OVP

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Sir,

In Design of Link switch-PH, BP pin or FB pin is used for OVP.

Which is better?

Ravik

 

Hi Ravik,

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.

 

Regards,

PI-Jono

 

Dear Jono,

Thanks a lot.

Ravik