A 13.56MHz Wireless Power Transfer System with Dual-Output Regulated Active Rectifier for Implantable Medical Devices

被引：0
|
作者：
Yang, Fu-Bin [1 ]
Fuh, Jonathan [1 ]
Chen, Po-Hung [1 ]
机构：
[1] Natl Chiao Tung Univ, Inst Elect, Hsinchu, Taiwan
来源：
2018 IEEE 61ST INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS) | 2018年
关键词：
Active rectifier; wireless power transfer; resonant coupling; pulse skip modulation; automatic digital offset compensation; implantable medical devices;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, a 13.56 MHz wireless power transfer system with dual-output regulated active rectifier is developed for implantable medical devices. The rectifier employs pulse-skip modulation (PSM) to regulate two output voltages without using power consuming low dropout regulators (LDOs). The proposed automatic digital offset compensation adjusts both turn-on timing and turn-off timing to compensate the turn-on and turn-off delays of the comparator. The simulation results show that the proposed active rectifier achieves 94% efficiency. The entire wireless power transmission system including power amplifier, resonant tanks, and rectifier, has 67.2% maximum power conversion efficiency (PCE). Compared to the conventional approach with ideal LDOs, 19.2% efficiency improvement is obtained.
引用
收藏
页码：440 / 443
页数：4
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