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  • LM5071: Unstable Output Voltage in LM5071 PoE Converter

    Part Number: LM5071 Tool/software: Hi team, We are using the LM5071 PoE converter (5V/2.6A) with a Raspberry Pi. Without any load connected, the LM5071 restarts automatically, and the output voltage is unstable, fluctuating between 4.75V and 5V. I have…

  • LM5071: LM5071

    Part Number: LM5071 hi, We're using the LM5071 IC for our Power over Ethernet (PoE) application, adhering to the same application circuit diagram specified below ( DATASHEET ), customized for 5V and 2A. Despite this, we've encountered frequent IC failures…
    • Answered

  • LM5071: Can the LM5071 handle boosting?

    Resolved
    Part Number: LM5071 Other Parts Discussed in Thread: PMP22301 I'm adding dual ethernet to an existing product. POE is one of the design requirements. The system is typically powered by 24 VDC (wall wart or similar). Total system power is no more than…
    • Resolved
    • Answered

  • LM5071: Application clarification

    Resolved
    Part Number: LM5071 Other Parts Discussed in Thread: TPS23755 Hi Experts, We are looking at the LM5071 application circuit diagrams on the datasheet, specifically the non-isolated buck configuration https://www.ti.com/lit/ds/symlink/lm5071.pdf There…
    • Resolved
    • Answered

  • LM5071: LM5071 multiple output reference circuit, and (generally) adjusting 5V to 5.5V on POE-PD Flyback designs

    Resolved
    Part Number: LM5071 Other Parts Discussed in Thread: PMP11107 , TPS23753 , TPS23730 , TPS23753A , TPS23731 , TPS23734 , TPS23758 , TPS23758EVM-080 , TPS23731EVM-095 Hello, We are designing POE (as a PD) onto several circuit cards of a new machine…
    • Resolved

  • LM5071: LM5071 Eval Board unstable when changing to DA2383-ALD Transformer

    TI Thinks Resolved
    Part Number: LM5071 Hi there, I know that the LM5071 has already been active for quite a while and that the corresponding Evalboard is quite an old design. Nebertheless, I hope to get some help, as you might have experience with this issue. We…
    • Answered

  • LM5071: LM5071 - configure to non-isolated buck topology without Temp compensation

    Resolved
    Part Number: LM5071 Hi E2E, Our csutomer want to configure LM5071 to non-isolated topology, like Figure 18 in datasheet, but they want to remove Q2 + Temp comp. How to modify the circuit for the portion of feedback? does just put feedback resistor…
    • Resolved

  • LM5071: flyback transformer design for low power isolated PD

    TI Thinks Resolved
    Part Number: LM5071 Other Parts Discussed in Thread: TPS23755EVM-894 , TPS23754 Hello, We are using LM5071 & LM5072-80 for small power (less than 12V/0.8A) design. Due to the mechanical limitation, we have to use low profile transformer such as Coilcraft…
    • Answered

  • LM5071: AN 1430 reference design

    Resolved
    Part Number: LM5071 Hi We have an existing design based on LM5071 and the DA2257 transformer to give a 3V3 output, based on the AN1430 app note, fig 12. We now want to add a 5V5 rail by using Sec2 from T1 (pins 6 & 10). We built it, and it does…
    • Resolved

  • LM5071: Using in 3rd mode (min ripple) with transformer primary winding as inductor; not working at all

    TI Thinks Resolved
    Part Number: LM5071 We are using LM5071 part in 3rd mode (min ripple configuration) for the rating 6V,0.6A. We are using transformer primary winding as an inductor for the same. Below are some detials - VIn= 24V Vout= 6V, 0.6A Fsw= 580Khz (RON=115K…

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