Boost and Buck Type Series Resonant Converter and Boost and Buck Control Method in the same Converter

摘要

The present invention relates to a series resonant DC / DC converter having a step-up and step-down function and a step-up and step-down control method in the converter.;The series resonant DC / DC converter having a step-up and step-down function of the present invention includes a powering mode for storing energy in the series resonator unit and transferring the sum of the stored energy and the input voltage to the secondary side for step-up and For the step-down, the first to fourth switch and the primary side of the full bridge to which the anti-parallel diodes are connected, respectively, to periodically repeat the free resonance mode for interrupting the energy storage of the series resonator and transferring the already stored energy to the secondary side. The switching of the fifth switch for controlling the on / off of the transformer for transmitting the voltage to the secondary side. As a result, the boosted and stepped down voltage is output to the output terminal on the secondary side.;Full Bridge, Resonant Current, Series Resonance, DC / DC Converter, Rectifier