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  • LM25149-Q1: LO output of controller behaves strangely when grounding bootstrap circuit

    TI Thinks Resolved
    Part Number: LM25149-Q1 Other Parts Discussed in Thread: LMG1205 , LM25149 , Tool/software: I want to simulate a design with LM25149-Q1 using PSpice for TI. I start of using the project provided with the spice model of LM25149-Q1. For my simulation I want…

  • LM25149-Q1: LM25149-Q1: Design Review Request

    TI Thinks Resolved
    Part Number: LM25149-Q1 Other Parts Discussed in Thread: LM25149 , LM25148 Tool/software: Hello Team We want to use LM25149-Q1 for Automotive controller power. We designed the circuit with information obtained using WEBENCH. We designed it to be able to…
    • Answered

  • LM25149-Q1: Integrated suggestion

    Resolved
    Part Number: LM25149-Q1 Other Parts Discussed in Thread: LM5177 Tool/software: Hi, My system requires an input voltage range of 7-18V and an output voltage range of 15-28V. I need to be able to set the output current to a fixed 3A. I should be able to…
    • Resolved
    • Answered

  • LM25149-Q1: Does LM25149 need an external EMI filter also with its in-built EMI filter?

    Resolved
    Part Number: LM25149-Q1 Other Parts Discussed in Thread: LM25149 Tool/software: LM25149 datasheet says external differential mode input filter size reduces by 50%. What it means... external EMI filter is needed?
    • Resolved

  • LM25149-Q1: Is there any way to enable active EMI filter in LM25149 even at light loads?

    Part Number: LM25149-Q1 Other Parts Discussed in Thread: LM25149 Tool/software: Datasheet says active EMI filter is disabled when load current is less than 30% of the current limit value. In my application i need a front-end converter to generate supply…

  • LM25149-Q1: Regarding the Operation and VCC voltage.

    Part Number: LM25149-Q1 Tool/software: For the design of buck converter from 24V to 5V, we just used LM25419. And we designed it for 8 Amps with 5mE sense resistor. But just after 0.5 Amps, the voltage starts dropping as a sawtooth wave even current too…

  • LM25149-Q1: CNFG pin mis sample

    TI Thinks Resolved
    Part Number: LM25149-Q1 Other Parts Discussed in Thread: LM25149 Tool/software: Hi team, I am planning to use LM25149-Q1 in dual phase and connect 71.5kohm on primary IC and 90.9kohm on secondary IC. As an automotive risk analysis, I am considering if…

  • LM25149-Q1: Current sense accuracy

    TI Thinks Resolved
    Part Number: LM25149-Q1 Tool/software: Hi Team, Looking at the LM25149-Q1 datasheet, the stated overcurrent Vcs-th threshold tolerance is 49mV min to 73mV max. In the Typical characteristics section Figure 7-18 shows the Current sense threshold vs temperature…

  • LM25149-Q1: How to disable the AEF?

    TI Thinks Resolved
    Part Number: LM25149-Q1 Tool/software: Hi, I want to disable the AEF, just to compare the EMI measurement results. I am trying to do it by connecting a jumper pin between CNFG and GND AFTER startup. But it does not seem to work. What am I missing? EDIT…

  • LM25149-Q1: simulation not enabled for this design

    TI Thinks Resolved
    Part Number: LM25149-Q1 Other Parts Discussed in Thread: LM25149 , LM25148 , , LM25148-Q1 Tool/software: Hi everyone, I am trying to simulated LM25149-Q using WEBbench tool but it is showing the "simulation not enabled for this design". So, please let me…

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