I can't really help you much here. When I first needed it few years ago I did google search and found bunch of articles on motor control (from Microchip I belie

I can't really help you much here. When I first needed it few years ago I did google search and found bunch of articles on motor control (from Microchip I believe) that also had some designs, Once I understood basic theory I then designed my own circuit that after few tries worked fine. It is highly specialized for my particular product. What is out there now in open designs I have no idea as I do electronics extremely rarely. I am developing mostly software products.