DRV8711EVM "Channel B Pre-Driver Fault"

Hi,

My customer is evaluating the DRV8711EVM.

Once in a while, the DRV8711 will go into a fault condition and the status register will show: "Channel B Pre-Driver Fault"

This seems to happen more frequent in 1/8 step vs 1/4 step mode. Also seems to be more frequent at higher motor current settings, but its not very consistent.

Any idea what it might be? Any gate resistors needed?

Thanks,

EJ