TI Releases New Li-Ion Battery Fast Charge Chipset
New battery fuel gauge and charger chipsets with MaxLife technology
allow consumers to charge faster without degrading the battery
TI has released two power management chipsets with TI's patented new MaxLife fast-charge technology,
which allows consumers to charge single-cell Li-Ion batteries faster and experience longer battery life.
The bq27530 and bq27531 fuel gauge circuits, coupled with TI's bq2416x and bq2419x chargers,
optimize battery performance using the highest possible charge rates with minimal battery degradation.
Mobile phone users are frustrated when their batteries' charge doesn't last as long after months of daily charging and discharging. TI's MaxLife technology leverages an innovative degradation modeling system to minimize charge time while extending battery service life - as much as 30 percent according to lab tests. Based on TI's popular Impedance Track battery capacity measurement technology, the MaxLife algorithm accurately predicts and avoids charge conditions that could degrade the battery.
Autonomous Battery Management
Traditional software-controlled battery management systems - whether implemented with a microcontroller, PMIC (power management integrated circuit) or digital signal processor - are limited in their ability to predict accurate battery capacity and translate that information into run time. The new bq27530 and bq24160 chipset for 2.5-A charge rates and the bq27531 and bq24192 chipset for 4.5-A charge rates give designers greater flexibility by having the gauge control the charger directly. This autonomous battery management system reduces software overhead, improves battery safety and security, provides better thermal management and allows a designer to adapt the charging algorithm to support different platforms and newer higher capacity batteries.
Features of the MaxLife fast-charge technology include:
- Faster charging at up to 4.5-A rates for single-cell lithium batteries.
- Extended battery service life with minimum degradation of run-time after each discharge cycle.
- High-efficiency charging with enhanced thermal management and reduced heat generation.
- High-performance Impedance Track monitoring system provides the most accurate capacity estimation and precise control of charging current and termination thresholds.
The company's Web site address is www.ti.com
[Reprinted with kind permission from Texas Instruments]