BQ34Z100-G1: specifications of a 12V battery and 24A output current?

Arun P

Prodigy 30 points

Part Number: BQ34Z100-G1
Other Parts Discussed in Thread: BQ34Z100, BQ34Z100EVM, BQSTUDIO, GPCCHEM

Hi Team,
Please find the attached schematic for your reference.

Could you confirm if the design mentioned below is correct for the specifications of a 12V battery and 24A output current?

I've reviewed the EVK designs for my specifications; which one should I select?"
Kindly help me with the battery management studio for configuration of the mentioned battery.

Thanks,

Arun P

over 1 year ago

0 Diego over 1 year ago

TI__Mastermind 26115 points

Hi Arun,

There are a few concerning parts on your schematic. The SRN and SRP pins should look like the image below. The 1uF capacitor on REG25 should be placed in between reg25 and vss. I am unfamiliar with the SW1 but I would verify it will function properly.

I encourage you to review the BQ34z100 EVM Schematic and board layout guidelines in the documents linked below.

schematic - bq34z100EVM Wide Range Impedance Track Enabled Battery Fuel Gauge (Rev. B) (ti.com)

Layout - BQ34Z100-G1 Wide Range Fuel Gauge with Impedance Track Technology datasheet (Rev. D) (ti.com)

The EVM for the BQ34z100 is the BQ34z100EVM linked below.

BQ34Z100EVM Evaluation board | TI.com BQ34Z100EVM Evaluation board | TI.com

Here is some documentation on getting started with the BQ34z100 and BQstudio, this should help you get started.

Quickstart Guide for the bq34z100-G1 (ti.com)

BQSTUDIO Application software & framework | TI.com

Here is more information on learning cycles for your battery.

Simple Guide to Chemical ID Selection Tool (GPC) (Rev. A)

GPCCHEM Application software & framework | TI.com

How to perform a successful learning cycle with gauges | Video | TI.com

Hope this helps :)

Regards,

Evan

0 Abhilash K over 1 year ago

Prodigy 70 points

Hello Evan,

Please provide information about voltage to bq34z100E , we have connected 12Vdc directly to BAT pin. Will provide guidance to that?

0 Diego over 1 year ago in reply to Abhilash K

TI__Mastermind 26115 points

Hi Abhilash,

Can you further explain your question or the problem you are having so I may better assist you?

Which BAT pin are you applying 12V to BAT+ or BAT-

Are you working with the EVM or the part itself?

If you are using the EVM and a power supply, connect 12V to BAT+ and GND from the power supply to BAT-. This should simulate a 12V battery and should read 12V on BQstudio as you change the power supply voltage you should see the difference reflected on BQstudio.

Regards,

Evan