公开(公告)号：US20160057828A1

公开(公告)日：2016-02-25

申请号：US14465580

申请日：2014-08-21

Applicant: Cree, Inc.

Inventor： Daniel Pope ,  Mike Walters

IPC: H05B33/08

CPC classification number: H05B33/0845 ,  H05B33/0815 ,  Y02B20/347

Abstract: An apparatus includes a plurality of series-connected current control circuits configured to control a current therethrough responsive to at least one current reference signal and to be coupled in parallel with a load, such as a string of LEDs. The apparatus further includes a voltage control circuit configured to control respective voltages across respective ones of the current control circuits. In some embodiments, the voltage control circuit may be configured to individually adjust responses of the current control circuits responsive to the voltages across the current control circuits. In further embodiments, the voltage control circuit may include respective voltage limiters coupled across respective ones of the current control circuits.

Abstract translation: 一种装置包括多个串联连接的电流控制电路，其配置为响应于至少一个电流参考信号来控制电流，并且与诸如一串LED的负载并联耦合。 该装置还包括电压控制电路，其被配置为控制跨越相应电流控制电路的相应电压。 在一些实施例中，电压控制电路可以被配置为响应于电流控制电路两端的电压单独调整电流控制电路的响应。 在另外的实施例中，电压控制电路可以包括耦合在相应的电流控制电路上的各自的电压限制器。

公开(公告)号：US20180199405A1

公开(公告)日：2018-07-12

申请号：US15911953

申请日：2018-03-05

Applicant: CREE, INC.

Inventor： Daniel Pope ,  Jun Zhang ,  Michael B. Gilliom

IPC: H05B33/08 ,  H05B37/02

CPC classification number: H05B33/0815 ,  H05B33/0845 ,  H05B33/086 ,  H05B37/0218 ,  H05B37/0227 ,  H05B37/0254 ,  Y02B20/46

Abstract: An LED lighting device comprises at least one LED selectively energizable to develop light and a control circuit coupled to the LED that develops a command signal comprising first and second command signal components for controlling the at least one LED to cause the LED to develop light comprising a desired brightness in response to the first command signal component. The control circuit controls the at least one LED to cause the LED to develop light comprising a further desired parameter magnitude other than desired brightness in response to the second command signal component, and the first signal component comprises an IEC 0-10 volt analog lighting control.

公开(公告)号：US09871522B2

公开(公告)日：2018-01-16

申请号：US14701025

申请日：2015-04-30

Applicant: Cree, Inc.

Inventor： Qingcong Hu ,  Daniel Pope

IPC: H05B33/08 ,  H03K19/0185

CPC classification number: H03K19/018521 ,  H05B33/0815 ,  Y02B20/346

Abstract: A level shifting circuit can include a level shifting circuit input node that can be coupled to an input signal, where the input signal can be configured to switch between discrete voltage levels in an input voltage domain. A level shifting circuit output node of the level shifting circuit can be configured to provide shifted voltage levels that are shifted relative to the input signal responsive to switching of the input signal. A constant voltage element can have a first terminal that can be coupled to the level shifting circuit input node and can have a second terminal that can be coupled to the level shifting circuit output node. The constant voltage element can be configured to provide a constant voltage level shift to the input signal to provide the shifted voltage levels responsive to switching of the input signal between the discrete voltage levels in the first voltage domain.

公开(公告)号：US20150351190A1

公开(公告)日：2015-12-03

申请号：US14813308

申请日：2015-07-30

Applicant: CREE, INC.

Inventor： Mike Walters ,  Jason Taylor ,  Daniel Pope

IPC: H05B33/08

CPC classification number: H05B33/0812 ,  H05B33/0815 ,  H05B33/0872 ,  Y02B20/345

Abstract: A solid state lighting apparatus can include a variable color input signal configured to indicate a target color of light output from the apparatus. A string current Pulse Width Modulation (PWM) controller circuit can be coupled to the variable color input signal, where the string current PWM controller circuit can be configured to generate a plurality of PWM signals having respective variable duty cycles to enable/disable respective particular string currents for respective variable times as the variable color input signal changes.

Abstract translation: 固态照明装置可以包括被配置为指示从装置输出的光的目标颜色的可变颜色输入信号。 串电流脉冲宽度调制（PWM）控制器电路可以耦合到可变颜色输入信号，其中串电流PWM控制器电路可以被配置为产生具有各自可变占空比的多个PWM信号，以使/禁用相应的特定串 随着可变颜色输入信号的变化，各个可变时间的电流。

公开(公告)号：US20140346874A1

公开(公告)日：2014-11-27

申请号：US13900060

申请日：2013-05-22

Applicant: Cree, Inc.

Inventor： Yuan Fang ,  Daniel Pope ,  James Andrew McBryde

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M1/4258 ,  H02M2001/0032 ,  H05B33/0815 ,  Y02B20/346 ,  Y02B70/126 ,  Y02B70/16 ,  Y10T307/406

Abstract: A power supply includes a power conversion circuit configured to selectively operate in one of an active mode in which output power is supplied to a load and a standby mode in which output power is not supplied to the load, a plurality of auxiliary circuits including a first auxiliary circuit and a second auxiliary circuit, a bias node configured to supply power to the plurality of auxiliary circuits, and a switch that is coupled between the bias node and the first auxiliary circuit and that is configured to disconnect the first auxiliary circuit from the bias node in response to a control signal.

Abstract translation: 电源包括电力转换电路，其被配置为选择性地在其中向负载提供输出功率的有功模式和不向负载提供输出功率的待机模式中的一个中工作;多个辅助电路，包括第一 辅助电路和第二辅助电路，被配置为向所述多个辅助电路供电的偏置节点和耦合在所述偏置节点和所述第一辅助电路之间并且被配置为将所述第一辅助电路与所述偏置断开的开关 响应于控制信号。

公开(公告)号：US20170006673A1

公开(公告)日：2017-01-05

申请号：US14789520

申请日：2015-07-01

Applicant: Cree, Inc.

