How can avoid overlapping of pwm from different channels?

Tejashree · ‎2021-12-09

I am writing a simple 6 step bldc motor control using Hall sensor(Complementary PWM).

When I try to switch the pwm(example when HALL input changes from 110 to 101) channel 1 and channel 2 gets over lap.I have inserted Deadtime.

One in red is channel 1 and blue is channel 2.

how can prevent this over lap?

KnarfB · ‎2021-12-10

deadtime is applied within a channel (between CHx and CHxN outputs), so what exactly do we see in the above diagram? Is the red channel tri-stated at the end? Are red and blue two PWM channels of the same timer?

KnarfB

Cristiana SCARAMEL · ‎2021-12-14

Hi @Tejashree,

did you solve your issue?

Otherwise, can you answer the questions above from KnarfB?

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