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Poly-phase PWM

Question asked by Mario Simunic on Feb 11, 2018
Latest reply on Feb 11, 2018 by waclawek.jan

I'm need to generate N channel (N>1) PWM output in a such a way that one channel is main 'governor' lets say ch0. Every other channel repeats the same duty, but with time shift (or or phase shift).
Ch1 need to set pulse ch0_duty after ch0 set the pulse. Ch2 need to set pulse ch0_duty after ch1 set the pulse (or 2*ch0_duty after ch0 set pulse). Special case would be to generate symmetrical three-phase signal if duty=50% and N=3. Constraints are: duty <= 50%*2/N; N*Ton=T.
Iv'e attached drawing to be more clarifying.

 

Is there any STM32 microcontroller which can generate such kind of signals using only PWM/timer/counter module, without ISR? Or maybe some kind of other integrated circuit which can generate such PWM signals?

Please advice.

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