BQ27Z746: HW-Protection Calibration Command

Hello,

When doing the HW based protection calibration in production, the steps below should be followed  (NOTE: the steps below are ONLY for the Protector Tuning method and cannot be followed for the Protector Threshold method):

1. Use the Protector Tuning tab in bqStudio to calibrate all of the HW based protection thresholds using an EVM or gauge that you use to collect the golden Image.
2. Read the image from 0xF0A2 ProtectorImage2 and save this configuration somewhere (see the following bit mapping for ProtectorImage2)
3. In production, for each gauge, you would then have to read back the value for 0xF0A2 ProtectorImage2, change only the non-reserved bits to the values you have previously saved, then write this value back into the gauge for ProtectorImage2.
4. You would then have to save and lock the protection settings by using 0xF0A3 ProtectorImageSave.                              

Regards, 

Robert. 

Hello, 

This is the expected behavior of the gauge as this is within 20mV accuracy. 

Regards, 

Robert.