Fully Integrated Switched-Capacitor PMU for IoT Nodes

Ricardo Madeira received his M.Sc. and Ph.D. degrees in Electrical and Computer Engineering (ECE) from the NOVA Faculty of Science and Technology (NOVA FCT), Lisbon, Portugal, in 2015 and 2021. He is also a researcher at the Centre of Technology and Systems (CTS) since 2015, where he has been involved in the design of mixed-signal integrated circuits (ICs) in nanoscale CMOS technology, namely, the design and optimization of a fully integrated Power Management Unit (PMU) with Switched Capacitor (SC) DC-DC converters. Since October 2021, he has been an RF design engineer with Koala Tech, where he has been involved in the design of a multi-stage RF power amplification scheme and RF power combination.  He has participated in national and international research projects in the last years and published 3 journal articles, 10 conference articles (one Best Paper Award), and one patent. João Pedro Oliveira received the M.Sc. and  Ph.D degrees in Electrical and Computer Engineering from Instituto Superior Técnico- University of Lisbon, Portugal (1996) and NOVA Faculty of Science and Technology – Nova University of Lisbon, Portugal (2010), respectively. At the present, he holds the position of Professor of Integrated Microelectronics in the Department of Electrical Engineering of Nova University of Lisbon. He is also a Senior Researcher member of the Centre of Technology and Systems-CTS where he has been involved in the research and design of mixed-signal integrated circuits in nanoscale CMOS technology, for low power RF and sensing applications. Additionally, his professional background includes more than 5 years of experience in the telecommunications industry and the co-foundation of two companies in the field of smart sensorial interactive systems and efficient RF power amplification. He holds 3 patents, one book and has published in international scientific journals and leading conferences. Nuno Paulino graduatedfrom Instituto Superior Técnico (IST), Lisbon, Portugal, in 1992. He received the M.Sc. degree from the Technical University of Lisbon, Portugal, in 1996 and the Ph.D. degree from the Universidade Nova de Lisboa, Portugal, in 2008. He has been with the Department of Electrical Engineering (DEE) of the Faculdade de Ciências e Tecnologia (FCT), Universidade Nova de Lisboa (UNL), since 1999. Since 1999 he has been also working as a Senior Researcher of the Centre of Technology and Systems at UNINOVA. In 2003 he cofounded ACACIA Semiconductor, a Portuguese engineering company specialized in high-performance data converter and analog front-end products, acquired by S3 in 2007. From 1996 to 1999 he worked as Analog Design Engineer at Rockwell Semiconductor, USA. His scientific interests are in the areas of the design of CMOS circuits for UWB sensing systems, analog and discrete time signal processing, data-converters, self-testing and self-calibrating techniques, switched-capacitor circuitsfor power converters and optimization tools for assisting the design of analog circuits.

• Introduction.- Switched-Capacitor DC-DC Fundamentals.- Fully Integrated SC DC-DC Converters State of the Art.- Fully Integrated SC DC-DC Converters Performance Enhancement Techniques State of the Art.- Design of a Fully Integrated Power Management Unit Prototype.- Fully Integrated Power Management Unit Layout, Simulation and Measurements Results.- Conclusion.