, connect the Remote Sense pin to the output pin. output voltage sequencing in their applications. This is accomplished via an additional sequencing pin. When not using the sequencing feature, either tie the SEQ pin to VIN or R R R R distribution contact contact distribution V (+) V IN O leave it unconnected. Sense R When an analog voltage is applied to the SEQ pin, the output LOAD voltage tracks this voltage until the output reaches the set- point voltage. The SEQ voltage must be set higher than the R R R R distribution contact contact distribution COM COM set-point voltage of the module. The output voltage follows the voltage on the SEQ pin on a one-to-one volt basis. By connecting multiple modules together, customers can get Figure 31. Remote sense circuit configuration multiple modules to track their output voltages to the voltage applied on the SEQ pin. For proper voltage sequencing, first, input voltage is applied to the module. The On/Off pin of the module is left unconnected (or tied to GND for negative logic modules or tied to VIN for positive logic modules) so that the module is ON by default. After applying input voltage to the module, a minimum of 10msec delay is required before applying voltage on the SEQ pin. During this time, potential of 50mV (± 10 mV) is maintained on the SEQ pin. After 10msec delay, an analog voltage is applied to the SEQ pin and the output voltage of the module will track this voltage on a one-to-one volt bases until output reaches the set-point voltage. To initiate simultaneous shutdown of the modules, the SEQ pin voltage is lowered in a controlled manner. Output voltage of the modules tracks the voltages below their set-point voltages on a one-to-one basis. A valid input voltage must be maintained until the tracking and output voltages reach ground potential. TM When using the EZ-SEQUENCE feature to control start-up of the module, pre-bias immunity feature during start-up is disabled. The pre-bias immunity feature of the module relies on the module being in the diode-mode during start-up. When TM using the EZ-SEQUENCE feature, modules goes through an internal set-up time of 10msec, and will be in synchronous rectification mode when voltage at the SEQ pin is applied. This will result in sinking current in the module if pre-bias voltage is present at the output of the module. When pre-bias immunity TM during start-up is required, the EZ-SEQUENCE feature must be disabled. For additional guidelines on using EZ- TM TM SEQUENCE feature of Austin Lynx II, contact the GE technical representative for preliminary application note on output voltage sequencing using Austin Lynx II series. Remote Sense TM The Austin Lynx SMT 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 31). 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 October 2, 2015 ©2015 General Electric Company. All rights reserved. Page 14 Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –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 33. Note that the airflow is parallel to the short axis of the module as shown in figure 32. The derating data applies to airflow in either 76.2_ direction of the module’s short axis. (3.0) x Probe Location for measuring 8.3_ airflow and (0.325) ambient temperature Air flow Figure 33. Thermal Test Set-up. Heat Transfer via Convection Figure 32. 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, Tref used in the specifications is local ambient temperatures (T ) for airflow conditions ranging A shown in Figure 32. 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 2, 2015 ©2015 General Electric Company. All rights reserved. Page 15 Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –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.) Top View Co-planarity (max): 0.20 [0.008] Side View Bottom View PIN FUNCTION 1 On/Off 2 VIN 3 SEQ 4 GND 5 VOUT 6 Trim 7 Sense MPS176595 October 2, 2015 ©2015 General Electric Company. All rights reserved. Page 16 Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –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 2, 2015 ©2015 General Electric Company. All rights reserved. Page 17 Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Packaging Details TM The Austin Lynx II 12 V 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 2, 2015 ©2015 General Electric Company. All rights reserved. Page 18 Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –14Vdc input; 0.75Vdc to 5.5Vdc output; 10A Output Current Surface Mount Information and subsequently wicks the device connection. Sufficient Pick and Place time must be allowed to fuse the plating on the connection TM The Austin Lynx II 12 V SMT modules use an open frame to ensure a reliable solder joint. There are several types of construction and are designed for a fully automated SMT reflow technologies currently used in the industry. assembly process. The modules are fitted with a label These surface mount power modules can be reliably designed to provide a large surface area for pick and place soldered using natural forced convection, IR (radiant operations. The label meets all the requirements for surface infrared), or a combination of convection/IR. For reliable mount processing, as well as safety standards, and is able to soldering the solder reflow profile should be established by o withstand reflow temperatures of up to 300 C. The label accurately measuring the modules CP connector also carries product information such as product code, serial temperatures. number and the location of manufacture. REFLOW TIME (S) Figure 35. Reflow Profile for Tin/Lead (Sn/Pb) process. Figure 34. Pick and Place Location. 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 36. Time Limit Curve Above 205 C for Tin/Lead (Sn/Pb) process. Tin Lead Soldering TM The Austin Lynx II 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. o Typically, the eutectic solder melts at 183 C, wets the land, October 2, 2015 ©2015 General Electric Company. All rights reserved. Page 19 MAX TEMP SOLDER (°C) REFLOW TEMP (°C) Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –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 Austin Lynx II 12V 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 Fig. 37. MSL Rating The Austin Lynx II 12V SMT modules have a MSL rating of 3. Storage and Handling The Austin Lynx II 12V SMT modules have a MSL rating of 2. 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 2, 2015 ©2015 General Electric Company. All rights reserved. Page 20 Reflow Temp (°C) Data Sheet GE TM 12V Austin Lynx II: SMT Non-Isolated DC-DC Power Modules 8.3Vdc –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 Efficiency Connector Device Code Voltage Range Comcodes Voltage Current 3.3V@ 10A Type 0.75 – 5.5Vdc ATA010A0X3-SR 8.3 – 14Vdc 10 A 93.0% SMT 108987538 0.75 – 5.5Vdc ATA010A0X3-SRZ 8.3 – 14Vdc 10 A 93.0% SMT CC109104675 0.75 – 5.5Vdc ATA010A0X43-SR 8.3 – 14Vdc 10 A 93.0% SMT 108988341 0.75 – 5.5Vdc ATA010A0X43-SRZ 8.3 – 14Vdc 10 A 93.0% SMT 108996674 -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 2, 2015 ©2015 General Electric Company. All International rights reserved. Version 1.28