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1. 发明申请

US20090316451A1 APPARATUS PROVIDING PROTECTION FOR POWER CONVERTER 有权
标题翻译：提供电源转换器的设备保护
公开(公告)号：US20090316451A1
公开(公告)日：2009-12-24
申请号：US12550397
申请日：2009-08-30
申请人： Ta-Yung Yang , Chien-Yuan Lin , Tso-Min Chen
发明人： Ta-Yung Yang , Chien-Yuan Lin , Tso-Min Chen
IPC分类号： H02H7/10 , H02M1/00
CPC分类号： H02M1/32 , H02M3/33507
摘要： A switching circuit for a power converter includes an oscillation circuit, a first circuit, and a first comparator. The oscillation circuit generates a switching signal for regulating an output of the power converter. The first circuit generates a threshold signal. The first comparator is coupled to receive a signal representative of a current through a power switch. Besides, the first comparator generates a control signal in response to the signal and the threshold signal. A frequency of the switching signal is increased in response to the enabling of the control signal.
摘要翻译：用于功率转换器的开关电路包括振荡电路，第一电路和第一比较器。振荡电路产生用于调节功率转换器的输出的开关信号。第一电路产生阈值信号。第一比较器被耦合以接收表示通过电源开关的电流的信号。此外，第一比较器响应于信号和阈值信号产生控制信号。响应于控制信号的使能，开关信号的频率增加。

2. 发明授权

US07602160B2 Method and apparatus providing protection for power converter 有权
标题翻译：为功率转换器提供保护的方法和装置
公开(公告)号：US07602160B2
公开(公告)日：2009-10-13
申请号：US11461405
申请日：2006-07-31
申请人： Ta-yung Yang , Chien-Yuan Lin , Tso-Min Chen
发明人： Ta-yung Yang , Chien-Yuan Lin , Tso-Min Chen
IPC分类号： G05F1/40
CPC分类号： H02M1/32 , H02M3/33507
摘要： The invention presents a surge output protection for a control circuit of power converter. It comprises an input circuit for generating a threshold signal. A first comparator is coupled to receive a signal representative the current through a power switch. The first comparator further generates a control signal in response to the signal and the threshold signal. A timer circuit is utilized to generate a time-out signal in response to the control signal. The time-out signal is coupled to turn off the power switch.
摘要翻译：本发明为功率转换器的控制电路提供浪涌输出保护。它包括用于产生阈值信号的输入电路。第一比较器被耦合以接收代表通过电源开关的电流的信号。第一比较器还响应于信号和阈值信号产生控制信号。使用定时器电路来响应于控制信号产生超时信号。超时信号被耦合以关闭电源开关。

3. 发明授权

US07847533B2 Apparatus providing protection for power converter 有权
标题翻译：提供功率转换器保护的装置
公开(公告)号：US07847533B2
公开(公告)日：2010-12-07
申请号：US12550397
申请日：2009-08-30
申请人： Ta-Yung Yang , Chien-Yuan Lin , Tso-Min Chen
发明人： Ta-Yung Yang , Chien-Yuan Lin , Tso-Min Chen
IPC分类号： G05F1/40
CPC分类号： H02M1/32 , H02M3/33507
摘要： A switching circuit for a power converter includes an oscillation circuit, a first circuit, and a first comparator. The oscillation circuit generates a switching signal for regulating an output of the power converter. The first circuit generates a threshold signal. The first comparator is coupled to receive a signal representative of a current through a power switch. Besides, the first comparator generates a control signal in response to the signal and the threshold signal. A frequency of the switching signal is increased in response to the enabling of the control signal.
摘要翻译：用于功率转换器的开关电路包括振荡电路，第一电路和第一比较器。振荡电路产生用于调节功率转换器的输出的开关信号。第一电路产生阈值信号。第一比较器被耦合以接收表示通过电源开关的电流的信号。此外，第一比较器响应于信号和阈值信号产生控制信号。响应于控制信号的使能，开关信号的频率增加。

