公开(公告)号：US07436126B2

公开(公告)日：2008-10-14

申请号：US11608080

申请日：2006-12-07

申请人： Ta-yung Yang

发明人： Ta-yung Yang

IPC分类号： H05B37/02

CPC分类号： H05B41/2856 ,  Y10S315/05

摘要： A low cost ballast circuit for fluorescent lamp is provided. A fluorescent lamp is connected in series with a resonant circuit having a transformer. A first switch and a second switch are coupled to switch the resonant circuit. A first winding of the transformer is connected in series with a capacitor to form the resonant circuit. A second winding and a third winding of the transformer are used for generating control signals in response to a switching current of the resonant circuit. The first switch and the second switch are controlled in response to the control signals. Furthermore, soft switching operation for the first switch and the second switch can be achieved by the present invention.

摘要翻译： 提供了一种用于荧光灯的低成本镇流器电路。 荧光灯与具有变压器的谐振电路串联连接。 耦合第一开关和第二开关以切换谐振电路。 变压器的第一绕组与电容器串联连接以形成谐振电路。 变压器的第二绕组和第三绕组用于响应谐振电路的开关电流产生控制信号。 响应于控制信号来控制第一开关和第二开关。 此外，通过本发明可以实现第一开关和第二开关的软开关操作。

公开(公告)号：US20080123372A1

公开(公告)日：2008-05-29

申请号：US11605302

申请日：2006-11-29

申请人： Ta-yung Yang

发明人： Ta-yung Yang

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M2001/0022

摘要： A control circuit includes a switch coupled to a transformer of a power converter for switching the transformer. A sampling circuit is coupled to the transformer to sample a reflected voltage of the transformer to generate a voltage signal. A switching circuit generates a switching signal to control the switch in response to the voltage signal. The minimum on time of the switching signal is changed in response to the change of an input voltage of the power converter. Because the pulse width of the reflected voltage is narrower at light load, the minimum on time of the switching signal helps the reflected voltage detection.

摘要翻译： 控制电路包括耦合到用于切换变压器的功率转换器的变压器的开关。 采样电路耦合到变压器以对变压器的反射电压进行采样以产生电压信号。 开关电路产生开关信号以响应于电压信号来控制开关。 响应于功率转换器的输入电压的变化而改变开关信号的最小导通时间。 由于反射电压的脉冲宽度在轻载时较窄，所以开关信号的最小导通时间有助于反射电压的检测。

公开(公告)号：US20080088249A1

公开(公告)日：2008-04-17

申请号：US11535988

申请日：2006-09-28

申请人： Jea-Sen Lin ,  Ta-yung Yang

发明人： Jea-Sen Lin ,  Ta-yung Yang

IPC分类号： H05B41/36

CPC分类号： H05B41/2825 ,  Y10S315/05 ,  Y10S315/07

摘要： A lower-cost ballast circuit for fluorescent lamps is provided. A resonant circuit is formed by a series connection of an inductor and a capacitor to operate the fluorescent lamp. A first circuit and a second circuit are coupled to switch the resonant circuit. Taking the first circuit for instance, a first resistor is connected in series with a first switch for generating a first control signal in response to a switching current of the first switch. The first switch is turned on once the first control signal is lower than a first zero-threshold. After a quarter resonant period of the resonant circuit, the first switch is turned off once the first control signal is lower than a first threshold. Therefore, a soft switching for the first switch is achieved.

摘要翻译： 提供了一种用于荧光灯的低成本镇流器电路。 谐振电路由电感器和电容器的串联连接形成，以操作荧光灯。 耦合第一电路和第二电路以切换谐振电路。 以第一电路为例，第一电阻器与第一开关串联连接，用于响应于第一开关的开关电流产生第一控制信号。 一旦第一控制信号低于第一零阈值，第一开关被接通。 在谐振电路的四分之一谐振周期之后，一旦第一控制信号低于第一阈值，第一开关被断开。 因此，实现了第一开关的软开关。

公开(公告)号：US07285837B2

公开(公告)日：2007-10-23

申请号：US10905677

申请日：2005-01-17

申请人： Chih-Feng Huang ,  Tuo-Hsin Chien ,  Jenn-yu G. Lin ,  Ta-yung Yang

发明人： Chih-Feng Huang ,  Tuo-Hsin Chien ,  Jenn-yu G. Lin ,  Ta-yung Yang

IPC分类号： H01L23/58

CPC分类号： H01L27/0255

摘要： A structure of an electrostatic discharge (ESD) device integrated with a pad is provided. The ESD device is integrated with the pad and formed under the pad. By using the area under the pad, the ESD device does not occupy additional space of an integrated circuit. Furthermore, since the pad is a large, plate, and ideal conductor, the connected pad and the ESD device are capable of distributing current in the ESD device averagely.

