Abstract: A synchronous rectifier type SRC for operating in an intermittence mode, which includes: an input power for supplying an input DC voltage; an input-side switching unit; a transformer with a primary winding and a secondary winding; an output-side switching unit for switching; and a gate driving circuit for detecting. According to the synchronous rectifier type SRC, a no-load characteristic can be controlled with an easy scheme and a simple construction. In addition, a simple resistor is added, and thus dead time can be generated. Consequently, it is possible to simply reduce switching loss that may occur in zero voltage switching.

Abstract: Disclosed is a transformer having a multilayered winding structure. The transformer is supplied with alternating current power, and transfers the power to another circuit by electromagnetic induction. The transformer includes a core section having a hollow section, and primary and secondary windings isolated electrically from each other and wound around the core section. Each of the primary and secondary windings has a multilayered structure in which a plurality of metal plates are laminated with gaps therebetween and are coupled to each other at one side ends thereof, and the metal plates of the primary and secondary windings are inserted into and coupled to each other at the other side ends thereof in such a manner that the metal plates of the primary winding are alternately inserted into the gaps of the second windings.

Abstract: Disclosed is a transformer having a multilayered winding structure. The transformer is supplied with alternating current power, and transfers the power to another circuit by electromagnetic induction. The transformer includes a core section having a hollow section, and primary and secondary windings isolated electrically from each other and wound around the core section. Each of the primary and secondary windings has a multilayered structure in which a plurality of metal plates are laminated with gaps therebetween and are coupled to each other at one side ends thereof, and the metal plates of the primary and secondary windings are inserted into and coupled to each other at the other side ends thereof in such a manner that the metal plates of the primary winding are alternately inserted into the gaps of the second windings.

Abstract: Disclosed is a synchronous rectifier type SRC for operating in an intermittence mode, which includes: an input power for supplying the input DC voltage; an input-side switching unit for switching four input-side switching devices to convert the input DC voltage to AC voltage, the input-side switching unit being connected to the input power, an LC resonance circuit for storing energy in a resonance inductor and a resonance capacitor by means of LC resonance, and outputting resonance voltage, the LC resonance circuit being connected to the input-side switching unit; a transformer with a primary winding and a secondary winding for converting the resonance voltage to voltage of a predetermined level according to a turn ratio to generate secondary voltage, and transferring the secondary voltage through the secondary winding, the primary winding being connected to the LC resonance circuit; an output-side switching unit for switching four output-side switching devices to convert the secondary voltage to the output D