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Frequent questions

  • [FAQ] TPS2373: What is the functionality of the TPH, TPL, and /BT pins for TIs IEEE802.3bt-ready PoE PDs?

    Part Number: TPS2373 What is the functionality of the TPH, TPL, and /BT pins for TIs IEEE802.3bt-ready PoE PDs?

  • [FAQ] PoE: Understanding Power Demotion

    Part Number: TPS2372 Hello, I'm understand the concept of demotion but I don't understand the Table 3 on the datasheet for TPS2372. On page 16 we can see Table 3. It states that a PSE type 3-4 can just allocate 12.95w on a type 4-8 PD. If a Type…

  • [FAQ] TPS65916: Blank part and whether we can program OTP in our lab

    Part Number: TPS65916 Other Parts Discussed in Thread: TPS650861 , TPS65218D0 We want to use TPS65916 part with one of our proprietary processor and wanted to know whether the TPS65916 part is available without pre-programmed OTP? Our required start…

  • [FAQ] TPS23754: Should APD be tied to Vss for PoE input ORing?

    Part Number: TPS23754 Hi, In our POE PD design we must tie 'APD' to 'Vss' so that DC adaptor input can be in parallel with full-bridge output. Is there any concern? The output of POE PD is fixed to 12V and the input range of adaptor is 18V ~ 48V…

  • [FAQ] TPS23861 PoE PSE Controller: PSE to PSE Connection Concerns

    Part Number: TPS23861 Hello if customer use TPS23861 that PSE connect to another PSE via cable. Has any damage risk for it? Has any protection integrated on TPS23861? Thank you. BR Patrick

  • [FAQ] TPS23754: Is 24V PoE input supported?

    Part Number: TPS23754 Hi Team, 1. Can TPS23754 support "passive POE input" down to 24V? 2.also recommend any transformer for 24Vin. Condition: 25W/24Vin-57Vin thanks a lot!

  • [FAQ] TPS65381A-Q1: Is there a Hercules / TMS570 software library for the TPS65381A-Q1?

    Part Number: TPS65381A-Q1 Is there a Hercules / TMS570 software library for the TPS65381A-Q1?

  • [FAQ] TPS659037: package and pin assign information

    Part Number: TPS659037 Hello E2E, Our customer is designing next new product for using the TPS6590376. I suggested to customer for change the PMIC from TPS6590376 to TPS6590378. However, I did not to finde the explain document for difference point…

  • [FAQ] PoE PD Controllers: What is the purpose of the isolation capacitor (Cio) between RTN and isolated output ground?

    Part Number: TPS23751 Other Parts Discussed in Thread: TPS23755EVM-894 What is the purpose of Cio in figure 32 of the TPS23751 datasheet? I have a noise problem at a specific frequency and it appears to be related to my layout of the POE circuit.…

  • [FAQ]How to design PSE port polarity to be IEEE802.3bt compliant

    Part Number: TPS23880 Hi! I'm testing this new EVM with several different PDs on it's 2-pair and 4-pair outputs. Single signature on 4-pair works and turns on signal and spare pairs. However dual-signature on 4-pair only spare pair turns on, and…

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