|
Welcome to the new IEEE Solid State Circuit Society in Our seminars are open to everyone. It is our hope to continue to provide
quality seminars as well as networking opportunities for members in the
greater Your comments or suggestions for a better SSCS are greatly appreciated. |
Title: "Power Management for Portable Microsystems"
Abstract:
Power management for portable low
power systems has special needs: generation of multiple supply voltages,
miniaturization and high efficiency at low currents. The research activity on
this area often aims at system with all the components on package and
solutions that share the inductor for obtaining multiple supply voltages.
This presentation deals with the above point and focuses on design
methodologies to obtain multiple outputs and to use of very small inductors.
The four possible schemes, buck, boost, and inverting or non-inverting
buck-boost, are considered. The key specific problems related to the issue
are the inductor current switching scheme, the multiple-loops control, the
suitable driving of power switches and, accordingly, the converter power
efficiency. All the issues are discussed in details. Moreover, design
examples of devices integrated with CMOS technologies and the experimental
results are presented. The
miniaturization of dc-dc converter requires using very high switching
frequency. This must be achieved while maintaining high efficiency, better
than the one of a linear converter. The circuit solution discussed in the
tutorial foresee a non conventional loop control that enable operation up to
120-MHz switching frequency with peak power efficiency of 87% for 75% duty
cycle and 93% at 60 MHz. The results are confirmed by experimental
measurements. New directions,
favored by advancement in packaging that enable 3D and pushed by new needs,
like the optimal conversion of solar energy, are briefly discussed. Speaker:
Prof. Franco Maloberti,
University of Pavia Biography:
Prof.
Maloberti was the recipient of the XII Pedriali Prize for his technical and scientific
contributions to national industrial production, in 1992. He was co-recipient
of the 1996 Fleming Premium, IEE, the best Paper award, ESSCIRC-2007, and the
best paper award, IEEJ Analog Workshop-2007. He received the 1999 IEEE CAS
Society Meritorious Service Award, the 2000 IEEE CAS Society Golden Jubilee
Medal, and the IEEE Millenium Medal. Dr. Maloberti was Vice-President, Region 8, of the IEEE
Circuit and Systems Society (1995-1997), Associate Editor of IEEE-Transaction
on Circuit and System-II 1998 and 2006-07, President of the IEEE Sensor
Council (2002-2003), member of the BoG of the
IEEE-CAS Society (2003-2005) and Vice-President, Publications, of the IEEE
CAS Society (2007-2008). He is Distinguished Lecturer of the Solid State
Circuit Society and Fellow of IEEE. Date:
Tuesday, April 27, 2010 Time:
11:30am,
Social/Refreshments Place:
The
address of 13900 North Central Expressway Address:
13900 North Central Expressway Directions:
From the North: Take 75 south and exit 22
toward From the South: Take 75 north and exit 23
toward Spring Valley and keep right. After the signal light of the After entering the Texas Instrument, the Just in case, you can find the http://www.healthclubdirectory.com/health_clubs/completeListing/TX/Texas/Dallas/5763 SSCS Webpage:
http://ewh.ieee.org/r5/dallas/sscs/ Contact:
|