Data Sheet GE TM Austin Lynx II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc – 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) TM  Flexible output voltage sequencing EZ-SEQUENCE  Delivers up to 10A output current  High efficiency – 95% at 3.3V full load (V = 5.0V) IN TM EZ-SEQUENCE  Small size and low profile: 50.8 mm x 12.7 mm x 8.1 mm Applications  (2.00 in x 0.50 in x 0.32 in)  Distributed power architectures  Low output ripple and noise  Intermediate bus voltage applications  High Reliability: o  Telecommunications equipment Calculated MTBF = 15.7M hours at 25 C Full-load  Constant switching frequency (300 kHz)  Servers and storage applications  Output voltage programmable from 0.75 Vdc to  Networking equipment 3.63Vdc via external resistor  Enterprise Networks  Line Regulation: 0.3% (typical)  Latest generation IC’s (DSP, FPGA, ASIC) and  Load Regulation: 0.4% (typical) Microprocessor powered applications  Temperature Regulation: 0.4 % (typical)  Remote On/Off  Remote sense  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 II 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 TM an external resistor from 0.75Vdc to 3.63Vdc over a wide range of input voltage (VIN = 2.4 – 5.5Vdc). The Austin Lynx II TM 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. * 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 Austin Lynx II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –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 V -0.3 5.8 Vdc IN Continuous Sequencing voltage All Vseq -0.3 V Vdc IN,max Operating Ambient Temperature All T -40 85 °C A (see Thermal Considerations section) Storage Temperature All T -55 125 °C stg Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Parameter Device Symbol Min Typ Max Unit Operating Input Voltage Vo ≤ V - 0.5 V 2.4 5.5 Vdc IN IN  Maximum Input Current All IIN,max 10 Adc (VIN=2.4V to 5.5V, IO=IO, max ) Input No Load Current Vo = 0.75Vdc IIN,No load 25 mA (VIN = 5.0Vdc, IO = 0, module enabled) Vo = 3.3Vdc IIN,No load 30 mA Input Stand-by Current All I 1.5 mA IN,stand-by (VIN = 5.0Vdc, module disabled) 2 2 Inrush Transient All I t 0.1 A s Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1μH source impedance; VIN, min to VIN, All 100 mAp-p max, IO= IOmax ; See Test Configurations) 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 2, 2015 ©2015 General Electric Company. All rights reserved. Page 2 Data Sheet GE TM Austin Lynx II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –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% +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  3.0  Adc (VO≤250mV) ( Hiccup Mode ) VO,set = Efficiency η 82.5 % 0.75Vdc V = O, set VIN= VIN, nom, TA=25°C η 88.0 % 1.2Vdc VO,set = I =I V = V η 89.5 % O O, max , O O,set 1.5Vdc V = O,set η 91.0 % 1.8Vdc VO,set = η 93.0 % 2.5Vdc V = O,set η 95.0 % 3.3Vdc Switching Frequency All f 300 kHz sw   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 t  25  µs s (dIo/dt=2.5A/µs; V = V ; T =25°C) All V  200  mV IN IN, nom A 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 ts  25  µs October 2, 2015 ©2015 General Electric Company. All rights reserved. Page 3 Data Sheet GE TM Austin Lynx II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –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 (IO=IO, max, TA=25°C) 15,726,300 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 Austin Lynx II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –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 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 1.5 ― V Vdc IN,max 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 (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) 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 | 200 400 mV (VIN, min to VIN, max; IO, min to IO, max VSEQ < Vo) 1 Output voltage overshoot – Startup ― % V O, set o IO= IO, max; VIN = 2.4 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 2, 2015 ©2015 General Electric Company. All rights reserved. Page 5 Data Sheet GE TM Austin Lynx II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –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 II SIP modules at 25ºC. 90 96 IN V = 3.0V 93 87 90 84 87 81 84 81 78 IN V = 3.0V 78 IN V = 5.0V VIN = 5.0V 75 75 VIN = 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 (Vout = 0.75Vdc). = 1.8Vdc). 93 100 97 90 94 87 91 84 88 85 81 VIN = 3.0V 82 78 IN V = 3.0V VIN = 5.0V 79 VIN = 5.0V 75 76 VIN = 5.5V IN V = 5.5V 72 73 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 (Vout = 1.2Vdc). = 2.5Vdc). 94 100 91 97 94 88 91 85 88 82 85 79 IN V = 4.5V IN V = 3.0V 82 76 IN V = 5.0V VIN = 5.0V 79 73 IN V = 5.5V IN 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 Figure3. Converter Efficiency versus Output Current (Vout Figure 6. Converter Efficiency versus Output Current (Vout = 1.5Vdc). = 3.3Vdc). 