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  • LM5123-Q1: Short to Battery Condition

    TI Thinks Resolved
    Part Number: LM5123-Q1 Hi team, Can you comment what will happen to the LM5123-Q1 if the output (Vload) has a short to battery condition. Battery is in a 6V-16V range and we are designing for a 24V Vout boost so I'm thinking we will just current limit…
    • Answered

  • LM5123-Q1: output voltage deviation

    Resolved
    Part Number: LM5123-Q1 Hi Team, The customer is using LM5123-Q1 with TRK pin voltage is set to 0.75V. How much this typical output voltage will vary due to the tolerance of this boost controller? and how can I calculate this? Thanks in advance. Regards, …
    • Resolved
    • Answered

  • LM5123-Q1: Internal gate driver resistance

    Resolved
    Part Number: LM5123-Q1 Hi, For doing the WCCA of a Tracking power supply which uses LM51231, I wanted to know the LO and HO internal gate drive resistances (both source and sink). This is to get the total gate resistance to the external MOSFET and to calculate…
    • Resolved

  • RE: LM51231-Q1: lm5123 not switching.

    Hi Emanuele, I have not seen an update for the last x days, so I assume the questions are/or answered and the issue is solved. I close this thread now. If there is still something open reply and the thread will get open again. If you have any other question…
    • Answered

  • LM5123-Q1: Output voltage setpoint using TRK

    Resolved
    Part Number: LM5123-Q1 Hi, For doing the worst case circuit analysis, I wanted to know the output voltage setpoint corresponding to TRK pin voltage and the Vout deviation. I found from datasheet that the Vout will be 60*Vtrk and by this way I could find…
    • Resolved

  • LM5123-Q1: EVM or Design Guide TIDA-020033 (TIDUA71) Schematic & PCB Design Files

    TI Thinks Resolved
    Part Number: LM5123-Q1 Other Parts Discussed in Thread: TIDA-020033 , LM5123EVM-BST Hi Team, would it be possible to get the Schematic & PCB Layout Files (preferred Altium) for the LM5123EVM-BST and / or for the Design Guide TIDA-020033 (TIDUA71)? …

  • LM5123-Q1: Is it safe to back-feed with voltage from output when shut down?

    TI Thinks Resolved
    Part Number: LM5123-Q1 We are designing a system where we have one of the following power input scenarios: - 12V available (which will be boosted to 24V by this circuit) - 24V available (which will directly power the 24V circuitry, hopefully not damaging…
    • Answered

  • LM5123-Q1: Output Voltage and Current Spike with Soft-Start enabled - PSpice for TI

    Resolved
    Part Number: LM5123-Q1 Hello, I utilized the LM5123 boost controller design tool to get preliminary component values. I am simulating the circuit using PSpice for TI and on the output of the regulator I am getting a voltage spike > 200% of my desired…
    • Resolved
    • Answered

  • LM5123-Q1-DESIGNCALC: Different values of components using calculator and webench

    Resolved
    Part Number: LM5123-Q1-DESIGNCALC Hi, I ran into discrepancy between design calculator in Excel and Webench concerning values for COMP pin for LM5123 IC. When I enter same input values in both cases, I get pretty much different values of resistor and…
    • Resolved

  • LM5123-Q1: Strange behavior of low-side-FET gate

    Part Number: LM5123-Q1 Hi! The following observations have been made with a pre-production-sample of the LM5123 (XLM5123). If this is a known issue and it is fixed with the production version, please let me know. While measuring our design, we found an…

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