TI E2E - TPS23754 in flyback mode for 1 Gig POE application

Posted by Arunkumar PB
on Nov 10 2012 02:00 AM

Hi,
We are planning to use TPS23754 in synchronous flyback mode for 1 Gig POE+ application.
In TPS23754EVM-420 ref schematic ,the ethernet interface is not for 1Gig but TPS23754EVM-383 for active clamp forward converter the ethernet interface is for 1Gig.
I want to know if we can use the TPS23754 in synchronous flyback mode for 1 Gig POE+ application.Are there any limitation for TPS23754 in synchronous flyback mode for 1 Gig application.
Please reply
Regards

Posted by Eric Wright
on Nov 12 2012 12:42 PM

Any POE, type 2 equipped ethernet transformer can be used with any TPS23754 based PD (and dc/dc converter topology). You can use the J3 jack from TPS23754EVM-383 with the PD on TPS23754EVM-420 for example. Other POE type 2 giga-bit transformer options are Wurth 749022011 or Pulse H6096NL.

Posted by Arunkumar PB
on Nov 14 2012 00:46 AM

Hi Eric,
Thanks for the reply .So you mean that we can use TPS23754 in fly back topology for 1Gig application only thing that need to be taken care is the TYpe 2 giga- bit transformer.

Posted by Eric Wright
on Nov 14 2012 08:16 AM

Yes, that is correct.

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출처: http://e2e.ti.com/support/power_management/power_interface/f/204/t/226086.aspx