78M6612安全注意事项

摘要：本应用笔记介绍的78M6612电能计量芯片工作时的安全防范。文章阐述了隔离的测试设备，78M6612评估（EV）板，在电路仿真器，通信接口的预防措施。

78M6612AMaximIntegratedProductsBrandSafetyPrecautionsAPPLICATIONNOTEAN_6612_024March2010IntroductionWhenusingashuntasacurrentsensorwiththe78M6612,V3P3mustbedirectlyconnectedtotheNEUTRALwiringforpreciseenergymeasurementaccuracy.Thistopologypresentstwopotentialsafetyissues:The78M6612groundpinisnormally-3.3Vbelowearthground.IntheeventofaLINEwiringreversal,the78M6612groundpinbecomes120/240