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91. 发明授权

US08767419B2 Feedback circuit with feedback impedance modulation for improving power saving 有权
标题翻译：具有反馈阻抗调制的反馈电路，提高节电效果
公开(公告)号：US08767419B2
公开(公告)日：2014-07-01
申请号：US12728608
申请日：2010-03-22
申请人： Wei-Hsuan Huang
发明人： Wei-Hsuan Huang
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M2001/0032 , Y02B70/16
摘要： A feedback circuit with feedback impedance modulation according to the present invention comprises a compare circuit, a counter and a switching resistor circuit. The compare circuit receives a feedback signal of a power converter to compare the feedback signal with a threshold signal for generating a control signal. The feedback signal is correlated to a load condition of the power converter. The counter is coupled to the compare circuit and generates a modulation signal in response to the control signal. The switching resistor circuit is coupled to the counter and a feedback loop of the power converter for modulating a feedback impedance of the power converter in response to the modulation signal. The feedback impedance is directly modulated from a lower resistance to a higher resistance when the load condition is reduced from a half/full-load to a no/light-load. The feedback impedance is gradually modulated from a higher resistance to a lower resistance when the load condition is increased from the no/light-load to the half/full-load.
摘要翻译：根据本发明的具有反馈阻抗调制的反馈电路包括比较电路，计数器和开关电阻电路。比较电路接收功率转换器的反馈信号，以将反馈信号与用于产生控制信号的阈值信号进行比较。反馈信号与功率转换器的负载状态相关。计数器耦合到比较电路，并响应于控制信号产生调制信号。开关电阻电路耦合到计数器和功率转换器的反馈回路，用于响应于调制信号调制功率转换器的反馈阻抗。当负载条件从一半/满负载降低到无负载时，反馈阻抗从较低的电阻直接调制到较高的电阻。当负载条件从no / light-load增加到half / full-load时，反馈阻抗从较高的电阻逐渐调制到较低的电阻。

92. 发明授权

US08767417B2 Dual switches flyback power converter with wide input voltage range 有权
标题翻译：双开关反激式电源转换器，输入电压范围宽
公开(公告)号：US08767417B2
公开(公告)日：2014-07-01
申请号：US13099595
申请日：2011-05-03
申请人： Chao-Chih Lin , Ta-Yung Yang , Ying-Chieh Su
发明人： Chao-Chih Lin , Ta-Yung Yang , Ying-Chieh Su
IPC分类号： H02M3/335
CPC分类号： H02M3/3353
摘要： A dual switches Flyback power converter with a wide input voltage range according to the present invention comprises an input diode and an energy-storage capacitor. The input diode can prevent the reflected voltage from the power transformer of the power converter to charge the electrolytic capacitor of the power converter. The energy-storage capacitor will store the reflected voltage and the energy of the leakage inductor of the power transformer. The energy stored in the energy-storage capacitor will be recycled to the output voltage of the power converter. Further, the input diode can be replaced by an input transistor to prevent the reflected voltage from the power transformer to charge the electrolytic capacitor.
摘要翻译：根据本发明的具有宽输入电压范围的双重开关反激式功率转换器包括输入二极管和储能电容器。输入二极管可以防止功率转换器的电源变压器的反射电压对功率转换器的电解电容器充电。储能电容器将存储电力变压器的反射电压和漏电感器的能量。存储在储能电容器中的能量将被再循环到功率转换器的输出电压。此外，输入二极管可以由输入晶体管代替，以防止来自电力变压器的反射电压对电解电容器充电。

93. 发明申请

US20140126250A1 CONTROL CIRCUIT OF POWER CONVERTER WITH TEMPERATURE CONTROL AND METHOD FOR CONTROLLING POWER CONVERTER 有权
标题翻译：具有温度控制功率转换器的控制电路和控制功率转换器的方法
公开(公告)号：US20140126250A1
公开(公告)日：2014-05-08
申请号：US14069380
申请日：2013-11-01
申请人： Chien-Tung Lan , Ta-Yung Yang
发明人： Chien-Tung Lan , Ta-Yung Yang
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M2001/327
摘要： A control circuit of a power converter and a method for controlling the power converter are provided. The control circuit of the power converter comprises a switching circuit and a temperature-sensing device. The switching circuit generates a switching signal in response to a feedback signal, and the switching circuit generates a current-sensing signal for regulating an output of the power converter. The temperature-sensing device generates a temperature signal in response to temperature of the temperature-sensing device.
摘要翻译：提供了功率转换器的控制电路和用于控制功率转换器的方法。功率转换器的控制电路包括开关电路和温度感测装置。开关电路响应于反馈信号产生开关信号，并且开关电路产生用于调节功率转换器的输出的电流感测信号。温度感测装置响应于温度感测装置的温度产生温度信号。

