Phase shifted PWM on Tiva c series

Dilgush Idikkula

Other Parts Discussed in Thread: TM4C123GH6PM

Is there is any option to generate phase shifted pwm pulses in the tm4c123gh6pm mcu? i need four phase shifted pwm signals which are 90 degree apart,ie 0 degree, 90 degree, 180 degree and 270 degree. I'm unable to see any phase shift registers in the processor document.

over 9 years ago

0 Luis Afonso over 9 years ago

Guru 20670 points

I found this on 180 phase shift but for 90 i think you have to manually do it by enabling the PWM at the right time

https://sites.google.com/site/narasimhaweb/projects/phase-shifted-pwm-on-tiva-c-series-microcontrollers-with-dead-time-control

0 Dilgush Idikkula over 9 years ago in reply to Luis Afonso

Prodigy 100 points

Thanks Luis for the information. But my requirements are different and this wont help me. There will be trouble for the waveforms if i include dead time.

0 Amit Ashara over 9 years ago in reply to Dilgush Idikkula

TI__Guru**** 244380 points

Hello Dilgush, Luis,

It should be possible to do using the synchronization features of the PWM generators. There may be a startup glitch on the pulses but after once cycle of PWM it would be phase aligned as expected

Regards

Amit

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Phase shifted PWM on Tiva c series