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 Austin Lynx II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –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 II 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, V (V) IN 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 Figure 11. Transient Response to Dynamic Load Change from 100% to 50% of full load (Vo = 3.3 Vdc). (Vin = 5.0V dc, Vo = 0.75, Vdc, Io=10A). TIME, t (2µs/div) TIME, t (20µs/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 = 5.0V dc, Vo = 3.3 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) (5A/div) VO (V) (200mV/div) IO (A) (5A/div) VO (V) (200mV/div) IO (A) (5A/div) VO (V) (200mV/div) Data Sheet GE TM Austin Lynx II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –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 II SIP 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 = 5.0Vdc, 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, ESR external capacitors (Vin = 5.5Vdc, Vo = 3.3Vdc, Io = Vo = 0.75Vdc). 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, 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 II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –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 II 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 Ambient Temperature and Airflow (Vin = 5.0, Vo=0.75Vdc). Temperature and Airflow (Vin = 5.0dc, 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 Ambient Temperature and Airflow (Vin = 5.0Vdc, Vo=1.8 Vdc). 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 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) OUTPUT CURRENT, Io (A) Data Sheet GE TM Austin Lynx II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –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 II 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 2x100μF E.S.R.<0.1Ω Tantalum @ 20°C 100kHz To minimize input voltage ripple, low-ESR polymer and ceramic capacitors are recommended at the input of the module. COM Figure 27 shows input ripple voltage (mVp-p) for various outputs with 1x150 µF polymer capacitors (Panasonic p/n: NOTE: Measure input reflected ripple current with a simulated source inductance (L ) of 1μH. Capacitor C offsets TEST S EEFUE0J151R, Sanyo p/n: 6TPE150M) in parallel with 1 x 47 µF possible battery impedance. Measure current as shown ceramic capacitor (Panasonic p/n: ECJ-5YB0J476M, Taiyo- above. Yuden p/n: CEJMK432BJ476MMT) at full load. Figure 28 shows Figure 24. Input Reflected Ripple Current Test Setup. the input ripple with 3x150 µF polymer capacitors in parallel with 2 x 47 µF ceramic capacitor at full load. COPPER STRIP 80 3.3Vin V (+) RESISTIVE O 70 LOAD 5Vin 1uF . 10uF 60 SCOPE COM 50 40 GROUND PLANE 30 NOTE: All voltage measurements to be taken at the module terminals, as shown above. If sockets are used then 20 Kelvin connections are required at the module terminals to avoid measurement errors due to socket contact resistance. 10 Figure 25. Output Ripple and Noise Test Setup. 0 0 0.5 1 1.5 2 2.5 3 3.5 Rdistribution Rcontact Rcontact Rdistribution Output Voltage (Vdc) VIN(+) VO Figure 27. Input ripple voltage for various output with 1x150 µF polymer and 1x47 µF ceramic capacitors at the input (full load) RLOAD V V IN O 80 3.3Vin R R R R distribution contact contact distribution 70 COM COM 5Vin 60 NOTE: All voltage measurements to be taken at the module 50 terminals, as shown above. If sockets are used then Kelvin connections are required at the module terminals 40 to avoid measurement errors due to socket contact resistance. 30 Figure 26. Output Voltage and Efficiency Test Setup. 20 10 V . I O O 0 Efficiency = x 100 % η 0 0.5 1 1.5 2 2.5 3 3.5 V . I IN IN Output Voltage (Vdc) Figure 28. Input ripple voltage for various output with 3x150 µF polymer and 2x47 µF ceramic capacitors at the input (full load) October 2, 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 II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –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 II SIP 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 of reasons. First, there may be a need to further reduce the For the converter output to be considered meeting the output ripple and noise of the module. Second, the dynamic requirements of safety extra-low voltage (SELV), the input must response characteristics may need to be customized to a meet SELV requirements. The power module has extra-low particular load step change. voltage (ELV) outputs when all inputs are ELV. The input to these units is to be provided with a fast-acting To reduce the output ripple and improve the dynamic response fuse with a maximum rating of 15A in the positive input lead. 