94. 发明申请

US20130279206A1 CONTROL CIRCUIT FOR AN INVERTER WITH SMALL INPUT CAPACITOR 有权
标题翻译：具有小型输入电容器的逆变器的控制电路
公开(公告)号：US20130279206A1
公开(公告)日：2013-10-24
申请号：US13865377
申请日：2013-04-18
申请人： SYSTEM GENERAL CORP.
发明人： TA-YUNG YANG
IPC分类号： H02M3/335
CPC分类号： H02M3/33515 , H02M3/33507 , H02M3/3376
摘要： A control circuit for an inverter according to the present invention comprises a PWM circuit and a controller. The PWM circuit generates switching signals in accordance with a PWM control signal. The switching signals are coupled to switch a transformer through transistors for generating an output of the inverter. The controller is coupled to receive a command signal and an input signal for generating the PWM control signal. The input signal is correlated to an input voltage waveform of the inverter. The command signal is utilized to determine a power level of the output of the inverter. The advantages of the control circuit are lower cost, small size, good power factor and higher reliability.
摘要翻译：根据本发明的用于逆变器的控制电路包括PWM电路和控制器。 PWM电路根据PWM控制信号产生开关信号。开关信号被耦合以通过用于产生逆变器的输出的晶体管来切换变压器。控制器被耦合以接收命令信号和用于产生PWM控制信号的输入信号。输入信号与变频器的输入电压波形相关。命令信号用于确定逆变器输出的功率电平。控制电路的优点是成本较低，体积小，功率因数好，可靠性更高。

95. 发明申请

US20130235627A1 START-UP CIRCUIT TO DISCHARGE EMI FILTER FOR POWER SAVING OF POWER SUPPLIES 审中-公开
标题翻译：启动电路放电电源滤波器用于节电
公开(公告)号：US20130235627A1
公开(公告)日：2013-09-12
申请号：US13870177
申请日：2013-04-25
申请人： SYSTEM GENERAL CORP.
发明人： WEI-HSUAN HUANG , MENG-JEN TSAI , CHIEN-YUAN LIN , MING-CHANG TSOU , CHUAN-CHANG LI , GWO-HWA WANG
IPC分类号： H02M1/14
CPC分类号： H02M1/14 , H02M1/126 , H02M1/36 , H02M2001/322
摘要： A start-up circuit to discharge EMI filter is developed for power saving. It includes a detection circuit detecting a power source for generating a sample signal. A sample circuit is coupled to the detection circuit for generating a reset signal in response to the sample signal. The reset signal is utilized for discharging a stored voltage of the EMI filter.
摘要翻译：开发了用于放电EMI滤波器的启动电路，用于省电。它包括检测电路以检测用于产生采样信号的电源。采样电路耦合到检测电路，用于响应于采样信号产生复位信号。复位信号用于放电EMI滤波器的存储电压。

96. 发明申请

US20130235623A1 TWO-SWITCH FLYBACK POWER CONVERTERS 审中-公开
标题翻译：双开关电源转换器
公开(公告)号：US20130235623A1
公开(公告)日：2013-09-12
申请号：US13790168
申请日：2013-03-08
申请人： SYSTEM GENERAL CORP.
发明人： WEI-HSUAN HUANG
IPC分类号： H02M3/156
CPC分类号： H02M3/156 , H02M1/14 , H02M3/33569 , H02M7/217 , H02M2001/0022
摘要： A two-switch Flyback power converter is disclosed. The two-switch Flyback power converter comprises a transformer, a first switch, a second switch, and a control circuit. The transformer includes a primary-winding and a secondary-winding. The primary-winding has a first winding and a second winding. The first switch is coupled to switch the first winding. The second switch is coupled to switch the first winding and the second winding. The control circuit generates a first-drive signal and a second-drive signal to control the first switch and the second switch for switching the transformer and regulating an output of the two-switch Flyback power converter. The two-switch Flyback power converter with less capacitance of the bulk capacitor or bulk capacitor-less can reduce the voltage ripples at the output voltage for cost saving.
摘要翻译：公开了一种双开关反激式功率转换器。双开关反激式功率转换器包括变压器，第一开关，第二开关和控制电路。变压器包括初级绕组和次级绕组。初级绕组具有第一绕组和第二绕组。第一开关被耦合以切换第一绕组。第二开关被耦合以切换第一绕组和第二绕组。控制电路产生第一驱动信号和第二驱动信号以控制第一开关和第二开关，用于切换变压器并调节双开关反激式功率转换器的输出。具有较小电容大容量电容器或大容量电容器的双开关反激式功率转换器可以降低输出电压下的电压波动，从而节约成本。

