Data Sheet March 14, 2006 Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14Vdc input; 1.2Vdc to 5.5Vdc Output; 10A Output Current RoHS Compliant Features Compliant to RoHS EU Directive 2002/95/EC (-Z versions) Compliant to ROHS EU Directive 2002/95/EC with lead solder exemption (non-Z versions) Delivers up to 10A of output current High efficiency - 93% at 3.3V full load (VIN = 12.0V) Small size and low profile: 33.00 mm x 13.46 mm x 8.28 mm (1.300 in x 0.530 in x 0.326 in) Low output ripple and noise High Reliability: o Calculated MTBF = 4.4 M hours at 25 C Full-load Applications Line Regulation: 0.3% (typical) Distributed power architectures Load Regulation: 0.4% (typical) Intermediate bus voltage applications Temperature Regulation: 0.4% (typical) Telecommunications equipment Remote On/Off Servers and storage applications Remote Sense Networking equipment Output overcurrent protection (non-latching) Overtemperature protection Wide operating temperature range (-40C to 85C) 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 Austin LynxTM 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 ranging from 1.2Vdc to 5.5Vdc over a wide range of input voltage (VIN = 10 - 14Vdc). Their open-frame construction and small footprint enable designers to develop cost- and space-efficient solutions. Standard features include remote On/Off, remote sense, output voltage adjustment, overcurrent and overtemperature protection. * UL is a registered trademark of Underwriters Laboratories, Inc. CSA is a registered trademark of Canadian Standards Association. VDE is a trademark of Verband Deutscher Elektrotechniker e.V. ** ISO is a registered trademark of the International Organization of Standards Document No: DS03-079 ver. 1.2 PDF name: austin lynx smt 12v.pdf Data Sheet March 14, 2006 Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14Vdc input; 1.2Vdc 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 All VIN -0.3 15 Vdc All TA -40 85 C All Tstg -55 125 C Input Voltage Continuous Operating Ambient Temperature (see Thermal Considerations section) Storage Temperature Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Parameter Device Symbol Min Typ Max Unit Operating Input Voltage All VIN 10 12.0 14.0 Vdc Maximum Input Current All IIN,max 6.5 Adc VO,set = 0.75 Vdc IIN,No load 40 mA VO,set = 5.0Vdc IIN,No load 100 mA All IIN,stand-by 2.0 mA Inrush Transient All I 2t Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 1H source impedance; VIN, min to VIN, max, IO= IOmax ; See Test configuration section) All 20 Input Ripple Rejection (120Hz) All 30 (VIN= VIN, min to VIN, max, IO=IO, max VO,set = 3.3Vdc) Input No Load Current (VIN = 12.0Vdc, IO = 0, module enabled) Input Stand-by Current (VIN = 12.0Vdc, module disabled) 0.4 A2s mAp-p 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 fastacting 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. Data Sheet March 14, 2006 Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14 Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current Electrical Specifications (continued) Parameter Output Voltage Set-point Device Symbol Min Typ Max Unit All VO, set -2.0 +2.0 % VO, set All VO, set -2.5% +3.5% % VO, set All VO -10 10 % VO, set (VIN=IN, min, IO=IO, max, TA=25C) Output Voltage (Over all operating input voltage, resistive load, and temperature conditions until end of life) Adjustment Range Selected by an external resistor Output Regulation Line (VIN=VIN, min to VIN, max) All 0.3 % VO, set Load (IO=IO, min to IO, max) All 0.4 % VO, set Temperature (Tref =TA, min to TA, max) All 0.4 % VO, set RMS (5Hz to 20MHz bandwidth) All 12 15 mVrms Peak-to-Peak (5Hz to 20MHz bandwidth) All 30 50 mVpk-pk Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max Cout = 1F ceramic//10Ftantalum capacitors) External Capacitance ESR 1 m All CO, max 1000 F ESR 10 m All CO, max 5000 F Output Current All Io 0 10 Adc Output Current Limit Inception (Hiccup Mode ) All IO, lim 200 % Io Output Short-Circuit Current All IO, s/c 3 Adc (VO250mV) ( Hiccup Mode ) Efficiency VIN= VIN, nom, TA=25C