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 Austin Lynx II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current Feature Description VIN+ MODULE Remote On/Off R pull-up TM The Austin Lynx II SIP 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 series modules. Positive Logic + PWM Enable 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 code suffix, turns the module OFF during logic High on the Q2 CSS Q1 On/Off pin and turns the module ON during logic Low. R2 For positive logic modules, the circuit configuration for using the On/Off pin is shown in Figure 29. The On/Off pin is an open GND _ collector/drain logic input signal (Von/Off) that is referenced to ground. During a logic-high (On/Off pin is pulled high internal Figure 30. 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+ operates normally once the output current is brought back into MODULE its specified range. The typical average output current during R2 hiccup is 3.0A. 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 protection in a fault condition, the unit is equipped with a thermal shutdown circuit. The unit will GND _ o shutdown if the thermal reference point T , exceeds 125 C ref (typical), but the thermal shutdown is not intended as a Figure 29. Circuit configuration for using positive logic guarantee that the unit will survive temperatures beyond its On/OFF. rating. The module will automatically restarts after it cools down. For negative logic On/Off devices, the circuit configuration is shown is Figure 30. The On/Off pin is pulled high with an external pull-up resistor (typical Rpull-up = 5k, +/- 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 1.5Vdc. 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 Austin Lynx II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current The amount of power delivered by the module is defined as the Feature Descriptions (continued) voltage at the output terminals multiplied by the output current. When using the trim feature, the output voltage of the Output Voltage Programming module can be increased, which at the same output current TM The output voltage of the Austin Lynx II SIP can be would increase the power output of the module. Care should programmed to any voltage from 0.75 Vdc to 3.3 Vdc by be taken to ensure that the maximum output power of the connecting a single resistor (shown as Rtrim in Figure 31) module remains at or below the maximum rated power (Pmax = between the TRIM and GND pins of the module. Without an Vo,set x Io,max). external resistor between the TRIM pin and the ground, the Voltage Margining output voltage of the module is 0.7525 Vdc. To calculate the value of the resistor Rtrim for a particular output voltage Vo, Output voltage margining can be implemented in the Austin use the following equation: TM Lynx II SIP modules by connecting a resistor, R , from margin-up the Trim pin to the ground pin for margining-up the output  21070  voltage and by connecting a resistor, R , from the Trim Rtrim= − 5110Ω margin-down   Vo− 0.7525   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 For example, to program the output voltage of the Austin TM under the Design Tools section, also calculates the values of Lynx II module to 1.8 Vdc, Rtrim is calculated is follows: Rmargin-up and Rmargin-down for a specific output voltage and % 21070   margin. Please consult your local GE technical representative Rtrim= − 5110Ω   1.8− 0.7525 for additional details.   Vo Rtrim= 15.004kΩ Rmargin-down V (+) V (+) Austin Lynx or IN O Lynx II Series Q2 Trim LOAD ON/OFF TRIM Rmargin-up R trim Rtrim GND Q1 Figure 31. Circuit configuration to program output voltage GND using an external resistor. Table 1 provides Rtrim values required for some common output voltages. Figure 32. Circuit Configuration for margining Output Table 1 voltage. V (V) Rtrim (KΩ) O, 0.7525 Open 1.2 41.973 1.5 23.077 1.8 15.004 2.5 6.947 3.3 3.160 By a using 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 under the Design Tools section, helps determine the required external trim resistor needed for a specific output voltage. October 2, 2015 ©2015 General Electric Company. All rights reserved. Page 13 Data Sheet GE TM Austin Lynx II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current 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 Feature Descriptions (continued) output voltage multiplied by the output current (Vo x Io). When Voltage Sequencing using Remote Sense, the output voltage of the module can TM The Austin Lynx II series of modules include a sequencing increase, which if the same output is maintained, increases the TM feature, EZ-SEQUENCE that enables users to implement power output by the module. Make sure that