发明名称 |
Circuits and methods for controlling power of light sources |
摘要 |
A driving circuit for driving a light source includes a power converter, a controller and a voltage-controlled current source. The power converter is coupled to the light source, and receives an input voltage from a power source and provides an output voltage to the light source. The power converter includes a switch coupled in series with the light source. The controller is coupled to the power converter and controls a power of the light source by controlling the switch. The voltage-controlled current source is coupled to the controller and provides a first current. The controller controls the switch based on the first current. |
申请公布号 |
US8324832(B2) |
申请公布日期 |
2012.12.04 |
申请号 |
US20100823269 |
申请日期 |
2010.06.25 |
申请人 |
YAN TIESHENG;REN ZHIMOU;REN JUN;KUO CHING-CHUAN;O2MICRO, INC. |
发明人 |
YAN TIESHENG;REN ZHIMOU;REN JUN;KUO CHING-CHUAN |
分类号 |
H05B37/02 |
主分类号 |
H05B37/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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