A Multiple-Input SC DC-DC Converter with Battery Charge Process

Author

Eguchi, Kei ; Pongswatd, Sawai ; Zhu, Hongbing ; Tirasesth, Kitti ; Sasaki, Hirofumi ; Inoue, Takahiro

Author_Institution

Dept. of Technol. Educ., Shizuoka Univ., Shizuoka, Japan

fYear

2009

fDate

1-3 Nov. 2009

Firstpage

697

Lastpage

700

Abstract

Aimed at a backlighting application, a multiple-input switched-capacitor (SC) DC-DC converter with battery charge process is proposed in this paper. Unlike conventional SC power converters such as a Dickson-type converter, etc., the proposed converter drives some LEDs by converting energy from solar cells when solar cells offer enough energy. Furthermore, the proposed converter can charge a lithium battery when an output load is light. Hence, the proposed converter enables us to realize long battery runtime. The validity of circuit design is confirmed by theoretical analyses, simulations, and experiments. The derived theoretical formulas will be helpful to estimate circuit characteristics, because theoretical results agree well with SPICE simulation results.

Keywords

DC-DC power convertors; SPICE; power capacitors; secondary cells; Dickson-type converter; LED; SPICE simulation results; backlighting application; battery charge process; circuit design; converter drives; lithium battery; multiple-input SC DC-DC converter; multiple-input switched-capacitors DC-DC converter; solar cells; Analytical models; Batteries; Circuit simulation; Circuit synthesis; DC-DC power converters; Light emitting diodes; Lithium; Photovoltaic cells; Runtime; Switching converters; DC-DC converters; backlighting applications; battery charge; multiple-input converters; switched-capacitor circuits;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Networks and Intelligent Systems, 2009. ICINIS '09. Second International Conference on

Conference_Location

Tianjin

Print_ISBN

978-1-4244-5557-7

Electronic_ISBN

978-0-7695-3852-5

Type

conf

DOI

10.1109/ICINIS.2009.178

Filename

5363523