Hello everyone, I am new on this forum, so please warn me for my mistakes.
I am working on a project that is going to drive a stepper motor. I am trying to design a pcb that has wide current range driver for stepper motor on it. According to Pololu’s website, the highest continious current I can get is 1.6 A by using TB67S249 but I need 4.2 A for my project. So I planning to use H-bridges for each coil to increase current. I wonder if anyone ever tried this before or do you have any suggestions. I also wonder that will it be possible to limit current. I think the current across the coil should be 2xVrefxHfe
of transistors that i will use. Any idea could help.
Thank you.