On 4/26/2012 7:11 AM, Mark Hanchey wrote:
> On 4/25/2012 11:34 PM, Harold Hallikainen wrote:
>> But, it seems like this should be a common problem with a low cost modul=
ar
>> solution. Linear and TI and others are making switching DC to DC convert=
er
>> modules, some of which are pretty inexpensive. It SEEMS like there shoul=
d
>> be such a module for POE. It'd have the two diode bridges, load switch, =
DC
>> to DC converter, and a DC output. But, I can't find anything like that
>> (well, I did find one for $35). Most of the POE stuff is emphasizing hig=
h
>> power (and cost).
> I think the problem you are having is looking for a pre-built module
> when most devices that will need POE have it implemented in the main
> board . The cost to build your own POE converter is really low, can
> easily do it for under $10.
> Put two bridges, a MAX5940 and a MAX5014 , a few resistors and you are
> done.\
>
> MarK

I did a quick search and these modules sell for under $8.
http://www.semiconductorstore.com/cart/pc/viewPrd.asp?idproduct=3D13982

Mark



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