Adapter power supply

An advantage of the present invention is to provide an adapter power supply which varies a link voltage of DC power serving an input power of a DC/DC converter according to variation of a load current estimated by measuring a secondary current using a lossless current measurement technique at a prim...

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Bibliographische Detailangaben
Hauptverfasser:	Ryu, Byoung Woo, Moon, Gun Woo, Choi, Seong Wook, Kim, Jong Sun, Oh, Dong Seong
Format:	Patent
Sprache:	eng
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	An advantage of the present invention is to provide an adapter power supply which varies a link voltage of DC power serving an input power of a DC/DC converter according to variation of a load current estimated by measuring a secondary current using a lossless current measurement technique at a primary terminal of a transformer of the DC/DC converter and thus presuming a load current of an output power.An adapter power supply according to present invention may include an AC/DC converter converting a commercial AC power into a DC power; a DC/DC converter including a transformer composed of a primary terminal and a secondary terminal in order to output an output power by converting a link voltage of the DC power; and a controller presuming a load current of the output power through a primary current of the transformer and varying the link voltage of the DC power according to variation of the estimated load current.