公开(公告)号：US07183723B2

公开(公告)日：2007-02-27

申请号：US10708212

申请日：2004-02-17

Applicant: Chung-Che Yu ,  Bor-Yuh Chang ,  Shih-Chung Huang

Inventor： Chung-Che Yu ,  Bor-Yuh Chang ,  Shih-Chung Huang

IPC: H05B41/16

CPC classification number: H05B33/0818 ,  H05B33/0845 ,  Y02B20/346

Abstract: A pulse width modulation (PWM) illumination control circuit with a low visual noise for driving a light-emitting diode (LED) is provided. An illumination control pulse-generating unit is used to generate an illumination control pulse signal according to an illumination-adjusting signal. A duty cycle, a phase shift or a frequency of the illumination control pulse signal varies with time within a predetermined scope for controlling a DC/DC converter to drive the light-emitting diode so that the overall visual noise level of the PWM illumination control circuit is improved.

Abstract translation: 提供了用于驱动发光二极管（LED）的具有低视觉噪声的脉宽调制（PWM）照明控制电路。 照明控制脉冲发生单元用于根据照明调节信号产生照明控制脉冲信号。 照明控制脉冲信号的占空比，相移或频率随着时间的变化随着时间的推移而变化，用于控制DC / DC转换器驱动发光二极管，使得PWM照明控制电路的总体视觉噪声水平 改进了

公开(公告)号：US20060083036A1

公开(公告)日：2006-04-20

申请号：US10968857

申请日：2004-10-18

Applicant: Chung-che Yu ,  Shih-chung Huang ,  Chien-pang Hung ,  Chih-shun Lee

Inventor： Chung-che Yu ,  Shih-chung Huang ,  Chien-pang Hung ,  Chih-shun Lee

IPC: H02M3/24

CPC classification number: H02M7/53871 ,  H05B41/2825 ,  H05B41/2828 ,  Y02B20/186 ,  Y02B70/1441

Abstract: An AC/DC inverter provided for transforming a DC power source into an AC power source, wherein the AC signal is used for driving a fluorescent filament. The inverter comprises a half-bridge switch electrically connected to the DC power source, wherein the half-bridge switch outputs the AC signal, a resonance groove circuit electrically connected to the half-bridge switch and the fluorescent filament, wherein the resonance groove circuit is provided for stepping up and filtering the AC signal into a high-voltage AC power source, providing a power for a load, and a controller feeding back an output of the fluorescent filament, providing a wavelength adjusting signal for controlling the conduction and cutting off of the half-bridge switch, such that the fluorescent filament can operate consistently and provide a consistent brightness.

Abstract translation: 一种用于将DC电源变换为AC电源的AC / DC逆变器，其中AC信号用于驱动荧光灯丝。 逆变器包括电连接到DC电源的半桥开关，其中半桥开关输出AC信号，电连接到半桥开关和荧光灯丝的谐振槽电路，其中谐振槽电路是 用于将AC信号升压和过滤成高压AC电源，为负载提供电力，并且控制器反馈荧光灯丝的输出，提供用于控制导通和切断的波长调节信号 半桥开关，使得荧光灯丝可以一致地操作并提供一致的亮度。

公开(公告)号：US09166490B2

公开(公告)日：2015-10-20

申请号：US13366358

申请日：2012-02-06

Applicant: Chung-Che Yu ,  Shian-Sung Shiu ,  Li-Min Lee

Inventor： Chung-Che Yu ,  Shian-Sung Shiu ,  Li-Min Lee

IPC: H05B37/00 ,  H02M3/337 ,  H05B33/08 ,  H02M3/335 ,  H02M1/00

CPC classification number: H02M3/3376 ,  H02M3/33576 ,  H02M2001/0058 ,  H05B33/0815 ,  H05B33/0848 ,  Y02B20/348 ,  Y02B70/1433 ,  Y02B70/1491

Abstract: The present invention provides a full-bridge driving controller and a full-bridge converting circuit, which have the function of soft switch, to provide a DC output voltage. The present invention employs a resonant unit to oscillate the current flowing through the converting circuit at a resonant frequency. The full-bridge driving controller switches four full-bridge transistor switches at an operating frequency higher than the resonant frequency, so as to achieve the function of soft switch.

