测序电路提供伪电压跟踪器

摘要：本应用笔记介绍了三种方法来跟踪电源轨之间的电压。功能的电路，也最简单的方法，采用的MAX6819电源定序执行开环电压跟踪。

Maxim>AppNotes>CircuitProtectionKeywords:power-supplysequencers,voltagetrackingAug27,2009APPLICATIONNOTE4413SequencingCircuitProvidesPseudoVoltageTrackerAbstract:Thisapplicationnotepresentsthreeapproachestotrackvoltagesbetweenthesupplyrails.Thefeaturedcircuit,alsothesimplestapproach,featurestheMAX6819power-supplysequencerwhichperformsopen-loopvoltagetracking.ThisdesignideaappearedintheJune1,2006issueofPortableDesignmagazine.Modernmicrocontrollers,DSPs,andASICsrequiremultiplesupplyvoltagesforproperoperation.Withhigherspeedandbetterprocessingcapabilities,thevoltagesandfabricationgeometriesofthesedeviceshavebeenscaleddowntominimizepowerd