公开(公告)号：US20170071037A1

公开(公告)日：2017-03-09

申请号：US15008490

申请日：2016-01-28

Applicant: Lextar Electronics Corporation

Inventor： En-Min Wu ,  Hsien-Chih Ho

IPC: H05B33/08 ,  F21V23/00

CPC classification number: H05B33/0815 ,  F21K9/232 ,  F21K9/238 ,  F21V23/005 ,  F21V23/02 ,  F21Y2115/10 ,  H05B33/0845 ,  H05B33/0887

Abstract: A light-emitting diode (LED) device including an LED module and a driver is provided. The LED module includes a voltage sensing module and an LED. The voltage sensing module generates a reference voltage. The driver includes a power converting module, a current processing module, a feedback module and a controller module. The power converting module converts an alternating current (AC) into a driving current for driving the LED to emit a light. The current processing module converts the driving current into a sensing voltage. The feedback module compares the sensing voltage with a reference voltage and outputs a level signal according to a magnitude relationship of the sensing voltage and the reference voltage. The controller module outputs a pulse width modulation (PWM) signal to the power converting module according to the level signal. The power converting module controls the magnitude of the driving current according to the PWM signal.

Abstract translation: 提供了包括LED模块和驱动器的发光二极管（LED）装置。 LED模块包括电压感测模块和LED。 电压检测模块产生参考电压。 驱动器包括电源转换模块，当前处理模块，反馈模块和控制器模块。 电力转换模块将交流电（AC）转换成用于驱动LED发光的驱动电流。 当前的处理模块将驱动电流转换成感测电压。 反馈模块将感测电压与参考电压进行比较，并根据感测电压和参考电压的大小关系输出电平信号。 控制器模块根据电平信号向功率转换模块输出脉宽调制（PWM）信号。 功率转换模块根据PWM信号控制驱动电流的大小。

公开(公告)号：US08704452B2

公开(公告)日：2014-04-22

申请号：US13682376

申请日：2012-11-20

Applicant: Lextar Electronics Corporation

Inventor： En-Min Wu

IPC: H05B37/02

CPC classification number: H05B37/02 ,  H05B33/0845 ,  H05B37/0245 ,  H05B39/085 ,  H05B41/3927

Abstract: The present application relates to an illumination device having a light source module, a power supply module, a driving module, a control module and a start module. The driving module outputs a driving current to the light source module based on a power supply from the power supply module. The control module controls the magnitude of the driving current based on a first voltage signal generated by the power source module. After receiving the first voltage signal, the control module controls the driving module to steadily increase the driving current in a first stage output. After receiving the first voltage signal again, the control module controls the driving module to output a constant driving current equal to the driving current at the end of the first stage.

Abstract translation: 本申请涉及具有光源模块，电源模块，驱动模块，控制模块和启动模块的照明装置。 驱动模块基于来自电源模块的电源向光源模块输出驱动电流。 控制模块基于由电源模块产生的第一电压信号来控制驱动电流的大小。 在接收到第一电压信号之后，控制模块控制驱动模块稳定地增加第一级输出中的驱动电流。 在再次接收到第一电压信号之后，控制模块控制驱动模块在第一级结束时输出等于驱动电流的恒定驱动电流。

公开(公告)号：US09900940B2

公开(公告)日：2018-02-20

申请号：US15008490

申请日：2016-01-28

Applicant: Lextar Electronics Corporation

Inventor： En-Min Wu ,  Hsien-Chih Ho

IPC: H05B33/08 ,  F21K9/238 ,  F21V23/00 ,  F21Y115/10 ,  F21V23/02 ,  F21K9/232

CPC classification number: H05B33/0815 ,  F21K9/232 ,  F21K9/238 ,  F21V23/005 ,  F21V23/02 ,  F21Y2115/10 ,  H05B33/0845 ,  H05B33/0887

Abstract: A light-emitting diode (LED) device including an LED module and a driver is provided. The LED module includes a voltage sensing module and an LED. The voltage sensing module generates a reference voltage. The driver includes a power converting module, a current processing module, a feedback module and a controller module. The power converting module converts an alternating current (AC) into a driving current for driving the LED to emit a light. The current processing module converts the driving current into a sensing voltage. The feedback module compares the sensing voltage with a reference voltage and outputs a level signal according to a magnitude relationship of the sensing voltage and the reference voltage. The controller module outputs a pulse width modulation (PWM) signal to the power converting module according to the level signal. The power converting module controls the magnitude of the driving current according to the PWM signal.

