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TPS25942A 3 pieces of output directly, "Diode Mode" is the good?

Bob Lee62837
Mastermind 7230 points
Other Parts Discussed in Thread: TPS25942A

Dear support member,

My customer TPS25942A used.

If you want to connect a 3 pieces of output directly, "Diode Mode" is the good?
(Is that, set to "High" the DMODE of No. 1 pin?)

Data sheet 36page Fig74 is set to "OPEN" the DMODE of No. 1 pin.


When used for 3 pieces of output directly,
what is difference between Diode Mode or non Diode Mode?

Best regard.

Bob Lee.

  • 0
    TI__Intellectual 865 points

    Hi Bob,
    When DMODE pin is pulled high, the device gets configured in non-ideal diode mode. In this mode the power path from IN and OUT acts like a non-ideal diode.
    DMODE pin has an internal pull down. So when left open the power path is MOSFET and not a diode.

    The terminal is useful in Power-Mux applications to switch over from master to slave supplies and vice-versa smoothly, when two supplies are within a diode drop of each other.
    In your application, if the three supply voltages are within a diode drop of each other then you can use the DMODE pin to switch over from supply to other.
    Regards,
    Dilip

  • 0 in reply to Dilip Jain
    Mastermind 7230 points

    Dear Dilip Jain,

    Thank you very much for answer.


    Best regard.
    Bob Lee.