IO=IO, max , VO= VO,set Switching Frequency VO, set = 1.2Vdc 87.5 % VO,set = 1.5Vdc 89.0 % VO,set = 1.8Vdc 90.0 % VO,set = 2.5Vdc 92.0 % VO,set = 3.3Vdc 93.0 % VO,set = 5.0Vdc 95.0 % All fsw 300 kHz All Vpk 200 mV Dynamic Load Response (dIo/dt=2.5A/s; VIN = VIN, nom; TA=25C) Load Change from Io= 50% to 100% of Io,max; 1F ceramic// 10 F tantalum Peak Deviation Settling Time (Vo<10% peak deviation) All ts 25 s (dIo/dt=2.5A/s; VIN = VIN, nom; TA=25C) All Vpk 200 mV All ts 25 s Load Change from Io= 100% to 50%of Io,max: 1F ceramic// 10 F tantalum Peak Deviation Settling Time (Vo<10% peak deviation) Tyco Electronics Power Systems 3 Data Sheet March 14, 2006 Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current Electrical Specifications (continued) Parameter Device Symbol Min Typ Max Unit (dIo/dt=2.5A/s; V VIN = VIN, nom; TA=25C) Load Change from Io= 50% to 100% of Io,max; Co = 2x150 F polymer capacitors Peak Deviation All Vpk 100 mV Settling Time (Vo<10% peak deviation) All ts 25 s (dIo/dt=2.5A/s; VIN = VIN, nom; TA=25C) Load Change from Io= 100% to 50%of Io,max: Co = 2x150 F polymer capacitors Peak Deviation All Vpk 100 mV Settling Time (Vo<10% peak deviation) All ts 25 s Dynamic Load Response General Specifications Parameter Min Calculated MTBF (IO=IO, max, TA=25C) Weight 4 Typ Max 4,400,000 5.6 (0.2) Unit Hours g (oz.) Tyco Electronics Power Systems Data Sheet March 14, 2006 Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14 Vdc input; 1.2Vdc 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 Von/Off All VIH 14 V Ion/Off All IIH 10 A Von/Off All VIL 0.3 V Ion/off All IIL 1 mA All Tdelay 3 msec All Tdelay 3 msec All Trise Remote On/Off Signal interface (VIN=VIN, min to VIN, max; Open collector npn or equivalent Compatible, Von/off signal referenced to GND See feature description section) Logic High (On/Off Voltage pin open - Module ON) Logic Low (Von/Off 0.3V - Module Off) Turn-On Delay and Rise Times (IO=IO, max , VIN = VIN, nom, TA = 25 oC, ) 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) 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) Output voltage Rise time (time for Vo to rise from 10% of Vo,set to 90% of Vo, set) 4 6 msec 1 % VO, set 0.5 V 125 C Output voltage overshoot - Startup IO= IO, max; VIN = 3.0 to 5.5Vdc, TA = 25 oC Remote Sense Range Overtemperature Protection All All Tref (See Thermal Consideration section) Input Undervoltage Lockout Turn-on Threshold All 8.2 V Turn-off Threshold All 8.0 V Tyco Electronics Power Systems 5 Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current Data Sheet March 14, 2006 Characteristic Curves TM 90 94 88 92 86 90 84 88 EFFICIENCY, (%) EFFICIENCY, (%) The following figures provide typical characteristics for the Austin Lynx 82 80 78 76 Vin=14V 74 Vin=12V 72 Vin=10V 70 0 2 4 6 8 12 V SMT modules at 25C. 86 84 82 80 Vin=14V 78 Vin=12V 76 Vin=10V 74 10 0 2 OUTPUT CURRENT, IO (A) Figure 1. Converter Efficiency versus Output Current (Vout =1.2Vdc). 92 95 90 93 EFFICIENCY, (%) EFFICIENCY, (%) 8 10 91 86 84 82 80 Vin=14V 78 Vin=12V 76 Vin=10V 74 0 2 4 6 8 89 87 Vin=14V 85 Vin=12V 83 Vin=10V 81 79 77 10 0 2 OUTPUT CURRENT, IO (A) 4 6 8 10 OUTPUT CURRENT, IO (A) Figure 2. Converter Efficiency versus Output Current (Vout = 1.5Vdc). Figure 5. Converter Efficiency versus Output Current (Vout = 3.3Vdc). 92 96 90 94 92 EFFICIENCY, (%) 88 EFFICIENCY, (%) 6 Figure 4. Converter Efficiency versus Output Current (Vout = 2.5Vdc). 88 86 84 82 Vin=14V 80 Vin=12V 78 Vin=10V 76 90 Vin=14V 88 Vin=12V 86 Vin=10V 84 82 80 78 0 2 4 6 8 10 OUTPUT CURRENT, IO (A) Figure3. Converter Efficiency versus Output Current (Vout = 1.8Vdc). 6 4 OUTPUT CURRENT, IO (A) 0 2 4 6 8 10 OUTPUT CURRENT, IO (A) Figure 6. Converter Efficiency versus Output Current (Vout = 5.0Vdc). Tyco Electronics Corp. Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14 Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current Data Sheet March 14, 2006 Characteristic Curves (continued) 7 8 9 10 11 12 INPUT VOLTAGE, VIN (V) VO (V) (20mV/div) OUTPUT VOLTAGE Figure 7. Input voltage vs. Input Current (Vout = 3.3Vdc). TIME, t (2s/div) VO (V) (20mV/div) OUTPUT VOLTAGE Figure 8. Typical Output Ripple and Noise (Vin = 12.0V dc, Vo = 2.5 Vdc, Io=10A). TIME, t (2s/div) Figure 9. Typical Output Ripple and Noise (Vin = 12.0V dc, Vo = 5.0 Vdc, Io=10A). Tyco Electronics Power Systems 13 14 VO (V) (200mV/div) IO (A) (2A/div) 0 12 V SMT modules at 25C. TIME, t (5 s/div) Figure 10. Transient Response to Dynamic Load Change from 50% to 100% of full load (Vo = 3.3Vdc). VO (V) (200mV/div) 1 IO (A) (2A/div) 2 OUTPUT CURRENT, OUTPUT VOLTAGE Io=0 A 3 TM TIME, t (5 s/div) Figure 11. Transient Response to Dynamic Load Change from 100% to 50% of full load (Vo = 3.3 Vdc). VO (V) (200mV/div) Io =5A 4 IO (A) (5A/div) INPUT CURRENT, IIN (A) Io = 10 A 5 OUTPUT CURRENT, OUTPUT VOLTAGE 6 OUTPUT CURRENT, OUTPUT VOLTAGE The following figures provide typical characteristics for the Austin Lynx TIME, t (10s/div) Figure 12. Transient Response to Dynamic Load Change from 50% to 100% of full load (Vo = 3.3 Vdc, Cext = 2x150 F Polymer Capacitors). 7 Data Sheet March 14, 2006 Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current Characteristic Curves (continued) TIME, t (1 ms/div) Figure 15. Typical Start-Up Using Remote On/Off with Low-ESR external capacitors (Co= 5000 F) (Vin = 12.0Vdc, Vo = 5.0Vdc, Io = 10.0A, Co = 1050 F). 8 INPUT VOLTAGE VIN (V) (5V/div) OUTPUT VOLTAGE Vo (V) (1V/div) VOn/off (V) (2V/div) TIME, t (2 ms/div) Figure 17 Typical Start-Up Using Remote On/Off with Prebias (Vin = 12.0Vdc, Vo = 2.5Vdc, Io = 1.0A, Vbias =1.2Vdc). OUTPUT CURRENT, VO (1V/div) VOn/off (V) (5V/div) On/Off VOLTAGE OUTPUT VOLTAGE Figure 14. Typical Start-Up Using Remote On/Off (Vin = 12.0Vdc, Vo = 5.0Vdc, Io = 10.0A). On/Off VOLTAGE TIME, t (1 ms/div) Figure 16. Typical Start-Up with application of Vin with low-ESR polymer capacitors at the output (7x150 F) (Vin = 12Vdc, Vo = 5.0Vdc, Io = 10A, Co = 1050 F). VOV) (1V/div) VOV) (1V/div) VOn/off (V) (5V/div) On/Off VOLTAGE OUTPUT VOLTAGE Figure 13. Transient Response to Dynamic Load Change from 100% of 50% full load (Vo = 3.3 Vdc, Cext = 2x150 F Polymer Capacitors). 12 V SMT modules at 25C. TIME, t (2 ms/div) OUTPUT VOLTAGE TIME, t (10s/div) TM IO (A) (10A/div) OUTPUT CURRENT, OUTPUTVOLTAGE IO (A) (5A/div) VO (V) (200mV/div) The following figures provide typical characteristics for the Austin Lynx TIME, t (10ms/div) Figure 18. Output short circuit Current (Vin = 12.0Vdc, Vo = 0.75Vdc). Tyco Electronics Power Systems Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14 Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current Data Sheet March 14, 2006 Characteristic Curves (continued) TM The following figures provide thermal derating curves for the Austin Lynx 9 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 OUTPUT CURRENT, Io (A) 11 10 OUTPUT CURRENT, Io (A) 11 10 12 V SMT modules. 8 7 6 NC 5 100 LFM 4 200 LFM 3 300 LFM 2 1 400 LFM 0 20 30 40 50 60 70 80 90 O AMBIENT TEMPERATURE, TA C AMBIENT TEMPERATURE, TA C Figure 19. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 12.0 Vdc, Vo=0.75Vdc). Figure 22. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 12.0 Vdc, Vo=5.0 Vdc). 11 OUTPUT CURRENT, Io (A) 10 9 8 7 6 NC 5 100 LFM 4 200 LFM 3 300 LFM 2 400 LFM 1 0 20 30 40 50 60 70 80 90 O AMBIENT TEMPERATURE, TA C Figure 20. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 12.0Vdc, Vo=1.8 Vdc). 11 OUTPUT CURRENT, Io (A) 10 9 8 7 6 NC 5 100 LFM 4 200 LFM 3 300 LFM 2 1 400 LFM 0 20 30 40 50 60 70 80 90 AMBIENT TEMPERATURE, TA OC Figure 21. Derating Output Current versus Local Ambient Temperature and Airflow (Vin = 12.0Vdc, Vo=3.3 Vdc). Tyco Electronics Power Systems 9 Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current Data Sheet March 14, 2006 Test Configurations Design Considerations CURRENT PROBE TO OSCILLOSCOPE VIN(+) BATTERY CIN CS 1000F Electrolytic 2x100F Tantalum E.S.R.