Systematic Synthesis of Step-Down Switched-Capacitor Power Converter Topologies

Dennis Øland Larsen*, Martin Vinter, Ivan Harald Holger Jørgensen

*Corresponding author for this work

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In this paper an algorithm for finding two-phase step-down switched-capacitor converter topologies is presented. The output stage is considered as a number of nodes, namely ground, input, output, and the top and bottom plates of the capacitors. Finding all switch placements between these nodes yields a complete database of possible topology implementations. The algorithm is applied for the case of one to four flying capacitors. This result is useful in the design of multi-topology gearbox output stages where several topologies are implemented. Having a database of all possible implementations allows for designing optimal output stages based on a number of possible performance metrics. All parts of the synthesis method is automated. In the case of four flying capacitors a total of 8.40 billion topologies are found.
Original languageEnglish
JournalI E E E Transactions on Circuits and Systems. Part 2: Express Briefs
Issue number5
Pages (from-to)863-867
Number of pages5
Publication statusPublished - 2019


  • Dc-dc converter
  • Switched capacitor converter
  • Switched-mode power supply
  • Topology synthesis.


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