Resonant switched-capacitor converters for chip-scale power delivery: Modeling and design

There is an increasing need for power management systems that can be fully integrated in silicon to reduce cost and form factor in mobile applications, and provide on-chip voltage regulation for high-performance digital systems. Switched-capacitor (SC) converters have shown tremendous promise in this regard due to favorable device utilization and scaling trends, and the emergence of high-density silicon-compatible capacitor technologies. Resonant switched-capacitor (ReSC) converters show similar promise as they benefit from the same architectures, scaling, and component trends, but also from ongoing improvements in silicon-integrated magnetic components. In this work, we explore the design and optimization of ReSC step down topologies, based on representative capacitor technologies, CMOS device parameters, and a range of possible integrated magnetics specifications.