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DRV8302: Shutting down H bridge power while keeping DRV8302 powered

Part Number: DRV8302

I am using the DRV8302 in a BLDC motor drive.  I am looking to electronically switch off the power stage bus with a redundant mosfet to add fault tolerance.  I would like to keep the DRV8302 powered while the power bus is turned off.  Should I plan for a high side or low side switch?  A low side switch would be simpler, but I am concerned about exceeding the max voltage rating between PGND and GND of +/-0.3V and max of +/-0.6V on the current amplifiers.