PWM Dead time

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alanwms
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PWM Dead time

Post by alanwms »

Hello:

Has there been any desire or efforts to include the dead time for PWM signals in 16 bit pics?

If not then:

Any future thoughts for this?
Any ideas on implementing dead time?

I believe that a significant amount of hardware and thought is required in order to allow H bridge transistor shutoff time to occur,

Thoughts?

chipfryer27
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Re: PWM Dead time

Post by chipfryer27 »

Hi

This gives a basic overview of H-Bridge for those unaware of the potential problem

https://www.allaboutcircuits.com/techni ... -time-pwm/

Microchip have a lot of resources regarding control and implementation and many PICs have programmable Dead Band

https://www.microchip.com/en-us/solutio ... -and-drive

This also give a little insight on calculation using switching times of MOSFETS

https://electronics.stackexchange.com/q ... input-to-a

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alanwms
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Re: PWM Dead time

Post by alanwms »

I was wondering about the implementation in flowcode?

chipfryer27
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Re: PWM Dead time

Post by chipfryer27 »

Hi

Outputs > DC Motor has properties for using hardware H-Bridge that include setting dead band values. I've not used it though.

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alanwms
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Re: PWM Dead time

Post by alanwms »

I'll check that out - Thank you.

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