AN1966可控硅过压保护用一个Transil™

AN1966可控硅过压保护用一个Transil™

AN1966
Application note

TRIAC overvoltage protection using a Transil

Introduction
In most of their applications, TRIACs are directly exposed to overvoltages coming from the
mains, as described in IEC 61000-4-5 or IEC 61000-4-4 standards. When TRIACs are used
to drive resistive loads (ex: temperature regulation), it is essential to provide them with
efficient overvoltage protection to prevent any turn-on in breakover mode that could lead to
device damage.
A traditional method to