Design of a multi-mode and high-stability linear charger for lithium-ion batteries

Lan Dai, Ke Qing Ning, Yan Feng Jiang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, a monolithic linear charger for single-cell Lithium-ion batteries is presented. It is capable of operating within USB power specifications and adopts multiple charging modes (constant-current and constant-voltage). Due to novel constant-current and constant-voltage charging circuits, it achieves high stability and high accuracy charging voltage. In addition, an internal thermal feedback loop reduces the programmed charging current if the die temperature attempts to rise above a preset value of approximately 120□. The chip is implemented in a CSMC 0.5um CMOS mixed-signal process, experimental results shows the charging current of constant-current mode is 497mA and the final voltage of the battery after is 4.191V.

Original languageEnglish (US)
Title of host publicationICSICT-2010 - 2010 10th IEEE International Conference on Solid-State and Integrated Circuit Technology, Proceedings
Pages345-347
Number of pages3
DOIs
StatePublished - Dec 1 2010
Event2010 10th IEEE International Conference on Solid-State and Integrated Circuit Technology - Shanghai, China
Duration: Nov 1 2010Nov 4 2010

Publication series

NameICSICT-2010 - 2010 10th IEEE International Conference on Solid-State and Integrated Circuit Technology, Proceedings

Other

Other2010 10th IEEE International Conference on Solid-State and Integrated Circuit Technology
CountryChina
CityShanghai
Period11/1/1011/4/10

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