Frequent Questions

  • [FAQ] How to optimize layout of the PoE PD system?

    How to optimize layout of the PoE PD system?

  • [FAQ] What is the use of T2P in PoE applications?

    What is the use of T2P in PoE applications?

  • [FAQ] I want to add an adapter to my PoE PD design. What are the different adapter ORing options I can implement? What are considerations for each option?

    I want to add an adapter to my PoE PD design. What are the different adapter ORing options I can implement? What are considerations for each option?

  • [FAQ] Why does my PoE PD EVM continuously power cycle after connecting to an IEEE802.3at compliant PSE?

    Why does my PoE PD EVM continuously power cycle after connecting to an IEEE802.3at compliant PSE?

  • [FAQ] Why is soft-start so important with PoE devices?

    Why is soft-start so important with PoE devices?

  • [FAQ] How is the PoE handshake done between PSE and PD (detection, classification and inrush)?

    How is the PoE handshake done between PSE and PD (detection, classification and inrush)?

  • [FAQ] What are the anticipated changes between the IEEE802.3at and IEEE802.3bt PoE standards?

    What are the anticipated changes between the IEEE802.3at and IEEE802.3bt PoE standards?

  • [FAQ] How does the data signal and power operate in the same Ethernet cable?

    How does the data signal and power operate in the same Ethernet cable?

  • [FAQ] BQ76930: or bq76940: Zero volts reported after boot

    Part Number: BQ76930 Other Parts Discussed in Thread: BQ76940 , Why do some cell voltages read 0 after boot with the bq76930 or bq76940?

  • [FAQ] How to calculate Junction Temperature for PoE PD + PWM Controller

    Part Number: TPS23751 Hi Sir May we know how to calculation TPS23751 power dissipation? As i know, the Tj = Pd * Rjc+ Tc, am i right? Bogey

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