A Power-Management ASIC with Q-Modulation Capability for Efficient Inductive Power Transmission

📋 论文概要

该论文提出了一种具有Q调制能力的电源管理ASIC，用于提高电感耦合无线功率传输的效率，解决了接收线圈负载变化导致效率下降的问题。

💡 主要创新点

• 1. 提出Q调制技术，动态调整接收线圈的品质因数，以优化不同负载下的功率传输效率。
• 2. 设计并集成了完整的电源管理ASIC，实现了高效的能量转换和稳定的功率输出。

🏷 关键词

📄 原文摘要

Georgia Institute of Technology, Atlanta, GA 1 2 A wide variety of applications can benefit from near-field wireless power transfer using coupled inductive links, such as wireless sensors and implantable microelectronic devices. The use of inductive power transmission is expected to see an explosive growth over the next decade as engineers try to cut the last cord from mobile electronics, small home appliances, and even electric vehicles [1]. The inductive link power transfer efficiency (PTE) is highly dependent of the loading of the receiver (Rx) coil, referred to as RL. As shown in Fig. 12.7.1a, magnetic resonance-based power transmission in the form of a 3-coil link has been proposed to maximize PTE for any given RL by transforming it to an optimal load, using k34 variable [2,3]. Alternatively, an off-chip matching circuit has been used to transform RL [4]. However, these methods need either an additional coil

👥 作者与机构

Mehdi Kiani1, Byunghun Lee2, Pyungwoo Yeon2, Maysam Ghovanloo2

Pennsylvania State University, University Park, PA,