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BQ77905: temperature protection

Torsten Hagge
Prodigy 20 points
Part Number: BQ77905

Hi Support team,

has anybody a simple excel table with temperature thresholds of BQ77905 to optimize temperature behavior? US customer of 500k BMS like to get a 75°C cut off with just 5°C hysterese for optimal operation, so different NTCs/ RTS/PU combinations have to be evaluated...

Thanks and take care,

Torsten

  • 0
    TI__Mastermind 25980 points

    Hi Torsten,

    We don't have anything like this ready-made, but we have the thresholds listed in the datasheet as a ratio of the VTB measurement bias voltage. This is nominally 3V, so the customer can calculate what their pullup and thermistor values should be based on this information to achieve the desired threshold and hysteresis.

    Regards,

    Max Verboncoeur