In Design of Link switch-PH, BP pin or FB pin is used for OVP.
Which is better?
Use BP for latching OVP and use FB for auto-restart OVP.
Normally latching OVP is more preferrable to guarantee safe operation of the output cap and output rectifier. The output cap has a surge voltage capability within a limited time therefore you have a fexibility to use slightly lower capacitor voltage rating than the auto-start-OVP.
Thanks a lot.
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