N-switched-capacitor buck converter: topologies and analysis

A series of n-switched-capacitor buck converters are proposed in this article. The most important feature is that they can provide even steeper step-down voltage to satisfy some extreme applications where low voltage and high current are required. They have the advantages of smaller sizes and simpler controlling algorithm compared to cascade buck converter and higher efficiency compared to the quadratic converter reported in former literature. This series can be introduced into on-board aeronautics modern power architectures and solar energy storage systems. Theoretical analysis is supported by simulation and experimental results.