过流监测工作至26V

摘要：利用电流检测放大器，高边MOSFET驱动器，锁存电压监测电路可以很容易地构建免受过流条件和工作在高达26V的高电压。Maxim>AppNotes>AMPLIFIERANDCOMPARATORCIRCUITSCIRCUITPROTECTIONKeywords:overvoltage,overcurrent,overvoltagecurrent,protection,set,trip,point,circuitbreaker,RS232,RS-232,rs232,USBSep11,1998APPLICATIONNOTE240OvercurrentMonitorOperatesupto26VAbstract:Usingacurrent-senseamplifier,ahigh-sideMOSFETdriver,andalatchingvoltagemonitoracircuitcanbeeasilyconstructedthatprotectsfromovercurrentconditionsandoperatesatvoltagesashighas26V.WidespreaduseoftheUniversalSerialBus(USB)hasledtoaselectionofovercurrent-protectioncircuitsforsupplyrailsinthe+2.7Vto+5.5Vrange,butfewproductsareavailableforvoltagesabovethatrange.ThecircuitbreakerinFigure1operatesonsupplyvoltages