Data Sheet March 28, 2008 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Features RoHS Compliant Applications n Compatible with RoHS EU Directive 200295/EC n Compatible in Pb- free or SnPb reflow environment n Delivers up to 10A output current n High efficiency: 95% at 3.3V full load n Small size and low profile: 33 mm x 13.5 mm x 8.30 mm (1.3 in x 0.53 in x 0.33 in) n Light Weight 0.23 oz(6.5 g) n Cost-efficient open frame design n High reliability: MTBF > 10M hours at 25 °C n Constant switching frequency (300 KHz typical) n Output overcurrent protection with auto-restart n Overtemperature protection n Surface Mount Package,Tape and Reel n Workstations,Servers and Desktop computers n Adjustable output voltage (-5% to +10% for 0.9V output) n Distributed Power Architectures n Remote On/Off n Telecommunications Equipment n Wide Operating temperature range:-40 °C to +85 °C n LANs/WANs n n Data processing Equipment n Latest generation IC’s (DSP, FPGA, ASIC) and Microprocessor-powered applications. UL* 60950 Recognized, CSA† C22.2 No. 60950-00 Certified, and VDE‡ 0805 (IEC60950, 3rd edition) Licensed Options n Remote Sense Description Austin Lynx™ power modules are non-isolated dc-dc converters that can deliver 10 A of output current with full load efficiency of 95% at 3.3 V output. These open frame modules in surface-mount-package enable designers to develop cost-and space efficient solutions. Standard features include remote ON/OFF, 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. This product is intended for integration into end-use equipment. All the required procedures for CE marking of end-use equipment should be followed. (The CE mark is placed on selected products.) ISO is a registered trademark of the Internation Organization of Standards Document Name: FDS02-034EPS ver.1.6 PDF Name: Austin Lynx SMT Data Sheet March 28, 2008 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A 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 reliabiltiy. Device Symbol Min Max Unit Input Voltage:Continuous Parameter All VIN 0 6.5 Vdc Operating Ambient Temperature (See Thermal Considerations section) All TA –40 85 °C 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 Operating Input Voltage Device Symbol Min AXH010A0S0R9-SR AXH010A0S1R0-SR AXH010A0P-SR AXH010A0M-SR AXH010A0Y-SR AXH010A0D-SR AXH010A0G-SR AXH010A0F-SR VIN VIN VIN VIN VIN VIN VIN VIN 3.0 3.0 3.0 3.0 3.0 3.0 3.0 4.5 Maximum Input Current (VI = 0 V to 75 V; IO = IO, max) Typ II, max Input Reflected Ripple Current, peak-peak (5 Hz to 20 MHz, 1µH source impedance TA = 25 °C;CIN =200µF) All Input Ripple Rejection (120 Hz) All II Max Unit 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc 9.5 Adc 30 mAp-p 40 dB CAUTION: This power module is not internally fused. An input line fuse must always be used. 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 time-delay fuse with a maximum rating of 20A. Lineage Power 2 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Data Sheet March 28, 2008 Electrical Specifications (continued) Device Symbol Min Typ Max Unit Output Voltage Set Point (VI =5 Vdc; IO = IO, max, TA = 25 °C) Parameter AXH010A0S0R9-SR AXH010A0S1R0-SR AXH010A0P-SR AXH010A0M-SR AXH010A0Y-SR AXH010A0D-SR AXH010A0G-SR AXH010A0F-SR VO,set VO,set VO,set VO,set VO,set VO,set VO,set VO,set 0.886 0.985 1.182 1.47 1.764 1.97 2.45 3.234 0.9 1.0 1.2 1.5 1.8 2.0 2.5 3.3 0.914 1.015 1.218 1.53 1.836 2.03 2.55 3.366 Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Output Voltage (Over all operating input voltage, resistive