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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A Fully Integrated Split-Electrode SSHC Rectifier for Piezoelectric Energy Harvesting
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A Fully Integrated Split-Electrode SSHC Rectifier for Piezoelectric Energy Harvesting

机译：完全集成的分体式SSHC整流器，用于压电能量收集

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摘要

In order to efficiently extract power from piezoelectric vibration energy harvesters, various active rectifiers have been proposed in the past decade, which include synchronized switch harvesting on inductor (SSHI), synchronous electric charge extraction (SECE), and so on. Although reported active rectifiers show good performance improvements compared to full-bridge rectifiers (FBRs), large off-chip inductors are typically required and the system volume is inevitably increased as a result, counter to the requirement for system miniaturization. In this paper, a fully integrated split-electrode synchronized switch harvesting on capacitors (SSHC) rectifier is proposed, which achieves significant performance enhancement without employing any off-chip components. The proposed circuit is designed and fabricated in a 0.18-mu m CMOS process and it is co-integrated with a custom microelectromechanical systems (MEMS) piezoelectric transducer with its electrode layer equally split into four regions. The measured results show that the proposed rectifier can provide up to 8.2x and 5.2x boost, using on-chip and off-chip diodes, respectively, in harvested power compared to an FBR under low excitation levels and the peak rectified output power achieves 186 mu W.
机译：为了有效地从压电振动能量收集器中提取功率，在过去的十年中提出了各种有源整流器，其中包括电感器上的同步开关收集（SSHI），同步电荷提取（SECE）等。尽管与全桥式整流器（FBR）相比，已报道的有源整流器表现出良好的性能改进，但通常需要大型片外电感器，因此不可避免地会增加系统体积，这与系统小型化的要求背道而驰。本文提出了一种完全集成的电容器（SSHC）整流器上的分离电极同步开关收集，该方法在不使用任何片外组件的情况下实现了显着的性能增强。拟议中的电路是在0.18微米CMOS工艺中设计和制造的，并且与定制的微机电系统（MEMS）压电换能器共集成，其电极层平均分为四个区域。测量结果表明，在低激励水平下，与FBR相比，所建议的整流器分别使用片上和片外二极管可在收成功率上分别提供高达8.2x和5.2x的升压，并且整流后的峰值输出功率达到186亩

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