Jon Wilder
Active Member
Stupid design??? Hardly! Saves you the cost and PCB real estate of an external driver chip! If you can spare the pins then why not!?
If you only have a PIC with a single PWM output then sure...use a driver chip. But Microchip put the Enhanced PWM module on the PIC for a reason...and that reason is to provide 4 line H-Bridge control without the need for an external driver chip. If that design were so "stupid", I don't think the engineers at Microchip would've wasted their time with it. If your PIC has it then take advantage of it.
If you only have a PIC with a single PWM output then sure...use a driver chip. But Microchip put the Enhanced PWM module on the PIC for a reason...and that reason is to provide 4 line H-Bridge control without the need for an external driver chip. If that design were so "stupid", I don't think the engineers at Microchip would've wasted their time with it. If your PIC has it then take advantage of it.