> A proven option would be a PIC-controlled SMPS. The PIC16F616 has an
> enhanced PWM module which would work nicely for a buck-boost. It has
> hardware-triggered PWM output shutdown and restart as well. It's a
> pretty inexpensive part.
>

Do you have any documents/design guidelines/example projects for this?
I've seen the Microchip App Note for the SMPS buck regulator, but I'd
like to see some more information about how to apply control theory
principles to generate a particular output voltage.
Thanks,
- Marcel
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist