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31. 发明申请

US20090219003A1 OFFLINE SYNCHRONOUS SWITCHING REGULATOR 有权
标题翻译：离线同步切换调节器
公开(公告)号：US20090219003A1
公开(公告)日：2009-09-03
申请号：US12039754
申请日：2008-02-29
申请人： Ta-yung Yang
发明人： Ta-yung Yang
IPC分类号： G05F1/56 , H02M3/335
CPC分类号： H02M3/33592 , Y02B70/1475
摘要： An offline synchronous switching regulator is proposed for improving the efficiency thereof. Switches are coupled to switch a transformer and generate a switching signal at a secondary side of the transformer. A switching circuit is coupled to an output of the regulator to generate pulse signals in response to the switching signal and a feedback signal. Pulse signals are utilized to control a synchronous switch for rectifying and regulating the regulator. The synchronous switch includes a power-switch set and a control circuit. The control circuit receives pulse signals for turning on/off the power-switch set. The power-switch set is connected in between the transformer and the output of the regulator. A flyback switch freewheels an inductor current and can be turned on in response to the off state of the power-switch set whose on-time is correlated to the on-time of the power-switch set.
摘要翻译：提出了一种离线同步开关调节器来提高其效率。开关被耦合以切换变压器并在变压器的次级侧产生开关信号。开关电路耦合到调节器的输出端，以响应于开关信号和反馈信号产生脉冲信号。脉冲信号用于控制用于整流和调节调节器的同步开关。同步开关包括电源开关组和控制电路。控制电路接收用于打开/关闭电源开关组的脉冲信号。电源开关组连接在变压器和稳压器的输出端之间。回扫开关使电感电流回转，并且可以响应于接通时间与功率开关组导通时间相关的功率开关组的关闭状态而导通。

32. 发明授权

US07577002B2 Frequency hopping control circuit for reducing EMI of power supplies 有权
标题翻译：用于降低电源EMI的跳频控制电路
公开(公告)号：US07577002B2
公开(公告)日：2009-08-18
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： H02M5/27
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。

33. 发明授权

US07492613B2 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：US07492613B2
公开(公告)日：2009-02-17
申请号：US11288726
申请日：2005-11-28
申请人： Ta-yung Yang , Chuh-Ching Li , Feng Cheng Tsao
发明人： Ta-yung Yang , Chuh-Ching Li , Feng Cheng Tsao
IPC分类号： H02M3/335
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。

34. 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。

35. 发明授权

US07460380B2 Highly efficient switching power converter using a charge pump to power the drive circuit 有权
标题翻译：高效的开关电源转换器采用电荷泵为驱动电路供电
公开(公告)号：US07460380B2
公开(公告)日：2008-12-02
申请号：US11426318
申请日：2006-06-26
申请人： Ta-yung Yang
发明人： Ta-yung Yang
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M3/337
摘要： A switching power converter having a first and a second transistor are connected in series with the transformer to provide higher switching efficiency. A charge pump circuit is coupled to a drive circuit to provide a power source for driving the first transistor. A third transistor is connected between the transformer and the ground to help the switching of the transformer and the charge of the charge pump circuit. A switching control circuit is coupled to the output of the switching power converter to generate a first switching signal and a second switching signal for regulating the switching power converter. The first switching signal is coupled to drive the first transistor and the second transistor. The second switching signal is coupled to drive the third transistor.
摘要翻译：具有第一和第二晶体管的开关功率转换器与变压器串联连接以提供更高的开关效率。电荷泵电路耦合到驱动电路以提供用于驱动第一晶体管的电源。变压器和地之间连接第三个晶体管，以帮助变压器的开关和电荷泵电路的充电。开关控制电路耦合到开关功率转换器的输出端以产生第一开关信号和用于调节开关功率转换器的第二开关信号。第一开关信号被耦合以驱动第一晶体管和第二晶体管。第二开关信号被耦合以驱动第三晶体管。

36. 发明申请

US20080232147A1 RESONANT INVERTER 有权
标题翻译：共振逆变器
公开(公告)号：US20080232147A1
公开(公告)日：2008-09-25
申请号：US11688237
申请日：2007-03-19
申请人： Ta-yung Yang , Jea-Sen Lin
发明人： Ta-yung Yang , Jea-Sen Lin
IPC分类号： H02M7/537
CPC分类号： H05B41/2828
摘要： The present invention provides a low-cost resonant inverter circuit for ballast. The resonant circuit includes a transformer connected in series with a lamp to operate the lamp. A first transistor and a second transistor are coupled to switch the resonant inverter 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 inverter circuit. The transistor is turned on once the control signal is higher than a high-threshold. Next, the transistor is turned off once the control signal is lower than a low-threshold. Therefore, soft switching operation for the first transistor and the second transistor is achieved.
摘要翻译：本发明提供一种用于镇流器的低成本谐振逆变电路。谐振电路包括与灯串联连接的变压器来操作灯。耦合第一晶体管和第二晶体管以切换谐振逆变器电路。变压器的第二绕组和第三绕组用于响应谐振逆变器电路的开关电流产生控制信号。一旦控制信号高于高阈值，晶体管就会导通。接下来，一旦控制信号低于低阈值，晶体管被截止。因此，实现了第一晶体管和第二晶体管的软开关操作。

