BQ27220: if the BQ27220 can be used in handset device

user6387690

Prodigy 20 points

Part Number: BQ27220

When the battery has been used for 1% and shut down ,the BQ27220 's parameters only hold on for 60 hours.

If we reconfigure the BQ27220 's parameters,we must wait for completing a full charge and a full discharge.

It need maybe six hours. There's no handset device that needs to be used like this。

over 5 years ago

0 Wyatt Keller over 5 years ago

TI__Guru** 105590 points

Hello,

Could you define your issue more? Which parameters are only stored for 60 hours?

Can you export a .gg file of before and after your cycle and log the cycle as well so we can see which registers are being changed?

Sincerely,

Wyatt Keller

0 user6387690 over 5 years ago in reply to Wyatt Keller

Prodigy 20 points

Hello

I want to know if BQ27220 suite for handset device design?

Because it can not save configure parameters for example initial FCC, after battery has been used for empty

Even if we charge the battery full ,then need a long time learn cycle.

0 Wyatt Keller over 5 years ago in reply to user6387690

TI__Guru** 105590 points

Hello,

This gauge should work for many applications, during the re-initialization the gauge will re-load from the ROM that you can configure for your application.

Here are some threads discussing similar questions:

https://e2e.ti.com/support/power-management/f/196/t/855250?tisearch=e2e-sitesearch&keymatch=BQ27220%25252525252520data%25252525252520flash

https://e2e.ti.com/support/power-management/f/196/p/888418/3297292?tisearch=e2e-sitesearch&keymatch=BQ27220%25252520data%25252520flash#3297292

Sincerely,

Wyatt Keller

Power management

Power management forum

BQ27220: if the BQ27220 can be used in handset device