A canonical switched capacitor DC-DC converter

Abstract

We reconsider a solution to the historical problem in switched capacitor (SC) DC-DC converter synthesis. Specifically, we retackle the problem of constructing an SC two-phase network realizing arbitrary voltage conversion ratio within rational bounds defined. Theoretical foundations are available in our earlier research [3] where a nonconstructive proof of existence was given. We briefly review and comment on known circuit solutions and conclude that they cannot be complete as they lack some general setting in view of the results given in [2] and [3] and versus the consecutive notions of canonical, semicanonical, and subcanonical converters, defined in the current paper. Eventually, and in complementary opposition to [3] we give now alternative constructive proofs by providing circuit examples. Two canonical topologies emerged based on series-parallel and Fibonacci converters.