A Family of DC–DC Converters Deduced From Impedance Source DC–DC Converters for High Step-Up Conversion

A family of dc-dc converters based on impedance source dc-dc converters is presented. The scheme of the proposed family is that the switch of impedance source dc-dc converters is moved forward. The derived topologies are suitable for high-voltage step-up ratio. Compared to the typical impedance source dc-dc converters, the presented topology dramatically reduces the voltage stresses on the power semiconductor devices. In addition, the passive lossless clamped circuit is introduced into the proposed family to restrict the peak voltage of the main switch. This paper presents an analysis of the converter and results from a prototype converter to validate the topology's performance.