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1. CN111279799 - LOAD CONTROL DEVICE HAVING A WIDE OUTPUT RANGE

Office China
Application Number 201880069115.2
Application Date 23.02.2018
Publication Number 111279799
Publication Date 12.06.2020
Publication Kind A
IPC
H05B 45/30
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes
30Driver circuits
CPC
H05B 45/10
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
10Controlling the intensity of the light
H05B 45/50
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
50responsive to malfunctions of LEDs; responsive to LED life; Protective circuits
H05B 45/37
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
30Driver circuits
37Converter circuits
H05B 45/44
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
40Details of LED load circuits
44with an active control inside an LED matrix
H05B 47/155
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
47Circuit arrangements for operating light sources in general, i.e. where the type of the light source is not relevant
10Controlling the light source
155Coordinated control of two or more light sources
Applicants LUTRON TECHNOLOGY COMPANY LLC
路创技术有限责任公司
Inventors DEJONGE STUART W.
斯图尔特·W·德扬
KOBER STEVEN J.
史蒂文·J·科博
TAIPALE MARK S.
马克·S·泰帕莱
Agents 中原信达知识产权代理有限责任公司 11219
中原信达知识产权代理有限责任公司 11219
Priority Data 62/562,066 22.09.2017 US
62/580,707 02.11.2017 US
Title
(EN) LOAD CONTROL DEVICE HAVING A WIDE OUTPUT RANGE
(ZH) 具有宽输出范围的负载控制设备
Abstract
(EN)
A load control device (e.g., an LED driver) for controlling the intensity of a lighting load (e.g., an LED light source) may provide a wide output range and flicker-free adjustment of the intensity ofthe lighting load. The load control device may comprise a load regulation circuit, a control circuit, and a filter circuit (e.g., a boxcar filter circuit) that operates in a different manner in dependence upon a target current. When the intensity of the lighting load is near a low-end intensity, the control circuit may adjust an operating frequency of the load regulation circuit in response to the target current, and may control the filter circuit to filter a current feedback signal during a filter window that repeats on periodic basis. When the intensity of the lighting load is near a high-end intensity, the control circuit may control the filter circuit to constantly filter the current feedback signal.

(ZH)
用于控制照明负载(例如,LED光源)的强度的负载控制设备(例如,LED驱动器)可以提供宽输出范围和照明负载的强度的无闪烁调节。负载控制设备可以包括负载调节电路、控制电路以及取决于目标电流以不同方式工作的滤波器电路(例如,矩形窗滤波器电路)。当照明负载的强度接近低端强度时,控制电路可以响应于目标电流来调整负载调节电路的工作频率,并且可以控制滤波器电路在周期性重复的滤波器窗口期间对电流反馈信号进行滤波。当照明负载的强度接近高端强度时,控制电路可以控制滤波器电路持续地对电流反馈信号进行滤波。

Also published as
MXMX/a/2020/003171