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TI launches single-chip battery management device

Posted: 25 Jul 2011 ?? ?Print Version ?Bookmark and Share

Keywords:single-chip? battery management? Li-Ion?

Texas Instruments Inc. (TI) has released a 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每 to 10每cell battery packs, and two devices can be stacked to protect 11每 to 20每cell packs. The device enables individual cell monitoring and balancing with internal FETs maximizes battery pack service life and performance. It offers low power operation with a low quiescent current of 50 uA typical, 2.5 uA in shutdown mode. It also minimizes battery discharge during storage or idle periods to optimize battery life.

Renesas' power MOSFETs
Renesas has released 100A high-current power MOSFETs geared specifically for consumer products such as cordless power tools and power-assisted bicycles.
According to Renesas, the devices have the lowest loss levels in the industry. Read more about Renesas' power MOSFETs.

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.

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. It 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.

TI is also offering the bq77910EVM-001 evaluation module and bq77908-10-GUI-SW evaluation software support to speed the implementation of the bq77910 family of devices.





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