| 发明名称 | Circuit for driving lighting apparatus and method thereof | ||
| 摘要 | A circuit for driving a lighting apparatus is provided. The circuit includes a valley signal generator configured to generate a valley signal based on an input voltage, an input voltage determining unit configured to determine whether the input voltage corresponds to a direct voltage or a full-wave rectified AC voltage based on the valley signal, an AC voltage simulation unit configured to generate a virtual valley signal when the input voltage is a DC voltage, and a switching device controller configured to control a switching device used to drive an LED module based the determination and at least one of the valley signal and virtual valley signal. | ||
| 申请公布号 | US9521719(B2) | 申请公布日期 | 2016.12.13 |
| 申请号 | US201514813439 | 申请日期 | 2015.07.30 |
| 申请人 | MagnaChip Semiconductor, Ltd. | 发明人 | Lim Gyu Ho;Yun Tae Il;Ryu Beom Seon |
| 分类号 | H05B33/08 | 主分类号 | H05B33/08 |
| 代理机构 | McGuireWoods LLP | 代理人 | McGuireWoods LLP |
| 主权项 | 1. A circuit for driving a lighting apparatus, comprising: a valley signal generator configured to generate a valley signal based on an input voltage; an input voltage determining unit configured to determine whether the input voltage corresponds to a direct current (DC) voltage or a full-wave rectified AC voltage based on the valley signal; an AC voltage simulation unit configured to generate a virtual valley signal when the input voltage is a DC voltage; and a switching device controller configured to control a switching device used to drive an LED module based on a result of the determination by the input voltage determining unit and at least one of the valley signal and the virtual valley signal. | ||
| 地址 | KR | ||