JSSC 2020第8期Other0.18µm CMOS

Piezoelectric Energy-Harvesting Interface Using Split-Phase Flipping-Capacitor R

提出一种分相翻转电容整流器（SPFCR），优化压电能量收集接口的电容数量与能量提取效率的权衡。

最大输出功率提升率（MOPIR）达9.3倍（VD=0.12V时）

压电能量收集翻转电容整流器能量提取效率最大功率点跟踪开关电容转换器

▸采用分相翻转电容技术提升能量提取效率

▸通过多电压转换比（MVCR）开关电容DC-DC转换器优化输入功率适配

▸利用全桥整流器（FBR）分数开路电压（VOC,FBR）实现最大功率点跟踪（MPPT）

Abstract

This article proposes a split-phase ﬂipping-capacitor rectiﬁer (SPFCR) to resolve the hard tradeoff between the num- ber of capacitors and the energy-extraction efﬁciency for capaci- tive piezoelectric energy-harvesting (PEH) interfaces. By splitting the capacitor usage into multiple phases, this article can achieve the most number of ﬂipping phases using the same number of capacitors when compared with the state of the art. We also relaxed the implementation complexity by removing insigniﬁcant