PoE Power combining

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Reply to "PoE Power combining"

mark
on 12/03/2008 at 07:17 AM

Category(s):	power.national.com
Subject:	PoE Power combining
Message:
I have a system that takes around 25W of power and needs to be powered By POE which can only supply around 12W. My initial thoughts were to use two seperate LM5072's and parallel the outputs with a current sharing circuit to balance the two. Due to Price and size constraints this is no longer possible and was wondering if I could use 2 LM5073's Diode ored to the input of a single DC-DC converter.

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PoE Power combining (mark)
. . POE Power (suunto)
. . POE LM5072 can deliver 25W of output power (david.baba)
. . . . A Single LM5072 can power 25W of output power (david.baba)
. . POE power combining (scott.hung)

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