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TPS25940 / Equation 4 for I(LIM) calculation

S.Satoshi
Guru 21675 points
Other Parts Discussed in Thread: TPS25940

Hi Everyone,

The datasheet has equation 4 for I(LIM) calculation. It uses 89 in numerator but I think it should be 87 because V(ILIM) is 0.87V in electrical characteristics. Please check it and consider to revise it if it is typo.

Best Regards,

Sonoki / Japan Disty

  • 0
    TI__Genius 12380 points
    Hi Sonoki,

    I am moving this thread to the appropriate forum (which is now Load Switches for all eFuse devices).

    Thanks,
    Alex
  • 0
    TI__Intellectual 2980 points

    Hello Sonoki- san,

    Thank you so much for supporting TPS25940. 

    What is the current limit and acceptable variation allowed  from customer?

    The bottom line for the current limit setting is as follow-

    For the current limit within the range from  0.58A to 5.2A , current is set by  89/RLIM. And this set limit can very within +/- 8%.

    So for example if you set the current limit to 4A, with the RLIM value of( 89/4=22.25k),

    You will see you current be limit within 3.68A to 4.32A which is +/-8% of 4A.

     

    Best Regards

    Dinesh