37. 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。

38. 发明申请

US20080174293A1 Controller With Loop Impedance Modulation For Power Converter 有权
标题翻译：用于电源转换器的环路阻抗调制控制器
公开(公告)号：US20080174293A1
公开(公告)日：2008-07-24
申请号：US11626026
申请日：2007-01-23
申请人： Ta-yung Yang
发明人： Ta-yung Yang
IPC分类号： G05F1/656
CPC分类号： H02M3/33507 , H02M2001/0032 , Y02B70/16
摘要： A control circuit is provided to generate a mode signal at light load of the power converter. The mode signal is coupled to disable the switching signal for saving power. The impedance of an input circuit is increased in response to the mode signal. Furthermore, a soft start circuit is initiated by the mode signal when switching signal is enabled. An external capacitor associates with the impedance of the input circuit determine the off period of the switching signal.
摘要翻译：提供控制电路以在功率转换器的轻负载下产生模式信号。模式信号被耦合以禁用开关信号以节省功率。响应于模式信号，输入电路的阻抗增加。此外，当启用开关信号时，通过模式信号启动软启动电路。与输入电路的阻抗相关联的外部电容器确定开关信号的截止周期。

39. 发明申请

US20080116862A1 Low dropout regulator with wide input voltage range 有权
标题翻译：低压差稳压器，输入电压范围宽
公开(公告)号：US20080116862A1
公开(公告)日：2008-05-22
申请号：US11602357
申请日：2006-11-21
申请人： Ta-Yung Yang , Chih-Ho Lin
发明人： Ta-Yung Yang , Chih-Ho Lin
IPC分类号： G05F1/00
CPC分类号： G05F1/575
摘要： A low dropout (LDO) regulator operates in wide input range. The LDO includes an N-type pass transistor and a P-type pass transistor for supplying power to the output terminal. The P-type pass transistor is connected with N-type pass transistor in parallel. Two error amplifiers control the gate terminals of the N-type pass transistor and P-type pass transistor to generate a first output voltage and a second output voltage. Thus, the first output voltage is generated when the input voltage is higher than a threshold voltage, and the second output voltage is generated when the input voltage is lower than the threshold voltage.
摘要翻译：低压差（LDO）稳压器在宽输入范围内工作。 LDO包括用于向输出端子供电的N型通过晶体管和P型通过晶体管。 P型传输晶体管与N型传输晶体管并联连接。两个误差放大器控制N型通过晶体管和P型通过晶体管的栅极端子以产生第一输出电压和第二输出电压。因此，当输入电压高于阈值电压时产生第一输出电压，并且当输入电压低于阈值电压时产生第二输出电压。

40. 发明授权

US07362593B2 Switching control circuit having off-time modulation to improve efficiency of primary-side controlled power supply 有权
标题翻译：具有关断时间调制的开关控制电路，以提高初级侧受控电源的效率
公开(公告)号：US07362593B2
公开(公告)日：2008-04-22
申请号：US10943668
申请日：2004-09-16
申请人： Ta-yung Yang , Guo-Kiang Hung , Jenn-yu G. Lin , Chuh-Ching Li , Feng Cheng Tsao
发明人： Ta-yung Yang , Guo-Kiang Hung , Jenn-yu G. Lin , Chuh-Ching Li , Feng Cheng Tsao
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M2001/0032 , Y02B70/16
摘要： A voltage-waveform detector produces a voltage-feedback signal and a discharge-time signal by multi-sampling a voltage signal of a transformer. The discharge-time signal represents a discharge time of a secondary-side switching current. A voltage-loop error amplifier amplifies the voltage-feedback signal and generates a control signal. An off-time modulator correspondingly generates a discharge-current signal and a standby signal in response to the control signal and an under-voltage signal. The under-voltage signal indicates a low supply voltage of the controller. An oscillator produces a pulse signal in response to the discharge-current signal. The pulse signal determines the off-time of the switching signal. A PWM circuit generates the switching signal in response to the pulse signal and the standby signal. The standby signal further controls the off-time of the switching signal and maintains a minimum switching frequency. The switching signal is used for regulating the output of the power supply.
摘要翻译：电压波形检测器通过对变压器的电压信号进行多次采样来产生电压反馈信号和放电时间信号。放电时间信号表示次级侧开关电流的放电时间。电压环路误差放大器放大电压反馈信号并产生控制信号。关断时间调制器相应地根据控制信号和欠压信号产生放电电流信号和待机信号。欠压信号表示控制器的低电源电压。振荡器响应于放电电流信号产生脉冲信号。脉冲信号确定开关信号的关断时间。 PWM电路响应于脉冲信号和待机信号产生开关信号。待机信号进一步控制开关信号的关断时间并保持最小开关频率。开关信号用于调节电源的输出。

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