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TPS53353: output maximum capacity

T Kishi
Genius 4425 points
Part Number: TPS53353

Hi

My Customer has question.

Does the TPS53353 have an output maximum allowable capacity value?
Customers will use ceramic, but in some cases they may implement tantalum or polymer capacitors
Also, please let me know if there are any notes etc. when increasing the capacity value.

Regard

T Kishi

  • 0
    TI__Guru**** 191445 points
    T Kishi,

    TPS53353 is an original DCAP control mode part. there is no internal ripple injection zero. You are relying on the output capacitor ESR for electrolytic types, or the external ripple injection for ceramic types for stability. There should not be a practical limit (within reason) for the amount of output capacitance allowed. Just follow the design guidelines in the datasheet for either ceramic or electrolytic designs. How much capacitance were you thinking about?