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Manage Li-ion batteries for portable devices

Posted: 16 Apr 2008 ?? ?Print Version ?Bookmark and Share

Keywords:portable devices? Li-ion batteries? design? charge management system? MCU?

Portable CE devices are achieving improved performance and increasing functionality, thus requiring maximized runtimes out of each battery charge cycle. The addition of a growing number of features is also creating a demand for higher capacity batteries. Li-ion batteries are ideal for a variety of portable-electronic applications because of their high cell voltage, high density, long shelf life and maintenance-free nature. In addition to the popular 4.2V charge voltage regulation 1C maximum charge/discharge rate, new technology in Li-ion batteries may require different charge voltages and deliver higher C-rates.

This article discusses some new trends in Li-ion batteries and shows how portable product designers can design a flexible Li-ion battery charge management system using an MCU-controlled pulse-width modulation module or a stand-alone integrated battery charge-management controller-based solution.

View the PDF document for more information.

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