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1. (WO2013162299) SWITCHING-TYPE POWER SUPPLY APPARATUS AND CONTROL CIRCUIT CAPABLE OF CORRECTING POWER FACTOR

Pub. No.:    WO/2013/162299    International Application No.:    PCT/KR2013/003558
Publication Date: Fri Nov 01 00:59:59 CET 2013 International Filing Date: Fri Apr 26 01:59:59 CEST 2013
IPC: H02M 1/42
H02M 3/28
H02M 1/12
H05B 37/02
G05F 1/70
Applicants: PARK, Chan Woong
박찬웅
Inventors: PARK, Chan Woong
박찬웅
Title: SWITCHING-TYPE POWER SUPPLY APPARATUS AND CONTROL CIRCUIT CAPABLE OF CORRECTING POWER FACTOR
Abstract:
The present invention relates to a switching-type power supply apparatus and to a control circuit having a power factor-correcting function. One or two switching elements are controlled so as to be opened/closed in accordance with a switching period and time corresponding to the feedback from a second power-converting unit so as to correct a power factor by means of a first power-converting unit such that input current having low harmonic distortion can flow, and at the same time, a second power-converting unit performs an operation to stabilize output voltage and current. Thus, the switching-type power supply apparatus and the control circuit of the present invention may provide the advantages of a simple configuration, small size, and reduced costs as compared to conventional technologies that require two independent control outputs and two independent switching elements.