Floating Gate Power Supplies for Flying Capacitor Multilevel Converters

Abstract

There is a possibility of the realization of high output power density converters by introducing flying capacitor multilevel topologies. However, as the number of the levels increases, the number of circuit components will exceed the practical limit of the implementation. Thus, from the practical viewpoint, the main circuit and related gate drive circuits including floating gate power supplies should be integrated. In this letter, charge pump circuits, already proposed for conventional 2-level converters, are extended to the floating gate power supplies for the flying capacitor multilevel converters.