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21. 发明申请

US20070133231A1 Control circuit of power converter having adaptive bias for detecting reflected voltage of transformer 有权
标题翻译：具有自适应偏置检测变压器反射电压的功率转换器控制电路
公开(公告)号：US20070133231A1
公开(公告)日：2007-06-14
申请号：US11288726
申请日：2005-11-28
申请人： Ta-yung Yang , Chuh-Ching Li , Feng Tsao
发明人： Ta-yung Yang , Chuh-Ching Li , Feng Tsao
IPC分类号： H01F38/04
CPC分类号： H02M3/33523 , H01F27/38
摘要： A control circuit for detecting the reflected voltage of a transformer is provided. A detection circuit is developed for sampling the reflected voltage. Because the pulse width of the reflected voltage is narrower at light load, a bias circuit is utilized for producing a bias signal to help the reflected voltage detection. Furthermore, a blanking circuit ensures a minimum pulse width of the reflected voltage.
摘要翻译：提供了用于检测变压器的反射电压的控制电路。开发了用于对反射电压进行采样的检测电路。因为反射电压的脉冲宽度在轻负载时较窄，因此偏置电路用于产生偏置信号以帮助反射电压检测。此外，消隐电路确保反射电压的最小脉冲宽度。

22. 发明授权

US08432109B2 Method and apparatus for a LED driver with high power factor 有权
标题翻译：具有高功率因数的LED驱动器的方法和装置
公开(公告)号：US08432109B2
公开(公告)日：2013-04-30
申请号：US13073095
申请日：2011-03-28
申请人： Ta-Yung Yang , Li Lin , Chih-Hsien Hsieh , Chuh-Ching Li , Chi-Yin Lo , Kuo-Hsiem Huang
发明人： Ta-Yung Yang , Li Lin , Chih-Hsien Hsieh , Chuh-Ching Li , Chi-Yin Lo , Kuo-Hsiem Huang
IPC分类号： H05B37/02
CPC分类号： H05B33/0815
摘要： A control circuit of a LED driver according to the present invention comprises an output circuit, an input circuit and an input-voltage detection circuit. The output circuit generates a switching signal to produce an output current for driving at least one LED in response to a feedback signal. The switching signal is coupled to switch a transformer. The input circuit samples an input signal for generating the feedback signal. The input signal is correlated to the output current of the LED driver. The input-voltage detection circuit generates an input-voltage signal in response to an input voltage of the LED driver. The input circuit will not sample the input signal when the input-voltage signal is lower than a threshold. The control circuit can eliminate the need of the input capacitor for improving the reliability of the LED driver.
摘要翻译：根据本发明的LED驱动器的控制电路包括输出电路，输入电路和输入电压检测电路。输出电路产生开关信号以产生用于响应于反馈信号驱动至少一个LED的输出电流。开关信号被耦合以切换变压器。输入电路对输入信号进行采样以产生反馈信号。输入信号与LED驱动器的输出电流相关。输入电压检测电路根据LED驱动器的输入电压产生输入电压信号。当输入电压信号低于阈值时，输入电路不会对输入信号进行采样。控制电路可以消除输入电容器的需要，提高LED驱动器的可靠性。

23. 发明授权

US07701734B2 Detection circuit to detect input voltage of transformer and detecting method for the same 有权
标题翻译：用于检测变压器输入电压的检测电路及其检测方法
公开(公告)号：US07701734B2
公开(公告)日：2010-04-20
申请号：US11465364
申请日：2006-08-17
申请人： Chuh-Ching Li , Ta-yung Yang
发明人： Chuh-Ching Li , Ta-yung Yang
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M2001/0009
摘要： A circuit and a method for detecting a voltage of a transformer are provided. The circuit includes a current output circuit coupled to a winding of a transformer to generate a current signal. A current-to-voltage circuit is coupled to the current output circuit to generate a voltage signal in response to the current signal. A sample-and-hold circuit generates an output signal by sampling the voltage signal. An input voltage is applied to the transformer. The output signal is correlated to the input voltage of the transformer.
摘要翻译：提供了用于检测变压器电压的电路和方法。电路包括耦合到变压器绕组的电流输出电路以产生电流信号。电流 - 电压电路耦合到电流输出电路以响应于电流信号产生电压信号。采样和保持电路通过对电压信号进行采样来产生输出信号。输入电压施加到变压器。输出信号与变压器的输入电压相关。

