UCC28070 300W Interleaved PFC

In higher power applicaTIons to uTIlize the full line power and reduce line currentharmonics PFC Pre-regulators are generally required. In these high power applicaTIonsinterleaving PFC stages can reduce inductor volume and reduce input and outputcapacitor ripple current. This results in smaller overall magneTIc volume and filtercapacitor volume increasing the converters overall power density. This is madepossible through distributing the power over two interleaved boost converters and theinductor ripple current cancellation that occurs with interleaving, reference [5]. Thisapplication note will review the design of a 300W two-phase interleaved power factorcorrected (PFC) pre-regulator. This power converter achieves PFC with the use of theUCC28070 interleaved PFC controller, reference