Power factor correction circuit

The invention relates to a power factor correction circuit which is coupled with one output end of a power converter through an analog and digital conversion circuit and converts one output signal of the power converter to one digital signal, a feedback circuit is coupled with the analog and digital...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LAI ZHITING, YANG HUICONG, ZHANG ZHAOJU, CHEN ZHILIANG, HUANG QINGHUO, GUAN YOUAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	The invention relates to a power factor correction circuit which is coupled with one output end of a power converter through an analog and digital conversion circuit and converts one output signal of the power converter to one digital signal, a feedback circuit is coupled with the analog and digital conversion circuit and generates one timing signal according to the digital signal, and a counting circuit coupled with the feedback circuit and one input end of the power converter and generates one switching signal according to one triggering signal and the timing signal for switching a switch of the power converter. Therefore, the power factor correction circuit can be can be digitalized through one analog and digital conversion circuit, one feedback circuit and one counting circuit so that the stability of a system is increased, and the power factor correction circuit can also be effectively digitalized so that the complexity of the circuit is reduced.