BQ34Z100-G1: Calibration commands

Evan Beeton

Part Number: BQ34Z100-G1

Tool/software:

There are numerous calibration commands (eg: BOARD_OFFSET, CC_OFFSET, CC_OFFSET_SAVE, CAL_ENABLE, EXIT_CAL, ENTER_CAL, OFFSET_CAL) found in the Tech Reference documentation. But I can find no information about to use them and when to use them. I assume that these commands should be performed in a specific order.

Any guidance would be most helpful.

over 1 year ago

0 Diego over 1 year ago

TI__Mastermind 26545 points

Hi,

These videos explain the calibration process.

Perform voltage calibration with the BQ34Z100-G1 | Video | TI.com

Perform current calibration with the BQ34Z100-G1 | Video | TI.com

Regards,

Diego

0 Evan Beeton over 1 year ago in reply to Diego

Prodigy 120 points

This seemed to calibrate the eval board and not my products board. Perhaps I am missing something. I have seen a reference to "Performing Optimized Flash Configuration" but can't seem to find it.

0 Diego over 1 year ago in reply to Evan Beeton

TI__Mastermind 26545 points

Hi,

Correct, but the process is the same. I am unsure what you are referencing.

Regards,

Diego

0 Evan Beeton over 1 year ago in reply to Diego

Prodigy 120 points

I was hoping for some guidance as to how to use these commands outside of Battery Management Studio. For example, charge the battery to full, then issue the BOARD_OFFSET and CC_OFFSET commands wait until the BCA and CCA bits clear than issue the CC_OFFSET_SAVE command.

Thanks.

+1 Diego over 1 year ago in reply to Evan Beeton

TI__Mastermind 26545 points

Hi,

Board_offset, calibrates the board offset and cc_offset, calibrates the coulomb counter offset.

You should calibrate the gauge using a stable power supply, rather than fully charged batteries.

Section 3.4 in the TRM goes over the voltage calibration process.

You can then manually modify CC GAIN and CC DELTA for current calibration.

Regards,

Diego

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BQ34Z100-G1: Calibration commands