A 194nW Energy-Performance-Aware IoT SoC Employing a 5.2nW 92.6% Peak Efficiency Power Management Unit for

📋 论文概要

该论文提出了一款194nW的自供电物联网SoC，集成了5.2nW、峰值效率92.6%的电源管理单元，通过最小能量点跟踪等多项电源管理技术，在超低功耗与性能间实现灵活折中，从而延长系统工作寿命并缩小能量采集器尺寸。

💡 主要创新点

• 提出超低功耗的5.2nW电源管理单元，峰值效率达92.6%，大幅降低了系统静态功耗
• 采用改进的最小能量点跟踪（MEPT）技术，避免传统方案中频繁电压比较和高频时钟带来的额外功耗

🏷 关键词

📄 原文摘要

Xinjian Liu, Sumanth Kamineni, Jacob Breiholz, Benton H. Calhoun, Shuo Li University of Virginia, Charlottesville, VA A self-powered IoT system-on-chip (SoC) reduces power to sub-µW and employs multiple power-management techniques to trade-off ultra-low power (ULP), higher performance, smaller energy harvester footprint, and longer operating lifetime. Minimum Energy Point Tracking (MEPT) [1-4] keeps an SoC operating at the minimum energy point (MEP) to enhance system lifetime. Previous sample-and-hold MEPT schemes need frequent voltage comparisons and a high-frequency clock that increases power [2]. Current-ratio-based MEPT relies on specialized CMOS technology for body-bias tuning

👥 作者与机构

System Performance Scaling, Fast DVFS and Energy, Minimization