简单的电路免受过电压的汽车视频驱动程序

摘要：该电路保护汽车意外地接触到汽车的电池电压（16V最大）视频放大器，电压检测故障，并迅速打开功放和电池之间的连接。

Maxim>AppNotes>CircuitProtectionVideoCircuitsKeywords:automotivecircuitprotection,videoDACs,digitalinverters,MOSFETsNov16,2010APPLICATIONNOTE4516SimpleCircuitProtectsAutomotiveVideoDriversfromOvervoltageAbstract:Thiscircuitprotectsautomotivevideoamplifiersfromaccidentalexposuretothecar'sbatteryvoltage(16Vmaximum),bysensingvoltagefaultsandquicklyopeningtheconnectionbetweenamplifierandbattery.AsimilarversionofthisarticleappearedintheMay20,2008issueofElectronicDesignmagazine.Inatypicalautomotivevideoapplication,thevideoDAC(fromarearcameraorDVDplayer,forexample)isfollowedbyalowpassreconstructionfilterandanamplifierth