4. 发明申请

US20080025054A1 METHOD AND APPARATUS PROVIDING PROTECTION FOR POWER CONVERTER 有权
标题翻译：提供功率转换器的方法和装置保护
公开(公告)号：US20080025054A1
公开(公告)日：2008-01-31
申请号：US11461405
申请日：2006-07-31
申请人： Ta-yung Yang , Chien-Yuan Lin , Tso-Min Chen
发明人： Ta-yung Yang , Chien-Yuan Lin , Tso-Min Chen
IPC分类号： H02H7/122
CPC分类号： H02M1/32 , H02M3/33507
摘要： The invention presents a surge output protection for a control circuit of power converter. It comprises an input circuit for generating a threshold signal. A first comparator is coupled to receive a signal representative the current through a power switch. The first comparator further generates a control signal in response to the signal and the threshold signal. A timer circuit is utilized to generate a time-out signal in response to the control signal. The time-out signal is coupled to turn off the power switch.
摘要翻译：本发明为功率转换器的控制电路提供浪涌输出保护。它包括用于产生阈值信号的输入电路。第一比较器被耦合以接收代表通过电源开关的电流的信号。第一比较器还响应于信号和阈值信号产生控制信号。使用定时器电路来响应于控制信号产生超时信号。超时信号被耦合以关闭电源开关。

5. 发明申请

US20110062877A1 OFFLINE LED LIGHTING CIRCUIT WITH DIMMING CONTROL 有权
标题翻译：离线LED照明电路，带调光控制
公开(公告)号：US20110062877A1
公开(公告)日：2011-03-17
申请号：US12769728
申请日：2010-04-29
申请人： Ta-Yung Yang , Chien-Yuan Lin , Chien-Tung Lan
发明人： Ta-Yung Yang , Chien-Yuan Lin , Chien-Tung Lan
IPC分类号： H05B37/02
CPC分类号： H05B33/0845
摘要： An offline LED lighting circuit comprises a controller and a dimming circuit. The controller generates a switching signal to switch a transformer for generating an output voltage and an output current at an output terminal of the offline LED lighting circuit to drive LEDs. The dimming circuit is coupled to the controller to modulate the switching signal in response to a dimming signal. A first reference voltage and a second reference voltage of the controller are generated in response to the dimming signal. The switching signal is modulated by the first reference voltage and the second reference voltage. The controller regulates the output voltage at a first output level and a second output level in response to both the first reference voltage and the second reference voltage. The second output level is lower than the first output level.
摘要翻译：离线LED照明电路包括控制器和调光电路。控制器产生切换信号以切换变压器，以在离线LED照明电路的输出端产生输出电压和输出电流，以驱动LED。调光电路耦合到控制器以响应于调光信号来调制开关信号。响应于调光信号产生控制器的第一参考电压和第二参考电压。开关信号由第一参考电压和第二参考电压调制。控制器响应于第一参考电压和第二参考电压来调节处于第一输出电平的输出电压和第二输出电平。第二个输出电平低于第一个输出电平。

6. 发明授权

US08134302B2 Offline LED driving circuits 有权
标题翻译：离线LED驱动电路
公开(公告)号：US08134302B2
公开(公告)日：2012-03-13
申请号：US12758129
申请日：2010-04-12
申请人： Ta-Yung Yang , Chien-Yuan Lin , Chien-Tung Lan
发明人： Ta-Yung Yang , Chien-Yuan Lin , Chien-Tung Lan
IPC分类号： H05B37/02 , H05B39/00
CPC分类号： H05B33/0851
摘要： An offline LED driving circuit includes a controller, a shunt regulator, an opto-coupler, and a dimming circuit. The controller generates a switching signal to switch a transformer for providing an output voltage and an output current. The shunt regulator is coupled to an output terminal of the LED driving circuit for providing a feedback signal to the controller via the opto-coupler. The dimming circuit coupled to the shunt regulator modulates the feedback signal at a first feedback level and a second feedback level in response to a dimming signal. The output voltage is respectively regulated at a first output level and a second output level in response to the first feedback level and the second feedback level of the feedback signal. The duty cycle of the switching signal will be varied in a soft-start manner when the feedback signal changes from the second feedback level to the first feedback level.
摘要翻译：离线LED驱动电路包括控制器，并联调节器，光耦合器和调光电路。控制器产生切换信号以切换变压器以提供输出电压和输出电流。分流调节器耦合到LED驱动电路的输出端，用于经由光耦合器向控制器提供反馈信号。耦合到分流调节器的调光电路响应于调光信号在第一反馈电平和第二反馈电平处调制反馈信号。响应于反馈信号的第一反馈电平和第二反馈电平，输出电压分别被调节在第一输出电平和第二输出电平。当反馈信号从第二反馈电平变为第一反馈电平时，切换信号的占空比将以软启动方式变化。

