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TPS25855-Q1: NTC Adjustment

Evan Wang
Expert 5830 points
Part Number: TPS25855-Q1

Hi Team,

From the datasheet of TPS25855-Q1, we try to adjust the thermal threshold accordingly but it seems that the value list below is not match what we see in Figure 10-12.

And the equation below is also wrong.

Please help to check whether it's correct or not.

BTW, do we have any existing tool for customer including diagram based on excel file?

Thank you. 

  • 0
    TI__Mastermind 39860 points

    Hello Evan,

    The formula is correct. Which thermistor is being used for testing?

    Please note that:

    • R2 is the resistance at temperature T2, which is in Kelvin and not Celsius.
    • T1 is also in Kelvin
    • Consult the chosen NTC's datasheet for the value of the B-Constant

    Unfortunately, we do not have any existing tools for this formula to share with the customer.

    BR,

    Seong