load, and temperature conditions at steady state until end of life.) AXH010A0S0R9-SR AXH010A0S1R0-SR AXH010A0P-SR AXH010A0M-SR AXH010A0Y-SR AXH010A0D-SR AXH010A0G-SR AXH010A0F-SR VO VO VO VO VO VO VO VO 0.873 0.970 1.164 1.455 1.746 1.94 2.425 3.2 — — — — — — — — 0.927 1.03 1.236 1.545 1.854 2.06 2.575 3.4 Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Output Regulation: Line (VI = VI, min to VI, max) Load (IO = IO, min to IO, max) Temperature (TA = TA, min to TA, max) All All All — — — — — — 0.2 0.4 0.5 Output Ripple and Noise Measured across 10 µF Tantalum, 1µF Ceramic,, RMS (5 Hz to 20 MHz bandwidth) Peak-to-peak (5 Hz to 20 MHz bandwidth) All All — — 7 25 15 30 mVrms mVp-p Output Current All IO 0 — 10 Adc Output Current-limit Inception (VO = 90% of VO, set) All IO, lim 17 — Adc Output Short-circuit Current (Average) Efficiency (VI = VIN, nom; IO = IO, max), TA = 25 °C Switching Frequency %, VO, set %, VO, set %, VO, set All IO, s/c — 3 — Adc AXH010A0S0R9-SR AXH010A0S1R0-SR AXH010A0P-SR AXH010A0M-SR AXH010A0Y-SR AXH010A0D-SR AXH010A0G-SR AXH010A0F-SR η η η η η η η η — — — — — — — — 83 85 86 88 90 91 92 95 — — — — — — — — % % % % % % % % All fSW — 300 — kHz General Specifications Parameter Min Calculated MTBF (IO = 80% of IO, max TA = 25 °C) Lineage RIN (Reliability Infomation Notebook) Method Weight Lineage Power Typ Max 10,240,000 — 5.5(0.19) Unit Hours 6.5(0.23) g (oz.) 3 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Data Sheet March 28, 2008 Feature Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information. Parameter Max Unit Von/off Ion/off 6.5 10 V µA All All All Von/off Ion/off — 0.3 1 V mA ms AXH010A0S0R9-SR All others Vtrim Vtrim -5 -10 +10 +10 %VO, set %VO, set Overtemperature Protection (shutdown) All TQ1/TQ2 — 110 — °C Input Undervoltage Lockout Turn-on Threshold Turn-off Threshold All All 2.63 2.47 2.8 2.7 2.95 2.9 V V Remote On/Off Signal Interface (VI = VI,min to VI, max; open collector npn or Compatible, Von/off signal referenced to GND. See Figure 20 and Feature Descriptions section) Logic High (ON/OFF pin open—Module On) Ion/off = 0.0 µA Von/off = VI -0.4 Logic Low (VON/OFF < 0.3 V)—Module Off Ion/off = 0.5 mA Von/off = 0.3 V Turn-on time (IO = 80% of IO, max; VO within ±1% of steady state; see Figure 12) Output voltage set-point adjustment range (TRIM) Lineage Power Device Symbol All Min Typ 5 4 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Data Sheet March 28, 2008 Characteristic Curves The following figures provide typical characteristics curves at room temperature (TA = 25 °C). 92 II, max = 9.5 A 90 10 EFFICIENCY, η (%) INPUT CURRENT, II (A) 12 8 6 4 2 88 86 84 82 VI = 3.0 V VI = 3.3 V VI = 5.0 V VI = 5.5 V 80 78 76 0 2 2.5 3 3.5 4 4.5 INPUT VOLTAGE, VI (V) 5 74 1 5.5 Figure 4. Figure 1. Typical Input Characteristic at 10A Output Current. 2 3 4 5 6 7 OUTPUT CURRENT, IO (A) 8 9 10 Converter Efficiency vs output current AXH010A0S1R0-SR(1.0V Output Voltage). 90 100% VI VI VI VI 75% = = = = EFFICIENCY, η (%) NORMALIZED OUTPUT VOLTAGE, VO 92 5.5 V 5.0 V 3.3 V 3.0 V 50% 25% 86 84 0 3 6 9 12 OUTPUT CURRENT, IO (A) 82 78 1 18 15 Figure 5. 94 88 92 EFFICIENCY, η (%) 90 86 84 82 VI = 3.0 V VI = 3.3 V VI = 5.0 V VI = 5.5 V 80 82 4 5 6 7 8 9 Converter Efficiency vs output current AXH010A0S0R9-SR(0.9V Output Voltage). Lineage Power 6 7 8 9 10 VI = 3.0 V VI = 3.3 V VI = 5.0 V VI = 5.5 V 1 10 2 3 4 5 6 7 8 9 10 OUTPUT CURRENT, IO (A) OUTPUT CURRENT, IO (A) Figure 3. 5 Converter Efficiency vs output current AXH010A0P-SR(1.2V Output Voltage). 