question about Totem-pole Bridgeless Boost PFC Converter

Thread Starter

may be chriss

Joined Aug 30, 2023
I am a college student majoring in electricity and electronics in Korea
I'm currently working on a pfc converter and I have a question for engineers

Photo 1 is a topology trying to make 60vdc with 20ac

The second picture is an output voltage waveform for it, shouldn't it look like a dc instead of a radio circuit like that?

And I know that 2 boost converters operate with 180 degree phase difference but I don't know how to do the switch duty ratio

The third photo shows the duty ratio of the switch operating at 100 kHz from 0 to 200 using the gating block
Nevertheless, the input voltage current waveform changes, but the output voltage does not change

I wonder how the duty ratio should be to increase the output voltage