I used spice model downloaded from ST product page. But model behaviour is highly strange in LTspice XVII. There is 60V Gate voltage in I. and IV. quandrant. Negative gate current turn triac ON only in one quadrant.Is it possible to use ST models in ...

Hi all, I am confused about FB pull-up current. At start, ZCD detects overvoltage, so I understand that FB is pulled down. After 300ms, FB is pulled by 0.6mA and after next 500ms FB is suddenly pulled by 1mA. How does overvoltage protection work? How...