86 76 3 4 88 84 2 3 90 78 1 2 OUTPUT CURRENT, IO (A) Figure 2. Output Voltage and current characteristics. 74 VI = 3.0 V VI = 3.3 V VI = 5.0 V VI = 5.5 V 80 0% EFFICIENCY, η (%) 88 Figure 6. Converter Efficiency vs output current AXH010A0M-SR(1.5V Output Voltage). 5 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Data Sheet March 28, 2008 Characteristic Curves The following figures provide typical characteristics curves at room temperature (TA = 25 °C) 97 96.5 92 EFFICIENCY, η (%) EFFICIENCY, η (%) 94 90 VI = 3.0 V VI = 3.3 V VI = 5.0 V VI = 5.5 V 88 86 84 1 2 3 4 5 6 7 8 9 96 95.5 95 94 93.5 1 10 VI = 4.5 V VI = 5.0 V VI = 5.5 V 94.5 2 OUTPUT CURRENT, IO (A) AXH010A0SY-SR(1.8V Output Voltage). OUTPUT VOLTAGE, VO (V) (20 mV/div) 94 9 10 92 90 VI = 3.0 V VI = 3.3 V VI = 5.0 V VI = 5.5 V 88 2 3 4 5 6 7 8 OUTPUT CURRENT, IO (A) 9 10 Figure 8. Converter Efficiency vs output current VI = 3.3 V VI = 5.0 V VI = 5.5 V TIME, t (2 µs/div) Figure 11. Typical Output Ripple Voltage at 10A Output Current. AXH010A0D-SR(2.0V Output Voltage). VIN SOURCE 98 96 94 92 VI = 3.0 V VI = 3.3 V VI = 5.0 V VI = 5.5 V 90 88 1 2 3 4 5 6 7 OUTPUT CURRENT, IO (A) 8 9 10 OUTPUT VOLTAGE, VO (V) EFFICIENCY, η (%) 8 VI = 3.0 V 96 EFFICIENCY, η (%) 4 5 6 7 OUTPUT CURRENT, IO (A) Figure 10. Converter Efficiency vs output current AXH010A0F-SR(3.3V Output Voltage). Figure 7. Converter Efficiency vs output current 86 1 3 TIME, t (2 ms/div) Figure 9. Converter Efficiency vs output current AXH010A0G-SR(2.5V Output Voltage). Lineage Power Figure 12. Typical Start-up Transient. 6 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Data Sheet March 28, 2008 Characteristic Curves OUTPUT CURRENT IO ( 2.5 A/div) OUTPUT VOLTAGE VO (100 mV/div) The following figures provide typical characteristics curves at room temperature (TA = 25 °C) TIME, t (5 µs/div) Figure 13. Typical Transient Response to Step Load OUTPUT CURRENT IO ( 2.5 A/div) OUTPUT VOLTAGE VO (100 mV/div) Change at 2.5 A/µs from 100% to 50% of IO,max at 3.3 V Input (COUT = 1 µF ceramic, 10 µF Tantalum). TIME, t (5 µs/div) Figure 14. Typical Transient Response to Step Load Change at 2.5 A/µs from 50% to 100% of IO,max at 3.3 V Input (COUT = 1 µF ceramic, 10 µF Tantalum). Lineage Power 7 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Data Sheet March 28, 2008 Test Configurations Design Considerations Input Source Impedance L VI (+) 1 µH CS 220 μF ESR < 0.1 Ω @ 20 °C, 100 kHz BATTERY 2 x 100µF Tantalum VI (–) Note: Measure input reflected ripple current with a simulated source inductance (LTEST) of 1µH. Capacitor CS offsets possible battery impedance. Measure current as shown above. Figure 15. Input Reflected Ripple Current Test Setup. To maintain low-noise and ripple at the input voltage, it is critical to use low ESR capacitors at the input to the module. 18 shows the input ripple voltage (mVp-p) for various output models using a 150 µF low ESR polymer capacitor (Panasonic p/n: EEFUE0J151R, Sanyo p/n: 6TPE150M) in parallel with 47 µF ceramic capacitor (Panasonic p/n: ECJ5YB0J476M, Taiyo Yuden p/n: CEJMK432BJ476MMT). 