A 69.3% Efficiency, 6.78-MHz Wireless Power Delivery System with 0X/1X Regulating Rectifier and Reconfigurable Power Amplifier

被引：0

作者：

Fuh, Jonathan ^{[1
]}

Yang, Fu-Bin ^{[1
]}

Chen, Po-Hung ^{[1
]}

机构：

[1] Natl Chiao Tung Univ, Inst Elect, Hsinchu, Taiwan

来源：

2019 IEEE ASIAN SOLID-STATE CIRCUITS CONFERENCE (A-SSCC) | 2019年

关键词：

wireless power transfer; regulating active rectifier; resonant coupling; reconfigurable power amplifier;

D O I：

10.1109/a-sscc47793.2019.9056928

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, we present a 6.78-MHz highefficiency wireless power transfer system with a reconfigurable class-D power amplifier and a 0X/1X regulating rectifier. The proposed reconfigurable power amplifier delivers 0.25X/1X output power by adjusting the power-stage configuration to improve system efficiency. To enhance the receiver efficiency, the proposed 0X/1X regulating rectifier with adaptive offset compensation achieves both voltage rectification and voltage regulation in a single conversion stage. The measurement results demonstrate a 90.1% peak receiver efficiency and a 69.3% peak system efficiency. The system provides the load circuit with 5-V regulated output and 250-mW maximum output power.

引用

页码：37 / 38

页数：2