报告时间：2016年9月21日(星期三）上午9:30

报告地点：逸夫科教楼1117

报 告 人：程林 博士

工作单位：香港科技大学

举办单位：电子科学与应用物理学院/微电子学院

个人简介：

Dr. Lin Cheng (程林) received the B.Eng degree from Hefei University of Technology, Hefei, China, the M.S. degree from Fudan University, Shanghai, China, and the Ph.D. degree from The Hong Kong University of Science and Technology (HKUST), Hong Kong, China, in 2008, 2011 and 2016, respectively. He is currently a Postdoctoral Research Associate with the Department of Electronic and Computer Engineering, HKUST. He was an Intern Analog Design Engineer with OmniVision, Shanghai, China, from December 2010 to July 2011, and with Broadcom Corporation, San Jose, CA, USA, from September 2015 to March 2016, respectively. His research interests include power management circuits and systems, wireless power transfer circuits and systems, switched-inductor power converters, and low dropout regulators. He has published more than 20 papers and patents in international journals and conferences including ISSCC, JSSC and TPEL. He is a reviewer of multiple journals and conferences. Dr. Cheng is a recipient of the IEEE Solid-State Circuits Society Pre-Doctoral Achievement Award 2014-2015 and the HKUST School of Engineering PhD Fellowship Award 2014-2015.

报告摘要：

Wireless power transfer (WPT) using near-field magnetic coupling that pioneered by Tesla has attracted extensive attention recently. It has a broad range of applications such as biomedical implants and battery chargers of portable electronic devices and electric vehicles. In this talk, current research and development of wireless power receivers will be presented. First, design challenges of active rectifiers and state-of-the-art solutions will be reviewed. An adaptive on/off delay compensation technique will be introduced. By adding two feedback paths to the active diodes, the on/off delays are accurately compensated for under all conditions by the proposed technique. Second, a new receiver topology that uses a 3-level reconfigurable resonant regulating (R3) rectifier will be discussed. It will be shown that the proposed receiver can greatly improve power conversion efficiency and reduce cost and volume of the system by realizing one-stage power conversion plus regulation.