CCS/UCD3138: UCD3138 Automatic Mode Switching

user5779721

Part Number: UCD3138

Tool/software: Code Composer Studio

In UCD3138 Automatic Mode Switching, How to make the DPWM work on PCM mode when the Filter Duty trigger goes above the High Upper threshold and the DPWM output small Duty when the Filter Duty trigger goes below the Low Lower threshold.

over 6 years ago

0 Sean Xu over 6 years ago

TI__Genius 14580 points

Hello,

Please make High Upper threshold = HIGH Lower threshold.

Low Lower threshold = Low Upper threshold

Regards,
Sean

0 Sean Xu over 6 years ago in reply to Sean Xu

TI__Genius 14580 points

If you have a different thought, please open a new thread.

0 user5779721 over 6 years ago in reply to Sean Xu

Intellectual 525 points

What is the new thread means?

Is that mean i should updata in standard interrupt ?

How to updata the Value of TH & TL that make sure it working normaly?

I found the min_period connect with the DPWM ,if i adjust the min_period ,should I initialize

DPWM again?

0 Sean Xu over 6 years ago in reply to user5779721

TI__Genius 14580 points

New thread means new question.

TH and TL afffects minimum period, and max period, and gain. Be careful to change them on the fly.

Yes, if you want to change minimum switching period, DPWM period, eventx have to be re-initialized because they will update the new period, DPWMA and DPWMB rising edge.

Regards,
Sean

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CCS/UCD3138: UCD3138 Automatic Mode Switching