Hi,
In bq76930 and bq76940 Evaluation Module User's Guide,
step 22 to step 27 in 2.2.2 Gauge Quick Start
I have some questions:
1. What is the result of Calibrate CC Offset and Calibrate Current? it will change bq76930 registers value?
2. If I only use bq76930 AFE with STM MCU, I need to do calibration or not?
3. bq76930 afe already calibrated during manufacturing process?
bq76930 and bq76940 Evaluation Module User's Guide
2.2.2 Gauge Quick Start
22. Select the Calibration bq78350 view.
23. Enter the board temperature in the Temperature Sensor boxes and click on the Calibrate
Temperature button. Wait until a check box appears next to the button.
24. Measure the voltage of the BATT terminals. Divide the value by the number of cells and enter the
value in mV in the Ext Average Cell Voltage box. Click on the Calibrate Voltage button. Wait until a
check box appears next to the button.
25. Disconnect the load from the PACK terminals. Click on the Calibrate CC Offset button and wait until
the check mark appears next to the button.
26. Connect the load set to a known value of approximately 2 A to the PACK terminals. Enter the value in
mA into the Applied Current box. Discharge current should be entered as a negative value. Click on
the Calibrate Current button and wiat until the check mark appears next to the button.
27. Select the Registers view and Refresh the values. Observe the updated voltage, temperature and
current values.
Thanks
