Hello everyone,
I am designing a AC-DC (200W) power supply.
I was trying to figuring out, that everything is working properly, but instantly everything drops down.
The issue is that, when I powered the schemе, NMOS transistors on the secondary side of LLC converter got shorted. They are rated for 40V/21A, so they should handle with max output consumption (14.4V/13.8A). Other way is to generate so high voltage on gate, but they are +-20V, so it also should be Ok.
So, how can I understand and solve this issue? Can anyone help?
Regards,
Petar
I am designing a AC-DC (200W) power supply.
I was trying to figuring out, that everything is working properly, but instantly everything drops down.
The issue is that, when I powered the schemе, NMOS transistors on the secondary side of LLC converter got shorted. They are rated for 40V/21A, so they should handle with max output consumption (14.4V/13.8A). Other way is to generate so high voltage on gate, but they are +-20V, so it also should be Ok.
So, how can I understand and solve this issue? Can anyone help?
Regards,
Petar