DRV8701E Question

Hi,

FAULT:

I am currently using DRV8701E in my application. I found that the FAULT line asserted when I first enabling the driver through SLEEP pin. Same thing happen when the driver is disabled. Is this an expected behavior?

VREF

AVDD of this driver has very loose voltage range. So the current chopping range will be loose as well if the VREF is reference to AVDD. Can I use external supply which has better tolerance as the reference voltage for VREF to achieve better accuracy?