Ahhh... Initial calcs say 10 mOhms is more than low enough and can find=20
plenty of workable PFET options under that, so I think I should be fine.

Cheers,
-Neil.

On 12/16/2014 1:41 PM, Wouter van Ooijen wrote:
> Other things being equal, N-fets are better (lower RDSon) than P-Fets,
> but they are a PITA to use on the high side, because their gates must be
> ~10V *above* the uper rail to switch on properly. Hence for a simple,
> low-hassle, (relatively) low-current H-bridge an N/P design is preferred
> because it is simpler, while for a high-performance design all-N is
> preferred. Where the break even point lies is of course up to the designe=
r.
>
> Wouter van Ooijen

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