Step-Down Converter Delivers 25A at 12VOUT from Inputs Up to 60V

本文介绍了同步降压器LTC3890的工作原理，电路性能和外围元件选择依据。Step-DownConverterDelivers25Aat12VOUTfromInputsUpto60VDesignNote1024VictorKhasievIntroductionHighEfficiency2-PhaseConverterProduces12VTheLTC3890(dualoutputs)andLTC3891(singleat25Aoutput)step-downDC/DCcontrollersdirectlyacceptFigure1showstheLTC3890ina2-phasesingleoutputinputsfrom4Vto60V.Thiswideinputrangecoversstep-downconverterconfigurationthatdelivers25Ainputvoltagesforsingleordoublebatteryautomotiveat12V,whichcanbescaledupto75Abyaddingmoreenvi