24. 发明授权

US07671578B2 Detection circuit for sensing the input voltage of transformer 有权
标题翻译：用于感应变压器输入电压的检测电路
公开(公告)号：US07671578B2
公开(公告)日：2010-03-02
申请号：US11456573
申请日：2006-07-11
申请人： Chuh-Ching Li , Ta-yung Yang
发明人： Chuh-Ching Li , Ta-yung Yang
IPC分类号： G01R31/02 , H02M3/335
CPC分类号： G01R15/183
摘要： A circuit for detecting an input voltage of a transformer is provided. The circuit includes a current source circuit coupled to a winding of a transformer. A current-to-voltage circuit is coupled to the current source circuit to generate a first voltage in response to a current outputted from the current source circuit. A sample-and-hold circuit generates an output voltage by sampling the first voltage. The transformer is coupled to the input voltage, and the output voltage is correlated to the input voltage of the transformer.
摘要翻译：提供了用于检测变压器的输入电压的电路。电路包括耦合到变压器绕组的电流源电路。电流 - 电压电路耦合到电流源电路以响应于从电流源电路输出的电流产生第一电压。采样保持电路通过对第一电压进行采样来产生输出电压。变压器耦合到输入电压，输出电压与变压器的输入电压相关。

25. 发明申请

US20060056204A1 Switching control circuit for primary-side controlled power converters 有权
标题翻译：初级侧电源转换器的开关控制电路
公开(公告)号：US20060056204A1
公开(公告)日：2006-03-16
申请号：US10943318
申请日：2004-09-16
申请人： Ta-yung Yang , Guo-Kiang Hung , Jenn-yu Lin , Chuh-Ching Li , Shao-Wei Chiu
发明人： Ta-yung Yang , Guo-Kiang Hung , Jenn-yu Lin , Chuh-Ching Li , Shao-Wei Chiu
IPC分类号： H02M5/27
CPC分类号： H02M3/33507
摘要： The present invention discloses a switching control circuit for a primary-side controlled power converter. A voltage-waveform detector produces a voltage-feedback signal and a discharge-time signal. A current-waveform detector generates a current-waveform signal by measuring a primary-side switching current. An integrator generates a current-feedback signal by integrating the current-waveform signal with the discharge time. A time constant of the integrator is correlated with the switching frequency, thus the current-feedback signal is proportional to an output current of the power converter. A PWM circuit controls the pulse width of the switching signal in response to the outputs of a voltage-loop error amplifier and a current-loop error amplifier. The output voltage and the maximum output current of the power converter are therefore regulated.
摘要翻译：本发明公开了一种用于初级侧受控电力转换器的开关控制电路。电压波形检测器产生电压反馈信号和放电时间信号。电流波形检测器通过测量初级侧开关电流产生电流波形信号。积分器通过将电流波形信号与放电时间进行积分来产生电流反馈信号。积分器的时间常数与开关频率相关，因此电流反馈信号与功率转换器的输出电流成比例。 PWM电路响应于电压环路误差放大器和电流环路误差放大器的输出来控制开关信号的脉冲宽度。因此调节功率转换器的输出电压和最大输出电流。

