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Frequent questions

  • [FAQ] TITLE – BQ24040 and BQ2404X family Vin to Vout vs Charge Current Regulation.

    Other Parts Discussed in Thread: BQ24090 , BQ21040 , BQ24050 When the battery voltage is low, between 3V and 3.6V the charge current is normal, 800mA. But as battery voltage increase the charge current begins to drop from 800mA to 460mA, battery is…

  • [FAQ] UCC27282: Gate driver IC prevents damage from negative voltage spikes due to stray layout inductance and protects against cross conduction with built-in interlock in 100V half-bridge applications

    Part Number: UCC27282 Advanced power supply designers often face challenges when designing robust, high density, and high efficiency power supplies. To achieve these, they often ask for gate driver ICs that are as small as possible, but at the same…

  • [FAQ] TPS659037: TPS6590376ZWSR vs TPS6590378ZWSR

    Part Number: TPS659037 Other Parts Discussed in Thread: AM5728 Customer is referring to AM5728 EVM schematic & using TPS6590376ZWSR. TPS6590378ZWSR is available & I see three differences between both devices from user guide: 1. GPIO_2 was added to…

  • [FAQ] What type of bridge do I need for my PoE PD application?

    What type of bridge do I need for my PoE PD application?

  • [FAQ] TPS23755: What is the benefit of Primary Side Regulation (PSR)?

    Part Number: TPS23755 What is the benefit of Primary Side Regulation (PSR)?

  • [FAQ] Why is high efficiency important in PoE applications?

    Why is high efficiency important in PoE applications?

  • [FAQ] TPS23754: Can I use 24V PoE in my PD application?

    Part Number: TPS23754 Can I use 24V PoE in my PD application?

  • [FAQ] TPS23751: Can APD pin left floating on my PoE PD controller?

    Part Number: TPS23751 Hi Darwin, For all of TI's PoE PDs, even if there is an internal pull down on APD, it is recommended and good practice to terminate this pin to RTN or ARTN if APD is not used. This is also described in the PoE PD's datasheet.

  • [FAQ] TPS2372: What kind of MPS (maintain power signature) feature does my PoE PD application need?

    Part Number: TPS2372 Other Parts Discussed in Thread: TPS2373 , , TPS23752 Hi Darwin, In general, a PD can meet MPS by supplying at least 0.5W to the PSE (usually meets the MPS spec by the load going into normal operation). We have one family of…

  • [FAQ] TPS2372: What is the TPH, TPL, BT code when connected to an AT PSE, AF PSE or BT PSE, or a POE++ PSE, or an Adapter?

    Part Number: TPS2372 The table below shows the TPH-TPL-BT state when connected to an AT PSE (Type 1 or Type 2) or AF PSE (Type 1) , BT PSE (Type 3 or 4), non-standard POE++ PSE, or adapter (when APD goes high). PSE Type Power Sourced from…

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