Modeling and analysis of resonant switched-capacitor converters with free-wheeling ZCS

Eli Hamo, Michael Evzelman, Mor Mordechai Peretz

Research output: Contribution to journalArticlepeer-review


This paper introduces a unified modeling methodology to describe and explore the loss mechanism of resonant switched-capacitor converter (SCC) operating in a self-commutation zero current switching (ZCS) mode. The conventional equivalent resistance concept, which assumes a single conduction path of the resonant current, is generalized and extended to model the losses in cases where the resonant current is divided across several conduction loops. The new modeling concept is compatible to describe the losses resulting from resistive elements as well as P-N junction devices, offering a solution for the equivalent resistance. Verification of the concept has been carried out by simulations and experiments on 3-30 W unity, double gain and multiphase Fibonacci resonant SCC with free-wheeling ZCS. A very good agreement is obtained between the theoretical calculations, simulations, and experimental results, well demonstrating model capability to identify the loss contributors in each conduction path.

Original languageAmerican English
Article number6951461
Pages (from-to)4952-4959
Number of pages8
JournalIEEE Transactions on Power Electronics
Issue number9
StatePublished - 1 Sep 2015


  • DC-DC power converters
  • modeling
  • soft switching
  • switched capacitor circuits
  • switched-mode power supply
  • zero current switching

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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