Other Parts Discussed in Thread: UCC27714
I want to control a 110v 20a DC PM motor with an H-bridge (for reversing/braking) using N/P-channel MOSFETS to keep the gate voltage requirements within the usable range of the MOSFETS.
My space and power restrictions are almost none, or at least far outside the realm of practical application. It's for an industrial application so I would like to overshoot the minimum requirements and operate far below maximum ratings. I'm still learning about all the ins and outs of driving MOSFETS with PWM, but one thing seems to be clear and that is that I must use P-channel MOSFETS to compliment the N-channels because driving the highside n-channels would require around 120v at the gate for a 110v load. If I'm correct in this case, and I've selected appropriate sized MOSFETS for the external drivers, would the DRV8701 driver be a good choice to drive both n and p-channel MOSFETS in an H bridge? If not, can you make a better recommendation?
If it matters I'm looking at a pair of IXYS MOSFETS rated at 500v/40a for each half, so just 4 very large FETs total, and am trying to keep the circuit as simple as possible.I'm not opposed to changing course if there's a better best practice though. Will probably use PIC/AVR for driver inputs, haven't quite decided yet, probably depends on what I have in the bins.
Thanks in advance!
