I. Introduction
In the past years, the demand for high reliable, available and efficient power systems for specific applications encouraged the use of output parallel-connected DC-DC converters on power supply architectures for load current sharing [1]. On the present days, the rapid growth of more demanding loads such as telecommunication systems, distributed computer servers and uninterruptible power supplies strengthened such topic of research. A distributed power system (DPS), composed of multiple DC-DC converters connected in parallel, offers several advantages in comparison to a centralized solution. Among these benefits are the following: better thermal management, physical size reduction of units, reduced EMI and harmonics, modularity achieved by standardized design, redundancy and improved reliability [2].