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Circuit to drive 8 IGBT gate drivers using 2 PWM pins on Ard
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Circuit to drive 8 IGBT gate drivers using 2 PWM pins on Ard

by ruhi10 on Mon Sep 20, 2021 4:01 pm

I am using digital pins 9 and 10 to generate a 10kHz PWM on Arduino Uno. So, I got 2 PWMs.
But I need to drive 8 IGBT gate drivers using these 2 PWMs (4 IGBTs using PWM1 and other 4 IGBTs using PWM2).

When I connected 2 PWM pin of Arduino to 4+4 gate drivers, the Arduino went bad and doesn't work any more because the gate drivers might have pulled in a lot of current. So, I was wondering if there is any product or extension that I can use to avoid this problem and power 8 gate drivers using 2 PWM signals.

I see an Adafruit extension board https://www.adafruit.com/product/815#Slide3 but it has a frequency limitation of 1.5kHz.

Any help would be appreciated.

ruhi10
 
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Re: Circuit to drive 8 IGBT gate drivers using 2 PWM pins on

by franklin97355 on Mon Sep 20, 2021 5:55 pm

Can you post the specs of you IGBTs? Also a schematic of how you want/ tried to connect them.

franklin97355
 
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