Battery Management IC delivers protection and cell balancing.
July 22, 2011 -
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
Texas Instruments, Inc., Semiconductors
12500 Texas Instruments Blvd.
Dallas, TX, 75243
USA
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
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Trademarks
TI E2E is a trademark of Texas Instruments. All other trademarks and registered trademarks belong to their respective owners.
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