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78M6618安全注意事项

资料介绍
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。

78M6618
Safety Precautions
Simplifying System Integration APPLICATION NOTE

AN_6618_028 April 2010

Introduction
When using a shunt as a current sensor with the 78M6618, V3P3 must be directly connected to the
NEUTRAL wiring for precise energy measurement accuracy. This topology presents two potential safety
issues:

The 78M6618 ground pin is normally -3.3 V below earth ground.
In the event of a LINE wiring reversal, the 78M6618 ground pin becomes 120/240 VAC.

Therefore, any external……
78M6618安全注意事项
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