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TPS546E25: Design review

JH Shin
Guru 10920 points
Part Number: TPS546E25

Tool/software:

Hello,

Could you please review the design by the customer below and see if there are any issues?

6558.tps546e25.pdf

Thank you.

JH

  • 0
    TI__Genius 11235 points

    Hi JH,

    I will review and respond between this week and next week.

    Thank you,

    Calan

  • 0
    TI__Genius 11235 points

    Hi JH,

    I was able to review the schematic, please see my feedback below:

    • MSEL2 resistor R545 should be 5.9kohm, not 5.09kohm

    • Gain1 RAMP1 is good, but can also change to G1R2 which is 7.32kohm resistor for R545

    • Ensure CNTL is pulling up the device correctly

    • It is unclear what is the Iout from the schematic. I assumed 25A

    • Is it needed to have two inductors in parallel? this is uncommon. It is recommended to have a single inductor of about 75nH.

    • The Vsel resistor (R546) selects 0.9vout. For 0.85vout, place a 9.09kohm resistor here.

    • It is unclear what the Output Bulk capacitor is.

    • Please add one more 22uF input capacitor to further improve ripple

    All else looks good

    Best,

    Calan