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  • LM5158: Customize LM5158RTER ‑ 10V-60V to 12.00V @ 1A Design for isolation

    TI Thinks Resolved
    Part Number: LM5158 Tool/software: I want to design an isolated power circuit with a 10–60V input and 12V output. When I use Webench the attached design seems suitable, but here the input GND and the output GND are the same. I think this would break the…
    • Answered

  • LM5158: Insufficient Startup Voltage Range - LM5158QRTERQ1 Fails to Operate Below 4V Input

    Resolved
    Part Number: LM5158 Component: LM5158QRTERQ1 | Boost, Flyback, SEPIC Switching Regulator IC Positive Adjustable 1.5V 1 Output 3.26A (Switch) 16-WFQFN Exposed Pad Input Voltage Range: 3.3V to 48V (designed) Output Requirement: 5V regulated Observed Behavior…
    • Resolved
    • Answered

  • LM5158: Misleading soft start computation

    Resolved
    Part Number: LM5158 Tool/software: Hello, We are intending to use the LM5158 to generate a 45V regulated power supply from our 20V to 32V input power supply. The 45V is used to generate further secondary supplies and to cope with the potential…
    • Resolved

  • LM5158: Inrush current when start up

    Part Number: LM5158 Tool/software: Hi team, my customer used LM5158 and find that there is an inrush current within a few ms after EN is turned on (but the actual TSS setting is several hundred ms), and the Vout suddenly has a voltage of more than…
    • Answered

  • LM5158: Can't open BOOST calculator sheet

    Resolved
    Part Number: LM5158 Tool/software: Hello, I downloaded the boost computation file. It does not open in Microsoft excel, stating that it is due to the protection. Any hint ? I was able to open it in Sheets which overrides any protection but I think…
    • Resolved
    • Answered

  • LM5158: Discrepency bewteen Webbench and calculator

    Resolved
    Part Number: LM5158 Other Parts Discussed in Thread: LM5157 Tool/software: Hello I have the same issue, the compensation values that are output by Webbench and the calculated suggestion in the sheet differs. What am I missing ? webench.ti.com…
    • Resolved
    • Answered

  • LM5158: Flyback Converter - switching frequency

    Resolved
    Part Number: LM5158 Tool/software: Hello, I'm working on a 48V to 3x isolated 28V @ 0.2A flyback converter, using LM5158 and a Pulse VPH5-0155-R or Wurth 749196518 1:1:1:1:1:1 transformer with ~23µH primary inductance. Please could you advise on the…
    • Resolved
    • Answered

  • LM5158-Q1: Doubt about UVLO and other parameters

    Resolved
    Part Number: LM5158-Q1 Other Parts Discussed in Thread: LM5157 , LM5158 Tool/software: Dear, I have filled the LM5158-Q1 boost converter design tool spreadsheet (attached) for a boost with Vinput between 3.4 and 5.25V and Vout=44V. Could you please…
    • Resolved
    • Answered

  • LM5164-Q1: Odd current behavior with LM5158-Q1

    Resolved
    Part Number: LM5164-Q1 Other Parts Discussed in Thread: LM5158-Q1 , , LM5158 , LM5164 , LM65645-Q1 Tool/software: Hello, We are having an issue with the LM5164-Q1 and the LM5158-Q1. We are using a LM5158-Q1 to generate a 45V from our 28V power…
    • Resolved
    • Answered

  • LM5158: Can LM5158 be used as a power supply for PSE side of PoE?

    Resolved
    Part Number: LM5158 Hello guys, One of my customers is looking for a boost regulator which can be used as a power supply for PSE side of PoE. Their requirements are the follows. Vin=12V or 24V. Vout=37V~57V. Io=0.350A. Pout=13W. I think LM5158 can…
    • Resolved

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