標題: An 83.4% Peak Efficiency Single-Inductor Multiple-Output Based Adaptive Gate Biasing DC-DC Converter for Thermoelectric Energy Harvesting
作者: Chen, Po-Hung
Fan, Philex Ming-Yan
電子工程學系及電子研究所
生醫電子轉譯研究中心
Department of Electronics Engineering and Institute of Electronics
Biomedical Electronics Translational Research Center
關鍵字: Adaptive gate biasing;dc-dc converter;energy redistribution control;single inductor multiple output;step-up converter;thermoelectric energy harvesting
公開日期: 1-Feb-2015
摘要: This paper presents a 100 mV input, 500 mV output single-inductor multiple-output (SIMO) based step-up dc-dc converter with adaptive gate biasing (AGB) technique implemented in 0.18 mu m CMOS technology for thermoelectric energy harvesting. The proposed AGB technique and near-threshold voltage (near-V-TH) energy redistribution control (ERC) ensure high conversion efficiency over a wide range of load currents. The proposed method automatically reduces conduction and switching losses of power MOSFETs without the need for auxiliary power converters or additional off-chip inductors. The AGB technique reduces conduction and switching losses under heavy-load and light-load conditions, respectively. The experimental results show that the efficiency of the proposed converter is enhanced by 25.5% and 18% at output load currents of 1500 mu A and 50 mu A, respectively. The proposed step-up dc-dc converter achieves the lowest output voltage and provides the highest conversion efficiency of 83.4% to date in standard CMOS process for thermoelectric energy harvesting.
URI: http://dx.doi.org/10.1109/TCSI.2014.2360765
http://hdl.handle.net/11536/124350
ISSN: 1549-8328
DOI: 10.1109/TCSI.2014.2360765
期刊: IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
Volume: 62
起始頁: 405
結束頁: 412
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