MOC30xx type isolators for 380Vac application (TRIAC firing)

[samuelr]

Hi All,
Does anyone know if there are any MOC30xx or similar optocouplers available for 380Vac application.

I am current using MOC3022 which has a output repetitive of only 400V which only allows me to fire my TRIAC at about 48 deg. sin angle. I want to be able to go 90 deg. which would be 535V, I have tried this but it does not work that well. Also continous usage would damage the isolator. Any suggestions?

Samuel

 

[KlausST]

Hi,

Looking at fairchildsemi.com there are FOD42xx types...

Klaus

 

[samuelr]

Klaus thanks, that is what I was looking to hear, just one small question where I am 100% clean on the term + how it affects my driver.

The Output Repetitive Peak offstate voltage, I am unclear what this means and how it affects the IC. Does it mean even when the driver is not switched on the max allowed voltage from the Line to the MOC3022 is supposed to be 400Vpeak? Or does it mean that the max. allowed voltage on the output (on state) is 400V or works properly only up to 400Vpeak?

I dont see any problems with the IC on the offstate its just the on state where I see if cannot go beyond 48 deg. sine Just asking so that I can be clear on this.

Samuel