BQ24092: Tadiran TLI-1550 battery charging circuit

Daniel Ouro

Part Number: BQ24092
Other Parts Discussed in Thread: BQ25120A, BQ25150, BQ24201

Hi,

I am designing a new battery powered system to be used in high temperature environment and i am want to use Taridan's TLI batteries (which have extended temperature range) but these batteries have special charging conditions such as:

charging voltage: 4.1V

at normal temperature: Max charging current = 100mA

at high temperature: Max charginf current = 20mA

I have been digging in this forum and found that charging these batteries might be challenging so i would like to know if TI has some technical solution for charging these batteries taking in consideration these particular charging conditions.

In previous projects i've used the BQ24092 but this IC can't be used for charging these batterires (ISetMin = 100mA and has VO = 4.2v). Can you help me finding a solution for charging these kind of batteries?

over 5 years ago

0 Bill Johns over 5 years ago

TI__Guru 67876 points

Is chip scale an option, BQ25120A?
Do you have a micro controller to configure charger IC?

0 Daniel Ouro over 5 years ago in reply to Bill Johns

Prodigy 60 points

Hi Bill,

Thank you for your reply.

That might be an option. Do you have any other ICs that might meet these charging conditions?

Best regards,

Daniel

0 Bill Johns over 5 years ago in reply to Daniel Ouro

TI__Guru 67876 points

Hi Daniel
The 4.1V requirement limits the number of part, as you may have found.
1.) BQ25150, new device it is chip scale and will require mico controller, not stand alone.
2.) BQ24201, older device but is stand alone -- the low charge current and termination current may be issue.

Power management

Power management forum

BQ24092: Tadiran TLI-1550 battery charging circuit