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ISSCC 2026Session 16 · ENERGY HARVESTING, PIEZO AND CHARGERSPower Management

A Parameter-Free Runtime-Energy-Loss Optimizer Achieving 2.15% Error in Energy-Recycling Duty-Cycled Systems

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📋 论文概要

该论文提出了一种无需预定义参数的运行时能量损耗优化器,用于能量回收型占空比系统。通过利用3电平转换器将输出电容能量回收至飞电容,实现了与最优能量损耗偏差小于2.15%,并增强了对电池电压和漏电流变化的鲁棒性。

💡 主要创新点

核心指标
15nA静态电流,80%效率@1μA负载电流,能量损耗节省高达60%
重要性
发表年份
ISSCC 2026

🏷 关键词

能量回收占空比系统能量损耗优化

📄 原文摘要

Abstract This work proposes a predefined-parameter-free runtime-Eloss optimizer for energy-recycling duty-cycled systems. By leveraging a 3-level converter to recycle output-capacitance energy to the flying capacitor, it achieves <2.15% deviation from optimal Eloss with increased robustness against battery voltage and leakage current variations. It achieves a quiescent current of 15nA and an 80% efficiency at a 1#A load current, while eliminating sub-harmonic oscillation. It saves energy loss by up to 60% across a wide range of time spent in the sleep state. Wearable devices impose stringent constraints on volume and cost, driving the use of lowprofile batteries and advanced power management techniques to extend battery life. These techniques include low-duty-cycle operation and power gating (PG) in the loading microprocessor (#P). In addition, high power conversion efficiency (PCE) under light-load

👥 作者与机构

Jianxin Yang, Rui P. Martins, Mo Huang

University of Macau, Macau, China

分类:Power Management · 年份:ISSCC 2026