DRV8353: Split ground design with multiple gate drivers

Tool/software:

Hello,

I would like some advice on how one should split the power and digital ground in a multi-channel motor driver design.

For a single channel driver, the recommendation is to put a ground tie near the DRV8353. But for multiple of these gate drivers, where would the star point go?

Since I intend for each channel to operate high power motors I am concerned that there will be a shift in the ground potential at maximum load. And that it may interfere with the current sense readings if the digital and power grounds are changing slightly relative to each other.

I am also wary of stitching the ground planes with net ties at each channel's gate driver as it may provide unintended high current return paths through the digital domain.

Please advise what layout methodology I should use here.

Thanks,

K