Invention Grant
US09356522B2 Power supply circuit for driving LED lamp and power supply method, and primary-side control circuit of flyback transformer
有权
用于驱动LED灯和供电方式的电源电路，以及回扫变压器的初级侧控制电路
- Patent Title: Power supply circuit for driving LED lamp and power supply method, and primary-side control circuit of flyback transformer
- Patent Title (中): 用于驱动LED灯和供电方式的电源电路，以及回扫变压器的初级侧控制电路
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Application No.: US14403782Application Date: 2013-05-31
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Publication No.: US09356522B2Publication Date: 2016-05-31
- Inventor: Ju Pyo Hong , Jun Ho Kim
- Applicant: SILICON WORKS CO., LTD.
- Applicant Address: KR Daejeon-Si
- Assignee: SILICON WORKS CO., LTD.
- Current Assignee: SILICON WORKS CO., LTD.
- Current Assignee Address: KR Daejeon-Si
- Agency: Kile Park Reed & Houtteman PLLC
- Priority: KR10-2012-0058542 20120531
- International Application: PCT/KR2013/004862 WO 20130531
- International Announcement: WO2013/180547 WO 20131205
- Main IPC: H05B33/08
- IPC: H05B33/08 ; H02M3/335 ; H02M1/42 ; H02M1/14
Abstract:
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.
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