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DRV8841: Avoiding/Reducing Effect of ESD

Part Number: DRV8841

Hello Motor Driver Team, please see attached schematic and question below, could you help with any suggestions for our customer? 

Connectors J5 and J6 go to DC brush  motors.

When I have ESD ~ 6 kV to the body of motor the chip shuts off and signal FAULT is active.

I have to reset chip.

Is there a way to avoid/ reduce effect of ESD? Perhaps grounding, tranzorb or anything else?

DRV8841_Schematic.docx

DRV8841_Schematic.docx