Calibration
13
SLUUAP4A – December 2013 – Revised July 2016
Copyright © 2013–2016, Texas Instruments Incorporated
bq27441 EVM: System-Side Impedance Track™ Technology
8
Calibration
The bq27441EVM must be calibrated to ensure accurate value reporting. This can be done by going to the
Calibration window in bqStudio (
).
8.1
Calibrating the bq27441
1. Select the types of calibration to be performed (see
).
2. Enter the measured values for the types selected.
3. Press the button to calibrate.
8.2
Voltage Calibration
Voltage calibration usually is not required. If needed, follow these steps:
1. Measure the voltage across Pack+ and Pack–.
2. Type the voltage value in mV into
Enter measured value
.
3. Press the
Calibrate
button.
8.3
Board Offset Calibration
This performs the offset calibration for the current offset of the board.
It is expected that no current is flowing through the sense resistor while performing this calibration step.
1. Remove load and short PACK– to LOAD–.
2. Press the
Calibrate
button.
Figure 11. Calibration Screen
