Derivation of Complete Family of Multi-Output Configurations Including Voltage-Source-Mode and Current-Source-Mode Converters

Abstract

This paper derives a complete family of interconnected dc-dc converters for single-input multi-output applications. In addition to conventional voltage-source-mode (VSM) converters, the less known current-source-mode (CSM) converters are used to complete the set of configurations that cover all possible input types, load types and connection styles. A total of sixteen configurations are derived and compared against their power sharing capability, extended flexibility, mutual effects among interconnected modules, basic control requirements and load characteristics. A two-stage configuration consisting of a VSM converter and two CSM converters is presented as an example to drive light-emitting-diodes (LEDs) under high input voltage conditions.