19 depicts much lower input voltage ripple when input capacitance is increased to 450 µF (3 x 150 µF) polymer capacitors in parallel with 94 µF (2 x 47 µF) ceramic capacitor. The input capacitance should be able to handle an AC ripple current of at least: V out V out A rms I rms = I out ----------- 1 – ----------V in V in COPPER STRIP 1µF 10 µF CERAMIC TANTALUM SCOPE RESISTIVE LOAD GND Note: Scope measurements should be made using a BNC socket, with a 10 µF tantalum capacitor and a 1 µF ceramic capcitor. Position the load between 51 mm and 76 mm (2 in and 3 in) from the module Figure 16. Peak-to-Peak Output Ripple Measurement Test Setup. INPUT VOLTAGE NOISE (mV p-p) 200 VO 150 100 VI = 5 V VI = 3.3 V 50 0 0.5 1 1.5 2 2.5 OUTPUT VOLTAGE, VO (Vdc) 3 Figure 18. Input Voltage Ripple for Various Output Models, IO = 10 A (CIN = 150 µF polymer // 47 µF ceramic). CONTACT AND DISTRIBUTION LOSSES VO 100 IO SUPPLY LOAD GND CONTACT RESISTANCE 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 17. Output Voltage and Efficiency Test Setup. [ V O(+) – V O(-) ] × I O η = ⎛ ------------------------------------------------⎞ × 100 ⎝ [ V I(+) – V I(-) ] × I I ⎠ Lineage Power INPUT VOLTAGE NOISE (mV p-p) VI II 75 50 25 0 0.5 VI = 5 V VI = 3.3 V 1 1.5 2 2.5 OUTPUT VOLTAGE, VO (Vdc) 3 Figure 19. Input Voltage Ripple for Various Output Models, IO = 10 A (CIN = 3x150 µF polymer // 2x47 µF ceramic). 8 Data Sheet March 28, 2008 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Design Considerations (continued) Input Source Impedance (continued) The power module should be connected to a low ac-impedance input source. Highly inductive source impedances can affect the stability of the module. An input capacitance must be placed close to the input pins of the module, to filter ripple current and ensure module stability in the presence of inductive traces that supply the input voltage to the module. Safety Considerations For safety-agency approval of the system in which the power module is used, the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standard, i.e., UL60950, CSA C22.2 No. 60950-00, and VDE 0805:2001-12 (IEC60950, 3rd Ed). 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 maximum 20 A time-delay fuse in the ungrounded lead. Lineage Power 9 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Data Sheet March 28, 2008 Feature Descriptions Table 1. Austin Lynx™ Trim Values Remote On/Off The Austin Lynx™ 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 GND pin (see Figure 20). 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 leakage current of the transistor when Von/off = (VI –0.4) is 10 µA. The module is Off when the On/Off pin is pulled low (Logic-low) with the transistor in the active state. During this state VOn/Off is less than 0.3V and the maximum IOn/Off = 1 mA. VO, set Rbuffer 3.3 V 2.5 V 2.0 V 1.8 V 1.5 V 1.2 V 1.0 V 0.9 V 59 kΩ 78.7 kΩ 100 kΩ 100 kΩ 100 kΩ 59 kΩ 30.1 kΩ 5.11 kΩ Note: VO, set is the typical output voltage for the unit. For example, to trim-up the output voltage of 1.5V module (AXH010A0M-SR) by 8% to 1.62V, Rtrim-up is calculated as follows: ΔV out = 0.12V R buffer = 100kΩ VI Vo Ion/off 24080 R trim – up = --------------- – 100k 0.12 ON/OFF R trim – up = 100.66kΩ + Von/off AXH010A0M-SR AXH010A0M9-SR GND VO RLOAD Figure 20. Remote On/Off Implementation. TRIM Rtrim-up Output Voltage Set-Point Adjustment (Trim) GND Output voltage set-point adjustment allows the output voltage set point to be increased or decreased by connecting either an external resistor or a voltage source between the TRIM pin and either the VO pin (decrease output voltage) or GND pin (increase output voltage). Figure 21. Circuit Configuration to trim-up output voltage. For TRIM-UP using an external resistor, connect Rtrim-up between the TRIM and GND pins (21). The value of Rtrimup defined as: 24080 R trim – up = ------------------ – R buffer kΩ ΔV out For trim-down using an external resistor, connect Rtrimdown between the TRIM and VOUT pins of