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ADum3223 issue (H bridge)

Question asked by kj.liu on Jun 11, 2013
Latest reply on Jun 28, 2013 by RSchnell

Hi RSchnell,

 

    The attached file are my schematic and the issue is when I put the loading in the H bridge , there is must H bridge's upper right gate driver burn out , but I can't find out any different between upper right and upper left. although I don't know why always upper right gate driver burn out and the upper left is fine, I think the reason might like the Circuit Note(CN0196) say .So, I think if I put the Zender diode to do the over-voltage protection , this issue might be solved. Am I right? or I need to do another thing to protect it.  Please give me any advice.

 

Thank you

KJ

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