78M6618安全注意事项

摘要：本应用笔记介绍78M6618功率和能量测量IC设计时的安全防范。涵盖的主题包括隔离测试设备，78M6618评估（EV）板，在电路仿真器，通信接口。

78M6618SafetyPrecautionsSimplifyingSystemIntegrationAPPLICATIONNOTEAN_6618_028April2010IntroductionWhenusingashuntasacurrentsensorwiththe78M6618,V3P3mustbedirectlyconnectedtotheNEUTRALwiringforpreciseenergymeasurementaccuracy.Thistopologypresentstwopotentialsafetyissues:The78M6618groundpinisnormally-3.3Vbelowearthground.IntheeventofaLINEwiringreversal,the78M6618groundpinbecomes120/240VAC.Therefore,anyexternal