Dear team,
I have a question regarding "SAMPLED FEEDBACK" block on the functional block diagrams.
This block is positioning between comparator of Vref and FB-pin.
1. What is the function of this block?
D/S says that PSR is using "sampled valued of primary winding voltage", thus I guess it maybe doing just sample the FB values.
But if it is I have no idea how Vin is used.
2. Could you please tell me also how Vin is used?
Best regards,
Yuto