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UCC28070 for high side switches

Other Parts Discussed in Thread: UCC28070

I have a question regarding the chip UCC28070. This is a PFC CCM controller. In the datasheet, the application is conventional interleaved boost converter in which MOSFETs are low side. My question is : can this chip drive high side switches. Is it possible to drive high side switch with additional isolated gate driver combined with this chip.
Thanks in advance

  • Hi David,

    To drive the high side switch you will have to use an additional isolate gated driver with this IC as you suggest.

    The IC is not capable of driving the switch in the high side position itself. It is possible to use a gate drive transformer as well. Driving the switches in the high side position brings additional complication and risk in the design.

    Regards

    Peter