公开(公告)号：US20170223793A1

公开(公告)日：2017-08-03

申请号：US15361481

申请日：2016-11-27

Applicant: Lextar Electronics Corporation

Inventor： Chien-Nan YEH ,  Chun-Jong CHANG ,  Po-Shen CHEN ,  Kai-Hsiang SHIH ,  Jhao-Cyuan HUANG ,  Ku-Cheng LIN

IPC: H05B33/08

CPC classification number: H05B33/0818 ,  H05B33/0827 ,  H05B33/083 ,  H05B33/0857

Abstract: A dimming module and a solid state lighting device are shown. The dimming module includes a rectifying circuit, a first driving circuit, and a processing circuit. The rectifying circuit is configured to convert an AC voltage to a rectified voltage. The first driving circuit is configured to receive the rectified voltage to provide a first current so as to drive a first lighting module. The first driving circuit includes a first switch. The first switch turns ON or OFF selectively according to a first control voltage signal so as to control the first current. The processing circuit is configured to receive a dimming command, and adjust the first control voltage signal according to the dimming command. The first control voltage signal is configured to control a phase delay angle and a duty cycle of the first current.

公开(公告)号：US20170215244A1

公开(公告)日：2017-07-27

申请号：US15361076

申请日：2016-11-25

Applicant: Lextar Electronics Corporation

Inventor： Chien-Nan YEH ,  Chun-Jong CHANG ,  Po-Shen CHEN ,  Kai-Hsiang SHIH ,  Jhao-Cyuan HUANG ,  Ku-Cheng LIN

IPC: H05B33/08

CPC classification number: H05B33/0845 ,  H05B33/083 ,  H05B33/0857 ,  H05B33/086

Abstract: A dimming module and a solid state lighting device are shown. The dimming module includes a rectifying circuit, a phase control circuit, a processing circuit and a first driving circuit. The rectifying circuit is configured to convert an input AC voltage to a rectified voltage signal. The phase control circuit is configured to receive the rectified voltage signal and a dimming command, and output a control voltage signal correspondingly in which the phase control circuit controls a phase delay angle of the control voltage signal according to the dimming command. The processing circuit is configured to receive the control voltage signal and adjust a first driving voltage signal according to the phase delay angle. The first driving circuit is configured to receive the first driving voltage signal to drive a first lighting module.

公开(公告)号：US20170339763A1

公开(公告)日：2017-11-23

申请号：US15591088

申请日：2017-05-09

Applicant: Lextar Electronics Corporation

Inventor： Jhao-Cyuan HUANG ,  Chien-Nan YEH ,  Chun-Jong CHANG ,  Ching-Piao CHEN ,  Po-Shen CHEN

IPC: H05B33/08 ,  F21V23/00 ,  F21K9/238

CPC classification number: H05B33/0851 ,  F21K9/232 ,  F21K9/238 ,  F21S8/02 ,  F21S8/04 ,  F21V23/005 ,  F21Y2115/10 ,  H05B33/0812 ,  H05B33/0815 ,  H05B33/0845 ,  Y02B20/343

Abstract: A dimming module includes a triggering circuit, a control signal generating circuit, a voltage converting circuit, and a linear driving circuit. The triggering circuit is configured to control a trigger delay angle of an AC input voltage according to a dimming command, in order to output a first voltage signal correspondingly. The control signal generating circuit is configured to output a control voltage according to the first voltage signal. The voltage converting circuit is configured to output a DC operating voltage having an operating level according to the first voltage signal, and output the DC operating voltage to a lighting module, in which the lighting module includes a light-emitting diode. The linear driving circuit is configured to drive the lighting module according to the control voltage.

公开(公告)号：US20150015154A1

公开(公告)日：2015-01-15

申请号：US14161997

申请日：2014-01-23

Applicant: Lextar Electronics Corporation

Inventor： Chun-Kuang CHEN ,  Po-Shen CHEN

IPC: H05B33/08

CPC classification number: H05B33/0809 ,  F21K9/27 ,  F21Y2103/10 ,  F21Y2115/10 ,  H05B33/08 ,  H05B33/0803 ,  H05B37/02 ,  Y02B20/383 ,  Y02B20/386

Abstract: A light-emitting diode (LED) light tube driving circuit includes a LED driver and a rectifier unit. The LED driver is configured for receiving an operating voltage to drive at least one LED. The rectifier unit has a first input/output terminal and a second input/output terminal and is electrically coupled to an external alternating-current power source selectively by the first input/output terminal and the second input/output terminal. The rectifier unit is configured for providing the operating voltage to the LED driver. The rectifier unit further includes a first rectifier diode and a second rectifier diode.

