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ATA010A0X43-SRZ Datasheet(PDF) 10 Page - Lineage Power Corporation |
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ATA010A0X43-SRZ Datasheet(HTML) 10 Page - Lineage Power Corporation |
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10 / 21 page  Data Sheet May 19, 2009 Austin LynxTM II 12 V SMT Non-Isolated Power Modules: 8.3 – 14.0Vdc Input; 0.75Vdc to 5.5Vdc Output; 10A output current LINEAGE POWER 10 Test Configurations TO OSCILLOSCOPE CURRENT PROBE LTEST 1μH CS 1000μF Electrolytic E.S.R.<0.1 Ω @ 20°C 100kHz 2x100μF Tantalum VIN(+) COM 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. CIN Figure 23. Input Reflected Ripple Current Test Setup. 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. VO(+) COM 1uF . RESISTIVE LOAD SCOPE COPPER STRIP GROUND PLANE 10uF Figure 24. Output Ripple and Noise Test Setup. VO COM VIN(+) COM RLOAD Rcontact Rdistribution Rcontact Rdistribution Rcontact Rcontact Rdistribution Rdistribution VIN VO 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. η = VO. IO VIN. IIN x 100 % Efficiency Design Considerations Input Filtering Austin Lynx TM II 12V SMT module should be connected to a low-impedance AC 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. In a typical application, 4x47 µF low-ESR tantalum capacitors (AVX part #: TPSE476M025R0100, 47µF 25V 100 mΩ 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 (mVp- p) for various outputs with 4x47 µF tantalum capacitors and with 4x22 µF ceramic capacitor (TDK part #: C4532X5R1C226M) at full load. 0 50 100 150 200 250 300 01 23 4 5 6 Tantalum Ceramic Output Voltage (Vdc) Figure 26. Input ripple voltage for various output with 4x22 µF polymer and 4x47 µF ceramic capacitors at the input (full load). |
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