Abstract translation: 本发明提供具有软开关功能的全桥驱动控制器和全桥转换电路，以提供DC输出电压。 本发明采用谐振单元以谐振频率振荡流过转换电路的电流。 全桥驱动控制器以高于谐振频率的工作频率切换四个全桥晶体管开关，从而实现软开关的功能。

公开(公告)号：US08872441B2

公开(公告)日：2014-10-28

申请号：US13354295

申请日：2012-01-19

Applicant: Chung-Che Yu ,  Li-Min Lee ,  Shian-Sung Shiu

Inventor： Chung-Che Yu ,  Li-Min Lee ,  Shian-Sung Shiu

IPC: H05B37/02 ,  H05B33/08 ,  H03K17/082

CPC classification number: H05B33/0884 ,  H03K17/0822 ,  H05B33/089 ,  Y02B20/341

Abstract: A controller with protection function, for controlling a transistor having a control terminal, a first terminal coupled to a load, a second terminal, is disclosed. The controller comprises a judgment unit and a current control unit. The judgment unit is coupled to the transistor and generates a current reducing signal when a potential of the first terminal of the transistor or a voltage difference between the first terminal and the second terminal of the transistor is higher than a preset value. The current control unit is coupled to the control terminal of the transistor for substantially stabilizing the current flowing through the transistor at a preset current value, and reduces the current flowing from the preset current value when receiving the current reducing signal.

Abstract translation: 公开了一种具有保护功能的控制器，用于控制具有控制端子的晶体管，耦合到负载的第一端子，第二端子。 控制器包括判断单元和电流控制单元。 当晶体管的第一端子的电位或晶体管的第一端子和第二端子之间的电压差高于预设值时，判断单元耦合到晶体管并产生电流减小信号。 电流控制单元耦合到晶体管的控制端子，用于基本稳定以预设电流值流过晶体管的电流，并且当接收电流降低信号时，减小从预置电流值流出的电流。

公开(公告)号：US08824176B2

公开(公告)日：2014-09-02

申请号：US13412636

申请日：2012-03-06

Applicant: Ke Peng ,  Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu

Inventor： Ke Peng ,  Li-Min Lee ,  Chung-Che Yu ,  Shian-Sung Shiu

IPC: H02M1/32 ,  H02M3/337 ,  H02M1/00

CPC classification number: H02M3/3376 ,  H02M1/32 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1441 ,  Y02B70/1491 ,  Y02P80/112

Abstract: The resonant converting circuit comprises a resonant circuit, a current detecting circuit and the resonant controller. The resonant controller controls a power conversion of the resonant circuit for converting an input voltage into an output voltage and the resonant controller comprises an over current judgment unit and an over current protection unit. The over current judgment unit determines whether the resonant current is higher than an over current value according to a current detecting signal generated by the current detecting circuit. The over current protection unit generates a protection signal in response to a determined result of the over current judgment unit and an indication signal indicative of an operating state of the resonant controller. The resonant controller executes a corresponding protecting process in response to the protection signal.

Abstract translation: 谐振转换电路包括谐振电路，电流检测电路和谐振控制器。 谐振控制器控制用于将输入电压转换为输出电压的谐振电路的功率转换，并且谐振控制器包括过电流判断单元和过电流保护单元。 过电流判断单元根据由电流检测电路产生的电流检测信号来判定谐振电流是否高于过电流值。 过电流保护单元响应于过电流判断单元的确定结果和表示谐振控制器的工作状态的指示信号产生保护信号。 谐振控制器响应于保护信号执行相应的保护处理。

