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TPS628501: Review of LMR604305SRAKRQ1_TPS628502QDRLRQ1_TPS628501QDRLRQ1

Vinyas Shetty
Prodigy 30 points
Part Number: TPS628501

Tool/software:

Texas_Instruments_LMR604305SRAKRQ1_TPS628502QDRLRQ1_.pptx

Hi Experts,

Wanted your review for the above circuits.

Attaching the circuits and layout for the same.

Please review and let us know any improvements

  • 0
    TI__Mastermind 20540 points

    Hello Vinyas,

    I will review it by tomorrow.

    Thanks,

    Farheen

  • 0 in reply to Farheen
    TI__Mastermind 20540 points

    Hello Vinyas,

    For U63002:

    I have same comment as U63001.

    Schematic Review:

    • MODE/SYNC either should be connected to EN for high level or to GND for low level.
    • Feedforward cap looks big 470pF. It is out of recommended limit. Has the customer tested control loop stability?

    Layout review:

    • FB pin is very sensitive node. It is recommended to keep it short. In the layout, it is very long. I will recommend  to move the feedback divider closer. 
    • Please also connect the bottom resistor of feedback network with IC GND to avoid any GND bouncing issue.
    • Also it is recommended to keep the snubber on the same layer as inductor.

    Thanks,

    Farheen