26. 发明授权

US07965528B2 Method and apparatus for measuring the switching current of power converter operated at continuous current mode 有权
标题翻译：用于测量在连续电流模式下工作的功率转换器的开关电流的方法和装置
公开(公告)号：US07965528B2
公开(公告)日：2011-06-21
申请号：US12255089
申请日：2008-10-21
申请人： Ta-Yung Yang , Chuh-Ching Li , Sheng-Fu Hsu , Li Lin , Jung-Sheng Chen
发明人： Ta-Yung Yang , Chuh-Ching Li , Sheng-Fu Hsu , Li Lin , Jung-Sheng Chen
IPC分类号： H02M3/24 , H02M3/335 , H02M7/44
CPC分类号： H02M3/33507 , G01R19/0092 , G01R31/40
摘要： An apparatus for detecting a switching current of the power converter, wherein the apparatus includes a signal generation circuit, a sample-and-hold circuit, and a calculating circuit. The signal generation circuit generates a sample signal in accordance with the pulse width of a switching signal. The sample-and-hold circuit is coupled to receive the sample signal and switching current signal for generating a first current signal and a second current signal. The calculating circuit is coupled to receive the first current signal and the second current signal for generating output signals. The switching signal is used for switching the magnetic device of the power converter, and the switching current signal is correlated to the switching current of the power converter; the output signals are correlated to the value of the switching current of the power converter.
摘要翻译：一种用于检测功率转换器的开关电流的装置，其中所述装置包括信号产生电路，采样保持电路和计算电路。信号生成电路根据切换信号的脉冲宽度生成采样信号。采样和保持电路被耦合以接收采样信号和开关电流信号，用于产生第一电流信号和第二电流信号。计算电路被耦合以接收第一电流信号和第二电流信号以产生输出信号。开关信号用于切换功率转换器的磁性装置，开关电流信号与功率转换器的开关电流相关; 输出信号与功率转换器的开关电流的值相关。

27. 发明申请

US20080309380A1 METHOD AND APPARATUS FOR DETECTING SWITCHING CURRENT OF MAGNETIC DEVICE OPERATED IN CONTINUOUS CURRENT MODE 有权
标题翻译：用于检测在连续电流模式下操作的磁性装置的开关电流的方法和装置
公开(公告)号：US20080309380A1
公开(公告)日：2008-12-18
申请号：US11763138
申请日：2007-06-14
申请人： Ta-yung Yang , Chuh-Ching Li
发明人： Ta-yung Yang , Chuh-Ching Li
IPC分类号： H03K5/01
CPC分类号： H02M3/33507 , G01R19/0092 , H02M2001/0009
摘要： The present invention provides a method and apparatus for detecting a continuous current of a switching current. A current signal is produced in response to a switching current of the magnetic device. By sampling the waveform of the current signal in response to the enabling of a switching signal, a first current signal and a second current signal are generated. A continuous current signal is produced according to the first current signal and the second current signal. The continuous current signal is corrected to the continuous current of the switching current.
摘要翻译：本发明提供一种用于检测开关电流的连续电流的方法和装置。响应于磁性装置的开关电流产生电流信号。通过响应于使能切换信号对当前信号的波形进行采样，产生第一电流信号和第二电流信号。根据第一电流信号和第二电流信号产生连续电流信号。连续电流信号被校正为开关电流的连续电流。

28. 发明授权

US07405595B2 High-side transistor driver having positive feedback for improving speed and power saving 失效
标题翻译：具有正反馈的高端晶体管驱动器，用于提高速度和省电
公开(公告)号：US07405595B2
公开(公告)日：2008-07-29
申请号：US11281685
申请日：2005-11-16
申请人： Ta-yung Yang , Chuh-Ching Li , Yu-Min Chen
发明人： Ta-yung Yang , Chuh-Ching Li , Yu-Min Chen
IPC分类号： H03K19/094 , H03K19/0175
CPC分类号： H03K17/04123
摘要： A high-side transistor driver including a driver circuit for generating a driving signal to drive a high-side transistor is provided. A floating supply terminal provides a supply voltage to the driver circuit. A floating ground terminal is connected to a source of the high-side transistor. A bootstrap diode is coupled between the floating supply terminal and a voltage source. A capacitor is connected to the bootstrap diode and is coupled between the floating supply terminal and the floating ground terminal. A high-voltage transistor is used for switching off the driving signal and the high-side transistor in response to an input signal. A speed-up capacitor is coupled to the driver circuit for speeding up the driving signal. Furthermore, the positive feedback circuits in the driver circuit further accelerate the driving signal and save power for the driver circuit.
摘要翻译：提供了包括用于产生用于驱动高侧晶体管的驱动信号的驱动电路的高侧晶体管驱动器。浮动电源端子向驱动器电路提供电源电压。浮动接地端子连接到高侧晶体管的源极。自举二极管耦合在浮动电源端子和电压源之间。电容器连接到自举二极管并耦合在浮动电源端子和浮动接地端子之间。高压晶体管用于响应于输入信号来关断驱动信号和高侧晶体管。加速电容器耦合到驱动器电路以加速驱动信号。此外，驱动电路中的正反馈电路进一步加速驱动信号并节省驱动电路的功率。

