h-bridge pwm
Hi,
Welcome to the forum, sure you will find it a source of good info.
Although CNC is covered to some degree in these pages I would suggest you also visit the CNCZONE - it is one of the best sites for CNC - I know people who have successfully built complete 3 axis cnc machines from the plans shown on that site.
Regarding your actual question about that chip - its not one I have used, but your point about PWM to its inputs - well there are two distinct types of H bridge drivers.
One is where the main micro provides all the control pulses including a PWM signal to a driver chip, that is mainly output transistor stages.
The other method is to use a driver chip with powerful logic built in, this generates all its own pwm signals etc, the main micro just sends simple start/stop type control signals.
Three very popular chips that demonstrate my point are the L293, L297 and L298.
hth