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  • LM25149-Q1EVM-2100: 3.3V output

    TI Thinks Resolved
    Part Number: LM25149-Q1EVM-2100 Hi, team When set output to 3.3V, Do I need to both connect FB to VDDA and VCCX to GND? Is VCCX to GND must have?

  • LM25149-Q1EVM-2100: At 6Vin, the 5V output is not regulated for output currents greater than 2.5A

    TI Thinks Resolved
    Part Number: LM25149-Q1EVM-2100 Other Parts Discussed in Thread: LM25149 , We want to design a 12V->5V circuits that is very efficient from 5mA to 4A. We also want the output to maintain regulation as the input drops down to 5.85V. I looked at the LM25149…
    • Answered

  • LM5143-Q1EVM-2100: EVM design question.

    Resolved
    Part Number: LM5143-Q1EVM-2100 Other Parts Discussed in Thread: LM5143-Q1 Tool/software: Hi Expert, Have a nice day! I have question need your professional support: About LM5143-Q1’s EVM, what is the function of R10, C30, R19 and R20? Thanks…
    • Resolved

  • LM25149-Q1EVM-2100: heavy load startup, see overshoot on current

    TI Thinks Resolved
    Part Number: LM25149-Q1EVM-2100 Hi, team when start up with heavy load(13A), see overshoot on Iout. Is it normal? and what can cause this overshoot? (such as test method?) test condition: Vin=12V Vout=3.3V Iload=13A
    • Answered

  • LM25149-Q1EVM-2100: Dual phase operation by using 2 EVMs

    Resolved
    Part Number: LM25149-Q1EVM-2100 Other Parts Discussed in Thread: LM25149-Q1 Hello Team, Our customer want to evaluate dual phase operation by using 2pcs of LM25149-Q1 EVM but somehow they can't work well. Can you please let me know the setup to perform…
    • Resolved
    • Answered

  • LM25149-Q1EVM-2100: Output voltage ripple in PFM mode

    Resolved
    Part Number: LM25149-Q1EVM-2100 Hi support team: when system output 3.3V/1A, I tested output ripple is 280mv(output capacitor is 188uF ) in PFM mode. I think this voltage ripple is too large, could you please tell me what is the ideal voltage ripple…
    • Resolved

  • LM5143-Q1EVM-2100: EVM Single output two phase sync buck (15V)

    TI Thinks Resolved
    Part Number: LM5143-Q1EVM-2100 Other Parts Discussed in Thread: LM5143 Tool/software: Using the LM5143-Q1EVM-2100 for the following tests: Dual outputs – FB1 connected to VDDA, FB2 connected to AGND, and MODE tied to AGND. VOUT1 and VOUT2 provided…

  • LM5143-Q1EVM-2100: LM5143-Q1EVM stress problem

    TI Thinks Resolved
    Part Number: LM5143-Q1EVM-2100 Other Parts Discussed in Thread: LM5143-Q1 , LM5143 Hi Team, My customer tested the LM5143-Q1 EVM and needs to confirm the following problem. The attachment is to measure the Vgs and Vds of Q1&Q3 when measuring 3…

  • LM5143-Q1EVM-2100: How to configure a single output with a 5V15A output from the default state.

    TI Thinks Resolved
    Part Number: LM5143-Q1EVM-2100 Other Parts Discussed in Thread: LM5143 I would like to know the detailed steps to take the board from its default state to a single output with a 5V15A configuration. Specifically: The positions of switches The…

  • LM5143-Q1EVM-2100: Abnormal EN voltage

    TI Thinks Resolved
    Part Number: LM5143-Q1EVM-2100 Other Parts Discussed in Thread: LM5143 Hello, Could you advise how EN1/2 is only 1.2V even when VIN is applied with 12V in LM5143EVM? I measure VIN and PGND, then see 12V. I measure EN1 and PGND, then see 1.2V. EVM…

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