BQ27421EVM-G1A: bq27421-G1A / Parameter in Calibration class

S.Satoshi

Part Number: BQ27421EVM-G1A

Hi,

I'd like to ask which parameter will be updated during operation in Calibration class. From my evaluation, I think that only Board Offset, Int Temp Offset and Pack V Offset are updated during operation as below. Is my understanding correct?

Best Regards,

Satoshi / Japan Disty

over 8 years ago

0 Dominik Hartl11 over 8 years ago

TI__Guru 61006 points

Satoshi-san,

The gauge can auto-calibrate internal offsets. It will temporarily switch the input to the voltage ADC and the input to the Coulomb Counter to ground and measure the internal offset errors.

The auto-calibrated parameters are: Int Temp Offset, Pack V Offset, CC Offset.

Regards,
Dominik.

0 S.Satoshi over 8 years ago in reply to Dominik Hartl11

Guru 21685 points

Hi Dominik,

Thank you for your response. I understand that Int Temp Offset, Pack V Offset and CC Offset are updated by auto-calibration. Then how about Board Offset? Is Board offset also updated by Board Offset?

Best Regards,
Sonoki

0 Dominik Hartl11 over 8 years ago in reply to S.Satoshi

TI__Guru 61006 points

Sonoki,

You have to measure the board offset manually.

Regards,
Dominik.

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BQ27421EVM-G1A: bq27421-G1A / Parameter in Calibration class