公开(公告)号：US20170027037A1

公开(公告)日：2017-01-26

申请号：US15061310

申请日：2016-03-04

Applicant: NXP B.V.

Inventor： Aliaksei Sedzin ,  Marc Vlemmings

IPC: H05B33/08

CPC classification number: H05B33/0857 ,  H05B33/0845 ,  H05B33/086

Abstract: A method, controller and lighting circuit are disclosed: the variation of chromaticity and luminosity of LEDs as a function of temperature over an operating temperature range is characterised; virtual LEDs, including a virtual white are defined, such that the chromaticity of each virtual LED can be achieved by combining component light from the LEDs for all temperatures within the operating range; the requested settings R, G, B of each of three primary colours, defining a requested chromaticity and a requested luminance, are used to determine a virtual white control setting corresponding to a maximum fraction of a total luminance at the requested chromaticity which can be provided by the virtual white LED; control settings for each of the other LEDs are thereby determined, and the setting for each of the LEDs is determined from the sum of that LED's component of the virtual LEDs.

Abstract translation: 公开了一种方法，控制器和照明电路：在工作温度范围内，作为温度的函数的LED的色度和亮度的变化被表征; 定义包括虚拟白色的虚拟LED，使得可以通过将来自LED的组件光组合在操作范围内的所有温度来实现每个虚拟LED的色度; 使用定义请求的色度和请求的亮度的三原色中的每一个的请求的设置R，G，B来确定对应于可以提供的所请求的色度的总亮度的最大分数的虚拟白色控制设置 由虚拟白光LED; 由此确定每个其他LED的控制设置，并且根据该LED的虚拟LED的分量的总和来确定每个LED的设置。

公开(公告)号：US20170238391A1

公开(公告)日：2017-08-17

申请号：US15426174

申请日：2017-02-07

Applicant: NXP B.V.

Inventor： Aliaksei Vladimirovich Sedzin ,  Marc Vlemmings

IPC: H05B33/08

CPC classification number: H05B33/0863 ,  H05B33/0845 ,  H05B33/086 ,  H05B33/0866

Abstract: A controller for a lamp, comprising an input terminal for receiving a requested-colour-signal representative of a requested-colour-value to be provided by the lamp and one or more temperature-values associated with the lamp. The controller includes a full-colour-module for providing a full-colour-lamp-control-signal for an output terminal; a stabilization-module for providing a stabilized-lamp-control-signal for the output terminal; and a mode controller for comparing the requested-colour-value with a threshold value. If the requested-colour-value satisfies the threshold value, then the stabilization-module provides the stabilized-lamp-control-signal to the output terminal. If the requested-colour-value does not satisfy the threshold value, then the full-colour-module provides the full-colour-lamp-control-signal to the output terminal. The stabilization-module is configured to: generate stabilized-colour-values based on the temperature-values; and provide the stabilized-lamp-control-signal based on the requested-colour-value and the stabilized-colour-values. The full-colour-module is configured to provide the full-colour-lamp-control-signal based on the requested-colour-value.

公开(公告)号：US09723669B2

公开(公告)日：2017-08-01

申请号：US15200076

申请日：2016-07-01

Applicant: NXP B.V.

Inventor： Aliaksei Vladimirovich Sedzin ,  Marc Vlemmings

IPC: H05B37/00 ,  H05B33/08 ,  F21V29/70 ,  F21Y103/10 ,  F21Y115/10

CPC classification number: H05B33/0815 ,  F21V29/70 ,  F21Y2103/10 ,  F21Y2115/10 ,  H05B33/0827 ,  H05B33/0845 ,  H05B33/0854 ,  H05B33/0857

Abstract: An LED lighting system is disclosed comprising: a heatsink; a plurality of strings of LEDs each string comprising one or more LEDs each having a junction and being mounted on the heatsink, and a controller comprising a memory unit and a processor and being configured to supply a current to each of the strings of LEDs; the processor comprises: a first temperature estimation subunit configured to generate an estimate of a temperature of the junction of a one of strings of LEDs; a heatsink temperature estimation subunit configured to estimate a temperature of the heatsink unit from the first estimate; and a second temperature estimation subunit configured to provide an estimate of a temperature of the junction of a second string of LEDs, from the estimated temperature of the heatsink. A controller for and method of operating a plurality of LEDs are also disclosed.

