I'm working on an H-Bridge to control a drill motor that requires 18V and 50A of power. I found and example of an H-Bridge at http://www.hvlabs.com/hbridge.html . I have studied the schematic, and from my knowledge it should work, but I would like to get a 2nd opinion on it before I buy the parts. The schematic can be found at http://www.hvlabs.com/Images/dcmotorcontroller.jpg and more info on the HIP4081 can be found at http://www.hvlabs.com/files/HIP4081.pdf . I
That's 50A of current.
Good point about making sure to test the device at a low current first. I will probably buy 10 and 100Ohm resistors and then test them at a lower amperage to see how much they decrease the PWM.As for the ceramic decoupling, would putting some capacitors in parallel with the H-Bridge work for this?
I will definitely make sure to put resistors between the H-Bridge and board, and I will probably also use a relay to prevent shoot through from a programming error