ABSTRACT
This chapter features switched-capacitor (SC) DC-DC converter as a good candidate for the solution. It discusses the needs and trade-offs between different types of converters to motivate the use of switched capacitor DC-DC converter for full integration. The chapter covers circuit techniques that can be used in designing this type of converter in order to improve its power density, efficiency, transient response and input/output voltage range. Basic operation, design analysis and optimization of SC DC-DC converter, as well as specific circuit techniques, including clock level shifter, power switch driver, auxiliary voltage generator, MOS capacitors construction and biasing, parasitic capacitor reduction, and closed-loop control will be discussed. The chapter also provides perspective on a crucial system-level method that co-optimizes power supply with its load to optimally achieve system goals.
