stepper motor driver PUBLIC

Not provided.

This circuit was designed to be able to drive stepper motors. This is accomplished using several functional blocks which have many uses aside from driving stepper motors. These functional blocks are, a microcontroller, 4 half bridges and two current sense circuits. The microcontroller controls the half bridges and the current sense circuits provide the microcontroller with the current entering/ leaving two of those half bridges.

As a stepper motor driver, the microcontroller (and it's software), half bridges and current sense circuits would form a control loop which would drive the desired quantity of current through the coils of the stepper motor. However you could just as easily change the software and use three of the outputs ,including the two with current sensing, to drive a three phase motor. You could, again, just as easily, use this to drive two solenoids or some relays etc. You get the idea.

for more information see the following blog posts