Patent ID: 8854837

Claim:
A boost converter comprising: a transformer including a primary winding receiving an input power and a secondary winding electromagnetically coupled to the primary winding and having a preset turns ratio therewith; a switching unit switching the input power transferred to the primary winding on and off according to a preset duty ratio; a stabilizing unit including an output diode rectifying a power outputted from the secondary winding to thereby stabilize an output power; and a clamping unit clamping a voltage, applied to the output diode, to correspond to a difference between the input power and the output power during a switching on operation of the switching unit, wherein the transformer further includes a leakage inductor connected between a first end of the primary winding and one end of an input power terminal receiving the input power in series and a magnetization inductor parallel-connected to the first end and a second end of the primary winding, and wherein the switching unit includes a switch connected between a connection point, at which the second end of the primary winding and a first end of the secondary winding are connected to each other, and a ground, and wherein the clamping unit includes a first diode having an anode connected to the one end of the input power terminal and a cathode connected to one end of the output diode, and a first capacitor having one end connected to the cathode of the first diode and another end connected to a second end of the secondary winding.