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Abstract
A new isolated current-fed pulse width modulation dc-dc converter-current-fed dual-bridge dc-dc converter-with small inductance and no dead time operation is presented and analyzed. The new topology has more than 3times smaller inductance than that of current-fed full-bridge converter, thus having faster transient response speed. Other characteristics include simple self-driven synchronous rectification, simple housekeeping power supply, and smaller output filter capacitance. Detailed analysis shows the proposed converter can have either lower voltage stress on all primary side power switches or soft switching properties when different driving schemes are applied. A 48-V/125-W prototype dc-dc converter with dual output has been tested for the verification of the principles. Both simulations and experiments verify the feasibility and advantages of the new topology

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http://ieeexplore.ieeexpl/freeabs_all.js...er=4118332

its an ieee article