使用 DS4424 来保证金的直流-直流转换器的输出电压

摘要：DS4424可调节电流DAC用于调整直流-直流转换器的输出电压的边距。本文介绍如何正确选择的直流-直流转换器的反馈分隔线网络电阻值时DS4424受雇于设计。

Maxim>AppNotes>DIGITALPOTENTIOMETERSKeywords:DC-DCconverter,resistivefeedbackdividernetwork,currentDAC,full-scalecurrent,sourceSep22,2008current,sinkcurrent,outputvoltagemargin,powersupply,testmargining,DC-DCconverterfeedbackmarginingAPPLICATIONNOTE4280UsingtheDS4424toMargintheOutputVoltageofaDC-DCConverterAbstract:ADS4424adjustable-currentDACisusedtoadjustthemarginofaDC-DCconverter'soutputvoltage.ThisarticledescribeshowtoproperlyselecttheresistorvaluesofaDC-DCconverter'sfeedbackdividernetworkwhentheDS4424isemployedinthedesign.IntroductionTheDS4424adjustable-currentDACissimilartotheDS4404adjustable-currentDACwithtwomajordifferences.First,theDS4424has127settingseachfor