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  • TPS23754: TPS23754 - Dead time

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    Part Number: TPS23754 Hi, My company designed a circuit using the TPS23754 chip, and we referenced TI's TPS23754EVM-383 circuit. During testing, when a high load (specifically 12W) was applied, the ZVS (Zero Voltage switch) was not satisfied. Therefore…
    • Resolved

  • TPS23754: PoE DC-DC design with TPS23754

    Part Number: TPS23754 Other Parts Discussed in Thread: , , PMP6812 Hello, We've designed a new board with the TPS23754 chip. Please see the attached schematic. The design is powered by PoE (via the Ethernet connectors and diode bridge, not shown in…

  • TPS23754: TPS23754: Layout and SCH review for POE section.

    Part Number: TPS23754 Hello TI Team, We have designed our PoE-based product using the TI TPS23754 chip and recently performed radiated emission testing in Rev A. The results indicate failures at the 250KHz frequency ranges. Now we are in Rev B, we need…
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  • TPS23754: PoE with TPS23754 - conducted switching noise

    Resolved
    Part Number: TPS23754 Other Parts Discussed in Thread: TPS23731 , TPS23755 Hello TI team, We are designing a PoE-supplied device with the TPS23754 controller. Design is based on this www.ti.com/.../PMP22301 Transformer is /cfs-file/__key/communityserver…
    • Resolved

  • TPS23754: CISPR 25 Radiated Emissions Observation – PoE Section (TPS23754)

    Part Number: TPS23754 Hi Team, We have completed pre-compliance testing on the PoE section of the design, which is based on the TPS23754PWPR controller. The converter operates at a switching frequency of 250 kHz, with the transformer secondary followed…

  • TPS23754: About the external protection circuit of TPS23754

    Part Number: TPS23754 Hi, Team our customer use TPS23754 in their project, and customer found that one of the application note from "Littlefuse" mention that, it recommentd add the external protection component(TVS, Fuse, Diode array etc) for POE++…
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  • TPS23754: Request schematic review of TPS23754

    Resolved
    Part Number: TPS23754 Tool/software: Hi, TI expert Customer has completed schematic design and PCB sample production with TPS23754. However, during the sample firmware download and verification process, there is a problem that the output is shut down…
    • Resolved

  • TPS23754: internal MOSFET of the TPS23754 turned on with external DC source

    Part Number: TPS23754 Hi Team My customer meet a very strange problem when using the TPS23754. When they connected an external 54V DC source, they found that the internal MOSFET of the TPS23754 turned on, and the flyback power supply started working…
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  • TPS23754: Inquiry regarding diode connection to GAT2 pin on TPS23754

    Resolved
    Part Number: TPS23754 Hi, TI expert Why is Diode connected to the Vgs terminal of GAT2pin and FET on Datasheet? The EVM Board's circuit is also applied as Diode (Location : D1). www.ti.com/.../slvu304c.pdf In general, the FET Switching circuit…
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  • TPS23754: External sync - followup E2E1638217

    Part Number: TPS23754 TI support USA said shorten the pulse width to 50ns which does in fact work. However I still would like an answer as to why lowering the voltage from 5V to 3.2V of our 250ns pulse makes it work as well. This would be our preferred…

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