Measurements are taken using a Semitec 103-AT thermistor, the default temperature polynomial, and the 18-kΩ internal pullup
resistor.
Figure 16-2. Thermistor Temperature Error
16.2.4 Calibration Process
The BQ76942 device includes the ability for the user to calibrate the current, voltage, and temperature
measurements on the customer production line. Detailed procedures are included in the
. The device provides capability to calibrate individual cell voltage measurements, stack
voltage, PACK pin voltage, LD pin voltage, current measurement, and individual temperature measurements.
16.2.5 Design Example
show a full schematic of a basic monitor circuit based on the BQ76942 for a
7-series battery pack.
shows the board layout for this design.
SLUSE14B – DECEMBER 2020 – REVISED DECEMBER 2021
68
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