Advanced Multiphasing Switched-Capacitor DC-DC Converters: Pushing the Limits of Fully Integrated Power Management [Paperback]

This book gives a detailed analysis of switched-capacitor DC-DC converters that are entirely integrated on a single chip and establishes that these converters are mainly limited by the large parasitic coupling, the low capacitor energy density, and the fact that switched-capacitor converter topologies only have a fixed voltage conversion ratio. The authors introduce the concept of Advanced Multiphasing as a way to circumvent these limitations by having multiple out-of-phase parallel converter cores interact with each other to minimize capacitor charging losses, leading to several techniques that demonstrate record efficiency and power-density, and even a fundamentally new type of switched-capacitor topology that has a continuously-scalable conversion ratio.

• Provides single-source reference to the recently-developed Advanced Multiphasing concept;
• Enables greatly improved performance and capabilities in fully integrated switched-capacitor converters;
• Enables readers to design DC-DC converters, where multiple converter cores are put in parallel and actively interact with each other over several phases to improve their capabilities.

Introduction.- Fully Integrated Switched-Capacitor Fundamentals.- Voltage-Domain Analysis.- Scalable Parasitic Charge Redistribution.- MIMO Switched-Capacitor Converter using Parasitic Coupling.- Stage-Outphasing and Multiphase Soft-Charging.- Continuously-Scalable Conversion Ratio Topologies.- Conclusions.

Nicolas Butzen 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 Intel Corporations Circuits Research Lab (CRL), Hillsboro, OR, USA. His research interests include power management circuits in CMOS and monolithic switchlÓ!