| 发明名称 |
METHOD AND APPARATUS FOR CANCELLING OUTPUT CURRENT RIPPLES IN LED DRIVING CIRCUITS |
| 摘要 |
A device and method for reducing current ripple to a light emitting diode array having a single stage power factor correction driver with an output voltage ripple that is reduced by using a linear current regulator connected in series between the single stage power factor correction driver and the light emitting diode array, which actively adjusts an equivalent impedance of the linear current regulator in correspondence with the output voltage ripple of the single stage power factor correction driver. |
| 申请公布号 |
US2015084527(A1) |
申请公布日期 |
2015.03.26 |
| 申请号 |
US201314037909 |
申请日期 |
2013.09.26 |
| 申请人 |
Huizhou Light Engine Limited |
发明人 |
Siu Kam Wah;Leung Wa Hing;Wong Siu Hong;Tian Bo |
| 分类号 |
H05B33/08 |
主分类号 |
H05B33/08 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A lighting array comprising:
a single stage power factor correction driver for converting an AC supply voltage to DC and providing a power correction factor, with an output of the single stage power factor correction driver having an output voltage ripple; a light emitting diode array; and a linear current regulator connected in series between the single stage power factor correction driver and the light emitting diode array to actively adjust an equivalent impedance of the linear current regulator in correspondence with the output voltage ripple of the single stage power factor correction driver. |
| 地址 |
Huizhou City CN |
