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TPS23753A: Power dissipation

Michael Jeong1
Expert 2630 points
Part Number: TPS23753A

Hi,

We want to know power data of TPS23753A.

Because our customer got a request Tj data on their B'd from their buyer.

So, we have to estimate Tj data from below equation.

Tj = Ta + (RθJA + Power)

We can't find power data on data sheet.

Could you please send it to me ASAP?

I'm looking forward to receiving it from you.

Best Regards,

Michael

  • 0
    TI__Mastermind 21320 points

    During normal operation, the approximate total power dissipated would be the TPS23753A power input (Vdd pin) + the supply for the gate drive (VC) + the power dissipated across the hotswap FET (Rdson).

    Ptotal = (Vdd*Idd) + (Ivc_op*Vvc) + (Rds(on)*Irtn^2)

    For Idd, Measure the input current when VVDD = 48 V, or 40 V ≤ VVDD ≤ 57 V


    See "VC (GATE DRIVE SUPPLY)" on pg. 5 for Vc-related values.


    See "RTN (PASS DEVICE)" on pg. 6 for hotswap related values.

    Input bias current VVDD = VRTN = 30 V, Measure IRTN

    If this post answers your question, please indicate so by marking this thread as resolved. Thank you.

     

    Regards, 

     

    Michael P.

    Applications Engineer

    Texas Instruments