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TLVM13640: Any maximum effective capacitance limits?

Zak Blomerus
Prodigy 25 points
Part Number: TLVM13640
Other Parts Discussed in Thread: TPSM82810, TPSM82864A,

Good day,

I see that Buck converters like the TPSM82810 is rated for a Maximum Effective Output Capacitance of 470uF and the TPSM82864A datasheet states that Effective Output Capacitance "Values over 150 µF can degrade the loop stability of the converter."

Does the TLVM13640 have any restrictions in terms of the maximum effective capacitive loads that it can drive? I do not see any related information like this in the datasheet.

Thanks.

  • +1
    TI__Expert 3766 points

    Hi Zak,

    Your intuition is correct where modules do generally have a maximum effective output capacitance load to drive due to a set internal compensation. From the TLVM13640 datasheet section 9.2.1.1. there is a statement indicating so shown below. In order to verify completely I would recommend using the TLVM13640 Webench model with your designed output capacitance to gauge the stability of the model.

    Regards,

    Henry