If you're looking just for the power controller, then the simplest
implementation might be a few zeners and a few SCRs.

The switching power supply with 1500v isolation is the part that gets
more complex.

-Adam

On 6/10/06, Charles Craft <chucksea@mindspring.com> wrote:
> http://focus.ti.com/lit/ds/symlink/tps2377.pdf
>
> IEEE 802.3af PoE POWERED DEVICE CONTROLLERS
>
>
> The circuit in the TI app note above is about the simplest I've found.
>
> Anyone done POE? (I think Olin was working on a project with it last year?)
> Suggestions on which power controller to use?
>
> thanks
> chuckc
>
>
>
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