**Part Number:**UCC28063A

**Tool/software:** WEBENCH® Design Tools

Hi,

Trying to design a 600W PFC unit using the UCC28063A I used the WEBENCH tool.

For the L1 and L2 the suggested NstoNp is 7.413m. Does this means that Np/Ns = 1/0.007413=135?

From the datasheet eq 22 it is shown Np/Ns = 8. Also the same is given with the excel calculation tool.

Could somebody give a clarification?

Thanks!