BQ40Z50: JEITA charge Algorithms

rock shen

Intellectual 585 points

Part Number: BQ40Z50
Other Parts Discussed in Thread: BQSTUDIO

Hi,Sir:

From the Gauge IC BQ40Z50's spec, it had JEITA charge algorithms,

Is there any document tell us how to configurate the parameter to achive the JEITA function?

For the JEITA function, does both the Gauge IC and charge IC need support?

Thanks!

over 5 years ago

0 Wyatt Keller over 5 years ago

TI__Guru** 105590 points

Hello Rock,

I believe both the gauge and charger would need to be JEITA compliant, let me check for a document and get back to you.

Sincerely,

Wyatt Keller

0 Wyatt Keller over 5 years ago in reply to Wyatt Keller

TI__Guru** 105590 points

Hello Rock,

The battery gauge is able to perform JEITA compliant charging but you must check with the battery manufacturer to set the correct values of charging in each temperature range.

Sincerely,

Wyatt Keller

0 rock shen over 5 years ago in reply to Wyatt Keller

Intellectual 585 points

Hi,Wyatt:

Which register should I configurate it?

Thanks!

0 Wyatt Keller over 5 years ago in reply to rock shen

TI__Guru** 105590 points

Hello Rock,

You will need to configure the parameters in the Advanced Charge Algorithm section of Data Memory in bqStudio. This will let you change all the charging parameters depending on temperature to match with JEITA.

Sincerely,

Wyatt Keller

0 rock shen over 5 years ago in reply to Wyatt Keller

Intellectual 585 points

Hi,Wyatt:

Any document or application note could tell us which register should be configurated and how to configurate?

Thanks!

0 Wyatt Keller over 5 years ago in reply to rock shen

TI__Guru** 105590 points

Hello Rock,

This paper explains the JEITA method with our gauges: https://www.ti.com/lit/an/slyt365/slyt365.pdf?ts=1591983870387&ref_url=https%253A%252F%252Fwww.google.com%252F

You can follow the JEITA requirements from their paper as well: https://home.jeita.or.jp/page_file/20110517171451_cub9MvYFEh.pdf

The registers to configure in bqStudio are in the Advanced Charging Algorithm section of memory. You should just be able to type in the values you need. If you want to do direct writes you will need to use the advanced communication and check the TRM for the registers you need to configure.

Sincerely,

Wyatt Keller

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BQ40Z50: JEITA charge Algorithms