<0.1 @ 20C 100kHz COM NOTE: Measure input reflected ripple current with a simulated source inductance (LTEST) of 1H. Capacitor CS offsets possible battery impedance. Measure current as shown above. Figure 23. Input Reflected Ripple Current Test Setup. COPPER STRIP In a typical application, 4x47 F low-ESR tantalum capacitors (AVX part #: TPSE476M025R0100, 47F 25V 100 m ESR tantalum capacitor) will be sufficient to provide adequate ripple voltage at the input of the module. To minimize ripple voltage at the input, low ESR ceramic capacitors are recommended at the input of the module. Figure 26 shows input ripple voltage (mVpp) for various outputs with 4x47 F tantalum capacitors and with 4x22 F ceramic capacitor (TDK part #: C4532X5R1C226M) at full load. RESISTIVE LOAD 1uF . 10uF 300 SCOPE COM GROUND PLANE 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 24. Output Ripple and Noise Test Setup. Rdistribution Rcontact Rcontact VIN(+) RLOAD VO VIN Rdistribution Rcontact Rcontact COM Rdistribution VO Rdistribution 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. VO. IO Efficiency = VIN. IIN x 100 % Input Ripple Voltage (mVp-p) V O (+) TM Austin Lynx 12V SMT module should be connected to a low-impedance source. A highly inductive source can affect the stability of the module. An input capacitance must be placed directly adjacent to the input pin of the module, to minimize input ripple voltage and ensure module stability. LTEST 1H Input Filtering 250 200 150 100 Tantalum 50 Ceramic 0 0 1 2 3 4 5 Output Voltage (Vdc) Figure 26. Input ripple voltage for various output with 4x22 F polymer and 4x47 F ceramic capacitors at the input (full load). 6 Data Sheet March 14, 2006 Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14 Vdc input; 1.2Vdc to 5.5Vdc 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 requirements of the end-use safety agency standards, i.e., UL 60950-1, CSA C22.2 No. 60950-1-03, and VDE 0850:2001-12 (EN60950-1) Licensed. TM The Austin Lynx 12 V SMT module is designed for low output ripple voltage and will meet the maximum output ripple specification with 1 F ceramic and 10 F tantalum capacitors 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 output ripple and noise of the module. Second, the dynamic response characteristics may need to be customized to a particular load step change. 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. To perform specific stability and transient response analysis, use Tyco Power's Stability Analysis Tool (SAT) available at power.tycoelectronics.com. Please contact your local Tyco Power application engineer for availability of characteristic model of these Austin Lynx modules. Tyco Electronics Power Systems For the converter output to be considered meeting the 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. The input to these units is to be provided with a fastacting fuse with a maximum rating of 20A in the positive input lead. 11 Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current Data Sheet March 14, 2006 Feature Description the thermal shutdown is not intended as a guarantee that the unit will survive temperatures beyond its rating. The module will automatically restart after it cools down. Remote On/Off TM The Austin Lynx 12V SMT power modules feature an On/Off pin for remote On/Off operation. If not using the remote On/Off pin, leave the pin open (module will be On). The On/Off pin signal (Von/Off) is referenced to ground. To switch the module on and off using remote On/Off, connect an open collector npn transistor between the On/Off pin and the ground pin (See Figure 27). During a logic-high (On/Off pin is pulled high internal to the module) when the transistor is in the Off state, the power module is ON. The maximum allowable leakage current of the transistor when Von/off = VIN,max is 10A. During a logic-low when the transistor is turned-on, the power module is OFF. During this state VOn/Off is less than 0.3V and the maximum IOn/Off = 1mA. MODULE VIN+ To trim up output voltage set point using an external resistor, connect Rtrim-up between the TRIM and GND pins (Figure 28). The value of Rtrim-up resistor is defined as: 10500 Rtrim - up = - 1000 Vo - Vo, set Rtrim-up is the external resistor in Vo is the desired trim-up voltage