摘要翻译： 提供了与焊盘集成的静电放电（ESD）器件的结构。 ESD器件与焊盘集成并形成在焊盘下方。 通过使用垫下的区域，ESD器件不占用集成电路的额外空间。 此外，由于焊盘是大的，板状的和理想的导体，所以连接的焊盘和ESD器件能够平均地在ESD器件中分配电流。

公开(公告)号：US20070171682A1

公开(公告)日：2007-07-26

申请号：US11338791

申请日：2006-01-25

申请人： Ta-yung Yang ,  Pei-Hsuan Cheng

发明人： Ta-yung Yang ,  Pei-Hsuan Cheng

IPC分类号： H02M3/335

CPC分类号： H02M1/44 ,  H02M3/335 ,  H02M2001/0006

摘要： A switching regulator includes a transformer having a primary winding and an auxiliary winding connected to the supply rail of the switching regulator. The primary winding is coupled to the positive supply rail. The auxiliary winding is coupled to the negative supply rail. A switch is connected in series with the primary winding and the auxiliary winding for switching the transformer. A control circuit is coupled to the switch and the auxiliary winding to generate a switching signal for switching the switch and regulating the output of the switching regulator. A supplied capacitor is connected to the control circuit to supply the power to the control circuit. The auxiliary winding having a leakage inductor stores a stored energy when the switch is on. A diode is coupled from the negative supply rail to the supplied capacitor. The stored energy of the leakage inductor is discharged to the supplied capacitor through the diode once the switch is off. The connection of the transformer and the switch improves the efficiency and reduces the EMI.

摘要翻译： 开关调节器包括具有初级绕组和连接到开关调节器的电源轨的辅助绕组的变压器。 初级绕组耦合到正电源轨。 辅助绕组耦合到负电源轨。 开关与初级绕组和辅助绕组串联连接，用于切换变压器。 控制电路耦合到开关和辅助绕组，以产生用于切换开关并调节开关调节器的输出的开关信号。 所提供的电容器连接到控制电路以向控制电路供电。 具有漏电感的辅助绕组在开关接通时存储存储的能量。 二极管从负电源轨耦合到所提供的电容器。 一旦开关断开，漏电感器的存储能量通过二极管放电到所提供的电容器。 变压器和开关的连接提高了效率并降低了EMI。

公开(公告)号：US20070139980A1

公开(公告)日：2007-06-21

申请号：US11679729

申请日：2007-02-27

申请人： Ta-yung Yang ,  Guo-Kiang Hung ,  Song-Yi Lin

发明人： Ta-yung Yang ,  Guo-Kiang Hung ,  Song-Yi Lin

IPC分类号： H02M1/12

CPC分类号： H02M3/33523 ,  H02M1/44

摘要： A switching controller having frequency hopping is used for reducing the EMI of a power supply. A pattern generator generates a digital pattern code in response to a clock signal. An oscillator generates an oscillation signal for determining a switching frequency of a switching signal. A programmable capacitor coupled to the oscillator modulates the switching frequency in response to the variation of the digital pattern code. An attenuator connected to a voltage feedback loop attenuates a feedback signal. The feedback signal controls the pulse width of the switching signal. A programmable resistor coupled to the attenuator determines an attenuation rate of the attenuator in response to the digital pattern code. The attenuation rate is increased as the switching frequency increases. The pulse width of the switching signal is thus reduced, which compensates the decrease of the switching period and keeps the output power and the output voltage constant.

摘要翻译： 具有跳频的开关控制器用于降低电源的EMI。 模式发生器响应于时钟信号产生数字模式码。 振荡器产生用于确定开关信号的开关频率的振荡信号。 耦合到振荡器的可编程电容器响应于数字图形码的变化来调制开关频率。 连接到电压反馈环路的衰减器衰减反馈信号。 反馈信号控制开关信号的脉冲宽度。 耦合到衰减器的可编程电阻器响应于数字图案码确定衰减器的衰减率。 衰减率随着开关频率的增加而增加。 因此，开关信号的脉冲宽度被减小，这补偿了开关周期的减小并保持输出功率和输出电压恒定。

公开(公告)号：US20070132440A1

公开(公告)日：2007-06-14

申请号：US11298023

申请日：2005-12-08

申请人： Ta-yung Yang

发明人： Ta-yung Yang

IPC分类号： G05F3/00

CPC分类号： G05F1/562

摘要： A control circuit having frequency hopping capability is used for reducing the EMI of a power supply. A switching circuit is coupled to a feedback circuit to generate a switching signal for regulating an output of the power supply. A first oscillator determines the switching frequency of the switching signal. A second oscillator is coupled to the first oscillator to modulate the switching frequency of the switching signal for reducing the EMI of the power supply. An output of the second oscillator controls the attenuation rate of the feedback signal of the feedback circuit. Therefore, even if the switching frequency is hopped, the output power and the output voltage can still be kept constant.

