ripple current
Posted by: vasya_k
on
HI. I use LNK404. How to get rid of ripple current at 50% output with a frequency of 100Hz?
コメント
Thank you. In my case, capacitors are not suitable as a small place. When the active filter efficiency drops to 70%, as a ripple should be less than 10%. There are some other decision circuit with high power and low pulse current of <10%?
If your still talking of output ripple, in single stage pfc, line ripple will always be there and you can only reduce it by increasing output cap or burning the ripple i.e thru the active ripple filter.
The ripple current your seeing which is twice the line frequency your using and always present on a single-stage pf configurations. You can reduce the ripple by increasing the output capacitance or if you dont have much space for a bigger output cap, you can use an active ripple filter described on the attached DER link
http://www.powerint.com/sites/default/files/PDFFiles/der288.pdf