A 60%-Efficiency 20nW-500μW Tri-Output Fully Integrated Power Management Unit with Environmental Adaptation and Load-Proportional Biasing for IoT Systems

📋 论文概要

本文提出了一种全集成三输出开关电容电源管理单元，适用于物联网系统，在20nW至500μW负载范围内实现60%的峰值效率。通过环境自适应和负载调节技术，解决了传统转换器转换比有限的问题，实现了宽负载范围的高效供电。

💡 主要创新点

• 提出三输出全集成开关电容DC-DC架构，支持多个独立电压输出，满足IoT系统多电压需求。
• 引入环境自适应技术，动态调整转换比以优化效率，适应不同工作条件。
• 实现超宽负载范围（20nW-500μW）的高效运行，同时保持极低静态功耗。

🏷 关键词

📄 原文摘要

Seokhyeon Jeong1, Kaiyuan Yang1, Myungjoon Choi1, ZhiYoong Foo1, Suyoung Bang1, Sechang Oh1, Dennis Sylvester1, David Blaauw1 University of Michigan, Ann Arbor, MI, 2Korea University, Seoul, Korea 1 As Internet-of-Things (IoT) systems proliferate, there is a greater demand for small and efficient power management units. Fully integrated switched-capacitor (SC) DC-DC converters are promising candidates due to their small form factor and low quiescent power, aided by dynamic activity scaling [1-3]. However, they offer a limited number of conversion ratios, making them challenging to use in actual systems since they often require multiple output voltages (to reduce power consumption) and use various input power sources (to maximize flexibility). In addition, maintaining both high efficiency and fast load response is difficult at low output current levels, which is critical for IoT devices as they often target low

👥 作者与机构

Wanyeong Jung1, Junhua Gu1, Paul D. Myers1, Minseob Shim2,