Batteryless Sub-nW Cortex-M0+ Processor with Dynamic Leakage-Suppression Logic

📋 论文概要

该论文提出了一种无需电池的亚纳瓦Cortex-M0+处理器，采用动态泄漏抑制逻辑，在极低功耗下实现计算能力，解决了无线传感器节点中电池续航和能量采集的挑战。

💡 主要创新点

• 提出动态泄漏抑制逻辑，在亚阈值电压下有效降低静态功耗，实现sub-nW级功耗。
• 设计无电池架构，直接从能量采集源获取能量，无需二次电池，提升系统寿命和微型化潜力。

🏷 关键词

📄 原文摘要

Recent low-voltage design techniques have enabled dramatic improvements in miniaturization and lifetime of wireless sensor nodes [1-3]. These systems typically use a secondary battery to provide energy when the sensor is awake and operating; the battery is then recharged from a harvesting source when the sensor is asleep. In these systems, the key requirement is to minimize energy per operation of the sensor. This extends the number of operations on one battery charge and/or reduces the time to recharge the battery between awake cycles. This requirement has driven significant advances in energy efficiency [12] and standby power consumption [3]. Batteries suffer from limited endurance (e.g., 5k discharge cycles [4] limiting lifetime to 3.5 months with a 30 min wakeup period) and scalability challenges in the sub-5mm range due to sealing requirements [5]. This paper therefore focuses on a batteryless sensor system that operates directly from the energy

👥 作者与机构

Wootaek Lim, Inhee Lee, Dennis Sylvester, David Blaauw

University of Michigan, Ann Arbor, MI