SINGLE STAGE LED DRIVER SYSTEM, CONTROL CIRCUIT AND ASSOCIATED CONTROL METHOD

SINGLE STAGE LED DRIVER SYSTEM, CONTROL CIRCUIT AND ASSOCIATED CONTROL METHOD

A light-emitting element driver system has a power conversion circuit, a second switch and a control circuit, the power conversion circuit has a primary circuit, a transformer, a first rectified circuit and a second rectified circuit, the second rectified circuit provides a first signal, the second...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ZHAO QIMING, YU BO, SHENG LICHENG, QIN HONGQIANG, YANG ERIC, LIU BAIREN
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Beschreibung
Zusammenfassung:A light-emitting element driver system has a power conversion circuit, a second switch and a control circuit, the power conversion circuit has a primary circuit, a transformer, a first rectified circuit and a second rectified circuit, the second rectified circuit provides a first signal, the second switch has a first terminal coupled to an output terminal of the first rectified circuit and a second terminal to provide a second signal, when a dimming signal is in a first state, the control circuit provides a first control signal to control the power conversion circuit based on the first signal, and meanwhile provides a second control signal to control the second switch based on the second signal.