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ISSCC 2023Session 30 · POWER MANAGEMENT TECHNIQUESPower Management

A 90%-Efficiency 40.68MHz Single-Stage Dual-Output Regulating Rectifier with ZVS and Synchronous PFM Control for Wireless Powering

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📋 论文概要

该论文提出一种用于无线能量传输的单级双输出稳压整流器,工作在40.68MHz,效率达90%。通过零电压开关(ZVS)和同步脉冲频率调制(PFM)控制,在单级中实现AC-DC转换和双路稳压输出,解决了传统两级方案体积大的问题。

💡 主要创新点

核心指标
90% efficiency @ 40.68MHz, dual-output regulation
重要性
发表年份
ISSCC 2023

🏷 关键词

无线能量传输单级整流器零电压开关脉冲频率调制双输出稳压

📄 原文摘要

Wireless power transfer (WPT) is a common non-intrusive approach to power implantable biomedical devices. In the WPT system, a tens-of-milliwatt power receiver (RX) should offer a small form factor and is preferred to provide two or more power rails for supporting various functions. Conventionally, the power RX can be realized by a rectifier for the AC-to-DC conversion followed by a single-inductor multiple-output (SIMO) converter for generating different regulated DC voltages. Although rectifiers with a high resonance frequency (fRES) of 40.68MHz were recently presented to reduce the required size of the off-chip RX coil [1], [2], the power receiver form factor and efficiency could suffer considerably due to the SIMO converter. For example, the receiver with a single-inductor dual-output converter [3] involving five off-chip components (1 inductor and 4 capacitors) to produce two outputs is sizable and its peak efficiency is only 80%.

👥 作者与机构

Ziyang Luo, Jin Liu, Hoi Lee

University of Texas at Dallas, Richardson, TX

分类:Power Management · 年份:ISSCC 2023