A 6.78MHz Single-Stage Regulating Rectifier with Dual Outputs Simultaneously Charged in a Half Cycle Achieving 92.2% Efficiency and 131mW Output Power

📋 论文概要

本文提出一种6.78MHz单级调节整流器，能够在半周期内同时为双输出充电，适用于植入式设备的无线功率传输。该设计解决了多输出电压需求下的效率问题，实现了92.2%的峰值效率。

💡 主要创新点

• 提出单级调节整流器架构，在半周期内同时为两个输出充电，无需额外级联或复杂控制。
• 通过优化整流器拓扑和调节机制，在6.78MHz工作频率下实现92.2%的高效率。

🏷 关键词

📄 原文摘要

IBM T. J. Watson Reseach Center, Yorktown Heights, NY 1 2 Wireless power transfer to implanted devices is an elegant solution that can obviate the need for batteries [1–5]. As more functions are implemented in the implanted devices, more than one output voltages are typically requested for the optimal performance [6]. For example, a low output voltage (VOUT2) is used for biopotential recording whereas a high output voltage (VOUT1) is used in the back-end circuitry for neurostimulation. The requirements on VOUT1 and VOUT2 are different [7]. The front-end recording circuitry requires a stable and accurately regulated VOUT2 whereas the back-end stimulation circuitry necessitates a high bandwidth to support a high load current at VOUT1. An obvious design is to use two stages comprising a rectifier followed by a dual-output regulator [8, 9]. On the other hand, the single-stage dual-output (SSDO) design [10–15] is

👥 作者与机构

Quanrong Zhuang1, Junyi Sun1, Bo Li1, Jie Lu1, Xin Zhang2, Yi Shi1, Hao Qiu1

Nanjing University, Nanjing, China