Hi All,

Just a quick update on my project.
As stated in my initial post, I am working towards a program to run a 1500W 180Vdc treadmill motor with bi-directional control using high voltage MOSFET's in H-bridge configuration. I am pleased to advise that I have successfully coded my '2431 to give forward, reverse and stop functions to the H-bridge via three momentary action switches using INTx interrupts (Darrels DT_INTS-18 rountines). PWM frequency is set to just under 8kHz and the duty cycle is varied by reading a pot setting via A/D. I can adjust dead time control as required - currently set at 1uS.

As for the hardware, I have made the power board PCB but it still needs to be drilled, populated and tested. For the time being, I will continue my PIC development using the breadboard. Interface to the powerboard should be pretty straight forward.

Lots more to do but I am progressing well and learning heaps

I will post some pictures, scope captures and code snippets once I get the hardware up and running.

Cheers
Barry
VK2XBP