公开(公告)号：US09681507B2

公开(公告)日：2017-06-13

申请号：US14553004

申请日：2014-11-25

Applicant: Cree, Inc.

Inventor： Ihor Lys ,  Ashish Ekbote

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0848 ,  Y02B20/346

Abstract: An apparatus includes a switched-mode converter circuit having an output configured to be coupled to at least one light-emitting device. The apparatus further includes a control circuit configured to generate a measure of a voltage magnitude of a time-varying voltage applied to an input of the switched-mode converter circuit and a measure of a dimming level to be applied to the at least one light-emitting device. The control circuit is configured to control a switch of the switched-mode converter circuit responsive to the generated measures. The control circuit may be implemented using functional units of a microcontroller.

公开(公告)号：US20150257216A1

公开(公告)日：2015-09-10

申请号：US14553004

申请日：2014-11-25

Applicant: Cree, Inc.

Inventor： Ihor Lys ,  Ashish Ekbote

IPC: H05B33/08 ,  H05B37/02

CPC classification number: H05B33/0815 ,  H05B33/0848 ,  Y02B20/346

Abstract: An apparatus includes a switched-mode converter circuit having an output configured to be coupled to at least one light-emitting device. The apparatus further includes a control circuit configured to generate a measure of a voltage magnitude of a time-varying voltage applied to an input of the switched-mode converter circuit and a measure of a dimming level to be applied to the at least one light-emitting device. The control circuit is configured to control a switch of the switched-mode converter circuit responsive to the generated measures. The control circuit may be implemented using functional units of a microcontroller.

Abstract translation: 一种装置包括具有被配置为耦合到至少一个发光装置的输出的开关模式转换器电路。 该装置还包括控制电路，该控制电路被配置为产生施加到开关模式转换器电路的输入端的时变电压的电压幅度的量度，以及施加到至少一个发光二极管的调光电平的量度， 发光装置。 控制电路被配置为响应于所产生的措施来控制开关模式转换器电路的开关。 控制电路可以使用微控制器的功能单元来实现。

公开(公告)号：US20140084801A1

公开(公告)日：2014-03-27

申请号：US13624268

申请日：2012-09-21

Applicant: CREE, INC.

Inventor： Ihor Lys

IPC: H05B37/02

CPC classification number: H05B33/0812

Abstract: A lighting apparatus, such as an LED lighting apparatus, includes at least one light-emitting device, a rectifier circuit having an input configured to be coupled to an AC source, and a driver circuit coupled to an output of the rectifier circuit and to the at least one light emitting device. The apparatus further includes an active current limiter circuit coupled to the output of the rectifier circuit and configured to limit a current provided to the driver circuit, such as a current drawn by an EMI filter of the driver circuit, which may cause erratic operation of a dimmer controlling the lighting apparatus.

Abstract translation: 诸如LED照明装置的照明装置包括至少一个发光装置，具有被配置为耦合到AC源的输入的整流电路和耦合到整流器电路的输出的驱动电路 至少一个发光器件。 该装置还包括有源限流器电路，其耦合到整流器电路的输出并被配置为限制提供给驱动器电路的电流，例如由驱动器电路的EMI滤波器所画出的电流，这可能导致不稳定的操作 调光器控制照明设备。

公开(公告)号：US09781782B2

公开(公告)日：2017-10-03

申请号：US13624268

申请日：2012-09-21

Applicant: Cree, Inc.

Inventor： Ihor Lys

IPC: H05B33/08

CPC classification number: H05B33/0812

Abstract: A lighting apparatus, such as an LED lighting apparatus, includes at least one light-emitting device, a rectifier circuit having an input configured to be coupled to an AC source, and a driver circuit coupled to an output of the rectifier circuit and to the at least one light emitting device. The apparatus further includes an active current limiter circuit coupled to the output of the rectifier circuit and configured to limit a current provided to the driver circuit, such as a current drawn by an EMI filter of the driver circuit, which may cause erratic operation of a dimmer controlling the lighting apparatus.

公开(公告)号：US08896229B2

公开(公告)日：2014-11-25

申请号：US13801658

申请日：2013-03-13

Applicant: Cree, Inc.

Inventor： Ihor Lys ,  Robert D. Underwood

IPC: H05B37/02

CPC classification number: H05B33/0872 ,  H05B33/0809 ,  H05B33/083 ,  H05B33/086

Abstract: A lighting apparatus includes a string of serially-connected light-emitting devices including at least a first segment and a second segment and a control circuit configured to control a relationship of light outputs of the first segment and the second segment by diverting current from a node of the string to at least one energy storage device and subsequently transferring energy from the at least one energy storage device to at least the first segment. The control circuit may be configured to divert the current responsive to a control input, such as a temperature and/or a dimming level. The at least one energy storage device may include at least one inductor. In some embodiments, the control circuit may control at least one color characteristic of light produced by the string.

Abstract translation: 照明装置包括串联连接的发光器件串，至少包括第一段和第二段，以及控制电路，被配置为通过从节点转向电流来控制第一段和第二段的光输出的关系 并且随后将能量从所述至少一个能量存储装置传递到至少所述第一段。 控制电路可以被配置为响应于诸如温度和/或调光水平的控制输入转移电流。 至少一个能量存储装置可以包括至少一个电感器。 在一些实施例中，控制电路可以控制由串产生的光的至少一种颜色特性。

公开(公告)号：US20140265886A1

公开(公告)日：2014-09-18

申请号：US13801658

申请日：2013-03-13

Applicant: CREE, INC.

Inventor： Ihor Lys ,  Robert D. Underwood

IPC: H05B37/02

CPC classification number: H05B33/0872 ,  H05B33/0809 ,  H05B33/083 ,  H05B33/086

Abstract: A lighting apparatus includes a string of serially-connected light-emitting devices including at least a first segment and a second segment and a control circuit configured to control a relationship of light outputs of the first segment and the second segment by diverting current from a node of the string to at least one energy storage device and subsequently transferring energy from the at least one energy storage device to at least the first segment. The control circuit may be configured to divert the current responsive to a control input, such as a temperature and/or a dimming level. The at least one energy storage device may include at least one inductor. In some embodiments, the control circuit may control at least one color characteristic of light produced by the string.

Abstract translation: 照明装置包括串联连接的发光器件串，至少包括第一段和第二段，以及控制电路，被配置为通过从节点转向电流来控制第一段和第二段的光输出的关系 并且随后将能量从所述至少一个能量存储装置传递到至少所述第一段。 控制电路可以被配置为响应于诸如温度和/或调光水平的控制输入转移电流。 至少一个能量存储装置可以包括至少一个电感器。 在一些实施例中，控制电路可以控制由串产生的光的至少一种颜色特性。