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BQ25630: TS Pin Thermistor Configuration

Gilberto Ermacovitch
Prodigy 225 points
Part Number: BQ25630
Other Parts Discussed in Thread: BQ25638

Tool/software: 


Hi

I have to adjust the values ​​of T1 and RT2 for a different thermistor (PN MF520003600 from Cantherm). 

Where can I find the values ​​of VTS_cold and VTS_hot needed for the formula described in item 7.2.6.4.2?

BR

Gilberto

  • 0
    TI__Mastermind 32660 points

    Hi Gilberto, 

    For your reference you can refer to the values for VTS_cold and VTS_hot in the BQ25638 datasheet, which is available on TI.com. The TS pin design of the BQ25630 is set to be the same as BQ25638. 

    With default register configuration VTS_cold is typical 73.25% of bias reference (bias reference being VREGN pull-up supply) and VTS_hot is typical 34.50% of bias reference. If needed you will have the flexibility to adjust these thresholds via I2C configuration.  Table 7-2 in BQ25638 datasheet shows available options for changing VTS_cold, VTS_hot, etc. 

    Best Regards,

    Garrett