标签: 三重pwm控制器

TheISL9440,ISL9440AandISL9441arequad-outputsynchronousbuckcontrollersthatintegrate3PWMcontrollersand1lowdrop-outlinearregulatorcontroller,whicharefullfeaturedanddesignedtoprovidemulti-railpowerforuseinproductssuchascableandsatelliteset-topboxes,VoIPgateways,cablemodems,andotherhomeconnectivityproductsaswellasavarietyofindustrialandgeneralpurposeapplications.Eachoutputisadjustabledownto0.8V.ThePWMsaresynchronizedat180°outofphasethusreducingtheRMSinputcurrentandripplevoltage.ApplicationNote1550ISL9440EVAL2Z:TriplePWMStep-DownSynchronousBuckControllerandOneLDOISL9440EVAL2ZEvaluationTABLE1.FEATURESOFISL944xxFAMILYBoardSWITCHINGSOFT-STARTINGPARTEARLYFREQUENCYTIMETheISL9440EVAL2ZevaluationboardfeaturestheNUMBERWARNING(kHz)(ms)ISL9440.TheISL9440isaquad-outputcontrollerthatintegratesthreePWMsynchronousbuckcontrollersandI……