Kile Park Reed & Houtteman PLLC
Power supply circuit for driving LED lamp and power supply method, and primary-side control circuit of flyback transformer
The present invention discloses a power supply circuit for driving an LED lamp and a power supply method. The power supply circuit is constituted by an AC-DC converter by adopting DCM-DCM. Also, the power supply circuit adopts a valley fill circuit to reduce rippling of output current and adopts the DCM-DCM to stabilize a link voltage, thereby realizing a power factor correction circuit having two-stage structures. Thus, an input voltage of the flyback converter may be improved, and a high reverse voltage may be applied.
SILICON WORKS CO., LTD.
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Ju Pyo Jun Ho
Hong Kim