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LM25118-Q1: Thermal rise calculation for LM25118-Q1 Buck Boost converter

Venu Bonthala
Prodigy 10 points
Part Number: LM25118-Q1

WBDesign_LM25118 DC DC Controller.pdf

Hi,

I am planning to use LM25118-Q1 in design. From webench report, the junction temperature rise is around 20Celsius with 130mA load current.

Can you share excel sheet which has relevant formula of Power consumption and Junction temperature calculation ? 

I doubt webench simulation may show higher power consumption and higher rise in junction temperature.

Regards

Venu

  • 0
    TI__Genius 12365 points

    Hi Venu,

    I don't have the excel sheet for junction temperature calculation.

    The loss of the controller is determined by the BIAS current and gate driver loss. The loss are almost load independent.

    Best Regards,

    Feng Ji