TMS320F28075: Question about how to use 3 separate external sync signals.

Part Number: TMS320F28075

Tool/software:

Hello.

As I asked before, I would like to drive the PWM individually using 3 separate external sync sources, like below.

My question :

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1471818/tms320f28075-3-ch-of-ext-sync-in

Is it possible to implement it with the above configuration?

Looking at the internal connection diagram between the Simplified ePWM Modules in TRM, it seems that the SyncIn of the ePWM module has already been determined. Therefore, I think that the SyncIn of ePWM9 and 12 cannot be used separately as I thought. Am I right?

If this is right, is there a way to operate the modules from ePWM7 to 12 by receiving three separate external sync signals?

Best Regards,

0 Aishwarya Rajesh 13 days ago

TI__Genius 10945 points

Sungho,

The expert is currently out of office and will respond to your query when they return next week.

Best Regards,

Aishwarya

0 Allison Nguyen 11 hours ago

TI__Mastermind 21180 points

Hello,

Thanks for you patience. I wanted to first check in and see if you are still having issues implementing this setup? Please let me know if there is any change or other specific issues you are having here. The only external sync sources are the two channels EXTSYNC1 and EXTSYNC2. Are you still having issues with the three external sync sources? Thanks!

Best Regards,

Allison

0 SUNGHO CHA 5 hours ago in reply to Allison Nguyen

Prodigy 30 points

hello

I'm holding this topic and waiting for TI's response.

Is there no way to control the PWM using three separate external sync sources?

Please reply

Best Regards,

C2000™︎ microcontrollers

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TMS320F28075: Question about how to use 3 separate external sync signals.