How should I handle GND and PGND when using the DRV8874 provide 0.5A current, on a very small PCB with a microcontroller?
The datasheet recommends tying both grounds together, but board space is extremely limited.
Is it better to keep separate planes with a single connection point, or use one shared ground plane on such a small board?

 

IF the controller has only one ground connection pin, for both power and signal return.That should have a fairly direct connection to the pin 15 gnd pin of the DRV887 '

 

I use a very similar circuit and I have both power commons connected using a PicMicro.
(BTW. Is the use of the power symbol indicating Earth GND correct in this instance?)