利索-全球专利检索

  1. 登录
  2. 注册
发明授权
US09258858B2 Active capacitor circuit 有权
有源电容电路

Active capacitor circuit
摘要：
The present invention relates to an active capacitor circuit (40) for use in a driver device for driving a load (22), in particular an LED unit comprising one or more LEDs (23). Further, the present invention relates to a driver device comprising such an active capacitor circuit. The proposed active capacitor circuit comprises coupling terminals (41, 42) for providing a drive voltage (vD) and/or drive current (iD) for driving a load (22) to be coupled between said coupling terminals (41, 42), an output power stage (50) coupled between said coupling terminals (41, 42) for converting said periodic current (iA) into said drive current (iD), a low frequency capacitor (46) coupled between a capacitor output terminal (48) of said output power stage (50) and a coupling terminal (42), and a control unit (60) for controlling said output power stage (50) by use of a control signal (Sd) obtained from a feedback of the drive voltage (vD), a capacitor voltage (vC) across said low frequency capacitor (46) and/or a capacitor current (iC) through said low frequency capacitor (46).
摘要（中）：

本发明涉及用于驱动负载（22）的驱动器装置中的有源电容器电路（40），特别是包括一个或多个LED（23）的LED单元。 此外，本发明涉及包括这种有源电容电路的驱动器装置。 所提出的有源电容电路包括用于提供用于驱动耦合在所述耦合端子（41,42）之间的负载（22）的驱动电压（vD）和/或驱动电流（iD）的耦合端子（41,42）， 输出功率级（50），其耦合在所述耦合端子（41,42）之间，用于将所述周期性电流（iA）转换成所述驱动电流（iD）;低频电容器（46），耦合在所述电容器输出端 输出功率级（50）和耦合端子（42）;以及控制单元（60），用于通过使用从驱动电压（vD）的反馈获得的控制信号（Sd）来控制所述输出功率级（50） ，所述低频电容器（46）之间的电容电压（vC）和/或通过所述低频电容器（46）的电容器电流（iC）。

公开/授权文献
信息查询
Espacenet
0/0