the maximum various types of output voltage sequencing in their output power of the module remains at or below the maximum applications. This is accomplished via an additional rated power. When the Remote Sense feature is not being sequencing pin. When not using the sequencing feature, either used, connect the Remote Sense pin to output pin of the tie the SEQ pin to VIN or leave it unconnected. module. When an analog voltage is applied to the SEQ pin, the output R R R R distribution contact contact distribution VIN(+) VO voltage tracks this voltage until the output reaches the set- point voltage. The SEQ voltage must be set higher than the Sense set-point voltage of the module. The output voltage follows the R LOAD voltage on the SEQ pin on a one-to-one volt basis. By connecting multiple modules together, customers can get Rdistribution Rcontact Rcontact Rdistribution multiple modules to track their output voltages to the voltage COM COM applied on the SEQ pin. Figure 33. Remote sense circuit configuration. 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 II 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). October 2, 2015 ©2015 General Electric Company. All rights reserved. Page 14 Data Sheet GE TM Austin Lynx II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current Thermal Considerations 25.4_ Power modules operate in a variety of thermal environments; Wind Tunnel (1.0) however, sufficient cooling should always be provided to help ensure reliable operation. PWBs Considerations include ambient temperature, airflow, module Power 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 35. Note that the airflow is parallel to the long axis of the module as shown in 76.2_ figure 34. The derating data applies to airflow in either (3.0) direction of the module’s long axis. x Probe Location for measuring 8.3_ airflow and (0.325) ambient temperature Air flow Figure 35. Thermal Test Set-up. Figure 34. T Temperature measurement location. ref used in the specifications is The thermal reference point, Tref shown in Figure 34. For reliable operation this temperature o should not exceed 115 C. 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. Heat Transfer via Convection 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 local ambient temperature (T ) for airflow conditions ranging A from natural convection and up to 2m/s (400 ft./min) are shown in the Characteristics Curves section. October 2, 2015 ©2015 General Electric Company. All rights reserved. Page 15 Data Sheet GE TM Austin Lynx II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –5.5Vdc input; 0.75Vdc to 3.63Vdc output; 10A Output Current 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. Through-Hole Lead-Free Soldering Information The RoHS-compliant through-hole products use the SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant components. They are designed to be processed through single or dual wave soldering machines. The pins have an RoHS-compliant finish that is compatible with both Pb and Pb-free wave soldering processes. A maximum preheat rate of 3°C/s is suggested. The wave preheat process should be such that the temperature of the power module board is kept below 210°C. For Pb solder, the recommended pot temperature is 260°C, while the Pb-free solder pot is 270°C max. Not all RoHS-compliant through-hole products can be processed with paste-through-hole Pb or Pb- free reflow process. If additional information is needed, please consult with your GE technical representative for more details. October 2, 2015 ©2015 General Electric Company. All rights reserved. Page 16 Data Sheet GE TM Austin Lynx II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –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.) Front View Side View Back View PIN FUNCTION 1 Vo 2 Vo 3 Sense+ 4 Vo 5 GND 6 GND 7 VIN 8 VIN B SEQ 9 Trim 10 On/Off October 2, 2015 ©2015 General Electric Company. All rights reserved. Page 17 Data Sheet GE TM Austin Lynx II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –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 Sense+ 4 Vo 5 GND 6 GND 7 VIN 8 VIN B SEQ 9 Trim 10 On/Off Module Layout – Back view October 2, 2015 ©2015 General Electric Company. All rights reserved. Page 18 Data Sheet GE TM Austin Lynx II: SIP Non-Isolated DC-DC Power Modules 2.4Vdc –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 Device Code Comcodes Range Voltage Current 3.3V@ 10A Type ATH010A0X3 2.4 – 5.5Vdc 0.75 – 3.63Vdc 10 A 95.0% SIP 108989075 ATH010A0X43 2.4 – 5.5Vdc 0.75 – 3.63Vdc 10 A 95.0% SIP 108989083 ATH010A0X3Z 2.4 – 5.5Vdc 0.75 – 3.63Vdc 10 A SIP CC109104733 95.0% ATH010A0X43Z 2.4 – 5.5Vdc 0.75 – 3.63Vdc 10 A SIP CC109104741 95.0% -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 1.26