This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TMS320F280049C-Q1: Action of EPWM DC blanking window when switching frequency

Part Number: TMS320F280049C-Q1

Tool/software:

Hi Champs,

Before Offset(n) reaches 0, a new DCFCTL[PULSESEL] signal comes, will DCOFFSET register be reloaded and count down? Will the logic of the blanking window run in the following diagram in situation 1 or situation 2?

Thanks!

Julia

  • Hi Julia,

    Since your blanking window crosses the CTR = 0 and CTR = PRD boundary, the next window still starts at the same offset value after the CTR = 0 or CTR = PRD pulse.

    Best,

    Ryan Ma