正高边电流传感器监视负电源

摘要：本应用笔记采用了高边电流检测放大器监测从​​负电源电压的电流。该电路使用了IC的宽共模输入范围VSENSE在负电源和水平转向正输出电压的小信号放大。

Maxim>AppNotes>AMPLIFIERANDCOMPARATORCIRCUITSBATTERYMANAGEMENTCIRCUITPROTECTIONMEASUREMENTCIRCUITSKeywords:currentsensor,negativesupply,currentsenseamplifier,negativecurrentmonitor,currentsenseMay11,2003amp,currentmonitorAPPLICATIONNOTE2011High-SidePositiveCurrentSensorMonitorsNegativeSupplyAbstract:Thisapplicationnoteusesahigh-sidecurrent-senseamplifiertomonitorthecurrentfromanegativesupplyvoltage.ThecircuitusestheIC'swidecommon-modeinputrangetoamplifyasmallVsensesignalatthenegativesupplyandlevelshiftituptoapositiveoutputvoltage.Alldedicatedcurrent-senseamplifiersaredesignedforhigh-sidesensingonapositivesupply,butyoucanadaptthemtomonitoranegativesupply(Figur