Synthesis of switched-capacitor power converters: An iterative algorithm

Fibonacci limit for the achievable conversion gains of switched-capacitor power converters (SCPC) is known, but a simple synthesis algorithm is not available yet. In this paper, a simple iterative algorithm for the exhaustive synthesis of 2-phase SCPC topologies is presented. The main advantages of this approach are: (1) it is circuit-design oriented, and (2) it can be automated due to its iterative nature. In the iterative approach, topology synthesis results of (n-1) floating capacitors are used to synthesize topologies of n floating capacitors. In addition, an intuitive proof of the Fibonacci limit is given.