New type high-power LED driving power source

The invention discloses a new type high-power LED driving power which comprises a protection filtering rectification and a PFC circuit, the input ends of the protection filtering rectification and the PFC circuit are connected with the power source, the output ends of the protection filtering rectif...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SHENG LITAO, JIANG YUANYI, TANG FENGHE
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention discloses a new type high-power LED driving power which comprises a protection filtering rectification and a PFC circuit, the input ends of the protection filtering rectification and the PFC circuit are connected with the power source, the output ends of the protection filtering rectification and the PFC circuit are connected with a half-bridge series-resonance circuit the output end of which is connected with a synchronous rectification circuit, the output end of the synchronous rectification circuit is connected with a current sampling circuit and a voltage sampling circuit, one path output of the current sampling circuit is connected with load, the other path output of the current sampling circuit is connected with a same-phase amplifying circuit, one path input of a samephase summer circuit is connected with the output end of the same-phase amplifying circuit, the other path input is connected with a control signal of an external output circuit, the output ends of the same phase summer circu