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RE: TIDM-02013: TIDM-02013

xqp
Intellectual 260 points

hi,

I followed the steps of the first experiment, but failed to generate the PWM waveform.

This experiment is not supposed to be verifying the PFC, so why did you input a direct current voltage of 120?

Could you please tell me exactly how to conduct Experiment One (the open-loop experiment)?

  • 0
    TI__Mastermind 25015 points

    已经收到了您的案例，调查需要些时间，感谢您的耐心等待。

  • 0 回复 Eirwen
    TI__Mastermind 25015 points

    You need to  wait until the "TTPLPFC_autoStartSlew"  counter reach 100 in the expression window. If you don't want to wait you can enter 99. This is to verify the PWM operation in +ve half cycle of AC. It's just a verification step to make sure PWMs generated appropriately for both positive and negative half cycles of AC.

    Also make sure the the inrush relay is closed prior to applying any load. You can check it "TTPLPFC_rlyConnect" in expressions window. If it's not set to "1" you can manually enter "1" just before applying any load.