ON/OFF I ON/OFF The output voltage adjustment feature allows the output voltage set point to be increased or decreased by connecting an external resistor between the TRIM pin and Vo pin (decrease output voltage) or GND pin (increase output voltage). Vo,set is the nominal output voltage R2 + VON/OFF Output Voltage Programming Q2 R1 PWM Enable R3 Q1 Q3 For example, to trim up the output voltage of the 1.5V module (AXA010A0M93-SR) by 8% to 1.62V, Rtrim-up is calculated as follows: Vo,set = 1.5V Vo = 1.62V: CSS 10500 Rtrim - up = - 1000 1.62 - 1.5 R4 GND Rtrim - up = 86.5k _ Figure 27. Remote On/Off Implementation. V IN(+) V O(+) Vout Overcurrent Protection To provide protection in a fault (output overload) condition, the unit is equipped with internal current-limiting circuitry and can endure current limiting continuously. At the point of current-limit inception, the unit enters hiccup mode. The unit operates normally once the output current is brought back into its specified range. The typical average output current during hiccup is 3 A. ON/OFF LOAD TRIM R trim GND Input Undervoltage Lockout At input voltages below the input undervoltage lockout limit, module operation is disabled. The module will begin to operate at an input voltage above the undervoltage lockout turn-on threshold. Overtemperature Protection To provide over temperature protection in a fault condition, the unit relies upon the thermal protection feature of the controller IC. The unit will shutdown if the o thermal reference point Tref, exceeds 125 C (typical), but Figure 28. Circuit configuration for programming output voltage using an external resistor. To trim down output voltage set point using an external resistor, connect Rtrim-down between TRIM and Vo pins (Figure 29). The value of Rtrim-down resistor is defined as: (Vo - 0.7)15000 Rtrim - down = - 1000 Vo , set Vo - Data Sheet March 14, 2006 Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14 Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current The amount of power delivered by the module is defined as the output voltage multiplied by the output current (Vo x Io). When using Remote Sense and/or TRIM, the output voltage of the module can increase, which if the same output is maintained, increases the power output by the module. Make sure that the maximum output power of the module remains at or below the maximum rated power. When the Remote Sense feature is not being used, leave the Remote Sense pin unconnected. Feature Descriptions (continued) V IN(+) V O(+) Rtrim-down ON/OFF TRIM LOAD Rdistribution Rcontact Rcontact Rdistribution VIN(+) GND VO Sense RLOAD Figure 29. Circuit configuration to trim-down output voltage using an external resistor Rtrim-down is the external resistor in Vo,set is the nominal output voltage Vo, is the desired trim-down voltage Rdistribution Rcontact Rcontact Rdistribution COM COM Figure 30. Remote sense circuit configuration For example, to trim down the output voltage of the 2.5V module (AXA010A0G93-SR) by 8% to 2.3V, Rtrim-down is calculated as follows: Vo,set = 2.5V Vo = 2.3V (2.3 - 0.7)15000 Rtrim - down = - 1000 2.5 - 2.3 Rtrim - down = 119 k The amount of power delivered by the module is defined as the voltage at the output terminals multiplied by the output current. When using the trim feature, the output voltage of the module can be increased, which at the same output current would increase the power output of the module. Care should be taken to ensure that the maximum output power of the module remains at or below the maximum rated power (Pmax = Vo,set x Io,max). Remote Sense The Austin LynxTM 12V SMT power modules have a Remote Sense feature to minimize the effects of distribution losses by regulating the voltage at the Remote Sense and GND pins (See Figure 30). The voltage between the Sense pin and Vo pin must not exceed 0.5V. Although both the Remote Sense and the TRIM features can increase the output voltage Vo, the maximum increase is not the sum of both. The maximum Vo increase is the larger of either the Remote Sense or TRIM. Tyco Electronics