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Frequent questions

  • [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…

  • [FAQ] TPS65381A-Q1: Is there a power estimator for the TPS65381A-Q1?

    Part Number: TPS65381A-Q1 Is there a power estimator for the TPS65381A-Q1?

  • [FAQ] TPS23880: How to update TPS23880 firmware and how to detect what firmware version I am currently running?

    Part Number: TPS23880 How to update TPS23880 firmware and how to detect what firmware version I am currently running?

  • [FAQ] UCC5310: App note describing about Miller clamp feature

    Part Number: UCC5310 Hi Team, Do you have any app note describing Miller clamp feature? I especially want to know following two points. 1. What is Miller clamp? 2. how does our Miller clamp function work? Regards, Takashi Onawa

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