TMS320F28075: ePWM: Trip Zone Clearing: When does it take effect on PWM Outputs?

Niloc2004

Part Number: TMS320F28075

Hi All,

I am interested in the timing of when clearing ePWM DC Trip Events takes effect in relation to ePWM cycles. Will the ePWM A/B outputs immediately get set to their non-tripped value? Will it wait until the next PRD / Zero? The cycle by cycle block diagrams appeared to have some reset timing, but I couldn't tell about the DC / One Shot Events.

I am concerned about glitching on the ePWM A/B output if the trip zone flag is cleared randomly in the period.

Thanks,

-Colin

over 4 years ago

+1 Marlyn Rosales Castaneda20 over 4 years ago

TI__Mastermind 25290 points

Hi Colin,

The cycle by cycle trip does have the configuration of getting cleared at the next zero, period, or zero/period event. For the one-shot and dc trip events, as soon as the trip flag gets cleared the epwm outputs will revert back to their non-tripped values. You can try to strategically clear the trip flags when you are at known points throughout the epwm cycle in order to help minimize your concern.

Best Regards,

Marlyn

0 Niloc2004 over 4 years ago in reply to Marlyn Rosales Castaneda20

Intellectual 440 points

Thanks!

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28075: ePWM: Trip Zone Clearing: When does it take effect on PWM Outputs?