Power Systems 13 Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current Data Sheet March 14, 2006 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 short axis of the module as shown in figure 31. The derating data applies to airflow in either direction of the module's short axis. Top View 25.4_ (1.0) Wind Tunnel PWBs Power Module 76.2_ (3.0) Tref x 8.3_ (0.325) Probe Loc ation for measuring airflow and ambient temperature Air flow Air Flow Figure 31. Tref Temperature measurement location. The thermal reference point, Tref used in the specifications is shown in Figure 31. For reliable o operation this temperature 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). Figure 32. Thermal Test Set-up. 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 temperatures (TA) for airflow conditions ranging from natural convection and up to 2m/s (400 ft./min) are shown in the Characteristics Curves section. Layout Considerations Copper paths must not be routed beneath the power module. For additional layout guide-lines, refer to the FLTR100V10 application note. Data Sheet March 14, 2006 Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14 Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current Mechanical Outline Dimensions are in inches and (millimeters). Tolerances: x.xx in. 0.02 in. (x.x mm 0.5 mm) [unless otherwise indicated] x.xxx in 0.010 in. (x.xx mm 0.25 mm) Co-planarity (max): 0.006 (0.15) Tyco Electronics Power Systems 15 Data Sheet March 14, 2006 Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current Recommended Pad Layout Dimensions are in inches and (millimeters). Tolerances: x.xx in. 0.02 in. (x.x mm 0.5 mm) [unless otherwise indicated] x.xxx in 0.010 in. (x.xx mm 0.25 mm) Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14 Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current Data Sheet March 14, 2006 Packaging Details TM The Austin Lynx 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: Tape Width: 177.8 mm (7.00") 44.00 mm (1.732") Tyco Electronics Power Systems 17 Data Sheet March 14, 2006 Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current Surface Mount Information Pick and Place TM The Austin Lynx 12 V SMT modules use an open frame construction and are designed for a fully automated assembly process. The modules are fitted with a label designed to provide a large surface area for pick and place operations. The label meets all the requirements for surface mount processing, as well as safety standards, and is able to withstand reflow o temperatures of up to 300 C. The label also carries product information such as product code, serial number and the location of manufacture. damage to the modules, and can adversely affect long-term reliability. In a conventional Tin/Lead (Sn/Pb) solder process peak reflow temperatures are limited to less than o o 235 C. Typically, the eutectic solder melts at 183 C, wets the land, and subsequently wicks the device connection. Sufficient time must be allowed to fuse the plating on the connection to ensure a reliable solder joint. There are several types of SMT reflow technologies currently used in the industry. These surface mount power modules can be reliably soldered using natural forced convection, IR (radiant infrared), or a combination of convection/IR. For reliable soldering the solder reflow profile should be established by accurately measuring the modules CP connector temperatures. 300 P eak Temp 235oC Figure 33. Pick and Place Location. REFLOW TEMP (C) 250 Tin Lead Soldering TM The Austin Lynx 12 V SMT power modules are lead free modules and can be soldered either in a lead-free solder process or in a conventional Tin/Lead (Sn/Pb) process. It is recommended that the customer review data sheets in order to customize the solder reflow profile for each application board assembly. The following instructions must be observed when soldering these units. Failure to observe these instructions may result in the failure of or cause 150 So ak zo ne 30-240s 100 Tlim above 205oC P reheat zo ne max 4oCs -1 0 REFLOW TIME (S) Figure 34. Reflow Profile for Tin/Lead (Sn/Pb) process. 