| 发明名称 |
High-precision LED control circuit, method and LED driver thereof |
| 摘要 |
In one embodiment, a light-emitting diode (LED) driver can include: (i) a reference voltage control circuit configured to provide a reference voltage signal in response to an enable signal; (ii) a current control circuit configured to control an output current of the LED driver in response to the reference voltage signal; and (iii) the LED driver being configured to drive an LED load when the enable signal is active. |
| 申请公布号 |
US9167643(B2) |
申请公布日期 |
2015.10.20 |
| 申请号 |
US201314037795 |
申请日期 |
2013.09.26 |
| 申请人 |
Silergy Semiconductor Technology (Hangzhou) LTD |
发明人 |
Xu Xiaoru;Zhang Lu |
| 分类号 |
H05B33/08 |
主分类号 |
H05B33/08 |
| 代理机构 |
|
代理人 |
Stephens, Jr. Michael C. |
| 主权项 |
1. A light-emitting diode (LED) driver, comprising:
a) a reference voltage control circuit configured to provide a reference voltage signal in response to an enable signal; b) a current control circuit configured to generate a control signal to control an output current of said LED driver in response to said reference voltage signal and an output voltage feedback signal from an LED load; c) a power switch controllable by said enable signal and said control signal that are received at inputs of a logic gate, wherein an output of said logic gate is only coupled to a gate of said power switch; and d) said LED driver being configured to drive said LED load when said enable signal is active. |
| 地址 |
Hangzhou CN |