the module (22). The value of Rtrim-down is defined as: |ΔVout| is the desired output voltage set-point adjustment Rbuffer (internal to the module) is defined in Table 1 for various models V out – 0.8 R trim-down = ⎛ ------------------------- – 1⎞ x30100 – R buffer ⎝ ΔV out ⎠ kΩ Vout is the typical set point voltage of a module |DVout| is the desired output voltage adjustment Rbuffer (internal to the module) is defined in Table 1 for various models For example, to trim-down the output voltage of 2.5 V module (AXH010G-SR) by 8% to 2.3V, Rtrim-down is calculated as follows: Lineage Power 10 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Data Sheet March 28, 2008 mation at the end of this document for more information. Feature Descriptions (continued) Output Voltage Set-Point Adjustment (Trim) (continued) V out = 2.5V Remote Sense minimizes the effects of distribution losses by regulating the voltage at the load via the SENSE and GND connections (See 23). The voltage between the SENSE pin and VO pin must not exceed 0.5V. Although both the Remote-Sense and Trim features can each 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 the Trim. The amount of power delivered by the module is defined as the output voltage multiplied by the output current (VO x IO). When using SENSE and/or TRIM, the output voltage of the module can increase which, if the same output current 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 pin 3 is present but the Remote Sense feature is not being used, leave Sense pin disconnected. R buffer = 78.7k 2.5 – 0.8 R trim – down = ⎛ --------------------- – 1⎞ x30100 – 78700 ⎝ 0.2 ⎠ R trim – down = 147.05kΩ VO VI VO SENSE Rtrim-down TRIM GND LOAD RLOAD DISTRIBUTION LOSSES GND Figure 22. Circuit Configuration to trim-down output voltage. For Trim-up using an external voltage source, apply a voltage from TRIM pin to ground using the following equation: R buffer V trim-up = 0.8 – ΔV out x -----------------30100 For Trim-down using an external voltage source, apply a voltage from TRIM pin to ground using the following equation: R buffer V trim-down = 0.8 + ΔV out x -----------------30100 Vtrim-up is the external source voltage for trim-up Vtrim-down is the external source voltage for trim-down |ΔVout| is the desired output voltage set-point adjustment Rbuffer (internal to the module) is defined in Table 1 for various models DISTRIBUTION LOSSES Figure 23. Effective Circuit Configuration for Remote Sense Operation. Overtemperature Protection To provide additional protection in a fault condition, the unit is equipped with a nonlatched thermal shutdown circuit. The shutdown circuit engages when Q1 or Q2 (shown in Figure 24) exceeds approximately 110 °C. The unit attempts to restart when Q1 or Q2 cool down and cycles on and off while the fault condition exists. Recovery from shutdown is accomplished when the cause of the overtemperature condition is removed. Overcurrent Protection To provide protection in a fault condition, the unit is equipped with internal overcurrent protection. The unit operates normally once the fault condition is removed. The power module will supply up to 170% of rated current for less than 1.25 seconds before it enters thermal shutdown. If the TRIM feature is not being used, leave the TRIM pin disconnected. Remote Sense Austin Lynx™ SMT power modules offer an option for a Remote-Sense function. When the Device Code description includes a suffix “3”, pin 3 is added to the module and the Remote-Sense is an active feature. See the Ordering InforLineage Power 11 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Data Sheet March 28, 2008 Thermal Considerations The power module operates in a variety of thermal environments; however, sufficient cooling should be provided to help ensure reliable operation of the unit. Heat is removed by conduction, convection, and radiation to the surrounding environment. 