Inventor： Daniel Pope ,  Jun Zhang ,  Michael B. Gilliom

IPC: H05B33/08 ,  H05B37/02

CPC classification number: H05B33/0815 ,  H05B33/0845 ,  H05B33/086 ,  H05B37/0218 ,  H05B37/0227 ,  H05B37/0254 ,  Y02B20/46

Abstract: According to one aspect, a control system for an LED luminaire includes a dimming control circuit that develops an analog dimming command signal that is variable between zero volts and ten volts to command LED brightness. The control system further includes a modulation circuit coupled to the dimming control circuit. The modulation circuit modifies the analog dimming command signal so as to include digital data for further commanding a parameter of LED operation.

Abstract translation: 根据一个方面，一种用于LED灯具的控制系统包括调光控制电路，其开发可在零伏和十伏之间变化的模拟调光命令信号以指示LED亮度。 控制系统还包括耦合到调光控制电路的调制电路。 调制电路修改模拟调光命令信号，以便包含用于进一步命令LED操作参数的数字数据。

公开(公告)号：US09537407B2

公开(公告)日：2017-01-03

申请号：US13900060

申请日：2013-05-22

Applicant: Cree, Inc.

Inventor： Yuan Fang ,  Daniel Pope ,  James Andrew McBryde

IPC: H02M3/335 ,  H02M1/42 ,  H05B33/08 ,  H02M1/00

CPC classification number: H02M3/33523 ,  H02M1/4258 ,  H02M2001/0032 ,  H05B33/0815 ,  Y02B20/346 ,  Y02B70/126 ,  Y02B70/16 ,  Y10T307/406

Abstract: A power supply includes a power conversion circuit configured to selectively operate in one of an active mode in which output power is supplied to a load and a standby mode in which output power is not supplied to the load, a plurality of auxiliary circuits including a first auxiliary circuit and a second auxiliary circuit, a bias node configured to supply power to the plurality of auxiliary circuits, and a switch that is coupled between the bias node and the first auxiliary circuit and that is configured to disconnect the first auxiliary circuit from the bias node in response to a control signal.

Abstract translation: 电源包括电力转换电路，其被配置为选择性地在其中向负载提供输出功率的有功模式和不向负载提供输出功率的待机模式中的一个中工作;多个辅助电路，包括第一 辅助电路和第二辅助电路，被配置为向所述多个辅助电路供电的偏置节点和耦合在所述偏置节点和所述第一辅助电路之间并且被配置为将所述第一辅助电路与所述偏置断开的开关 响应于控制信号。

公开(公告)号：US20160315499A1

公开(公告)日：2016-10-27

申请号：US14694669

申请日：2015-04-23

Applicant: Cree, Inc.

Inventor： Daniel Pope

IPC: H02J9/06 ,  H05B33/08

CPC classification number: H02J9/061 ,  H05B33/0815 ,  H05B33/0845 ,  H05B33/0854 ,  H05B37/02

Abstract: According to one aspect, a load control system responsive to electric power from either a first power source or a second power source operable during first and second time periods, respectively, comprises a first circuit responsive to the first and second power sources to develop power waveforms having different characteristics during the first and second time periods. The load control system further includes a second circuit coupled to the first circuit and responsive to the characteristics of the power developed by the first circuit for developing first and second different outputs during the first and second time periods, respectively.

Abstract translation: 根据一个方面，分别响应于在第一和第二时间段期间操作的第一电源或第二电源的电力的负载控制系统包括响应于第一和第二电源的第一电路以开发功率波形 在第一和第二时间段具有不同的特性。 负载控制系统还包括耦合到第一电路的第二电路，并且响应于由第一电路开发的功率的特性分别在第一和第二时间段期间显影第一和第二不同输出。

公开(公告)号：US09425687B2

公开(公告)日：2016-08-23

申请号：US13945255

申请日：2013-07-18

Applicant: Cree, Inc.

Inventor： Daniel Pope ,  Yuequan Hu

IPC: H02M3/04 ,  H05B33/08

CPC classification number: H02M3/04 ,  H05B33/0818 ,  H05B33/0827 ,  Y02B20/346

Abstract: A method of operating a switched mode power supply circuit can be provided by determining an error in a control signal for the switched mode power supply circuit. The error can be compared to an error threshold value to provide a filtering selection. The error can be adaptively filtered of based on the filtering selection to provide a selected filtering and the error can be filtered using the selected filtering.

Abstract translation: 可以通过确定开关模式电源电路的控制信号中的误差来提供操作开关模式电源电路的方法。 可以将错误与错误阈值进行比较以提供过滤选择。 可以根据过滤选择自适应地过滤错误，以提供所选择的过滤，并且可以使用所选过滤来过滤错误。

公开(公告)号：US10433377B2

公开(公告)日：2019-10-01

申请号：US15911953

申请日：2018-03-05

Applicant: CREE, INC.

Inventor： Daniel Pope ,  Jun Zhang ,  Michael B. Gilliom

IPC: H05B33/08 ,  H05B37/02

Abstract: An LED lighting device comprises at least one LED selectively energizable to develop light and a control circuit coupled to the LED that develops a command signal comprising first and second command signal components for controlling the at least one LED to cause the LED to develop light comprising a desired brightness in response to the first command signal component. The control circuit controls the at least one LED to cause the LED to develop light comprising a further desired parameter magnitude other than desired brightness in response to the second command signal component, and the first signal component comprises an IEC 0-10 volt analog lighting control.