A High-Efficiency Multimode Li-Ion Battery Charger With Variable Current Source and Controlling Previous-Stage Supply Voltage

被引:72
作者
Chen, Jiann-Jong [1 ]
Yang, Fong-Cheng [1 ]
Lai, Chien-Chih [1 ]
Hwang, Yuh-Shyan [1 ]
Lee, Ren-Guey [1 ]
机构
[1] Natl Taipei Univ Technol, Dept Elect Engn, Taipei 106, Taiwan
关键词
Adaptive reference voltage; Li-Ion charger; variable current source; INTELLIGENT; COMPACT; DESIGN;
D O I
10.1109/TIE.2009.2018435
中图分类号
TP [自动化技术、计算机技术];
学科分类号
080201 [机械制造及其自动化];
摘要
A high-efficiency multimode Li-Ion battery charger with variable current source and controlling previous-stage supply voltage is presented in this paper. Using variable current source can achieve the goal of constant-current mode to charge the battery and control previous-stage supply voltage which could increase the efficiency of the multimode battery charger. Moreover, the charging mode adopted in this charger is applied by two types of dual-mode strategy decided by the value of the equivalent series resistance of the Li-Ion battery. This technique will reduce the damage of Li-Ion battery. The Li-Ion battery charger is designed with 0.35-mu m CMOS double-poly four-metal processes. The experimental results show that the charger works well and the theoretical analysis can be confirmed. The average power efficiency of the multimode Li-Ion battery charger can be up to 91.2% under the average power of 1.24 W, and the accuracy of the adaptive reference voltage is up to 97.3%. The chip area is only 1.32 x 0.95 mm(2).
引用
收藏
页码:2469 / 2478
页数:10
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