A Ring Type Step-Up Switched-Capacitor dc-dc Converter that Has Low Inrush Current at Start-Up and Low Current Ripple In the Steady State

摘要

A novel type dc-dc converter is presented that con- sists of n ring-shaped capacitors connected by switches. The proposed method is totally different from conventional Switched capacitor (SC) transformers. Although converters Using SC do not contain both inductors and resistors, and The magnetic field generated is extremely slight, they have The following disadvantages: (1) The inrush current is large, (2) the input and output current ripples are large, and (3) the driving circuit becomes complex because a lot of floating switches are needed.