PMP20859: Dual-Input Redundant PoE PD With Smooth Transition

Terry Wu2

Part Number: PMP20859
Other Parts Discussed in Thread: TPS2373,

Hello Sirs,

Just need to double check this PMP20859 .(two tps2373 + single isolation flyback )

Is it no problem for two PSE input redundant power input , and system still working without power lose when either one PSE source disconnect ?

Many thanks !

over 5 years ago

0 David Strasser over 5 years ago

TI__Intellectual 2440 points

Yes, that is correct. There are two PSE inputs and one adapter input. As long as one of the three inputs remains connected the output power will not be interrupted.

The PSE inputs are redundant, but if the input voltages are almost the same there may be some sharing between the two PSE inputs.

Thanks,

David

0 Terry Wu2 over 5 years ago in reply to David Strasser

Expert 2110 points

Hello David,

Got it. Many thanks ~

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PMP20859: Dual-Input Redundant PoE PD With Smooth Transition