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System-Level Power Management Design Issues for Handheld Wireless Devices

Authored on: Feb 11, 2005 by Andrew Girson

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As the electronics world embraces wireless devices—from cell phones to smart sensors to wearable computers—it naturally embraces power management technology as well. And the reason for embracing power management technology is simple—it is the ability of a wireless device to operate for long periods of time that makes it autonomous. But, another reason power management technology has become so important is that battery technology—power management's logical partner in extending operational life—has simply lagged advances in semiconductors and software. Specifically, over the past decade, the increasing desire of users for more functionality in smaller wireless devices has not been matched by improvements in battery energy density.

This article delves into the challenges that lie ahead for designing cost-effective energy aware devices that offer both high performance and extended battery life.

Reprinted in its entirety from ARM IQ Vol. 3, No. 4

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