Patent ID: 9001533
Filing Date: 2015-04-07
Classification: H02M,Y10S

Abstract:
1. A power supply device converting an input voltage into an output power according to a switching operation of a power switch, the power supply device comprising: a feedback circuit which includes a first diode connected to a first sensing voltage corresponding to an output voltage of the output power, a second diode connected to the output voltage, and a resistor in series with the second diode, the feedback circuit generates a feedback voltage by using a voltage generated from a current passing through a conducted diode of the first and the second diodes; and a switch controller controlling the switching operation of the power switch depending on the feedback voltage, wherein a cathode of each of the first to the second diodes is electrically connected to a first contact point, the first sensing voltage is inputted to an anode of the first diode, and the output voltage is inputted to an anode of the second diode.