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  • PMP20859: PMP20859: IEEE802.3 Isolation requirements. Should the two Ethernet ports be isolated from each other?

    Part Number: PMP20859 I am trying to design a PD that supports PoE on two different ports and I have been looking at PMP20859 for reference. I see that the two ports in this design each have a signal transformer for isolation, but they share a power…

  • PMP20859: Request detailed Dual-input redundant circuit indication of PMP20859

    TI Thinks Resolved
    Part Number: PMP20859 Other Parts Discussed in Thread: TPS2372 , LM5020 Tool/software: Hi Tier, I would like to understand the detailed Dual-input redundant circuit indication of PMP20859. This will help us promptly address any issues during subsequent…

  • PMP20859: TPS2372

    Part Number: PMP20859 Dear, WiFi 7 3Radio Wireless AP based on PMP20859 (TPS2372-3) POE application circuit diagram is attached in PDF, please Review POE.pdf
    • Answered

  • PMP20859: Seamless Failover

    Resolved
    Part Number: PMP20859 Other Parts Discussed in Thread: LM5020 , TPS3808 Hi TI, Is the reference design of PMP20859 able to output Vout with only Aux 48Vdc input and with disconnected PoE input? The reason asking this is because Vout would be 0V initially…
    • Resolved

  • PMP20859: Behavior Questions

    TI Thinks Resolved
    Part Number: PMP20859 Other Parts Discussed in Thread: LM5020 Hi expert, May I learn with you how does the circuit work to turn off POE2 to let it as standby mode when both POE1 and POE2 are connected? Thanks, Allan
    • Answered

  • PMP20859: Disabling TPS2372 PoE controller completely.

    Resolved
    Part Number: PMP20859 Other Parts Discussed in Thread: TPS2372 We have successfully implemented a dual PoE & external 48V input based on the PMP20859 reference circuit, which works fine. External 48V in only, works. PoE swapping over works no glitches…
    • Resolved

  • PMP20859: could TPS2378 achieve the Dual-Input Redundant PoE PD like that in PMP20859

    TI Thinks Resolved
    Part Number: PMP20859 Other Parts Discussed in Thread: TPS2378 , TPS2373 , TPS2372 Hi expert, Could TPS2378 achieve the Dual-Input Redundant PoE PD like that in PMP20859? Thanks.

  • PMP20859: PMP20885, PMP20940 support need

    TI Thinks Resolved
    Part Number: PMP20859 Hi team, I found that we have PMP20885, PMP20940 those two reference designs, could you please s h are the PMP20885, PMP20940 design documents to customer for reference? Looking forward to your reply.
    • Answered

  • PMP20859: What are the MOSFETs for in the input bridge rectifiers ?

    Resolved
    Part Number: PMP20859 Other Parts Discussed in Thread: CSD19538Q3A What is the purpose of the MOSFET's in the POE input bridge rectifiers (eg Q1, Q2, Q3, Q4 - CSD19538Q3A) of the PMP20859 ?
    • Resolved
    • Answered

  • PMP20859: If I don't require external 48V input, do I just delete the ringed components below ?

    Resolved
    Part Number: PMP20859 I require a dual PoE input design, but no external 48V input, so do I just delete the components ringed below. Looks like I won't need the 48V input connector, 48V sense control and 2 off circuits to pull (PoE) PG low if external…
    • Resolved

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