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Integrated digital controllers for dc-dc converters: overview of some control issues

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Abstract:
Integrated Digital controllers for high-frequency Switched-Mode Power Supplies have been receiving particular attention from the specialized community over the last years for computer/telecom/consumer applications. Advantages of IC digital controllers include compensator versatility and programmability, integration enhancements at the silicon level (scaling, hardware description language design, faster time-to-market) and the possibility of extending the role of the digital system to more complex functions such as diagnostics, health monitoring, auto-tuning and communication features. Feasibility of fully-integrated hard-wired digital controllers has been shown recently. At the same time, the achievable closed-loop control bandwidth has shown some limitations not present in the world of analog control. Within this scenario, the presentation will cover a brief overview of some recent control issues including: multisampling, mixed-signal architectures, autotuning techniques for SMPS, etc....

Type of Seminar:
IfA Seminar
Speaker:
Prof. Paolo Mattavelli
University of Padova
Date/Time:
Nov 23, 2007   11:00
Location:

ETA F5
Contact Person:

Prof. M. Morari
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Biographical Sketch:
Paolo Mattavelli received the M.S. (with honors) and Ph.D. degrees in electrical engineering from the University of Padova, Padova, Italy, in 1992 and 1995, respectively. From 1995 to 2001, he was a Researcher at the University of Padova. In 2001 he joined the Department of Electrical, Mechanical and Management Engineering (DIEGM) of the University of Udine, where he was an Associate Professor of Electronics from 2002 up to 2005. He was responsible of the Power Electronics Laboratory of the DIEGM at the University of Udine, which he founded in 2001. In November 2005, he joined the Department of Technology and Management of Industrial Systems (DTG), University of Padova, Vicenza. His major fields of interest include analysis, modeling, and control of power converters, digital control techniques for power electronic circuits, active power filters, and power quality issues. Dr. Mattavelli currently serves as an Associate Editor for the IEEE TRANSACTIONS ON POWER ELECTRONICS, Technical Review Chairman for the Industrial and Power Conversion Committee (IPCC) of the IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, and Member-at-Large of the PELS Adcom.