Abstract translation: 发光二极管（LED）灯管驱动电路包括LED驱动器和整流器单元。 LED驱动器被配置为接收操作电压以驱动至少一个LED。 整流单元具有第一输入/输出端子和第二输入/输出端子，并且由第一输入/输出端子和第二输入/输出端子选择性地耦合到外部交流电源。 整流器单元被配置为向LED驱动器提供工作电压。 整流单元还包括第一整流二极管和第二整流二极管。

公开(公告)号：US20140346964A1

公开(公告)日：2014-11-27

申请号：US14173823

申请日：2014-02-06

Applicant: Lextar Electronics Corporation

Inventor： Chun-Kuang CHEN ,  Po-Shen CHEN

IPC: H05B33/08

CPC classification number: H05B33/0842 ,  H05B33/0815

Abstract: An application circuit includes a dynamic load circuit and a control circuit. The dynamic load circuit is electrically connected to a light source. The control circuit is electrically connected to the dynamic load circuit and a TRIAC. The control circuit controls the load status of the dynamic load circuit based on output current from the TRIAC, so as to turn on the light source.

Abstract translation: 应用电路包括动态负载电路和控制电路。 动态负载电路电连接到光源。 控制电路与动态负载电路和TRIAC电连接。 控制电路基于来自TRIAC的输出电流来控制动态负载电路的负载状态，以便接通光源。

公开(公告)号：US20140246983A1

公开(公告)日：2014-09-04

申请号：US14182302

申请日：2014-02-18

Applicant: Lextar Electronics Corporation

Inventor： Po-Shen CHEN

IPC: H05B33/08 ,  H05B37/02

CPC classification number: H05B33/0842

Abstract: A lamp includes a light-emitting device, a lamp cover and a lamp driver. The lamp cover covers the light-emitting device, such that the light emitted by the light-emitting device partly passes through the lamp cover and is partly reflected from the lamp cover. The lamp driver determines whether the lamp cover is damaged or the lamp cover still covers the light-emitting device based on the light reflected from the lamp cover to subsequently drive or turn off the light-emitting device selectively. The lamp driver includes a driving unit. The driving unit stops driving the light-emitting device when the lamp cover is damaged or the light-emitting device is not covered by the lamp cover. The driving unit keeps driving the light-emitting device when the lamp cover is not damaged or the light-emitting device is normally covered by the lamp cover.

Abstract translation: 灯包括发光装置，灯罩和灯驱动器。 灯罩覆盖发光装置，使得由发光装置发射的光部分地通过灯罩，并且部分地从灯罩反射。 灯驱动器基于从灯罩反射的光来确定灯罩是否损坏或灯罩是否仍然覆盖发光装置，以随后选择性地驱动或关闭发光装置。 灯驱动器包括驱动单元。 当灯罩损坏或发光装置未被灯罩覆盖时，驱动单元停止驱动发光装置。 当灯罩未被损坏或发光装置通常被灯罩覆盖时，驱动单元继续驱动发光装置。

公开(公告)号：US20160278173A1

公开(公告)日：2016-09-22

申请号：US15062178

申请日：2016-03-06

Applicant: Lextar Electronics Corporation

Inventor： Chun-Jong CHANG ,  Po-Shen CHEN ,  Jhao-Cyuan HUANG ,  Chien-Nan YEH

IPC: H05B33/08 ,  H03K5/08

CPC classification number: H05B33/0815 ,  H03K5/08 ,  H05B33/0812

Abstract: A dimming circuit is disclosed herein. The dimming circuit includes a control voltage receiving module and a driving module. The control voltage receiving module is configured to output a reference voltage according to a control voltage. The driving module is electrically connected to the control voltage receiving module, in which the driving module includes a driving transistor, a first transistor and a feedback circuit. The driving transistor is configured to provide a driving current to drive a lighting module. The first transistor is configured to control the driving transistor with feedback according to the reference voltage. The feedback circuit is electrically connected between the driving transistor and the first transistor and configured to determine the operating state of the first transistor according to the driving current.

Abstract translation: 本文公开了一种调光电路。 调光电路包括控制电压接收模块和驱动模块。 控制电压接收模块被配置为根据控制电压输出参考电压。 驱动模块电连接到控制电压接收模块，其中驱动模块包括驱动晶体管，第一晶体管和反馈电路。 驱动晶体管被配置为提供驱动电流以驱动照明模块。 第一晶体管被配置为根据参考电压来控制具有反馈的驱动晶体管。 反馈电路电连接在驱动晶体管和第一晶体管之间，并被配置为根据驱动电流确定第一晶体管的工作状态。

公开(公告)号：US20160174315A1

公开(公告)日：2016-06-16

申请号：US14953410

申请日：2015-11-29

Applicant: Lextar Electronics Corporation

Inventor： Chun-Jong CHANG ,  Jhao-Cyuan HUANG ,  Po-Shen CHEN ,  Chien-Nan YEH

IPC: H05B33/08

CPC classification number: H05B33/0824 ,  H05B33/0809 ,  H05B33/0845

Abstract: An illumination device includes a rectifier circuit, M light-emitting modules, and a control module. The rectifier circuit has a positive output terminal and a negative output terminal, and generates a driving voltage between the positive output terminal and the negative output terminal according to an input power. The M light-emitting modules are coupled between the positive output terminal and the negative output terminal. Each of the M light-emitting modules has a conduction voltage, and includes a light-emitting unit that includes at least one light-emitting diode. The control module is coupled between the rectifier circuit and the M light-emitting modules, and controls the M light-emitting modules to dynamically form S light-emitting diode strings coupled in parallel with each other. A number of the light-emitting units in each of the S light-emitting diode strings is N, in which S×N=M, where M, S, N are positive integers.

Abstract translation: 照明装置包括整流电路，M个发光模块和控制模块。 整流电路具有正输出端子和负输出端子，根据输入功率在正输出端子和负输出端子之间产生驱动电压。 M个发光模块耦合在正输出端和负输出端之间。 M个发光模块中的每一个具有导通电压，并且包括包括至少一个发光二极管的发光单元。 控制模块耦合在整流电路和M个发光模块之间，并且控制M个发光模块以动态地形成彼此并联耦合的S个发光二极管串。 S个发光二极管串中的多个发光单元是N，其中S×N = M，其中M，S，N是正整数。

公开(公告)号：US20150102727A1

公开(公告)日：2015-04-16

申请号：US14325232

申请日：2014-07-07

Applicant: LEXTAR ELECTRONICS CORPORATION

Inventor： Chun-Kuang CHEN ,  Po-Shen CHEN

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0851 ,  H05B33/0854

Abstract: An LED driver circuit includes a first driver, a second driver, a switch, a first detection module, a second detection module and a control module. The first driver provides a first driving current according to a supply voltage. The second driver provides a second driving current according to the supply voltage. The switch is selectively coupled to the first or second driver. An LED emits light according to the first or second driving current. When the switch is coupled to the first driver, the first detection module keeps detecting the first driving current and outputting a first sensing signal. When the switch is coupled to the second driver, the second detection module keeps detecting the second driving current and outputting a second sensing signal. The control module outputs a first or second control signal according to the first or second sensing signal for controlling the switch.

Abstract translation: LED驱动器电路包括第一驱动器，第二驱动器，开关，第一检测模块，第二检测模块和控制模块。 第一驱动器根据电源电压提供第一驱动电流。 第二驱动器根据电源电压提供第二驱动电流。 开关选择性地联接到第一或第二驱动器。 LED根据第一或第二驱动电流发光。 当开关耦合到第一驱动器时，第一检测模块继续检测第一驱动电流并输出第一感测信号。 当开关耦合到第二驱动器时，第二检测模块继续检测第二驱动电流并输出第二感测信号。 控制模块根据用于控制开关的第一或第二感测信号输出第一或第二控制信号。

公开(公告)号：US20140167610A1

公开(公告)日：2014-06-19

申请号：US14058529

申请日：2013-10-21

Applicant: Lextar Electronics Corporation

Inventor： Po-Shen CHEN

IPC: H02J9/06

CPC classification number: H02J9/065 ,  F21S9/022 ,  F21V29/54 ,  F21Y2105/00 ,  F21Y2115/10 ,  H01L35/00 ,  H02J7/007

Abstract: An illumination system includes a light-emitting device, a first switch element, a driving device, a detecting circuit, an arithmetic unit and a power supply unit. The first switch element is configured for receiving an external voltage supplied by an external power source. The driving device is configured for converting the external voltage to a direct-current power signal for driving the light-emitting device to emit light; the detecting circuit is configured for detecting a voltage across the first switch element and converting the voltage to a detecting signal; the arithmetic unit is configured for performing an arithmetic operation on the direct-current power signal and the detecting signal to generate a control signal; and the power supply unit is configured for supplying power for the light-emitting device according to the control signal and driving the light-emitting device to emit light. An illumination driving method is also disclosed herein.

Abstract translation: 照明系统包括发光装置，第一开关元件，驱动装置，检测电路，运算单元和电源单元。 第一开关元件被配置为接收由外部电源提供的外部电压。 驱动装置被配置为将外部电压转换成用于驱动发光装置发光的直流电力信号; 所述检测电路被配置为检测所述第一开关元件两端的电压并将所述电压转换为检测信号; 所述算术单元被配置为对所述直流电力信号和所述检测信号执行算术运算以产生控制信号; 并且电源单元被配置为根据控制信号为发光装置供电，并且驱动发光装置发光。 本文还公开了照明驱动方法。