A 22V Compliant 56µW Active Charge Balancer Enabling 100% Charge Compensation even in Monophasic and 36% Amplitude Correction in Biphasic Neural Stimulators

📋 论文概要

该论文提出一种用于功能性电刺激(FES)的22V耐压、56µW功耗的主动电荷平衡器。它能够在单相刺激下实现100%电荷补偿，并支持36%的幅度校正，从而避免电荷积累和电极腐蚀。

💡 主要创新点

• 采用主动电荷平衡机制，即使在单相刺激波形下也能完全补偿电荷，解决了传统双相刺激因PVT失配导致的电荷不平衡问题。
• 在22V高压兼容下实现仅56µW的超低功耗，显著提升植入式刺激器的能效与安全性。

🏷 关键词

📄 原文摘要

Cluster of Excellence, Freiburg, Germany 1 2 Functional electrical stimulation (FES) is a technique that stimulates nerves by electrical charge, but carries the risk of charge accumulation, voltage pile-up, electrode corrosion and finally tissue destruction. Using biphasic stimulus current pulses, the main transferred charge is compensated by reversing the current direction. However, due to PVT variations in integrated circuits mismatch in the biphasic waveform always occurs. Charge balancing (CB) has thus become an integral part of FES to ensure safe chronic stimulation [1]. This paper presents a CMOS integrated, 22V compliant active charge balancer accomplishing “cause and consequence” based compensation, ensuring both instantaneous and long-term balanced condition. By inherently incorporating an

👥 作者与机构

Natalie Butz1, Armin Taschwer2, Yiannos Manoli1,2,3,

Matthias Kuhl1,3 University of Freiburg - IMTEK, Freiburg, Germany, Hahn-Schickard, Villingen-Schwenningen, Germany, 3 BrainLinks-BrainTools