I was looking at an H bridge this weekend and ran a few simulations to run a simple Light source.
It makes perfect sense that a controller can sink and source and each will control the direction of current flow. Obviously makes no difference to the filament globe but a motor would turn in different directions.
What happens if the motors voltage exceeds the gate voltage supplied by the controller? No problem on the N channel mosfets because it Vgs that controls the gate. The P channel mosfets however work on Vgs which will always be open.
Do they normally work on a 5V supply and then boost his voltage to what is required?
It makes perfect sense that a controller can sink and source and each will control the direction of current flow. Obviously makes no difference to the filament globe but a motor would turn in different directions.
What happens if the motors voltage exceeds the gate voltage supplied by the controller? No problem on the N channel mosfets because it Vgs that controls the gate. The P channel mosfets however work on Vgs which will always be open.
Do they normally work on a 5V supply and then boost his voltage to what is required?