25.4 (1.0) Wind Tunnel PWBs Power Module The thermal data presented is based on measurements taken in a wind tunnel. The test setup shown in Figure 25 was used to collect data for Figures 26 and 27. Note that the airflow is parallel to the short axis of the module as shown in Figure 24. The derating data applies to airflow along either direction of the module’s short axis. 76.2 (3.0) x Pin 6 8.3 (0.33) Q2 Q1 Probe Location for measuring airflow and ambient temperature Air flow Figure 25. Thermal Test Setup. AIRFLOW 12 Figure 24. Temperature Measurement Location. The temperature at either location should not exceed 110 °C. The output power of the module should not exceed the rated power for the module (VO, set x IO, max). Output Current IO (A) 10 8 2.0 m/s (400 ft./min.) 1.0 m/s (200 ft./min.) 0.5 m/s (100 ft./min.) NATURAL CONVECTION 6 4 2 Convection Requirements for Cooling 0 To predict the approximate cooling needed for the module, refer to the Power Derating curves in Figures 26 and 27. Proper cooling can be verified by measuring the power module’s temperature at Q1-pin 6 and Q2-pin 6 as shown in Figure 24. 30 40 50 60 70 Ambient Temperature TA (˚C) 80 90 Figure 26. Typical Power Derating Vs Output Current for 3.3 VIN. 8 7 OUTPUT CURRENT, IO (A) These derating curves are approximations of the ambient temperatures and airflows required to keep the power module temperature below its maximum rating. Once the module is assembled in the actual system, the module’s temperature should be checked as shown in Figure 24 to ensure it does not exceed 110 °C. 20 6 2.0 m/s (400 ft./min.) 1.0 m/s (200 ft./min.) 0.5 m/s (100 ft./min.) NATURAL CONVECTION 5 4 3 2 1 0 20 30 40 50 60 70 AMBIENT TEMPERATURE, TA (˚C) 80 90 Figure 27. Typical Power Derating Vs Output Current for 5.0VIN. Lineage Power 12 Data Sheet March 28, 2008 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Layout Considerations Copper paths must not be routed beneath the power module. Surface Mount Information Pick and Place Area Although the module weight is minimized by using openframe construction, the modules have a relatively large mass compared to conventional surface-mount components. To optimize the pick-and-place process, automated vacuum equipment variables such as nozzle size, tip style, vacuum pressure, and placement speed should be considered. Austin Lynx™ SMT modules have a flat surface which serves as a pick-and-place location for automated vacuum equipment. The module’s pick-and-place location is identified by the target symbol on the top label as shown in Figure 28. 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 Peak Temp 235 oC 250 Cooling zone 1-4oCs -1 Heat zone max 4oCs -1 200 150 Soak zone 30-240s 100 50 Tlim above 205 o C Preheat zone max 4oCs -1 0 REFLOW TIME (S) Figure 29. Reflow Profile. 240 235 230 225 Figure 28. Pick and Place Location. 