A 1µW-to-1mW Energy-Aware Interface IC for Piezoelectric Harvesting with 40nA Quiescent Current and Zero-Bias Active Rectifiers

📋 论文概要

该论文提出了一种用于压电能量采集的能量感知接口集成电路，能够在1µW至1mW的宽功率范围内高效工作，解决了现有接口电路在间歇性采集功率下能量损失高的问题。

💡 主要创新点

• 提出了一种零偏置有源整流器，显著降低了静态功耗，实现了40nA的静态电流。
• 设计了能量感知控制电路，可根据输入功率动态调整工作模式，在1µW至1mW范围内保持高效能量转换。

🏷 关键词

📄 原文摘要

systems drives an intensive use of ultra-low power circuit techniques. Smart sensor systems composed of an energy harvester, sensors, an energy storage system and wireless transceivers require an efficient interface circuit for voltage regulation of varying voltage sources, such as piezoelectric energy (PE) harvesters. Existing implementations of PE interface circuits using rectifiers and supply voltage regulators [1-4], suffer from high energy losses especially when considering intermittent harvested powers. To address this challenge, we propose an integrated PE interface IC with an original zero bias rectifier circuit and an energy-aware supply regulator. The application and the detailed block diagram of the proposed PE interface IC

👥 作者与机构

Chris van Liempd1, Stefano Stanzione1, Younis Allasasmeh1,

Chris van Hoof2,3 imec - Holst Centre, Eindhoven, The Netherlands, imec, Heverlee, Belgium, 3 KU Leuven, Leuven, Belgium 1 2 Today’s relentless demand for autonomous smart sensor