公开(公告)号：US20090302911A1

公开(公告)日：2009-12-10

申请号：US12347074

申请日：2008-12-31

申请人： Chen-Hsung Wang ,  Wei-Liang Kung ,  Chung-Cheng Wu

发明人： Chen-Hsung Wang ,  Wei-Liang Kung ,  Chung-Cheng Wu

IPC分类号： H03K3/017

CPC分类号： H03K3/017 ,  H03K3/84 ,  H03K4/502

摘要： A frequency jitter generator and a frequency jitter PWM controller are provided for overcoming the shortcoming that a conventional PWM controller reduces the electromagnetic interference issue by means of varying the operating frequency of the PWM controller based on an input voltage, while resulting in the uncertainty of the range of frequency jitter and the difficulty circuit design due to the effect of the input voltage and the load. The frequency jitter generator and PWM controller adjust the range of frequency jitter by using a signal within a fixed voltage range. The invention not only gets rid of the effect of the input voltage and the loading, but also simplifies the circuit design by fixing the range of frequency jitter no greater than a predetermined percentage regardless of the operating frequency of the PWM controller.

摘要翻译： 提供了一种频率抖动发生器和频率抖动PWM控制器来克服传统PWM控制器通过基于输入电压改变PWM控制器的工作频率来减少电磁干扰问题的缺点，同时导致不确定性 由于输入电压和负载的影响，频率抖动范围和电路设计难度大。 频率抖动发生器和PWM控制器通过使用固定电压范围内的信号来调整频率抖动的范围。 本发明不仅消除了输入电压和负载的影响，而且通过将频率抖动的范围固定为不大于预定百分比来简化电路设计，而不管PWM控制器的工作频率如何。

公开(公告)号：US07855586B2

公开(公告)日：2010-12-21

申请号：US12347074

申请日：2008-12-31

申请人： Chen-Hsung Wang ,  Wei-Liang Kung ,  Chung-Cheng Wu

发明人： Chen-Hsung Wang ,  Wei-Liang Kung ,  Chung-Cheng Wu

IPC分类号： H03K3/017

CPC分类号： H03K3/017 ,  H03K3/84 ,  H03K4/502

摘要： A frequency jitter generator and a frequency jitter PWM controller are provided for overcoming the shortcoming that a conventional PWM controller reduces the electromagnetic interference issue by means of varying the operating frequency of the PWM controller based on an input voltage, while resulting in the uncertainty of the range of frequency jitter and the difficulty circuit design due to the effect of the input voltage and the load. The frequency jitter generator and PWM controller adjust the range of frequency jitter by using a signal within a fixed voltage range. The invention not only gets rid of the effect of the input voltage and the loading, but also simplifies the circuit design by fixing the range of frequency jitter no greater than a predetermined percentage regardless of the operating frequency of the PWM controller.

摘要翻译： 提供了一种频率抖动发生器和频率抖动PWM控制器来克服传统PWM控制器通过基于输入电压改变PWM控制器的工作频率来减少电磁干扰问题的缺点，同时导致不确定性 由于输入电压和负载的影响，频率抖动范围和电路设计难度大。 频率抖动发生器和PWM控制器通过使用固定电压范围内的信号来调整频率抖动的范围。 本发明不仅消除了输入电压和负载的影响，而且通过将频率抖动的范围固定为不大于预定百分比来简化电路设计，而不管PWM控制器的工作频率如何。

公开(公告)号：US08427073B2

公开(公告)日：2013-04-23

申请号：US12786823

申请日：2010-05-25

申请人： Wei Liang Kung ,  Chen-Hsung Wang ,  Shian-Sung Shiu

发明人： Wei Liang Kung ,  Chen-Hsung Wang ,  Shian-Sung Shiu

IPC分类号： H05B37/02

CPC分类号： G09G3/3406 ,  G09G2320/062 ,  G09G2320/0633 ,  H05B33/0827

摘要： A LED driving circuit and a backlight module using the same are disclosed. The LED driving circuit comprises a LED module and a current controlling unit. The LED module has a plurality of the LED strings, each having a driving terminal. The current controlling unit has a plurality of current balancing terminal coupled to the driving terminal, for balancing the currents flowing through the LED strings. The current controlling unit receives a mode switch signal, controls the amount of the currents of the LED strings about a first current value when the mode switch signal represent a first mode, and controls the amount of the currents of the LED strings about a second current value when the mode switch signal represent a second mode.

