標題: A 13.56MHz Wireless Power Transfer System with Dual-Output Regulated Active Rectifier for Implantable Medical Devices
作者: Yang, Fu-Bin
Fuh, Jonathan
Chen, Po-Hung
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: Active rectifier;wireless power transfer;resonant coupling;pulse skip modulation;automatic digital offset compensation;implantable medical devices
公開日期: 1-Jan-2018
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.
URI: http://hdl.handle.net/11536/151034
ISSN: 1548-3746
期刊: 2018 IEEE 61ST INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS)
起始頁: 440
結束頁: 443
Appears in Collections:Conferences Paper