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IGBT MOTOR CONTROL WITH ADUM7234

Question asked by JGG on Sep 1, 2012
Latest reply on Sep 2, 2012 by Subrah

Hi, I'm designing a motor controller with ADUM7234 to drive my IGBT. Testing the board the drivers stop wprking (outputs High no matter the input). I don`t know what goes wrong:

- The dissable ìn was leave floating

- The controller and drivers inputs and outputs was sourced by the same battery (no isolation here)

- No regulator for drivers output, just direct to 12.8v battery

- test with no source in igbts

 

I don't know, it has happened two times. I attached the schematic and board files

 

Any ideas?

 

thanks

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