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TPS7A24: "Output capacitor" and "Input capacitor" described in "6.3 Recommended Operating Conditions" of the TPS7A24 data sheet

user5499232
Prodigy 100 points
Part Number: TPS7A24

Are the "Output capacitor" and "Input capacitor" described in "6.3 Recommended Operating Conditions" of the TPS7A24 data sheet "nominal capacitor value"?
Or is it "effective capacitance"?

  • 0
    TI__Mastermind 29350 points

    Hello,

    The capacitance is the effective capacitance in the EC table.

    Thanks,

    Stephen

  • 0 in reply to Stephen Ziel
    Prodigy 100 points

    thank you for your answer.
    I have an additional question.

    If "MAX100uF" of "Output capacitor" of "6.3 Recommended Operating Conditions" is "effective capacitance",
    Is it inconsistent with "The effective output capacitance value is recommended to not exceed 50 μF." In "8.1.3 Input and Output Capacitor Requirements"?

    "50 μF" in "The effective output capacitance value is recommended to not exceed 50 μF." Is not the value that "MAX100uF" in "Output capacitor" in "6.3 Recommended Operating Conditions" is reduced by 50% due to derating. Is it?

  • 0 in reply to user5499232
    TI__Mastermind 29350 points

    Hello,

    The device is specified to remain stable when Cout = 1uF to 100uF.  I confirmed that this interpretation is correct, as validation of the device was completed with both 1uF and 100uF output capacitors.  I believe it is recommended to stay below 50uF due to derating, as you have mentioned.  We assume the effective capacitance = 50% * nominal capacitance.  So 50% * 100uF = 50uF.

    Thanks,

    Stephen

  • 0 in reply to Stephen Ziel
    Prodigy 100 points

    Thank you polite reply.

    Let me sort out the conclusions.

    In conclusion, is the following interpretation correct?

    ・ "Output capacitor = MIN: 1uF to MAX: 100uF" in "6.3 Recommended Operating Conditions" is "nominal capacitor value".

    ・Assuming "the effective capacitance = 50% * nominal capacitor value".

    Sorry for the same content as the previous question.
    Just in case, let me make sure that the interpretation is correct.

  • 0 in reply to user5499232
    TI__Mastermind 29350 points

    Yes this is correct.

    Thanks,

    Stephen