240 235 MAX TEMP SOLDER (C) 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. 200 50 Nozzle Recommendations Co o ling zo ne 1-4oCs -1 Heat zo ne max 4oCs -1 230 225 220 215 210 205 200 0 10 20 30 40 50 Figure 35. Time Limit Curve Above 205oC for Tin/Lead (Sn/Pb) process. 60 Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14 Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current Surface Mount Information (continued) Lead Free Soldering The -Z version Austin Lynx 12V SMT modules are lead-free (Pb-free) and RoHS compliant and are both forward and backward compatible in a Pb-free and a SnPb soldering process. Failure to observe the instructions below may result in the failure of or cause damage to the modules and can adversely affect long-term reliability. Pb-free Reflow Profile Power Systems will comply with J-STD-020 Rev. C (Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices) for both Pb-free solder profiles and MSL classification procedures. This standard provides a recommended forced-air-convection reflow profile based on the volume and thickness of the package (table 4-2). The suggested Pb-free solder paste is Sn/Ag/Cu (SAC). The recommended linear reflow profile using Sn/Ag/Cu solder is shown in Fig. 36. MSL Rating The Austin Lynx 12V SMT modules have a MSL rating of 2. 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 30C 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 Tyco Electronics Board Mounted Power Modules: Soldering and Cleaning Application Note (AN04-001). 300 Per J-STD-020 Rev. C Peak Temp 260C 250 Reflow Temp (C) Data Sheet March 14, 2006 200 150 * Min. Time Above 235C 15 Seconds Heating Zone 1C/Second Cooling Zone *Time Above 217C 60 Seconds 100 50 0 Reflow Time (Seconds) Figure 36. Recommended linear reflow profile using Sn/Ag/Cu solder. Austin LynxTM 12 V SMT Non-isolated Power Modules: 10 - 14 Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current Data Sheet November 28, 2005 Ordering Information Please contact your Tyco Electronics' Sales Representative for pricing, availability and optional features. Table 3. Device Codes Output Voltage AXA010A0P93-SR Input Voltage R 10 - 14Vdc 1.2 V 10 A 87.5% SMT Tape & Reel 108970112 AXA010A0M93-SR 10 - 14Vdc 1.5 V 10 A 89.0% SMT Tape & Reel 108970096 Device Code Output Current Efficiency Connector Type Packaging Comcodes AXA010A0Y93-SR 10 - 14Vdc 1.8 V 10 A 90.0% SMT Tape & Reel 108969726 AXA010A0G93-SR 10 - 14Vdc 2.5 V 10 A 92.0% SMT Tape & Reel 108970070 AXA010A0F93-SR 10- 14Vdc 3.3 V 10 A 93.0% SMT Tape & Reel 108970054 AXA010A0A93-SR 10 - 14Vdc 5.0 V 10 A 95.0% SMT Tape & Reel 108970013 AXA010A0P93-SRZ 10 - 14Vdc 1.2 V 10 A 87.5% SMT Tape & Reel CC109102885 AXA010A0M93-SRZ 10 - 14Vdc 1.5 V 10 A 89.0% SMT Tape & Reel CC109102877 AXA010A0Y93-SRZ 10 - 14Vdc 1.8 V 10 A 90.0% SMT Tape & Reel CC109102902 AXA010A0G93-SRZ 10 - 14Vdc 2.5 V 10 A 92.0% SMT Tape & Reel CC109102860 AXA010A0F93-SRZ 10- 14Vdc 3.3 V 10 A 93.0% SMT Tape & Reel CC109102852 AXA010A0A93-SRZ 10 - 14Vdc 5.0 V 10 A 95.0% SMT Tape & Reel CC109106787 -Z refers to RoHS-compliant codes Europe, Middle-East and Africa Headquarters Tyco Electronics (UK) Ltd Tel: +44 (0) 1344 469 300 Latin America, Brazil, Caribbean Headquarters Tyco Electronics Power Systems World Wide Headquarters Tyco Electronics Power Systems, Inc. 3000 Skyline Drive, Mesquite, TX 75149, USA +1-800-843-1797 (Outside U.S.A.: +1-972-284-2626) www.power.tycoelectronics.com e-mail: techsupport1@tycoelectronics.com Tel: +56 2 209 8211 India Headquarters Tyco Electronics Systems India Pte. Ltd. Tel: +91 80 841 1633 x3001 Asia-Pacific Headquarters Tyco Electronics Singapore Pte. Ltd. Tel: +65 6416 4283 Tyco Electronics Corporation reserves the right to make changes to the product(s) or information contained herein without notice. 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. (c) 2003 Tyco Electronics Power Systems, Inc., (Mesquite, Texas) All International Rights Reserved. Document No: DS03-079 ver. 1.2 PDF name: austin lynx smt 12v.pdf