IC protects battery packs for e-bikes, power tools
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. It 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 include
- 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.
The bq77910 is available in a 38-pin TSSOP package, priced at $2.70 in quantities of 1,000.
- Fraunhofer launches test centre for high-voltage batteries
- Femtocell improves in-car mobile connectivity
- Radar-based sensor network helps drivers finding a parking spot
- Industrial production of li-ion cells in Germany comes closer
- Ballard IP to boost Audi’s fuel cell developments
- TI’s SafeTI software development certified to ISO 26262/IEC 61508
- Toyota tests SiC technology in near-series designs
- Supercapbatteries, thermoelectrics to power future cars
- Cell-balancing IC facilitates energy recuperation application design
- Are next generation EV batteries a step closer?
- General Motors targets Tesla with EV launches
- Configurable buck DC/DCs deliver 8 A from 2 to 4 independent outputs
- Mercedes-Benz self driving car communicates via LEDs
- Ford highlights smart mobility, new infotainment generation
- Toyota boosts electric driving: 5.600 fuel cell patents open for free usage
- Freescale unveils vision SoC for accident-free cars
- Bosch seeks to hire thousands of engineers
- Study: Autonomous driving changes cities and auto industry
- NXP, Freescale plan mega merger
- NXP to focus on all CMOS radar
- Xilinx flexes its muscles in the ADAS arena
- Porsche rainmaker advocates platooning
- Opinion: What the NXP/Freescale takeover means for automotive electronics
- Vehicle-in-the-Loop speeds automotive design cycles
- Auto chip market: upheaval ahead
- Harman: How the Connected Car shapes future infotainment systems
- Research E/E architecture goes open source
- Opel develops headlight control through eye-tracking
- Bosch CEO predicts cheaper batteries, networked traffic
- Bosch to launch business unit for motorbike electronics
- Intel helps to Turbocharge Infotainment Systems Designs
- Making cars safer through technology innovation
- Supplying DC input power for HEV testing
- NSR Noise Suppressors: Wirewound Resistors
- Virtual Hardware “In-the-Loop”: Earlier Testing for Automotive Applications
- Open Standards and Product Differentiation
- Camera Solutions with Micrel Power Management and Networking