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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A Fully Integrated Multilevel Synchronized-Switch-Harvesting-on-Capacitors Interface for Generic PEHs
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A Fully Integrated Multilevel Synchronized-Switch-Harvesting-on-Capacitors Interface for Generic PEHs

机译：一种完全集成的多级同步开关 - 用于通用PEHS的电容接口

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摘要

This article presents a novel architecture for realizing the synchronized-switch-harvesting-on-capacitors (SSHC) technique used for enhanced energy extraction from piezoelectric transducers. The proposed architecture allows full integration by utilizing the storage capacitor already present in most energy-harvesting systems. A promising circuit implementation of the technique, named multilevel SSHC (ML-SSHC), is proposed as well, and its performance is analyzed theoretically. Based on that, a fully integrated and power-efficient transistor-level design in 0.18-mu m CMOS is presented and fabricated in a prototype chip. When operating at a mechanical excitation frequency of 22 Hz and delivering between 1.51 mu m and 4.82 mu W, the measured increase in extracted power is 7.01x and 6.71x, respectively, relative to an ideal full-bridge rectifier. While the performance is comparable to the state of the art, this is the first implementation allowing full integration at such low frequencies without posing special requirements on the piezoelectric harvester.
机译：本文提出了一种用于实现用于增强压电传感器的能量提取的同步开关收集电容器（SSHC）技术的新型架构。所提出的体系结构通过利用大多数能量收集系统中已经存在的存储电容来完全集成。还提出了一个有前途的电路实现，命名为多级SSHC（ML-SSHC），理论上分析了其性能。基于此，在原型芯片中提出并制造了0.18-Mu M CMOS中的完全集成和高效的晶体管级设计。当以22Hz的机械激发频率运行并在1.51μm和4.82μm之间运行时，相对于理想的全桥式整流器，所提取的功率的测量值分别为7.01倍和6.71倍。虽然性能与现有技术相当，但这是第一个实现，允许在这种低频下完全集成而不会对压电收割机进行特殊要求。

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