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CCS/BQ40Z60: How to choose NTC second source

Part Number: BQ40Z60

Tool/software: Code Composer Studio

Thanks very much Onyx! I still have some confusion.

1, Because I tried to enter below coefficients and R/T table of NTC 'DHT0A103F34D2SY' , 'JDR103F344F' into excel to get temperature error, but I found I couldn't get temperature error. So could you help analyze temperature error with below coefficients and NTC 'DHT0A103F34D2SY' , 'JDR103F344F'?

My current thermal coefficients are like below. I made an excel listing R/T tables for them.

Calibration

Cell Temperature Model

Coeff a1

-11130

Calibration

Cell Temperature Model

Coeff a2

19142

Calibration

Cell Temperature Model

Coeff a3

-19262

Calibration

Cell Temperature Model

Coeff a4

28203

Calibration

Cell Temperature Model

Coeff a5

892

Calibration

Cell Temperature Model

Coeff b1

328

Calibration

Cell Temperature Model

Coeff b2

-605

Calibration

Cell Temperature Model

Coeff b3

-2443

Calibration

Cell Temperature Model

Coeff b4

4696

Calibration

Cell Temperature Model

Rc0

11703

Calibration

Cell Temperature Model

Adc0

11703

Calibration

Cell Temperature Model

Rpad

0

Calibration

Cell Temperature Model

Rint

0

5086.R_T tables for two sources.xlsx

2,  Does ' running the calibration routin' mean doing calibration step for temperature, voltage and current?

3, Is below table default data? What are the meanings of Rc0, Adc0, Rpad and Rint?

Rc0

Adc0

Rpad

Rint

  • 1. Where is the excel sheet you used to calcualtate the coefficients. graphs  3 and 4 show the error

    2. yes

    3. Those are parameters internal to the chip. see the figure in the excel sheet. You should not modify those.

    thank

    Onyx