PWM Phase shifting for 5 channels?

Hey Stefan,

great Code! You helped me a lot with my porject :) 

I was wondering if it would be possibe to phase shift the PWM of 5 channels? Reason is that my PSU starts to coil whine and I tought it could be stopped if not all channels would be off or on at the same time. I didn't try to configure > 20khz jet.

Regards 
