SSCS CICCedu 2019 - Building Li-ion-compatible DC-DC Converters in Scaled CMOS - by Patrick Mercier скачать в хорошем качестве

SSCS CICCedu 2019 - Building Li-ion-compatible DC-DC Converters in Scaled CMOS - by Patrick Mercier

Abstract: Modern mobile and Internet-of-things (IoT) devices are typically implemented with a collection of scaled-CMOS SoCs, which for energy-efficiency reasons, tend to operate at 0.5–1V. However, such devices are typically powered by Li-ion batteries, which provide voltages on the order of 2.8–4.2V. As a result, dc–dc converters must be placed between the battery and scaled CMOS SoC loads. Since most scaled CMOS processes do not support transistors with sufficiently high voltage rating to directly process Li-ion battery voltages, dc-dc converters are typically implemented in separate high-voltage chips, which can occupy large area and increase packaging complexity. To mitigate this issue, recent work has attempted to integrate the dc-dc converter directly into the scaled CMOS SoC. Since there are no high voltage devices available, circuit solutions involving stacking of power transistors in various manners are required. This presentation reviews the challenges of processing high voltages in scaled CMOS processes, and discusses buck, switched-capacitor, and hybrid multi-level topologies that offer a pathway towards achieving efficient Li-ion-compatible dc-dc conversion directly in scaled CMOS. Biography: Patrick Mercier is an Associate Professor of Electrical and Computer Engineering and co-founder/co-director of the Center for Wearable Sensors at UC San Diego. He received his B.Sc. degree from the University of Alberta, Canada, in 2006, and the S.M. and Ph.D. degrees from MIT in 2008 and 2012, respectively. Prof. Mercier has received numerous awards, including the NSF CAREER Award in 2018, the Biocom Catalyst Award in 2017, the UCSD Academic Senate Distinguished Teaching Award in 2016, the DARPA Young Faculty Award in 2015, the Beckman Young Investigator Award in 2015, The Hellman Fellowship Award in 2014, the International Solid-State Circuits Conference (ISSCC) Jack Kilby Award in 2010, amongst others. He has published over 110 peer-reviewed papers in venues such as Nature Biotechnology, Nature Communications, ISSCC (13 papers in the last six years), Advanced Science, and others. He is an Associate Editor of the IEEE Transactions on Biomedical Circuits and Systems and the IEEE Solid-State Circuits Letters, is a member of the ISSCC, CICC, and VLSI Technical Program Committees, and has co-edited two books: Power Management Integrated Circuits (CRC Press, 2016), and Ultra-Low-Power Short-Range Radios (Springer, 2015). His research interests include the design of energy-efficient mixed-signal systems, RF circuits, power converters, and sensor interfaces for wearable, medical, and mobile applications.