公开(公告)号：US08823280B2

公开(公告)日：2014-09-02

申请号：US13567101

申请日：2012-08-06

Applicant: Shian-Sung Shiu ,  Chia-Ming Chan ,  Li-Min Lee ,  Chung-Che Yu

Inventor： Shian-Sung Shiu ,  Chia-Ming Chan ,  Li-Min Lee ,  Chung-Che Yu

IPC: G05F1/00 ,  H05B37/02

CPC classification number: H05B33/0827 ,  Y02B20/341

Abstract: An LED driving circuit comprises a converting circuit, a current regulator, a converting controller and a low dimming protection blocking circuit, is disclosed. The converting circuit is adapted to perform a power conversion to provide a driving voltage for lighting an LED module. The current regulator is coupled to the LED module for regulating a current flowing through the LED module. The current regulator conducts and stops conducting the current flowing through the LED module according to a dimming signal, and executes a protection process when the LED module operates abnormal. The converting controller controls the power conversion of the converting circuit according to a voltage level of at least one connection node of the current regulator and the LED module. The low dimming protection blocking circuit stops the protection process of the current regulator when the driving voltage is lower than a predetermined value.

Abstract translation: LED驱动电路包括转换电路，电流调节器，转换控制器和低调光保护阻断电路。 转换电路适于执行功率转换以提供用于点亮LED模块的驱动电压。 电流调节器耦合到LED模块，用于调节流过LED模块的电流。 电流调节器根据调光信号进行并停止导通LED模块的电流，并在LED模块运行异常时执行保护过程。 转换控制器根据电流调节器和LED模块的至少一个连接节点的电压电平来控制转换电路的功率转换。 当驱动电压低于预定值时，低调光保护阻断电路停止电流调节器的保护处理。

公开(公告)号：US08687332B2

公开(公告)日：2014-04-01

申请号：US13350423

申请日：2012-01-13

Applicant: Chung-Che Yu

Inventor： Chung-Che Yu

IPC: H02H7/00

CPC classification number: H05B33/0887 ,  H03K17/0822 ,  Y02B20/341

Abstract: The present invention provides a transistor circuit with protecting function. The transistor circuit includes a transistor, a voltage detecting unit, a current detecting unit, a temperature detecting unit, and a protecting unit. The voltage detecting unit detects a voltage drop of the transistor and generates an over-voltage protection signal. The current detecting signal detects a current flowing through the transistor and generates an over-current protection signal. The temperature detecting unit detects a temperature of the transistor circuit and generates an over-temperature protection signal. The protecting unit is coupled to the control terminal to control a state of the transistor according to the over-voltage protection signal, the over-current protection signal, and the over-temperature protection signal to reduce the voltage difference between the control terminal and the second terminal, such that the voltage drop of the transistor is decreased or decreased to zero.

Abstract translation: 本发明提供一种具有保护功能的晶体管电路。 晶体管电路包括晶体管，电压检测单元，电流检测单元，温度检测单元和保护单元。 电压检测单元检测晶体管的电压降，并产生过电压保护信号。 电流检测信号检测流过晶体管的电流，并产生过电流保护信号。 温度检测单元检测晶体管电路的温度并产生过温保护信号。 保护单元耦合到控制端子，以根据过电压保护信号，过电流保护信号和过温保护信号控制晶体管的状态，以降低控制端和控制端之间的电压差 第二端子，使得晶体管的电压降降低到零。

公开(公告)号：US08664893B2

公开(公告)日：2014-03-04

申请号：US13218405

申请日：2011-08-25

Applicant: Li-Min Lee ,  Shian-Sung Shiu ,  Chung-Che Yu ,  Hai-Po Li

Inventor： Li-Min Lee ,  Shian-Sung Shiu ,  Chung-Che Yu ,  Hai-Po Li

IPC: H05B37/02

CPC classification number: H05B33/0818 ,  H05B33/0824 ,  H05B33/0827 ,  Y02B20/346

Abstract: The present invention provides a feedback control circuit and an LED driving circuit for using the same, wherein the feedback control circuit receives a dimming signal. The dimming signal is changed between a first state and a second state. When being in the first state, the feedback control circuit controls a converter circuit to drive the LED module for lighting stably. When being in the second state, the feedback control circuit controls the converter circuit to maintain the power conversion of the converter circuit to have an output voltage outputted by the converter circuit maintained at a level close to a lighting threshold voltage of the LED module.

