Hello,

I want to control 4 DC motors (single direction, no H-bridge) using 4 HWPWM outputs from a PIC. The PWM frequency is the same on all 4 outputs, the only thing that is different is duty cycle (since I want to change speed). I am also monitoring the BEMF from each motor commutation to "close the loop" and maintain set speed.

I looked at the 16F616, this is set up to drive 1/2 bridge or full bridge but does NOT allow all 4 HWPWM output at the same time. I would appreciate input from the group, if anyone has experience with this, your insight would be greatly appreciated!!!!

Best Regards,
Nick