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LMR38025-Q1: Please review the schematic

Chase Jeong
Mastermind 7915 points
Part Number: LMR38025-Q1


Tool/software:

Dear TI experts,

My customer drew 1st schematic using LMR38025-Q1. Could you review the schematic below?

Best regards,

Chase

  • 0
    TI__Genius 11420 points

    Hi Chase,

    What is the load current in your application?

    Is the input voltage fixed at 48V or is there a range of operating conditions?

    Regards,

    Niranjan

  • 0 in reply to Niranjan Nair
    TI__Genius 11420 points

    Hi Chase,

    The input filter will need damping or it will be unstable. I would recommend adding a high ESR electrolytic cap in parallel with the input caps (to the right of the inductor). 

    Also, the minimum recommended input cap is 4.7 uF ceramic. I would suggest changing either one or both of the 2.2 uF caps to 4.7 uF.

    Regards,

    Niranjan