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W10: Switched Capacitor DC-DC converters: from niche to work horse in power management!


14:00 - 17:30

room 1-2


Tom Van Breussegem


Over the past fifteen years Switched-Capacitor (SC) DC-DC Converters have grown from a niche circuit used in memories and local low power local supply domains to a work horse in power management. Thanks to multiphase interleaving, gearbox topologies, etc.,  the original constraints of the topology have been overcome and have leveraged a whole new field of application. Up to the level that a SC DC-DC converter can be used as a full blown standalone Power Management IC (PMIC). SC DC-DC converters power medical implants, mobile devices  and CPU’s. This workshop aims to discuss the state of the art techniques that have created this leverage, discuss the productisation aspects of SC-DC-DC and present the latest evolutions in high power monolithic SC DC-DC converters.


SC DC-DC Converters: A quick-start design guide for single and gearbox topologies

Aki Sarafianos (ICsense)

High performance integrated SC  DC-DC Converters

Nicolas Butzen (Intel)

System Level Improvements by SC DC-DC Converters

Tim Thielemans  (ICsense)

Productization of SC DC-DC Converters

Hans Meyvaert (ex- Lion Semiconductor/ ex-Cirrus Logic / Power Conversion Contractor)


Athanasios Sarafianos

Athanasios Sarafianos (S'13) was born in Jette, Belgium, on 30 December 1988. In 2010 he received the M.S. degree in electronics from Groep T Leuven Engineering College, Belgium, and in 2012 the M.S. degree in electrical engineering (microelectronics) from the Katholieke Universiteit Leuven, Belgium. In 2017, he received the phd degree in electrical engineering at the ESAT-MICAS Laboratories, on the topic of wide input range and two-quadrant switched-capacitor DC-DC converter.

Since 2018, he’s been working at ICsense as a senior analog design engineer. His interests lie in power management, DC-DC converters and low-power sensor front-ends.


Tim Thielemans

Tim Thielemans received the B.Sc. and the M.Sc. degree in Electrical Engineering from KU Leuven, Heverlee, Belgium, in 2014 and 2016, respectively. In 2023, he received the PhD degree from the ESAT-MICAS research group at KU Leuven for his research in the field of fully integrated power management in baseline CMOS and GaN. In 2022, he joined the analog design team of ICsense, Leuven, Belgium.

Hans Meyvaert

Hans Meyvaert (S’09) was born in Sint-Truiden, Belgium, in 1985. He received the M.Sc. degree in electrical engineering from the Katholieke Universiteit Leuven (KU Leuven), Heverlee, Belgium, in 2009. He received his PhD from KULeuven in 2016 on integrated power management circuits in CMOS.,Mr. Meyvaert was awarded 3rd place in the 2014 Broadcom Foundation University Research Competition for his work on a fully integrated AC-DC converter. He joined Lion Semiconductor and later Cirrus Logic. He’s now active as a self-employed consultant in power electronics.

Nicolas Butzen

Nicolas Butzen (Member, IEEE) was born in Wilrijk, Belgium, in 1990. He received the M.Sc. and Ph.D. degrees in electrical engineering from KU Leuven, Heverlee, Belgium, in 2013 and 2018, respectively.,He is currently a Power Delivery Research Scientist with the Intel Corporation’s Circuits Research Laboratory (CRL), Hillsboro, OR, USA. His research interests include power management systems for CMOS technologies and highly integrated hybrid and capacitive dc–dc converters.,Dr. Butzen was a recipient of several awards for his innovative work, including Third and First Place at the SSCS Benelux Chapter Chip Design Contest, from 2016 to 2017 and from 2017 to 2018, respectively, the ISSCC 2016 Distinguished-Technical-Paper Award, the ISSCC 2017 Jan Van Vessem Award for Outstanding European Paper, and the IEEE SSCS 2017–2018 Predoctoral Achievement.

Tom Van Breussegem

Tom Van Breussegem was born in Zottegem, Belgium, on April 10, 1982. He received the Ph.D. degree in electronics from Katholieke Universiteit Leuven in 2012, working on monolithic CMOS integrated DC-DC converters. He was an Intern at IMEC in 2003, and at AnSem in 2006. In 2008, he was granted a scholarship by the Flemisch Institute for Innovation, Science and Technology. In April 2012, he joined ICsense, Heverlee, an IC-design house specialized in power management, high voltage, and sensor interfacing. He is currently Analog Team Lead at ICsense.

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