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TLV62084EVM-828: Input cap

David Kim2
Genius 3385 points
Part Number: TLV62084EVM-828
Other Parts Discussed in Thread: TLV62084

Tool/software:

Hi

I'm designing using TLV62084.
If you look at the datasheet and WEBENCH, use the input cap to guide 10uF.
But EVM has 47uF+10uF, which one should I do?
Please also let me know the appropriate value of the output cap.

-SPEC-

Input: 3.3V

Output: 0.5V 2A

Thanks

  • 0
    TI__Mastermind 24220 points

    Hello David,

    thanks for reaching out in E2E.

    Usually there is no upper limit on the input cap from TLV62084 perspective. For most applications 10 μF is sufficient though a larger value reduces input current ripple.

    The 47 μF Tantalum Polymer cap was placed on the EVM because of its higher ESR compared to MLCCs, which is damping VIN resonance due to the parasitic inductance of long supply cables in a typical lab setup. This is usually not required in a normal application.

    Best regards,

    Andreas.