Battery Management IC delivers protection and cell balancing.

Press Release Summary:




Offered as standalone device, bq77910 offers protection and cell-balancing for 4- to 10-cell Li-Ion and lithium iron phosphate battery packs. IC monitors individual cell voltages and drives 2 N-channel power MOSFETs to interrupt current flow during fault conditions. Criteria for fault detection and recovery is fully programmable in non-volatile memory. Product simplifies battery pack designs for e-bikes, e-scooters, portable gardening tools, power tools, and UPS.



Original Press Release:



TI Introduces Industry's First Single-Chip Battery Management Device for Power Tools and E-bike Applications



Highly integrated, standalone device provides complete pack protection and cell-balancing for 4- to 10-cell lithium battery packs

DALLAS -- Texas Instruments Incorporated (TI) (NYSE: TXN) today introduced the industry's first fully integrated battery protection and cell-balancing solution for Li-Ion and lithium iron phosphate battery packs. The bq77910 battery management and protection device can manage 4- to 10-cell battery packs, and two devices can be stacked to protect 11- to 20-cell packs. The device simplifies battery pack designs for e-bikes, e-scooters, portable gardening tools, power tools and uninterruptible power supplies (UPS) and can also be used when replacing lead acid batteries. For samples and evaluation modules, visit www.ti.com/bq77910-pr.

The bq77910 protects the battery pack by monitoring individual cell voltages and drives two N-channel power MOSFETs to interrupt current flow during fault conditions. Fault detection and recovery criteria for the device are fully programmable in non-volatile memory to suit all types of lithium battery systems.

Key features and benefits of the bq77910

-- Battery management and protection for 4- to 10-cell lithium batteries: Individual cell monitoring and balancing with internal FETs maximizes battery pack service life and performance.
-- Low power operation: Low quiescent current (50 uA typical, 2.5 uA in shutdown mode) minimizes battery discharge during storage or idle periods to optimize battery life.
-- Supports additional lithium battery chemistries: Programmable (EEPROM) fault detection thresholds and time delays make the bq77910 adaptable to all variations of lithium systems, including LiCoO2 and LiFePO4.
-- Standalone integrated solution does not require an external controller or processor.

Tools and support

TI offers a variety of tools and support to speed the implementation of the bq77910 family of devices:

-- bq77910EVM-001 evaluation module: www.ti.com/bq77910evm-pr.
-- bq77908-10-GUI-SW evaluation software: www.ti.com/bq77910guisoftware-pr.

Availability and pricing

The bq77910 is available now in a 38-pin TSSOP package, priced at $2.70 in quantities of 1,000.

Find out more about TI's battery management portfolio by visiting the links below:

-- Download TI's 2011 Power Management Selection Guide: www.ti.com/2011powerguide-pr.
-- Download TI's new 2011 Hybrid and Electric Vehicle Solutions Guide: www.ti.com/hevguide-pr.
-- Learn more about the bq77910 solution by viewing a short video at www.ti.com/bq77910video-pr.
-- Learn about battery management systems by viewing Michael Weitz's overview video at www.ti.com/batterymgmtvideo-pr.
-- Ask questions, help solve problems in the Battery Forum in the TI E2E(TM) Community: www.ti.com/batteryforum-pr.

About Texas Instruments

Texas Instruments semiconductor innovations help 80,000 customers unlock the possibilities of the world as it could be - smarter, safer, greener, healthier and more fun. Our commitment to building a better future is ingrained in everything we do - from the responsible manufacturing of our semiconductors, to caring for our employees, to giving back inside our communities. This is just the beginning of our story. Learn more at www.ti.com.

Trademarks

TI E2E is a trademark of Texas Instruments. All other trademarks and registered trademarks belong to their respective owners.

All Topics