Power supply device sensing AC-off state

There is provided a power supply device sensing an AC-off state. The power supply device includes a rectifier configured to rectify AC power into DC power, a transformer configured to supply output voltage by converting voltage of the DC power rectified by the rectifier, and a Pulse Width Modulation...

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Bibliographische Detailangaben
Hauptverfasser:	Jang Julie, Kim Hae Wook, Ryu Young Gi, Jung James, Cui Zhi Yuan
Format:	Patent
Sprache:	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:	There is provided a power supply device sensing an AC-off state. The power supply device includes a rectifier configured to rectify AC power into DC power, a transformer configured to supply output voltage by converting voltage of the DC power rectified by the rectifier, and a Pulse Width Modulation (PWM) control module configured to output voltage by switching a power switching device connected to the transformer, configured to drive the power supply device by connecting power of an HV pin to a VCC pin, and configured to determine an AC-off state by sensing voltage rectified by the rectifier.