I'm working on a dual h-bridge design and I have a question concerning delivering the PWM signal. I'll be using N-Channel Mosfets on the high and low side and a PIC to create the PWM signal.
My rudimentary thinking(non EE) says I should send the PWM to either of the high side mosfets, depending on the direction that I want to go, while turning on, and leaving on the opposite low side.
However, a lot of schematics and data sheet app notes for gate drivers I've looked at, indicates that the PWM signal is sent to both high side and opposite low side with one being inverted.
Can I drive the bridge the way I'm thinking or is there a down side, such as decreased eff or something.
Thanks,
John