Design and analysis of a new resonant step up/down DC-DC converter

To achieve soft switching technique, converters such as boost, SEPIC and Zeta converters employ more auxillary elements which leads to increase in size and cost. In order to overcome this problem, this paper presents design and analysis of a new resonant step up/down dc to dc converter where all the auxillary elements operate under soft switching condition. The coupling capacitor in the proposed circuit is a resonant capacitor and its capacity becomes much less which tends to decrease in the cost. The current stress is also less which makes the proposed converter to be used in high current applications.