Guest Lecture on Digital SMPS - April 3

Speaker: Dr. Yan-Fei Liu, Professor, Queen's University, Canada
         Digital Control Technologies for Switching Power Converters
Date:         Tuesday, April 3, 2012
Time:        3 p.m.
Location: Bahen Centre for Information Technology, Room BA1200, UofT
here for slides
The purpose of this seminar is to introduce the digital technologies that can improve the performance of switching power converters. Initially, the need for digital control will be discussed. The digital control techniques to improve the steady state and dynamic performance of the switching converter will be discussed. The seminar will discuss some examples as how the digital control technology can be used to improve the performance and therefore, create values to end customers. These examples include auto tuning, charge balance control (sometimes called optimal time control), as well as parallel current mode control.
Yan-Fei Liu (M’94–SM’97) received the B.Sc. and M.Sc. degrees from the Department of Electrical Engineering, Zhejiang University, Hangzhou, China, in 1984 and 1987, respectively, and the Ph.D. degree from the Department of Electrical and Computer Engineering, Queen’s University, Kingston, ON, Canada, in 1994.
From February 1994 to July 1999, he was a Technical Advisor with the Advanced Power System Division, Astec (formerly Nortel Networks, in Ottawa, Canada), where he was engaged in high-quality design, new products, and technology development. Since 1999, he joined Queen’s University. Currently, he is a Professor in the Department of Electrical and Computer Engineering, Queen’s University. His research interests include digital control technologies for dc-dc switching converter and ac-dc converter with power factor correction, current source MOSFET drive technology, topologies and control for voltage regulator application, electromagnetic interference filter design methodologies for switching converters, topologies and controls for high switching frequency, low switching loss converters, modeling, and analysis of core loss and copper loss for high-frequency planar magnetics, and large signal modeling of switching converters. He holds 19 US patents and has published more than 130 technical papers in IEEE Transactions and conferences.
Dr. Liu has been an Associate Editor of IEEE TRANSACTIONS OF POWER ELECTRONICS since 2001. He is a technical program chair for ECCE 2011. He is a chair of Technical Committee of Power Conversion Systems and Components of IEEE Power Electronics Society. He also served as technical program chair for 2010 International Workshop of Power Supply on Chip held in Cork Ireland, as wells as a technical program vice chair for ECCE 2010. He was a recipient of the 2001 Premiere’s Research Excellent Award in Ontario, Canada, and the 1997 Award in Excellence in Technology from in Nortel Networks.