摘要翻译： 公开了一种LED驱动电路和使用其的背光模块。 LED驱动电路包括LED模块和电流控制单元。 LED模块具有多个LED串，每个LED串具有驱动端子。 电流控制单元具有耦合到驱动端子的多个电流平衡端子，用于平衡流过LED串的电流。 电流控制单元接收模式切换信号，当模式切换信号表示第一模式时，控制LED串的电流量约为第一电流值，并且控制LED串的电流量约为第二电流 当模式切换信号表示第二模式时的值。

公开(公告)号：US20090295776A1

公开(公告)日：2009-12-03

申请号：US12285189

申请日：2008-09-30

申请人： Chung-Che Yu ,  Chen-Hsung Wang

发明人： Chung-Che Yu ,  Chen-Hsung Wang

IPC分类号： G06F3/038

CPC分类号： H05B33/0827 ,  G09G3/342 ,  G09G2320/064 ,  G09G2330/04 ,  G09G2330/12 ,  H05B33/0818 ,  H05B33/0887 ,  Y02B20/341 ,  Y02B20/347

摘要： A light emitting diode driving circuit comprising: a current control unit, a current detection unit, and a driving control unit. The current control unit connects to the current detection unit and comprises a control end, a first input/output end, and a second input/output end to individually produce an electric potential detection signal. The light emitting diode driving circuit determines whether driving the light emitting diode is unusual or not according to the electric potential detection signals to decide to start a protect mechanism. Furthermore, the present invention can receive any types of dimming signals to adjust the light of the light emitting diode.

摘要翻译： 一种发光二极管驱动电路，包括：电流控制单元，电流检测单元和驱动控制单元。 电流控制单元连接到电流检测单元，包括控制端，第一输入/输出端和第二输入/输出端，以分别产生电位检测信号。 发光二极管驱动电路根据电位检测信号来判定驱动发光二极管是否异常，以决定启动保护机构。 此外，本发明可以接收任何类型的调光信号以调节发光二极管的光。

公开(公告)号：US20090267536A1

公开(公告)日：2009-10-29

申请号：US12232125

申请日：2008-09-11

申请人： Chen-Hsung Wang ,  Shu-Ming Chang

发明人： Chen-Hsung Wang ,  Shu-Ming Chang

IPC分类号： H05B41/36

CPC分类号： H05B41/2855

摘要： A fluorescent lamp driver circuit is provided. The fluorescent lamp driver circuit uses reversed current detecting signal to achieve feedback control and circuit protection so as to simplify the driver circuit and reduces the number of the required electronic components. The driver circuit needs a single control unit to control the whole circuit, which not only reduces cost, but also simplifies circuit design.

摘要翻译： 提供荧光灯驱动电路。 荧光灯驱动电路使用反向电流检测信号来实现反馈控制和电路保护，以简化驱动电路并减少所需电子部件的数量。 驱动电路需要一个控制单元来控制整个电路，不仅可以降低成本，而且简化电路设计。

公开(公告)号：US08531112B2

公开(公告)日：2013-09-10

申请号：US13107946

申请日：2011-05-15

申请人： Chen-Hsung Wang

发明人： Chen-Hsung Wang

IPC分类号： H05B37/02 ,  H02H9/04

CPC分类号： H05B33/0887 ,  Y02B20/341

摘要： An LED driving circuit for driving an LED module is provided. The LED module is coupled to an inductor and a flywheel unit to provide a continuous current conduction of the inductor. A terminal of a converting switch is coupled to the LED module, and another terminal thereof is coupled to ground through a current detection unit that generates a current feedback signal to a controller, so as to stabilize a current flowing through the LED module. The LED driving circuit also includes a protecting circuit, which detects a potential of one end of the LED module to generate a detection signal and makes/has the converting switch to be turned off responsive to the detection signal. If the converting switch is turned off, driving of the LED module is stopped.

摘要翻译： 提供一种用于驱动LED模块的LED驱动电路。 LED模块耦合到电感器和飞轮单元以提供电感器的连续电流传导。 转换开关的端子耦合到LED模块，并且其另一端子通过电流检测单元耦合到地，该电流检测单元向控制器产生电流反馈信号，以便稳定流过LED模块的电流。 LED驱动电路还包括保护电路，其检测LED模块的一端的电位以产生检测信号，并使得/使转换开关响应于检测信号而被切断。 如果转换开关关闭，则LED模块的驱动停止。

公开(公告)号：US07965047B2

公开(公告)日：2011-06-21

申请号：US12285183

申请日：2008-09-30

申请人： Chen-Hsung Wang

发明人： Chen-Hsung Wang

IPC分类号： H05B41/36

CPC分类号： H05B41/3925 ,  H05B41/2855

摘要： A fluorescent lamp driving circuit is provided. The fluorescent lamp driving circuit collects a pulse-width-modulation and a MOS switch in a single package. The pulse-width-modulation for driving multiple lamps only needs two pins to achieve feedback control and protection control. Thereby the pins required by the pulse-width-modulation are decreased substantially, and the electronic elements needed for feedback and protection control are also reduced, and the overall circuit design is simplified.