Abstract translation: 本发明提供一种反馈控制电路和使用该反馈控制电路的LED驱动电路，其中反馈控制电路接收调光信号。 调光信号在第一状态和第二状态之间改变。 当处于第一状态时，反馈控制电路控制转换器电路以驱动LED模块以稳定点亮。 当处于第二状态时，反馈控制电路控制转换器电路以维持转换器电路的功率转换，使转换器电路输出的输出电压保持在接近LED模块的点亮阈值电压的水平。

公开(公告)号：US20130271006A1

公开(公告)日：2013-10-17

申请号：US13567101

申请日：2012-08-06

Applicant: Shian-Sung Shiu ,  Chia-Ming Chan ,  Li-Min Lee ,  Chung-Che Yu

Inventor： Shian-Sung Shiu ,  Chia-Ming Chan ,  Li-Min Lee ,  Chung-Che Yu

IPC: H05B37/02

CPC classification number: H05B33/0827 ,  Y02B20/341

Abstract: An LED driving circuit comprises a converting circuit, a current regulator, a converting controller and a low dimming protection blocking circuit, is disclosed. The converting circuit is adapted to perform a power conversion to provide a driving voltage for lighting an LED module. The current regulator is coupled to the LED module for regulating a current flowing through the LED module. The current regulator conducts and stops conducting the current flowing through the LED module according to a dimming signal, and executes a protection process when the LED module operates abnormal. The converting controller controls the power conversion of the converting circuit according to a voltage level of at least one connection node of the current regulator and the LED module. The low dimming protection blocking circuit stops the protection process of the current regulator when the driving voltage is lower than a predetermined value.

Abstract translation: LED驱动电路包括转换电路，电流调节器，转换控制器和低调光保护阻断电路。 转换电路适于执行功率转换以提供用于点亮LED模块的驱动电压。 电流调节器耦合到LED模块，用于调节流过LED模块的电流。 电流调节器根据调光信号进行并停止导通LED模块的电流，并在LED模块运行异常时执行保护过程。 转换控制器根据电流调节器和LED模块的至少一个连接节点的电压电平来控制转换电路的功率转换。 当驱动电压低于预定值时，低调光保护阻断电路停止电流调节器的保护处理。

公开(公告)号：US08446098B2

公开(公告)日：2013-05-21

申请号：US13244653

申请日：2011-09-25

Applicant: Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu ,  Xi Tu ,  Ying Wang

Inventor： Shian-Sung Shiu ,  Li-Min Lee ,  Chung-Che Yu ,  Xi Tu ,  Ying Wang

IPC: H05B41/16

CPC classification number: H05B33/0815 ,  H05B33/0827

Abstract: An LED driving circuit includes a first and a second LED modules, a first and a second switching converters, an extreme voltage detecting and selecting circuit, a current balance circuit and a controller. The first switching converter transforms electric power of an input power supply into a first output voltage for lighting the first LED module. The second switching converter transforms electric power of the input power supply into a second output voltage for lighting the second LED module. The current balance circuit balances the currents flowing through the first and the second LED modules. The extreme voltage detecting and selecting circuit detects the first and the second LED modules and selects to output one of detecting results. The controller controls the transforming of the first switching converter and the second switching converter to light the first and the second LED modules in response to the outputted detecting result.

Abstract translation: LED驱动电路包括第一和第二LED模块，第一和第二开关转换器，极值电压检测和选择电路，电流平衡电路和控制器。 第一开关转换器将输入电源的电力变换为第一输出电压以点亮第一LED模块。 第二开关转换器将输入电源的电力转换成用于照亮第二LED模块的第二输出电压。 电流平衡电路平衡流经第一和第二LED模块的电流。 极端电压检测和选择电路检测第一和第二LED模块，并选择输出检测结果之一。 控制器控制第一开关转换器和第二开关转换器的变换，以响应于输出的检测结果点亮第一和第二LED模块。