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  • LM25149-Q1: FB pin of secondary LM25149

    Resolved
    Part Number: LM25149-Q1 Other Parts Discussed in Thread: LM25149 , Hi team, I plan to use LM25149 in dual phase operation and control the PFM and FPWM from external MCU GPIO. Is it possible to pull up secondary LM25149-Q1 to VDDA of the primary LM25149…
    • Resolved

  • LM25149-Q1: Why does PGOOD is tied to VCC on the LM25149 reference design?

    TI Thinks Resolved
    Part Number: LM25149-Q1 https://www.ti.com/lit/ug/snvu773a/snvu773a.pdf?ts=1701157984911&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FLM25149-Q1 page 16
    • Answered

  • LM25149-Q1: LM25149-Q1 in Tina_TI

    Resolved
    Part Number: LM25149-Q1 Other Parts Discussed in Thread: LM25148 , LM5141 , LM5116 , LM5146 , LM5145 Hello, There is a PSpice transient model on the website for LM25149-Q1 , but unfortunately, it is encrypted, so I can't import it into Tina. How can I…
    • Resolved

  • LM25149-Q1: VDDA start up delay

    TI Thinks Resolved
    Part Number: LM25149-Q1 Hi team, How long is the EN to VDDA start up delay? I measured it and it varies 0.1ms to 2ms. Is it the expected value? regards,
    • Answered

  • LM25149-Q1: Will AEF work if previous circuits have output capacitors?

    Resolved
    Part Number: LM25149-Q1 Other Parts Discussed in Thread: LM25149 , LM25148 We're hoping to use the LM25149-Q1 in our infotainment platform to provide a pre-regulated 5V supply to feed our other regulators. The feed to the LM25149-Q1 would be via an…
    • Resolved

  • LM25149-Q1: About parameter calculations and application design

    TI Thinks Resolved
    Part Number: LM25149-Q1 Hi teams， I hope you’re doing well! Can you help explain how the following parameters are calculated? For example, how do we get Fc=60KHz and Cout=100uF in the calculation formula of Rcomp? Is Cbw=31pF a fixed value? If…

  • LM25149-Q1: VDDA UVLO at PFM

    TI Thinks Resolved
    Part Number: LM25149-Q1 Hi team, VDDA supply is regulated to 3.3V when in PFM mode with light load or no load on the output as below in the datasheet. . An internal 5-V linear regulator generates the VDDA bias supply. Bypass VDDA with a 100-nF ceramic…

  • LM25149-Q1: Is this part support for 40A load? My input is 24VDC and Output is 12V/40A is this the right part to use.

    TI Thinks Resolved
    Part Number: LM25149-Q1 Other Parts Discussed in Thread: LM25149 , LM5149-Q1EVM-400 , PMP20804 LM25149-Q1 Is this part support for 40A load? My input is 24VDC and Output is 12V/40A is this the right part to use. if not suitable then suggest the part which…

  • LM25149-Q1: Can AEF work well if relative components is far away from converter?

    TI Thinks Resolved
    Part Number: LM25149-Q1 Other Parts Discussed in Thread: LM25149 Hi team, I have promoted our LM25149-Q1 to automotive customer used in digital cockpit. Besides LM25149(supply for main soc, 3.3V/20A), they still have many other WVB converter for primary…
    • Answered

  • LM25149-Q1: VDDA current capacity

    Resolved
    Part Number: LM25149-Q1 Hi team, I would like to control PFM/FPWM mode depends on the system operation mode. I pull up PFM/SYNC pin to VDDA through 22kohm register for PFM operation, and pull down to GND through transistor. I concern pull VDDA to GND…
    • Resolved

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