We would like to design bridgeless PFC circuit with UCC28070.
Condition will be as nelow:
AC Input:85-264V
DC out:400V,300W-1kW
There is Appnote using UCC28070 with BrridgelessPFC:
UCC28070 Implement Bridgeless Power Factor Correction (PFC) Pre-Regulator Design
http://www.ti.com/lit/an/slua517/slua517.pdf
In Appnote,it is seems to culcurate R_SYN,L1 and L2 to set current settings.
Also, it is need to achive a reduction in conducted-EMI by ttrimming R_RDM and C_CDR.
Should other parameters be followed in the interleaved PFC?
Best regards,
kyt