I haven't thought of that too much yet. But I thought it was something to do with the free wheeling of the motor.
3 modes, Motor on, Motor Flywheel, and Motor Braking.
Is that the proper function of an Half Bridge?
My testing right now is with just a smaller motor that I don't even have a flywheel connected to test. So I've been using up to this point a single mosfet and a reverse voltage diode.
Then I drove one mosfet from my 555, and used the Drain connected through a 10 ohm 1o watt resistor with the gate of the next stage mosfet connected to the drain of the first. It worked but I didn't hook the scope up to that point since the 10 watt resistor got hot pretty fast with my 19V test supply.
This is when I came to the conclusion if I replace the high side resistor with a high side mosfet, It would provide a good source/sink to both ground and Vcc
with less waste dissipation.
This was before I did the math to find out a single driver might be able to run the parallel output stage without needed a pre-driver, hence my post asking if my math is close.
-TriX-