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Visitor II
June 10, 2024
Question

Dead band not in snyc

  • June 10, 2024
  • 1 reply
  • 803 views

Dear Team,

I am using the STM32F103C8T6 MCU and I am trying to generate PWM signals with dead band.

and according to my configuration dead band is not in sync.

Please let me know what configuration I have to make?

 

 

image.png

Note: I have gate driver which Lin is INVERTED so, that's why I am generating this type of PWM [ you can say complimentary ]

[ I have attach the c file ]

Best and regards,

Dipak 

1 reply

AScha.3
Super User
June 10, 2024

Hi,

you have to set OCx and OCxN complimentary, then you get deadtime on every rising output.

AScha3_1-1718026344336.png

 

If both active hi , you get, what you see on your pic :

AScha3_0-1718026019698.png

So its for driver with both inputs active hi , not mixed hi/lo.

Use a inverter on the active lo driver input - or other driver.

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