A 1.1nW Energy Harvesting System with 544pW Quiescent Power for Next-Generation Implants

📋 论文概要

该论文提出了一款用于下一代植入物的能量收集系统，能够从哺乳动物耳蜗内电位（70-100mV）中提取能量，总功耗仅1.1nW，静态功耗低至544pW。解决了超低功率植入设备在有限生物电位下高效获取能量的难题。

💡 主要创新点

• 实现了极低静态功耗（544pW）的能量收集电路，适合nW级微弱生物能量源。
• 优化了升压转换器和电源管理架构，可在70-100mV输入电压下高效工作，整体系统功耗仅1.1nW。

🏷 关键词

📄 原文摘要

Konstantina M. Stankovic3,4, Anantha P. Chandrakasan1 Massachusetts Institute of Technology, Cambridge, MA, University of California, San Diego, La Jolla, CA, 3 Massachusetts Eye and Ear Infirmary, Boston, MA, 4 Massachusetts General Hospital, Harvard Medical School, Boston, MA, * Now at Texas Instruments, Dallas, TX, 1 2 A wireless sensor that is powered from the endocochlear potential (EP), a 70-to100mV bio-potential inside the mammalian ear, has been demonstrated in [1]. Due to the anatomical size and physiological constraints inside the ear, a maximum of 1.1 to 6.25nW can be extracted from the EP. The nanowatt power budget of the sensor gives rise to unique challenges with power conversion efficiency and quiescent current reduction in the power management unit (PMU). While [1] presents the system aspects of the biomedical harvesting including the biologic interface and system measurements, this work presents

👥 作者与机构

Saurav Bandyopadhyay1,*, Patrick P. Mercier1,2, Andrew C. Lysaght3,