Hi Team,
One of the customer is currently using UCC28070-Q1 for an interleaved PFC boost converter. They are using 2 current transformers in each leg of the PFC similar to App note figure 3: https://www.ti.com/lit/an/slua896/slua896.pdf
But the above Current transformers are increasing BOM cost, so can a current shunt resistor of 1 milli ohms be used in each leg for the PFC MOSFET’s current measurement (followed by an op amp based filter and voltage follower before feeding the signal to the CSA/CSB pins)?
Regards,
Naveen