Design of a Multiple-Input SC DC-DC Converter Realizing Long Battery Runtime

Kei EGUCHI; Sawai PONGSWATD; Amphawan JULSEREEWONG; Kitti TIRASESTH; Hirofumi SASAKI; Takahiro INOUE

doi:10.1587/transfun.E93.A.985

Regular Section

Design of a Multiple-Input SC DC-DC Converter Realizing Long Battery Runtime

Kei EGUCHI, Sawai PONGSWATD, Amphawan JULSEREEWONG, Kitti TIRASESTH, Hirofumi SASAKI, Takahiro INOUE

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Keywords: DC-DC converters, switched-capacitor circuits, back-lighting applications, clean energy

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Volume E93.A (2010) Issue 5 Pages 985-988

DOI https://doi.org/10.1587/transfun.E93.A.985

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Abstract

A multiple-input switched-capacitor DC-DC converter which can realize long battery runtime is proposed in this letter. Unlike conventional converters for a back-lighting application, the proposed converter drives some LEDs by converting energy from solar cells. Furthermore, the proposed converter can charge a lithium battery when an output load is light. The validity of circuit design is confirmed by theoretical analyses, simulations, and experiments.

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