JSSC 2012第9期Other0.35 µm

A Fully Autonomous Integrated Interface Circuit for Piezoelectric Harvesters Tho

一种全自主自适应脉冲同步电荷提取器电路，专为宽输出电压范围的压电能量收集器优化。

0.35 µm CMOS, 1.3–20 V, 85%效率

压电能量收集器自适应电路同步电荷提取低功耗能量转换效率

▸自适应脉冲同步电荷提取器（PSCE）

▸低功耗设计（最小5.7 µW）

▸改进的开关技术提高提取功率20%

Abstract

This paper presents a fully autonomous, adaptive pulsed synchronous charge extractor (PSCE) circuit optimized for piezoelectric harvesters (PEHs) which have a wide output voltage range 1.3–20 V. The PSCE chip fabricated in a 0.35 µm CMOS process is supplied exclusively by the buffer capacitor where the harvested energy is stored in. Due to the low power consumption, the chip can handle a minimum PEH output power of 5.7 µW. The system performs a startup from an uncharged buffer capacitor and oper