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TPS23754: how much is the max power consumption?

Aki Li
Expert 8225 points
Part Number: TPS23754

Customer wants to evaluate the thermal performance, but the datasheet doesn't show the power consumption data? Could you help check it? How can we calculate the possible max power loss? Thank you.

  • 0
    TI__Mastermind 21320 points

    Hello Aki,

    Thank you very much for your question. So the power consumption would be correlated to the VC times the current on that pin. In the datasheet, the listed current max is 5.5mA during startup. The max VC voltage is listed at 19V, so the power dissapation is 104.5mW during that startup inrush. However, it will depend on what the design has on VC and what the nominal operational values are.

    Additionally, the power dissipated on the internal pass FET needs to be included. This can be calculated with the Rdson of the FET times the input current squared. 

    Regards,

    Michael Pahl