Hello Rick,
I want to thank you for suggesting the DRV8886AT device. I have just completed testing of a board using a single DRV8886AT and it works very well. The layout is simpler, the motor runs more smoothly with the AutoTune, and it needs fewer external components overall. For me it is a perfect fit. I can now resume the development of my project using three devices on a single board.
I appreciate all the help from you and Luis.
John