A Self-Biased 5-to-60V Input Voltage and 25-to1600µW Integrated DC-DC Buck Converter with Fully Analog MPPT Algorithm Reaching up to 88% End-to-End Efficiency

📋 论文概要

该论文提出了一种用于能量收集的自偏置集成DC-DC降压转换器，输入电压范围为5-60V，输出功率范围为25-1600µW，并采用全模拟最大功率点跟踪（MPPT）算法，解决了高压能量收集系统中功率传输效率低的问题。

💡 主要创新点

• 采用自偏置结构，无需额外偏置电路，简化了系统设计并降低了功耗。
• 提出全模拟MPPT算法，避免了数字控制带来的复杂性和功耗，适用于微瓦级能量收集应用。
• 实现了宽输入电压范围（5-60V）和宽功率范围（25-1600µW）的集成设计，适用于汽车等高压环境。

🏷 关键词

📄 原文摘要

Energy harvesting is seen as an enabling technology for autonomous wireless sensing in automotive applications. This technology may rely on piezoelectric or electrostatic energy conversion using the energy available during the tire impact with the road. The power management system has to transfer harvested power to the load battery (few μW to mW) with the highest possible efficiency. An electrostatic harvester can generate voltages up to 40V even at low accelerations [1]. Hence, a high voltage (HV) DC-DC converter is needed to maximize the energy transfer from the harvester to the load battery. However, HV buck converters including maximum power point tracking (MPPT) algorithms have been shown only for much higher ranges of power, in the order of W [2]. On the other hand,

👥 作者与机构

Stefano Stanzione1, Chris van Liempd1, Rob van Schaijk1,

Yasuyuki Naito2, Refet Firat Yazicioglu3, Chris van Hoof1,4 imec - Holst Centre, Eindhoven, The Netherlands, 2Panasonic, Osaka, Japan, imec, Leuven, Belgium, 4KU Leuven, Leuven, Belgium 1