> Consequently, the biggest dissipation at 50% duty cycle will be the 
> body diodes during the "off" part of the cycle. 

I plan to add four 1N5819's. Would that help?

> On another topic, if you use P-channel MOSFETs and run at 24 volts, 
> insure your drive voltage is lower than the maximum gate voltage - 
> you can find MOSFETs with 24 volt gates, but they are not typical. 
> You can add extra parts to clamp the gates, of course.

:)

I noticed the max gate voltage for my FETs is 20 Volt. I 'switched' to
PWM'ing the N FET. I'll use a R-R divider for the P FETs, and an R-Z for
the N FETs. Driver will be a lowly 2003.

Wouter van Ooijen

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Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu
 

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