公开(公告)号：US20140306616A1

公开(公告)日：2014-10-16

申请号：US14077261

申请日：2013-11-12

Applicant: Lextar Electronics Corporation

Inventor： En-Min Wu

IPC: H05B33/08

CPC classification number: H05B33/0815

Abstract: An LED drive circuit applied between an LED load and an AC power supply is provided. The circuit includes a rectifier, a power conversion module, a voltage regulator, a photo coupler and a controller. The rectifier rectifies and converts an AC voltage outputted from the AC power supply into a DC voltage. The power conversion module converts the DC voltage into a first drive voltage and a second drive voltage. The first drive voltage drives the LED load. The voltage regulator receives and processes the second drive voltage with a voltage regulating process to generate a third drive voltage not exceeding a maximum voltage rating of the controller. The photo coupler generates a feedback signal according to a signal outputted from the LED load. The controller receives the third drive voltage and generates a control signal to control the power conversion module according to the feedback signal.

Abstract translation: 提供了应用在LED负载和交流电源之间的LED驱动电路。 电路包括整流器，电源转换模块，电压调节器，光耦合器和控制器。 整流整流并将从交流电源输出的交流电压转换为直流电压。 电力转换模块将DC电压转换成第一驱动电压和第二驱动电压。 第一个驱动电压驱动LED负载。 电压调节器通过电压调节过程接收和处理第二驱动电压，以产生不超过控制器的最大额定电压的第三驱动电压。 光耦合器根据从LED负载输出的信号产生反馈信号。 控制器接收第三驱动电压并产生控制信号，以根据反馈信号控制功率转换模块。

公开(公告)号：US09320092B2

公开(公告)日：2016-04-19

申请号：US14158872

申请日：2014-01-20

Applicant: Lextar Electronics Corporation

Inventor： En-Min Wu

IPC: H05B37/02 ,  H05B33/08

CPC classification number: H05B33/0815

Abstract: An illumination device includes a light-emitting diode (LED) lamp and a LED dimming circuit. The LED dimming circuit includes a power converting module, a sensing unit and a dimming module. The power converting module is used to generate a driving voltage to drive the LED lamp. The sensing unit is used to generate a sensing voltage signal. The dimming module includes an input interface, a dimming signal generator and an isolating unit. The input interface is used to receive a dimming control signal. The dimming signal generator is used to output a first feedback signal based on the sensing voltage signal and the dimming control signal. The isolating unit is used to receive the first feedback signal and output a second feedback signal to the power converting module so as to control a driving current.

Abstract translation: 照明装置包括发光二极管（LED）灯和LED调光电路。 LED调光电路包括电源转换模块，感测单元和调光模块。 电源转换模块用于产生驱动LED灯的驱动电压。 感测单元用于产生感测电压信号。 调光模块包括输入接口，调光信号发生器和隔离单元。 输入接口用于接收调光控制信号。 调光信号发生器用于基于感测电压信号和调光控制信号输出第一反馈信号。 隔离单元用于接收第一反馈信号并将第二反馈信号输出到功率转换模块，以便控制驱动电流。

公开(公告)号：US09030128B2

公开(公告)日：2015-05-12

申请号：US14077261

申请日：2013-11-12

Applicant: Lextar Electronics Corporation

Inventor： En-Min Wu

IPC: H05B37/02 ,  H05B33/08

CPC classification number: H05B33/0815

Abstract: An LED drive circuit applied between an LED load and an AC power supply is provided. The circuit includes a rectifier, a power conversion module, a voltage regulator, a photo coupler and a controller. The rectifier rectifies and converts an AC voltage outputted from the AC power supply into a DC voltage. The power conversion module converts the DC voltage into a first drive voltage and a second drive voltage. The first drive voltage drives the LED load. The voltage regulator receives and processes the second drive voltage with a voltage regulating process to generate a third drive voltage not exceeding a maximum voltage rating of the controller. The photo coupler generates a feedback signal according to a signal outputted from the LED load. The controller receives the third drive voltage and generates a control signal to control the power conversion module according to the feedback signal.

Abstract translation: 提供了应用在LED负载和交流电源之间的LED驱动电路。 电路包括整流器，电源转换模块，电压调节器，光耦合器和控制器。 整流整流并将从交流电源输出的交流电压转换为直流电压。 电力转换模块将DC电压转换成第一驱动电压和第二驱动电压。 第一个驱动电压驱动LED负载。 电压调节器通过电压调节过程接收和处理第二驱动电压，以产生不超过控制器的最大额定电压的第三驱动电压。 光耦合器根据从LED负载输出的信号产生反馈信号。 控制器接收第三驱动电压并产生控制信号，以根据反馈信号控制功率转换模块。