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TPS2034 - CURRENT LIMIT

Dice-K
Mastermind 6640 points
Other Parts Discussed in Thread: TPS2034, TPS2000C

Hello,
I have a questions about TPS2034.

SLVS190C describes that CURRENT LIMIT threshold is from 2.2A to 3.8A.
But CURRENT LIMIT acts from 4.4A.

Is this reason the delay of the detection?

If the load rises slowly, does CURRENT LIMIT act from near threshold value?

Regards,
Daisuke

  • 0
    TI__Mastermind 42795 points

    The current limit response in this old series of power switches is not optimal. I would suggest looking at the "C" family of power switch. The TPS2000C is a 2A rated part with much better current limit response.

  • 0 in reply to Eric Wright
    Mastermind 6640 points

    Hello Eric,
    Thank you for your reply.

    About TPS2034.

    I gradually put up an electric current to 2A~3.8A for approximately one minute, but CURRENT-LIMIT does not work.
    CURRENT-LIMIT works afterward when I put up an electric current to 4.35A.

    Is it not a delay of the detection?

    Please teach me the reason not to detect to 4.35A.
    Is the reason the Ioc?
    Is Ioc 4.35A?

    TPS2000C SLVSAU6G Figure 42.

    I attach a wave form. (The load rises quickly.)

    TPS2034_current-limit.xls

    Might a thermal protection work?

    Best regards,
    Daisuke