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Original question:

TPS2373: Creating a POE-powered passthrough device

TPS23755: creating a POE-powered pass through gateway

cao simon
Prodigy 10 points
Part Number: TPS23755

Tool/software:

 We want to design a gateway which need to support 2x  RJ45 LAN port  

LAN1 plans to be as PoE port, when the data is daisy chained from LAN2 toLAN1, it would be very nice the data (Switch function LAN1 and LAN2), but also the PoE is Passthrough by LAN2, so that with the daisy chained (Loop thout/PassThough) ,2nd gateway  is also powered via 1st gateway's LAN2.

Could you provide suitable solution for this requirement?

Thank you !

  • 0
    TI__Mastermind 37071 points

    Hi simon,

    Thanks for reaching out!

    I am wondering if below structure works for your case. It is for 25W (class-4) power case. 

    Could you let me know what is the power needed for the 1st RJ45, and what is the power needed for the 2nd RJ45.

    Best regards,

    Diang