Single-Switch Resonant Soft-Switching Ultra-High Gain DC-DC Converter With Continuous Input Current

An ultra-high gain DC-DC converter with single-switch structure is introduced in this paper. Full soft-witching provided by simultaneous use of quasi-resonant performance one resonant tank and leakage inductance a three-winding coupled inductor (CI). Adopting the secondary tertiary windings CI separated voltage multiplier cells enables to provide gain. The reverse recovery problem resolved thanks quasi zero current switching nearly all diodes, especially output diode because second tank, so total electromagnetic interference significantly reduced. Continuous input low ripple expands application proposed converter, renewable energy applications. Steady-state design considerations are analyzed thoroughly compared recently converters establish its merits. Experimental results 200 W prototype given validate analysis performance.