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TMS320F28032: High Resolution on EPWMxA and EPWMxB complementary with Dead Band Control

user4997907
Intellectual 270 points
Part Number: TMS320F28032

Hello,

What are the restrictions on EPWMxB when High Resolution is being used. If I generate two PWM signals EPWMxA and EPWMxB as complementary waveforms will EPWMxB be high resolution as well?

Thanks

  • 0
    TI__Mastermind 42195 points

    user4997907,

    The B signal path of an ePWM channel can generate a high-resolution output by either swapping the A and B outputs (the high-resolution signal will appear on ePWMxB instead of ePWMxA) or by outputting an inverted version of the high-resolution ePWMxA signal on the ePWMxB pin.

    Stated another way, if you use the dead-band sub-module only one channel of the PWM can be high-resolution not both.

    If you don't need dead-band control and only want a high-resolution complementary PWM signal this can be done with "HRCNFG.SELOUTB = 1".

    Regards,
    Cody 

  • 0 in reply to Cody Watkins
    Intellectual 270 points
    Thank you for the speedy reply!