97. 发明授权

US08503144B2 Control circuit with protection circuit for power supply 有权
标题翻译：具有电源保护电路的控制电路
公开(公告)号：US08503144B2
公开(公告)日：2013-08-06
申请号：US12338112
申请日：2008-12-18
申请人： Meng-Jen Tsai , Chao-Chih Lin , Rui-Hong Lu , Chiu-Chih Chiang
发明人： Meng-Jen Tsai , Chao-Chih Lin , Rui-Hong Lu , Chiu-Chih Chiang
IPC分类号： H02H3/20
CPC分类号： H02H7/1213 , H02M1/32 , H02M3/33507
摘要： A control circuit with protection circuit for power supply according to the present invention comprises a peak-detection circuit and a protection circuit. The peak-detection circuit detects an AC input voltage and generates a peak-detection signal. The protection circuit generates a reset signal to reduce the output of the power supply in response to the peak-detection signal. The present invention can protect the power supply in response to the AC input voltage effectively through the peak-detection circuit.
摘要翻译：根据本发明的具有电源保护电路的控制电路包括峰值检测电路和保护电路。峰值检测电路检测交流输入电压并产生峰值检测信号。保护电路产生复位信号，以响应峰值检测信号减小电源的输出。本发明可以通过峰值检测电路有效地响应于AC输入电压来保护电源。

98. 发明授权

US08471626B2 Start-up circuit to discharge EMI filter of power supplies 有权
标题翻译：启动电路放电电源EMI滤波器
公开(公告)号：US08471626B2
公开(公告)日：2013-06-25
申请号：US13017203
申请日：2011-01-31
申请人： Wei-Hsuan Huang
发明人： Wei-Hsuan Huang
IPC分类号： G05F1/10 , G05F3/02
CPC分类号： H02M1/126 , H02M1/36 , H02M2001/322
摘要： A start-up circuit to discharge EMI filter is developed for power saving. It includes a detection circuit detecting a power source for generating a sample signal. A sample circuit is coupled to the detection circuit for generating a reset signal in response to the sample signal. The reset signal is utilized for discharging a stored voltage of the EMI filter.
摘要翻译：开发了用于放电EMI滤波器的启动电路，用于省电。它包括检测电路以检测用于产生采样信号的电源。采样电路耦合到检测电路，用于响应于采样信号产生复位信号。复位信号用于放电EMI滤波器的存储电压。

99. 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。

100. 发明申请

US20130051098A1 ADAPTIVE SLOPE COMPENSATION PROGRAMMABLE BY INPUT VOLTAGE OF POWER CONVERTER 有权
标题翻译：通过输入电压转换器可编程的自适应斜率补偿
公开(公告)号：US20130051098A1
公开(公告)日：2013-02-28
申请号：US13591207
申请日：2012-08-21
申请人： Ta-Yung Yang , Li Lin , Yue-Hong Tang
发明人： Ta-Yung Yang , Li Lin , Yue-Hong Tang
IPC分类号： H02M7/44
CPC分类号： H02M3/335 , H02M2001/0022 , H02M2001/0025
摘要： A method for controlling a power converter is provided. The method includes the following steps. A switching signal coupled to switch a transformer for regulating the output of the power converter is generated in accordance with a feedback signal and a ramp signal. The ramp signal is generated in accordance with a switching current signal and a slope compensation signal. The slope compensation signal is generated in response to an input voltage signal. The input voltage signal is generated in response to the level of the input voltage of the power converter. The feedback signal is generated in accordance with the output of the power converter, and the switching current signal is correlated with a switching current of the transformer.
摘要翻译：提供一种用于控制功率转换器的方法。该方法包括以下步骤。根据反馈信号和斜坡信号产生耦合以切换用于调节功率转换器的输出的变压器的开关信号。斜坡信号根据开关电流信号和斜率补偿信号产生。斜坡补偿信号是根据输入电压信号产生的。响应于功率转换器的输入电压的电平而产生输入电压信号。反馈信号根据功率转换器的输出产生，开关电流信号与变压器的开关电流相关。

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