公开(公告)号：US09961739B2

公开(公告)日：2018-05-01

申请号：US15426174

申请日：2017-02-07

Applicant: NXP B.V.

Inventor： Aliaksei Vladimirovich Sedzin ,  Marc Vlemmings

IPC: H05B37/02 ,  H05B33/08

CPC classification number: H05B33/0863 ,  H05B33/0845 ,  H05B33/086 ,  H05B33/0866

Abstract: A controller for a lamp, comprising an input terminal for receiving a requested-color-signal representative of a requested-color-value to be provided by the lamp and one or more temperature-values associated with the lamp. The controller includes a full-color-module for providing a full-color-lamp-control-signal for an output terminal; a stabilization-module for providing a stabilized-lamp-control-signal for the output terminal; and a mode controller for comparing the requested-color-value with a threshold value. If the requested-color-value satisfies the threshold value, then the stabilization-module provides the stabilized-lamp-control-signal to the output terminal. If the requested-color-value does not satisfy the threshold value, then the full-color-module provides the full-color-lamp-control-signal to the output terminal. The stabilization-module is configured to: generate stabilized-color-values based on the temperature-values; and provide the stabilized-lamp-control-signal based on the requested-color-value and the stabilized-color-values. The full-color-module is configured to provide the full-color-lamp-control-signal based on the requested-color-value.

公开(公告)号：US09723678B2

公开(公告)日：2017-08-01

申请号：US15061310

申请日：2016-03-04

Applicant: NXP B.V.

Inventor： Aliaksei Sedzin ,  Marc Vlemmings

IPC: H05B37/02 ,  H05B33/08

CPC classification number: H05B33/0857 ,  H05B33/0845 ,  H05B33/086

Abstract: A method, controller and lighting circuit are disclosed: the variation of chromaticity and luminosity of LEDs as a function of temperature over an operating temperature range is characterized; virtual LEDs, including a virtual white are defined, such that the chromaticity of each virtual LED can be achieved by combining component light from the LEDs for all temperatures within the operating range; the requested settings R, G, B of each of three primary colors, defining a requested chromaticity and a requested luminance, are used to determine a virtual white control setting corresponding to a maximum fraction of a total luminance at the requested chromaticity which can be provided by the virtual white LED; control settings for each of the other LEDs are thereby determined, and the setting for each of the LEDs is determined from the sum of that LED's component of the virtual LEDs.

公开(公告)号：US20170006676A1

公开(公告)日：2017-01-05

申请号：US15200076

申请日：2016-07-01

Applicant: NXP B.V.

Inventor： Aliaksei Vladimirovich Sedzin ,  Marc Vlemmings

IPC: H05B33/08 ,  F21V29/70

CPC classification number: H05B33/0815 ,  F21V29/70 ,  F21Y2103/10 ,  F21Y2115/10 ,  H05B33/0827 ,  H05B33/0845 ,  H05B33/0854 ,  H05B33/0857

Abstract: An LED lighting system is disclosed comprising: a heatsink; a plurality of strings of LEDs each string comprising one or more LEDs each having a junction and being mounted on the heatsink, and a controller comprising a memory unit and a processor and being configured to supply a current to each of the strings of LEDs; the processor comprises: a first temperature estimation subunit configured to generate an estimate of a temperature of the junction of a one of strings of LEDs; a heatsink temperature estimation subunit configured to estimate a temperature of the heatsink unit from the first estimate; and a second temperature estimation subunit configured to provide an estimate of a temperature of the junction of a second string of LEDs, from the estimated temperature of the heatsink. A controller for and method of operating a plurality of LEDs are also disclosed.

Abstract translation: 公开了一种LED照明系统，包括：散热器; 多个LED串，每个串包括一个或多个LED，每个LED均具有接合点并安装在散热器上;以及控制器，包括存储器单元和处理器，并且被配置为向每个LED串提供电流; 处理器包括：第一温度估计子单元，被配置为生成LED串中的一个串的温度的估计值; 散热器温度估计子单元，被配置为从所述第一估计估计所述散热器单元的温度; 以及第二温度估计子单元，被配置为从所估计的散热器的温度提供第二串LED的接合点的温度估计值。 还公开了一种操作多个LED的控制器和操作方法。