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CCS/TMS320F28035: TMS320F28035 issue

Part Number: TMS320F28035

Tool/software: Code Composer Studio

When the resistive load was loaded at the PFC level and converted from DCM to CCM mode at about 2.4kw, the current waveform was abnormal.

After loading, the current waveform is distorted, which is easy to cause shock on both sides.

At present, the input current tends to oscillate on both sides, and the current waveform is not a sine wave, as the "test wave" image.(Green for A phase current, blue A phase voltage, yellow for A phase on the tube drive)

The drive is unipolar modulating according to the control voltage, and the control voltage is basically opposite to the phase voltage when it is stable.

Please analyze whether there are control reasons.

  • Andong, 

    On this forum we are able to support specific device related questions. I feel your question requires extensive research and knowledge on three phase PFC . You may have to reach out to a engineering consulting company to evaluate your design in details, or you can post on some engineering forums to see if you have enthusiasts who can help.

    As there is no specific question for C2000 MCU or any supported solution I am unable to provide support through this forum for this topic. 

    -Manish