摘要翻译： 提供荧光灯驱动电路。 荧光灯驱动电路在单个封装中收集脉冲宽度调制和MOS开关。 用于驱动多个灯的脉宽调制只需要两个引脚来实现反馈控制和保护控制。 因此，脉冲宽度调制所需的引脚基本上减小，反馈和保护控制所需的电子元件也减少了，整个电路设计得到了简化。

公开(公告)号：US08344634B2

公开(公告)日：2013-01-01

申请号：US12689232

申请日：2010-01-19

申请人： Chen-Hsung Wang

发明人： Chen-Hsung Wang

IPC分类号： H05B37/02

CPC分类号： H05B41/2828 ,  Y02B20/186

摘要： A lamp driving apparatus includes a switch module, a controller, a resonant module, and a level shift circuit. The switch module includes a high side transistor switch and a low side transistor switch connected in series between an input power source and a common level. The controller controls the high side and the low side transistor switches to control the power from the input power source transmitted through the switch module. The resonant module coupled to the switch module converts the power into an AC output signal to drive a lamp. The level shift circuit generates a high side control signal based on an voltage level of a connecting node of the high side and the low side transistor switches, the level shift voltage, and a control signal generated by the controller so as to control the high transistor switch.

摘要翻译： 灯驱动装置包括开关模块，控制器，谐振模块和电平移位电路。 开关模块包括在输入电源和公共电平之间串联连接的高侧晶体管开关和低侧晶体管开关。 控制器控制高侧和低侧晶体管开关，以控制通过开关模块传输的输入电源的功率。 耦合到开关模块的谐振模块将功率转换成AC输出信号以驱动灯。 电平移位电路基于高侧的连接节点和低侧晶体管开关的电压电平，电平移位电压和由控制器产生的控制信号产生高侧控制信号，以便控制高电平 开关。

公开(公告)号：US08742692B2

公开(公告)日：2014-06-03

申请号：US13239401

申请日：2011-09-22

申请人： Chen-Hsung Wang ,  Chia-Ming Chan

发明人： Chen-Hsung Wang ,  Chia-Ming Chan

IPC分类号： H05B37/02

CPC分类号： H05B33/0887 ,  H02H9/02 ,  H02H9/041 ,  Y02B20/341

摘要： An LED driving circuit, adapted to drive an LED module, is disclosed. The LED driving circuit comprises a converting circuit, a converting controller, and a short-circuit protection circuit. The converting circuit, having a capacitor coupled to the LED module, is coupled to an input power source to proceed converting operation to supply an output current for driving the LED module. The converting controller controls the converting circuit to provide a stable current flowing through the LED module. The short-circuit protection circuit is coupled to the LED module in series and cuts the current flowing through the LED module off when detecting that the current higher than a current protection value.

摘要翻译： 公开了一种用于驱动LED模块的LED驱动电路。 LED驱动电路包括转换电路，转换控制器和短路保护电路。 具有耦合到LED模块的电容器的转换电路耦合到输入电源以进行转换操作以提供用于驱动LED模块的输出电流。 转换控制器控制转换电路以提供流过LED模块的稳定电流。 当检测到电流高于电流保护值时，短路保护电路串联耦合到LED模块并切断流过LED模块的电流。

公开(公告)号：US20130009547A1

公开(公告)日：2013-01-10

申请号：US13286227

申请日：2011-11-01

申请人： Shian-Sung Shiu ,  Chen-Hsung Wang

发明人： Shian-Sung Shiu ,  Chen-Hsung Wang

IPC分类号： H05B37/02

CPC分类号： H05B33/0818 ,  H05B33/0887 ,  H05B33/089 ,  Y02B20/341

摘要： An LED driving circuit with open-circuit protection is disclosed. The LED driving circuit pulls down an operation voltage supplied to a converting controller of the LED driving circuit when a voltage across an LED module of the LED driving circuit is too high, so as to stop the converting controller operating and further latch the converting controller at the protection state until that the converting controller is restarted or the condition of the voltage supplied to the LED module being too high is solved.

摘要翻译： 公开了一种具有开路保护功能的LED驱动电路。 当LED驱动电路的LED模块两端的电压过高时，LED驱动电路拉低提供给LED驱动电路的转换控制器的工作电压，从而停止转换控制器的操作，并进一步将转换控制器锁存在 直到转换控制器重新启动或提供给LED模块的电压条件太高的保护状态得以解决。