一种500nW-50μ W多模MPPT室内光伏能量采集器

2020 International Symposium on VLSI Design, Automation and Test (VLSI-DAT) Pub Date : 2020-08-01 DOI:10.1109/VLSI-DAT49148.2020.9196387

Ming-Chia Chang, Min-Hsuan Wu, Shen-Iuan Liu

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引用次数: 1

摘要

提出了一种500nW $- 50 \mu \mathrm{W}$室内光伏能量采集器，该采集器具有多模最大功率点跟踪(MPPT)电路。实现了三种不同开关尺寸和飞行电容的开关电容DC-DC变换器(scdc)。提出了一种多模MPPT电路，用于调节scdc的电压转换比和开关频率。此外，该多模MPPT电路还采用了三个可重构的scdc来覆盖500nW的输入功率范围$\sim 50 \mu \mathrm{W}$。该室内光伏能量采集器采用0.18m CMOS工艺实现，其有效面积为1.15mm2。实测的峰值功率转换效率为64.4%.

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A 500nW-50μ W Indoor Photovoltaic Energy Harvester with Multi-mode MPPT

A 500nW$- 50 \mu \mathrm{W}$ indoor photovoltaic energy harvester is presented with a multi-mode maximum power point tracking (MPPT) circuit. Three switched-capacitor DC-DC converters (SCDCs) with different switch sizes and flying capacitors are realized. A multi-mode MPPT circuit is presented to tune the voltage conversion ratios and the switching frequency of the SCDCs. In addition, this multi-mode MPPT circuit also utilizes three reconfigurable SCDCs to cover the input power range of 500nW $\sim 50 \mu \mathrm{W}$. This indoor photovoltaic energy harvester is realized in a 0.18m CMOS process and its active area is 1.15mm2. The measured peak power conversion efficiency is 64.4%.

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来源期刊

2020 International Symposium on VLSI Design, Automation and Test (VLSI-DAT)

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