Pack-Side Impedance Track Fuel (Gas) Gauge Integrated Protector Reference Design


Design files


This reference design, using BQ27741 along with GaugeStudio software, provides the customer with tools for developing a battery fuel gauge module for placement inside a lithium-based battery pack. Customers are able to configure the solution so that it can provide accurate battery fuel gauging information. The integrated protection functionality can also be evaluated with this design. It gives the customer information such as battery voltage, temperature measurement, and Remaining State of Charge through its RAM registers. It also allows the customer to evaluate the BQ27741 IC according to the datasheet.

  • # Series Cells: 1S
  • Max Input Volts: 4.5V
  • Max Charge Current: 6A
  • Communication: I2C or HDQ

??image.gallery.download_en_US?? View video with transcript Video

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDU075.PDF (6274 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDR043.PDF (110 K)

Detailed schematic diagram for design layout and components

TIDR044.PDF (33 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDU076.PDF (97 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Battery fuel gauges

BQ27741-G1Pack-side Impedance Track™(tm) fuel (gas) gauge with integrated protector

Data sheet: PDF | HTML
Battery fuel gauges

BQ27742-G1Single cell Li-ion battery fuel gauge with integrated protection | battery gas gauge

Data sheet: PDF | HTML

Technical documentation

No results found. Please clear your search and try again.
View all 1
Type Title Date
Test report TIDA-00030 Test Results Aug. 26, 2013

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​