摘要翻译： 具有跳频能力的控制电路用于降低电源的EMI。 开关电路耦合到反馈电路以产生用于调节电源的输出的开关信号。 第一振荡器确定开关信号的开关频率。 第二振荡器耦合到第一振荡器以调制开关信号的开关频率以减小电源的EMI。 第二振荡器的输出控制反馈电路的反馈信号的衰减率。 因此，即使跳跃开关频率，输出功率和输出电压仍然可以保持恒定。

公开(公告)号：US07218060B1

公开(公告)日：2007-05-15

申请号：US11370280

申请日：2006-03-07

申请人： Jea-Sen Lin ,  Ta-yung Yang

发明人： Jea-Sen Lin ,  Ta-yung Yang

IPC分类号： H05B37/02

CPC分类号： H05B41/295

摘要： A flyback ballast for fluorescent lamps is provided. A transformer is utilized to control the power delivered to the lamp. A first switch is coupled to the first winding of the transformer. A first filter is coupled to a second filter through a first terminal pair of a lamp. The second switch is coupled to the third switch through a second terminal pair of the lamp. A switching signal is provided to the first switch to control the power of the transformer delivered to the filters. A second switching signal and a third switching signal are provided to the second switch and the third switch respectively to control the power delivered to the lamp. No glow discharge is occurred during the preheating interval.

摘要翻译： 提供荧光灯的回扫镇流器。 变压器用于控制传递到灯的功率。 第一开关耦合到变压器的第一绕组。 第一滤光器通过灯的第一端子对耦合到第二滤光器。 第二开关通过灯的第二端子对耦合到第三开关。 开关信号被提供给第一开关以控制输送到滤波器的变压器的功率。 第二开关信号和第三开关信号分别提供给第二开关和第三开关，以控制输送到灯的功率。 在预热间隔期间不发生辉光放电。

公开(公告)号：US20070081599A1

公开(公告)日：2007-04-12

申请号：US11245650

申请日：2005-10-07

申请人： Ta-yung Yang

发明人： Ta-yung Yang

IPC分类号： H04B3/00 ,  H04L7/00

CPC分类号： G01R31/31917 ,  G01R31/31924 ,  H02M3/33523

摘要： A method and apparatus of sampling reflected voltage signal of a transformer is proposed. Sampling signals are used for generating hold voltages by sequentially sampling the reflected voltage from the transformer. A buffer circuit generates a buffer signal from the higher voltage of hold voltages. A sampling switch periodically conducts the buffer signal to produce a feedback signal according to an output of the buffer circuit. The feedback signal is proportional to output voltage of the transformer. A threshold signal added by the reflected voltage signal produces a level-shift signal. A discharge-time signal is enabled once the switching signal is disabled. The discharge-time signal is disabled once the level-shift signal is lower than output of the buffer circuit. The pulse width of the discharge-time signal is correlated to the discharge time of the transformer. The sampling signals are enabled to generate hold voltages when discharge-time signal is enabled.

摘要翻译： 提出了一种对变压器的反射电压信号进行采样的方法和装置。 采样信号用于通过对来自变压器的反射电压进行顺序采样来产生保持电压。 缓冲电路从较高电压的保持电压产生缓冲信号。 采样开关周期性地进行缓冲器信号，根据缓冲电路的输出产生反馈信号。 反馈信号与变压器的输出电压成比例。 由反射电压信号相加的阈值信号产生电平移位信号。 一旦开关信号被禁止，放电时间信号被使能。 一旦电平移位信号低于缓冲电路的输出，放电时间信号被禁止。 放电时间信号的脉冲宽度与变压器的放电时间相关。 当使能放电时间信号时，使能采样信号产生保持电压。

公开(公告)号：US20070052030A1

公开(公告)日：2007-03-08

申请号：US11222707

申请日：2005-09-08

申请人： Chih-Feng Huang ,  Ta-yung Yang ,  Jenn-yu Lin ,  Tuo-Hsin Chien

发明人： Chih-Feng Huang ,  Ta-yung Yang ,  Jenn-yu Lin ,  Tuo-Hsin Chien

IPC分类号： H01L23/62

CPC分类号： H01L27/0262

摘要： An electrostatic discharge (ESD) device with a parasitic silicon controlled rectifier (SCR) structure and controllable holding current is provided. A first distance is kept between a first N+ doped region and a first P+ doped region, and a second distance is kept between a second P+ doped region and a third N+ doped region. In addition, the holding current of the ESD device can be set to a specific value by modulating the first distance and the second distance. The holding current is in inverse proportion to the first distance and the second distance.

摘要翻译： 提供具有寄生可控硅整流器（SCR）结构和可控保持电流的静电放电（ESD）器件。 在第一N +掺杂区域和第一P +掺杂区域之间保持第一距离，并且在第二P +掺杂区域和第三N +掺杂区域之间保持第二距离。 此外，通过调制第一距离和第二距离，可以将ESD装置的保持电流设定为特定值。 保持电流与第一距离和第二距离成反比。