Battery Power - September/October 2013 - (Page 22)

New Products • ICs & Semiconductors New LGA-Packaged MOSFETs Help Maximize Efficiency and Battery Life in Space Limited Smart Phone and Tablet PC Applications TI Boosts Battery Run-Time in Portable Medical and Industrial Devices Texas Instruments (TI) has introduced a small and accurate Li-Ion battery fuel gauge integrated circuit, the bq27421, which boosts battery run-time in portable medical devices, such as wearable health monitors and industrial devices such as inventory scanners and portable emergency lights and other consumer electronics. Leveraging TI’s proven Impedance Track advanced battery technology typically used in tablets and smartphones, the bq27421 system-side fuel gauge in a 9-ball chipscale (WCSP) package accurately reports remaining battery capacity, state-ofcharge and battery voltage, allowing portable devices to extend run-time by 50 percent or higher. “Users of portable medical and other electronics need an accurate prediction of remaining battery capacity to better manage their mobile device and decide when to recharge or replace the battery. Whether it’s a blood glucose meter, wearable patient monitor bracelet or portable inventory scanner, you need accurate information to make good decisions,” said Steve Lambouses, vice president of battery management. “TI’s fuel gauges give consumers the battery information they can depend on, maximizing the level of convenience with their battery-powered devices and allowing them to get more runtime out of their batteries.” Designers can use the pre-configured “plug-and-play” bq27421 fuel gauge with TI’s new Gauge Studio software tool to simplify battery gauging design. The file size of the Gauge Studio design tool is about ten times smaller than TI’s previous software, dramatically minimizing configuration and system firmware development. The bq27421EVM-G1A evaluation development kit is available for $49. The bq27421 battery fuel gauge is available now in a 1.5mm by 1.5-mm by 0.5-mm, 9-ball WCSP package, and is priced at $1.20 in 1,000-unit quantities. A QFN package version is sampling to select customers, and is expected to be available in volume production in the fourth quarter. 22 Battery Power • September/October 2013 ON Semiconductor has introduced two MOSFET devices designed for use in smart phone and tablet PC applications where they provide a crucial part of the Lithium ion (Li-ion) battery charging / discharging protection circuit switching. The EFC6601R and EFC6602R help designers to reduce solution size, improve efficiency and maximize battery life. Suitable for single or dual Li-ion cell implementations, the RoHS compliant devices offer leading levels of RDS (on) performance and employ a Land Grid Array (LGA) structure to give them a small, low-profile design that makes them well suited for the limited space environment typical of smart phone and tablet PC applications. The EFC6601R has a specified maximum VSSS (source to source voltage) of 24 V, and the EFC6602R has a specified maximum VSSS of 12 V. Both devices operate from a 2.5 V supply, have a common-drain structure and a built-in protection diode. “Since the introduction of lithium ion batteries ON Semiconductor has been developing and supplying charging/discharging protection circuit switching MOSFETs,” said Takashi Akiba, general manager of MOS products for ON Semiconductor’s SANYO Semiconductor Products Group. “Our accumulated knowledge and expertise has enabled us to create these highly miniaturized devices that further help extend the battery life and enhance efficiency.” ON Semiconductor plans to add five further devices to the EFC MOSFET family within the year that will help designers of an even wider range of mobile devices achieve their application objectives for reducing solution size and extending battery life. The EFC6601R and EFC6602R are offered in halogen-free EFCP packages and are $0.80 and $1.00 in 5,000 unit quantities. Power Integrations Teams with Qualcomm Technologies on Rapid-Charging Technology for Mobile Devices Power Integrations has introduced CHY100, the first AC-DC wall-charger interface IC that enables designers of mobile devices to implement the Quick Charge 2.0 protocol from Qualcomm Technologies, Inc. Launched earlier this year, Quick Charge 2.0 enables users to charge mobile devices up to 75 percent faster than when using conventional technology, while maintaining www.BatteryPowerOnline.com http://www.BatteryPowerOnline.com

Table of Contents for the Digital Edition of Battery Power - September/October 2013

ABB to Build World’s Largest Network of EV Fast-Charging Stations in the Netherlands
Duracell Powermat and Starbucks Expand Wireless Charging in Silicon Valley Area
Thermal Management of an Electrical Vehicle Battery Packing Using 1D and 3D CFD
New Battery Technologies - Added Value Electronics Can Turn Normal Batteries into Smart Battery Packs
A Novel Single-Compartment Concentration Cell Driven by Natural Evaporation for Green Energy Harvesting
Highly Accurate Li-Ion Battery Simulation
Batteries
ICs & Semiconductors
Charging, Testing & Monitoring
Industry News
Marketplace
Application Profile

Battery Power - September/October 2013