I'm new here, and new to Arduino (Coming from Basic Stamp). Anyways, I am making an attempt to control a high voltage (~48V), high current (~6A), bipolar (4 Wires) stepper motor. The motor can be seen here, which has data sheets and what not: http://www.automationdirect.com/adc/Shopping/Catalog/Motion_Control/Stepper_Systems/Motors_-z-_Cables/STP-MTRH-23079
I understand how to drive a stepper motor, and I have found the bipolar schematics on the Arduino library, but none of the solutions handle a motor this big. Most drivers use the SN754410 or L293 from what I've seen. I have also noticed stacking of the SN754410 chips for higher current ratings, but I suppose I would need 6 of them, and they still will not handle 48V.
Would I have to build my own dual h-bridge from NPN Transistors or MOSFETS? Does anyone have an example circuit that has some protective features, such as the back current diodes. Would this be enough protection to avoid damage to the Arduino? I would also like to keep this relatively cost efficient.
Thanks in advance! I hope I made everything clear.