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TPS25940-Q1: surrounding component value

Expert 2550 points

Part Number: TPS25940-Q1

Could you please advise surrounding component value.

CIN,R2,R3,CdVdT,R6,R7,RILIM,RIMON,Cout

They conider to use TPS25940-Q1 at below condition.

Vin,Vout typ6.5V

V(OVP):8V

ILIMT:1.0A

They will use PGOOD as over current FLAG(1A).

When they detect over current FLAG,they will shutdown this part using with EN.

Please see attached.

TPS25940-Q1_20170616.pdf

Regards,

4 Replies

  • Hi Kura,

    What is the application use case here?
    Please make use of design calculator available at www.ti.com/.../toolssoftware

    Here are the values.
    Cin= 0.1uF
    R2 = 700k
    R3= 100k
    cdVdT : what is the Cout and load at startup?
    R6 = R7 = 10kohm
    Rilim = 89kohm
    Rimon = 19.2 kohm

    Regards
    Rakesh
  • Expert 2550 points

    In reply to Rakesh:

    Rakesh-san

    Thank you your sending TPS2594x Design Calculation Tool to us.

    Please let us know about this tool

    If they don't use UVLO function,what value they hould enter to UVset cell.

    regards,

  • In reply to kura:

    Hi Kura-san,

    You can set any value greater than 0.92V (given in UVref, cell 103) for UVset. Now the device will operate till 2.7V Vin

    Regards
    Rakesh
  • In reply to Rakesh:

    Hi Kura-san,

    Please use 2.7V for UVset cell as it is the recommended minimum input operating voltage for the device.

    Regards
    Rakesh

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