Disable INN3366C on primary
Dear Sir or Madame,
is there any recommendation how to switch off INN3366C on the primary side. We need some kind of second level protection that switches of the primary side if there is a output voltage higher than allowed. We know that this feature is implemented in the INN3366C as well using the reflected voltage but to have a redundant switch-off feature, we have to use an independent monitoring circuit in parallel.
The idea is to have an optocoupler triggered from the seconary side that switches off the primary if the voltage on the secondary is too high. With some hysteresis it will reactivate the primary if the voltage falls back to a defined values. If this functionality has to be latching (till secondary voltage falls below the minimum voltage powering the latching circuit) or toggling is today not defined.
Is the only way switching off the AC input voltage or is it an option shorting BPP to GND as it's the supply voltage of the MOSFET driver?
Thanks and Regards