Design and Analysis of a High-Efficiency Single-Input Multiple-Output DC–DC Converter

The growing demand for clean energy sources, such as fuel cells (FCs), necessitates the development of highly efficient and cost-effective power conversion systems. These energy sources often require multiple DC voltage levels to power auxiliary components, but conventional solutions using multiple single-input single-output (SISO) converters suffer from high complexity, increased cost, and poor efficiency due to hard-switching losses. This paper addresses these limitations by proposing a novel single-input multiple-output (SIMO) DC-DC converter. The proposed topology integrates a soft-switching technique to minimize power losses and utilizes a reduced number of switches to simplify the circuit and its control. A detailed analysis of the converter's operating principles is presented, and its performance is validated through a simulation model based on the FLYBACK converter. The results demonstrate that the proposed SIMO converter achieves high efficiency and high voltage gain, offering a superior, cost-effective, and less complex alternative for clean energy applications.