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TPS54020: schematic review

Kai Hsiao
Guru 12675 points
Part Number: TPS54020
Other Parts Discussed in Thread: TPS82085

Hi Sir 

Attached file is TPS54020 / TPS82085 

Please kindly help to review the schematic Power-1.pdf

  • 0
    TI__Mastermind 35165 points

    Hi Kai,

    I have taken a look at the TPS54020 have only 1 comment. The L, Cout and compensation look to be directly copied from the apps section and are the same for both applications. Were calculations done to ensure these values will work? I would expect these components to vary with different output voltage.

    The L should be calculated to set the ripple current and in order to get the same ripple current with different output voltages, the L value will change. The Cout should be sized to support any load step requirements. The compensation will vary with Cout and output voltage.

    WEBENCH or the datasheet equations can be used to help calculate recommended values. If using the equations in the datasheet for the compensation values, make sure to use the gmps based on the ILIM connection used. Let me know if you have any questions on using either of these.

    Best Regards,
    Anthony