Power factor correction circuit and method for correcting power factor, coverter device thereof

The present invention is a power factor correction unit, and the power factor correction method, relates to a converter device having the same, when the input signal is changed is input to the converter in consideration of only the frequency and the phase information of the input signal the reference signal is real-time change for the input signal . Therefore, it is possible to configure the control circuit without additionally improve the power factor correction and harmonic distortion, and can reduce the size of the semiconductor chip, there is the possible benefit the same when the device is applied with a waveform other than a sine wave.