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Content Provider | IEEE Xplore Digital Library |
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Author | Min Chen Rincon-Mora, G.A. |
Copyright Year | 2004 |
Abstract | A novel, accurate, compact, and power-efficient lithium-ion (Li-Ion) battery charger designed to yield maximum capacity, cycle life, and therefore runtime is presented and experimentally verified. The proposed charger uses a diode to smoothly (i.e., continuously) transition between two high-gain linear feedback loops and control a single power MOS device, automatically charging the battery with constant current and then constant voltage. An adaptive power-efficient charging scheme in the form of a cascaded switching regulator supply ensures the voltage across the charging power-intensive pMOS remains low, thereby reducing its power losses and yielding up to 27% better overall power efficiency. An 83% power-efficient printed circuit board prototype was built and used to charge several Li-Ion batteries to within plusmn0.43% of their optimum full-charge voltage and therefore within a negligibly small fraction of their full capacity |
Sponsorship | IEEE Circuits and Systems Society |
Starting Page | 1180 |
Ending Page | 1184 |
Page Count | 5 |
File Size | 960888 |
File Format | |
ISSN | 15497747 |
Volume Number | 53 |
Issue Number | 11 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2006-11-01 |
Publisher Place | U.S.A. |
Access Restriction | One Nation One Subscription (ONOS) |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Batteries Runtime Diodes Feedback loop Linear feedback control systems Automatic voltage control MOS devices Regulators Printed circuits Prototypes switching charger Adaptive power supply constant current (CC) charger constant voltage (CV) charger lithium-ion (Li-Ion) battery linear charger |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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