29. 发明申请

US20080012547A1 DETECTION CIRCUIT FOR SENSING THE INPUT VOLTAGE OF TRANSFORMER 有权
标题翻译：用于感应变压器输入电压的检测电路
公开(公告)号：US20080012547A1
公开(公告)日：2008-01-17
申请号：US11456573
申请日：2006-07-11
申请人： Chuh-Ching Li , Ta-yung Yang
发明人： Chuh-Ching Li , Ta-yung Yang
IPC分类号： G01R31/02
CPC分类号： G01R15/183
摘要： A circuit for detecting an input voltage of a transformer is provided. The circuit includes a current source circuit coupled to a winding of a transformer. A current-to-voltage circuit is coupled to the current source circuit to generate a first voltage in response to a current outputted from the current source circuit. A sample-and-hold circuit generates an output voltage by sampling the first voltage. The transformer is coupled to the input voltage, and the output voltage is correlated to the input voltage of the transformer.
摘要翻译：提供了用于检测变压器的输入电压的电路。电路包括耦合到变压器绕组的电流源电路。电流 - 电压电路耦合到电流源电路以响应于从电流源电路输出的电流产生第一电压。采样保持电路通过对第一电压进行采样来产生输出电压。变压器耦合到输入电压，输出电压与变压器的输入电压相关。

30. 发明申请

US20070109020A1 High-side transistor driver having positive feedback for improving speed and power saving 失效
标题翻译：具有正反馈的高端晶体管驱动器，用于提高速度和省电
公开(公告)号：US20070109020A1
公开(公告)日：2007-05-17
申请号：US11281685
申请日：2005-11-16
申请人： Ta-yung Yang , Chuh-Ching Li , Yu-Min Chen
发明人： Ta-yung Yang , Chuh-Ching Li , Yu-Min Chen
IPC分类号： H03K19/094
CPC分类号： H03K17/04123
摘要： A high-side transistor driver including a driver circuit for generating a driving signal to drive a high-side transistor is provided. A floating supply terminal provides a supply voltage to the driver circuit. A floating ground terminal is connected to a source of the high-side transistor. A bootstrap diode is coupled between the floating supply terminal and a voltage source. A capacitor is connected to the bootstrap diode and is coupled between the floating supply terminal and the floating ground terminal. A high-voltage transistor is used for switching off the driving signal and the high-side transistor in response to an input signal. A speed-up capacitor is coupled to the driver circuit for speeding up the driving signal. Furthermore, the positive feedback circuits in the driver circuit further accelerate the driving signal and save power for the driver circuit.
摘要翻译：提供了包括用于产生用于驱动高侧晶体管的驱动信号的驱动电路的高侧晶体管驱动器。浮动电源端子向驱动器电路提供电源电压。浮动接地端子连接到高侧晶体管的源极。自举二极管耦合在浮动电源端子和电压源之间。电容器连接到自举二极管并耦合在浮动电源端子和浮动接地端子之间。高压晶体管用于响应于输入信号来关断驱动信号和高侧晶体管。加速电容器耦合到驱动器电路以加速驱动信号。此外，驱动电路中的正反馈电路进一步加速驱动信号并节省驱动电路的功率。

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