Butzen N., Steyaert M. Advanced Multiphasing Switched-Capacitor DC-DC Converters: Pushing the Limits of Fully Integrated Power Management

Springer, 2020. — 170 p. — ISBN: 978-3-030-38734-1.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.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