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TMS320F28335: TMS320F28335 PWM dead-band use

user3434218
Intellectual 690 points
Part Number: TMS320F28335


Hi Expert,

I use TMS320F28335 EPWM1 overflow interrupt, Interrupt cycle is 62.5us, 16k, EPWM is subtraction count. Will load CMPA at zero.

My software will over 62.5us in interrupt sometime. I want check with you if this status can change dead-band between EPWM1A & EPWM1B.

  • 0
    TI__Mastermind 27200 points
    If I understand correctly you want to modify the dead-band settings from an ISR which may not be synchronized with the PWM pattern. The dead-band registers (DBCTL, DBRED, & DBFED) can be written to at any time, however on F28335 none of them are shadowed so updates take immediate effect.

    I'm not sure I've completely understood the question so please post back if this doesn't answer it.

    Regards,

    Richard