220 215 210 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 pick & placement speed should be considered to optimize this process. The minimum recommended nozzle diameter for reliable operation is 3mm. The maximum nozzle outer diameter, which will safely fit within the allowable component spacing, is 12 mm max. Tin Lead Soldering The Austin LynxTM 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 reflow temperatures are limited to less than 235oC. Typically, the eutectic solder melts at 183oC, wets the land, and subsequently wicks the device connection. Sufficient time must be Lineage Power 205 200 0 10 20 30 TIME (S) 40 50 60 Figure 30. Time Limit curve above 2050C. Lead Free Soldering The –Z version Austin Lynx SMT modules are lead-free (Pbfree) 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 Figure. 31. 13 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Data Sheet March 28, 2008 Surface Mount Information (continued) MSL Rating The Austin LynxTM SMT modules have a MSL rating of 1. Storage and Handling The recommended storage environment and handling procedures for moisture-sensitive surface mount packages is detailed in J-STD-033 Rev. A (Handling, Packing, Shipping and Use of Moisture/Reflow Sensitive Surface Mount Devices). Moisture barrier bags (MBB) with desiccant are required for MSL ratings of 2 or greater. These sealed packages should not be broken until time of use. Once the original package is broken, the floor life of the product at conditions of £ 30°C and 60% relative humidity varies according to the MSL rating (see J-STD-033A). The shelf life for dry packed SMT packages will be a minimum of 12 months from the bag seal date, when stored at the following conditions: < 40° C, < 90% relative humidity. Post Solder Cleaning and Drying Considerations Post solder cleaning is usually the final circuit-board assembly process prior to electrical board testing. The result of inadequate cleaning and drying can affect both the reliability of a power module and the testability of the finished circuit-board assembly. For guidance on appropriate soldering, cleaning and drying procedures, refer to Lineage Power Board Mounted Power Modules: Soldering and Cleaning Application Note (AP01-056EPS). 300 Per J-STD-020 Rev. C Peak Temp 260°C Reflow Tem p (°C ) 250 200 * Min. Time Above 235°C 15 Seconds Cooling Zone 150 Heating Zone 1°C/Second *Time Above 217°C 60 Seconds 100 50 0 Reflow Time (Seconds) Figure 31. Recommended linear reflow profile using Sn/ Ag/Cu solder. Solder Ball and Cleanliness Requirements The open frame (no case or potting) power module will meet the solder ball requirements per J-STD-001B. These requirements state that solder balls must neither be loose nor violate the power module minimum electrical spacing. The cleanliness designator of the open frame power module is C00 (per J specification). Lineage Power 14 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Data Sheet March 28, 2008 Surface-Mount Tape and Reel PICK POINT 0.945 (24.0) 0.995 (25.2) 0.158 (4.0) TOP COVER TAPE EMBOSSED CARRIER FEED DIRECTION 0.33 (8.38) 1.45 (36.8) 1.73 (44.0) 1.59 (40.4) TOP COVER TAPE EMBOSSED CARRIER NOTE: CONFORMS TO EAI-481 REV. A STANDARD Lineage Power 15 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Data Sheet March 28, 2008 Mechanical Outline Diagram Dimensions are in millimeters and (inches). Tolerances: x.x ± 0.5 mm (0.02 in.), x.xx ± 0.25 mm (0.010 in.), unless otherwise noted. BOTTOM VIEW OF BOARD SIDE VIEW 8.28 (0.326) 33.00 (1.300) 7.87 (0.310) 4.83 4.83 4.83 (0.190) (0.190) (0.190) GND VOUT TRIM 7.54 (0.297) See Note 1.58 (0.062) MAXIMUM SENSE 10.29 (0.405) 1.57 (0.062) 13.46 (0.530) VIN ON/OFF 2.84 (0.112) Lineage Power SURFACE MOUNT CONTACT 848667093 1.22 6 PLACES (0.048) LI INDUCTOR 1.91 (0.075) 16 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Data Sheet March 28, 2008 Recommended Pad Layout Dimensions are in millimeters and (inches). Tolerances: x.x ± 0.5 mm (0.02 in.), x.xx ± 0.25 mm (0.010 in.), unless otherwise noted. 