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UCC28220-Q1: interleaved boost converter

Akshay Rote
Intellectual 370 points
Part Number: UCC28220-Q1

Hello there,

I am working on interleaved boost converter using UCC28220-Q1. Line  and load regulation is as required, but as I increase  load, one of the inductor is carrying substantially more current than the other inductor. I checked the  corresponding pwm waveforms of controller and gate driver output. Both waveform have equal duty cycle at respective  load. Where could be the problem?

Thanks and  regards,

Akshay

  • 0
    TI__Genius 13660 points

    Hi Akshay,

    If the inductance values of two channels are the same,  their current should be the same.

    Can you check the values of two inductance?

    And please provide the waveform of OUT1, OUT2, inductance current of channel 1 and inductance current of chaneel 2?

    Regards,

    Teng