Feedback compensation on flyback PFC
Feedback compensation on flyback PFC
(OP)
Hello,
I write concerning a flyback PFC stage with L6561.
I refer to Figure 16, page 18 of the following app note...
http://w ww.st.com/ stonline/p roducts/li terature/a n/5956.pdf
There are feedback compensation components on both primary and secondary sides. Is this unusual?
I would have thought the gain and phase margins could have been set on just the secondary side alone.
here is the L6561 datasheet...
http://www.st.com/stonline/books/pdf/docs/5109.pdf
Pin 1 is inv input of error amp
Pin 2 is output of error amp
I write concerning a flyback PFC stage with L6561.
I refer to Figure 16, page 18 of the following app note...
http://w
There are feedback compensation components on both primary and secondary sides. Is this unusual?
I would have thought the gain and phase margins could have been set on just the secondary side alone.
here is the L6561 datasheet...
http://www.st.com/stonline/books/pdf/docs/5109.pdf
Pin 1 is inv input of error amp
Pin 2 is output of error amp