7.54 (0.297) 4.83 (0.190) SENSE 4.83 (0.190) 4.83 (0.190) TRIM VOUT 7.87 (0.310) GND 10.29 (0.405) 10.92 (0.430) VIN ON/OFF 0.64 (0.025) 29.90 (1.177) PAD SIZE MIN: 3.556 X 2.413 (0.140 X 0.095) MAX: 4.19 X 2.79 (0.165 X 0.110) Lineage Power 17 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Data Sheet March 28, 2008 Ordering Information Please contact your Lineage Power Sales Representative for pricing, availability and optional features. Table 2. Device Codes without TRIM Input Voltage Output Voltage Output Current Efficiency Connector Type Device Code Comcodes 3.0 – 5.5 Vdc 3.0 – 5.5 Vdc 3.0 – 5.5 Vdc 3.0 – 5.5 Vdc 3.0 – 5.5 Vdc 3.0 – 5.5 Vdc 3.0 – 5.5 Vdc 4.5 – 5.5 Vdc 3.0 – 5.5 Vdc 3.0 – 5.5 Vdc 3.0 – 5.5 Vdc 4.5 – 5.5 Vdc 0.9 V 1.0 V 1.2 V 1.5 V 1.8 V 2.0 V 2.5 V 3.3 V 1.5 V 1.8 V 2.5 V 3.3 V 10 A 10 A 10 A 10 A 10 A 10 A 10 A 10 A 10 A 10 A 10 A 10 A 83 85 86 88 90 91 92 95 88 90 92 95 SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT AXH010A0R0S9-SR AXH010A0R1S0-SR AXH010A0P-SR AXH010A0M-SR AXH010A0Y-SR AXH010A0D-SR AXH010A0G-SR AXH010A0F-SR AXH010A0M-SRZ AXH010A0Y-SRZ AXH010A0G-SRZ AXH010A0F-SRZ 108967597 108967605 108967571 108967563 108967589 108967530 108967555 108967548 CC109104915 CC109104956 CC109104907 CC109106886 Table 3. Device Codes with TRIM Input Voltage Output Voltage Output Current Efficiency Connector Type Device Code Comcodes 3.0 – 5.5 Vdc 3.0 – 5.5 Vdc 3.0 – 5.5 Vdc 3.0 – 5.5 Vdc 3.0 – 5.5 Vdc 3.0 – 5.5 Vdc 3.0 – 5.5 Vdc 4.5 – 5.5 Vdc 3.0 – 5.5 Vdc 3.0 – 5.5 Vdc 3.0 – 5.5 Vdc 3.0 – 5.5 Vdc 4.5 – 5.5 Vdc 0.9 V 1.0 V 1.2 V 1.5 V 1.8 V 2.0 V 2.5 V 3.3 V 1.2 V 1.5 V 1.8 V 2.5 V 3.3 V 10 A 10 A 10 A 10 A 10 A 10 A 10 A 10 A 10 A 10 A 10 A 10 A 10 A 83 85 86 88 90 91 92 95 86 88 90 92 95 SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT SMT AXH010A0R0S99-SR AXH010A0R1S09-SR AXH010A0P9-SR AXH010A0M9-SR AXH010A0Y9-SR AXH010A0D9-SR AXH010A0G9-SR AXH010A0F9-SR AXH010A0P9-SRZ AXH010A0M9-SRZ AXH010A0Y9-SRZ AXH010A0G9-SRZ AXH010A0F9-SRZ 108966177 108966110 108966144 108966136 108966169 108966102 108966128 108966094 CC109105896 CC109101417 CC109101425 CC109102935 CC109106878 Lineage Power 18 Austin LynxTM SMT Non-Isolated dc-dc Power Modules: 3.0 Vdc - 5.5 Vdc Input, 0.9 Vdc - 3.3 Vdc Output, 10 A Data Sheet March 28, 2008 Ordering Information (continued) Optional remote sense feature can be ordered using suffix 3 shown in Table 4. For example, a AXH010A0Y-SR with remote sense is AXH010A0Y3-SR Table 4. Device Options Option Remote Sense RoHS Compliant Suffix 3 -Z A sia-Pacific Head qu art ers T el: +65 6 41 6 4283 World W ide Headq u arters Lin eag e Po wer Co rp oratio n 30 00 Sk yline D rive, Mesquite, T X 75149, U SA +1-800-526-7819 (Outs id e U .S.A .: +1- 97 2-2 84 -2626) www.line ag ep ower.co m e-m ail: tech sup port1@ lin ea gep ower.co m Eu ro pe, M id dle-East an d Afric a He ad qu arters T el: +49 8 9 6089 286 Ind ia Head qu arters T el: +91 8 0 28411633 Lineage Power reserves the right to make changes to the produc t(s) or information contained herein without notice. No liability is ass umed as a res ult of their use or applic ation. No rights under any patent acc ompany the sale of any s uc h pr oduct(s ) or information. © 2008 Lineage Power Corpor ation, (Mesquite, Texas ) All International Rights Res er ved. Document Name: FDS02-034EPS ver.1.6 PDF Name: Austin Lynx SMT