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TPS53355: High load design

KIM Andy
Expert 2530 points
Part Number: TPS53355
Other Parts Discussed in Thread: TPS53667, TPS53647, LM3754, TPS40090-Q1, TPS40091, TPS40090, TPS546C23, PTH08T250W, PTV08T250W, PTV08040W, PTH12040W

My customer is currently using power with the TPS53355. The current output of the TPS53355 is 1V, 25A (input 12V).

We are looking for a larger load design than the current model. The desired current value is Continuous 50A.

Is there an IC that can be designed for this? Or can I implement it using two TPS53355s?

WEBENCH designed circuit with corresponding value. In this regard, the circuit is too complicated to use.

  • 0
    TI__Guru**** 191445 points
    Andy,

    For 50 A load current you will probably need a controller. There are 6 possibilities:

    TPS53667 - 6-Phase, D-CAP+ Step-Down Driverless Buck Controller with NVM and PMBus Interface for AVS www.ti.com/.../tps53667

    TPS53647 - 4-Phase, D-CAP+TM Step-Down Buck Controller with NVM and PMBus Interface for ASIC www.ti.com/.../tps53647

    LM3754 - Scalable 2-Phase Synchronous Buck Controllers with Integrated FET Drivers & Linear Reg Controller
    www.ti.com/.../lm3754

    TPS40090-Q1 - Automotive 4.5V to 15V Multiphase Synchronous Buck Controller www.ti.com/.../tps40090-q1

    TPS40091 - 4 Channel Multiphase Buck DC/DC Controller with Tri-state www.ti.com/.../tps40091

    TPS40090 - 4 Channel Multiphase Buck DC/DC Controller www.ti.com/.../tps40090

    Also we have stackable integrated FET solutions such as:

    TPS546C23 4.5-V to 18-V, 35-A Stackable Synchronous Buck Converters With PMBus www.ti.com/.../TPS546C23

    These will be somewhat complex designs. If you require something simple to use, you may want to consider a Power Module solution. We have 4 possibilities in this category:

    PTH08T250W - 50A, 4.5V to 14V Input, Non-Isolated, Wide Output, Adjustable Power Module with TurboTrans
    www.ti.com/.../pth08t250w

    PTV08T250W - 50-A, 8-V to 14-V Input, Non-Isolated, Wide Output Adjust, Vertical Power Module w/ TurboTrans
    www.ti.com/.../ptv08t250w

    PTV08040W - 50-A, 8-V to 14-V Input, Non-Isolated, Wide-Output Adjust, Vertical Power Module www.ti.com/.../ptv08040w

    PTH12040W - 50-A, 8 to 14-V Input, Wide-Output Adjust Power Module www.ti.com/.../pth12040w

    Let me know if one of these suggestions will work for you.