High-Side Current Sensor Has Period Output

Abstract:TheMAX4374high-sidecurrentsenseamplifierwithtwointernalcomparatorsisusedtoproduceapulse-widthoutputsignalproportionaltothecurrentbeingsensed.ThissimplecircuiteliminatestheneedforadiscreteA/Dconverter.Maxim>AppNotes>AMPLIFIERANDCOMPARATORCIRCUITSKeywords:currentsenseIC,highsidecurrentsense,currentsenseamplifier,pulsewidthsignaloutput,May31,2002currentsenseresistorAPPLICATIONNOTE1084High-SideCurrentSensorHasPeriodOutputAbstract:TheMAX4374high-sidecurrentsenseamplifierwithtwointernalcomparatorsisusedtoproduceapulse-widthoutputsignalproportionaltothecurrentbeingsensed.ThissimplecircuiteliminatestheneedforadiscreteA/Dconverter.High-sidecurrentmonitoringisfoundinmanybattery-poweredproductsthatrequireaccuratemonitoringofloadcurrent,chargercurrent,orboth.Innon-portableapplicationshigh-sidecurrentmonitoringservesasapower-supplywatchdogthatcanflagafailureindownstreamdevices.It