A variable step-down conversion ratio switched capacitor DC-DC converter for energy harvesting systems working in intermittent mode

Energy harvesting systems stimulate the development of power management for low power consumption applications. Improving the converter efficiency of power management circuits has become a significant issue in energy harvesting system design. This paper presents a variable step-down conversion ratio...

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Bibliographic Details
Published inJournal of semiconductors no. 12; pp. 103 - 107
Main Author 郝文瀚 贾晨 陈虹 张春 王志华
Format Journal Article
LanguageChinese
Published 2009
Subjects
DC
开关电容
无线监控系统
比率
转换器
采伐
间歇模
降压
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Summary:Energy harvesting systems stimulate the development of power management for low power consumption applications. Improving the converter efficiency of power management circuits has become a significant issue in energy harvesting system design. This paper presents a variable step-down conversion ratio switched capacitor （SC） DC-DC converter to advance the converter efficiency of charge on the stored capacitor in a wireless monitoring system of orthopedic implants. The converter is designed to work at 1 MHz switching frequency and achieves 15 to 2 V conversion. Measurement results show that the converter efficiency can reach 42% including all circuit power consumption, which is much higher than previous work.
Bibliography:TU113.666
energy harvesting system
switched-capacitor DC-DC converter
piezoelectric elements
TN713.92
11-5781/TN
energy harvesting system; switched-capacitor DC-DC converter; piezoelectric elements
ISSN:1674-4926