Abstract: A power converter may include an inductor, a switch turned on or turned off according to a control signal to control the flow of a current flowing through the inductor, and a control unit for outputting the control signal to turn on or turn off the switch by integrating a current flowing through the switch to compare the integrated current with the size of a preset reference voltage. The power converter and a driving method for the same may reduce errors of current control and have a simple structure.

Abstract: Disclosed herein are a signal generator having high efficiency and a PFC converter using the same. According to an exemplary embodiment of the present disclosure, a PFC converter includes: a converter unit including an inductor and a switch which switches a flow of driving current in the inductor by a turn on or turn off operation; and a signal generator outputting a turn on signal or a turn off signal switching the switch and when a magnitude of the driving current is smaller than a preset value, keeping the turn on signal long to enable the magnitude of the driving current to reach the preset value.

Abstract: A detector having an offset cancellation function, and a power factor correction apparatus and a power supplying apparatus having the same are provided. The detector detecting a level of an input signal may include a level shifter shifting the level of the input signal, and a comparator amplifying a voltage difference between the level of the signal shifted by the level shifter and a ground, and providing a compensation current according to an offset generated at the time of amplifying a voltage to cancel the offset.

Abstract: A power converter may include an inductor, a switch turned on or turned off according to a control signal to control the flow of a current flowing through the inductor, and a control unit for outputting the control signal to turn on or turn off the switch by integrating a current flowing through the switch to compare the integrated current with the size of a preset reference voltage. The power converter and a driving method for the same may reduce errors of current control and have a simple structure.

Abstract: A power converter and a driving method for the same may prevent a current from flowing excessively during initial driving. The power converter may include an inductor, a switch turned on or turned off according to a control signal to control a current flowing through the inductor, and a control unit detecting the magnitude of the current flowing through the switch, outputting the control signal for controlling the turn-on/turn-off operation of the switch, setting a reference current and turning off the switch during a preset first time when the current flowing through the switch reaches the reference current during initial driving.

Abstract: A power supply device may include a power supplying unit switching input power to supply power; a voltage detecting unit obtaining output voltage information related to the power supplying unit; a controlling unit outputting a feedback signal based on the output voltage information and controlling the switching of the power supplying unit based on the feedback signal; and a phase compensating capacitor stabilizing the feedback signal. The controlling unit may include a detector detecting whether or not the phase compensating capacitor is in an abnormal state based on the feedback signal.