7. 发明申请

US20110062876A1 OFFLINE LED DRIVING CIRCUITS 有权
标题翻译：离线LED驱动电路
公开(公告)号：US20110062876A1
公开(公告)日：2011-03-17
申请号：US12758129
申请日：2010-04-12
申请人： Ta-Yung Yang , Chien-Yuan Lin , Chien-Tung Lan
发明人： Ta-Yung Yang , Chien-Yuan Lin , Chien-Tung Lan
IPC分类号： H05B37/02
CPC分类号： H05B33/0851
摘要： An offline LED driving circuit includes a controller, a shunt regulator, an opto-coupler, and a dimming circuit. The controller generates a switching signal to switch a transformer for providing an output voltage and an output current. The shunt regulator is coupled to an output terminal of the LED driving circuit for providing a feedback signal to the controller via the opto-coupler. The dimming circuit coupled to the shunt regulator modulates the feedback signal at a first feedback level and a second feedback level in response to a dimming signal. The output voltage is respectively regulated at a first output level and a second output level in response to the first feedback level and the second feedback level of the feedback signal. The duty cycle of the switching signal will be varied in a soft-start manner when the feedback signal changes from the second feedback level to the first feedback level.
摘要翻译：离线LED驱动电路包括控制器，并联调节器，光耦合器和调光电路。控制器产生切换信号以切换变压器以提供输出电压和输出电流。分流调节器耦合到LED驱动电路的输出端，用于经由光耦合器向控制器提供反馈信号。耦合到分流调节器的调光电路响应于调光信号在第一反馈电平和第二反馈电平处调制反馈信号。响应于反馈信号的第一反馈电平和第二反馈电平，输出电压分别被调节在第一输出电平和第二输出电平。当反馈信号从第二反馈电平变为第一反馈电平时，切换信号的占空比将以软启动方式变化。

8. 发明授权

US07313004B1 Switching controller for resonant power converter 有权
标题翻译：谐振功率转换器的开关控制器
公开(公告)号：US07313004B1
公开(公告)日：2007-12-25
申请号：US11614971
申请日：2006-12-21
申请人： Ta-Yung Yang , Chien-Yuan Lin , Kuang-Chih Shih , Wei-Ting Wang
发明人： Ta-Yung Yang , Chien-Yuan Lin , Kuang-Chih Shih , Wei-Ting Wang
IPC分类号： H02M3/335
CPC分类号： H02M3/3376 , H02M3/33523 , Y02B70/1433
摘要： An integrated control circuit for a resonant power converter includes a minimum-frequency programming circuit connected a first resistor to program a minimum switching frequency of the power converter. A feedback circuit is coupled to a feedback terminal to receive a feedback signal for generating an adjustment signal. A maximum-frequency programming circuit connects a second resistor to determine a maximum switching frequency in response to the adjustment signal. An oscillator is coupled to the minimum-frequency programming circuit and the maximum-frequency programming circuit to generate an oscillation signal for determining the switching frequency of the power converter. A feed-forward circuit is connected to a feed-forward terminal to receive a feed-forward signal represents the input voltage of the power converter. The switching frequency is increased in response to decrease of the feedback signal, and the switching frequency is increased in response to the increase of the feed-forward signal.
摘要翻译：用于谐振功率转换器的集成控制电路包括连接有第一电阻器以编程功率转换器的最小开关频率的最小频率编程电路。反馈电路耦合到反馈端以接收用于产生调整信号的反馈信号。最大频率编程电路连接第二电阻器以响应于调整信号确定最大开关频率。振荡器耦合到最小频率编程电路和最大频率编程电路，以产生用于确定功率转换器的开关频率的振荡信号。前馈电路连接到前馈端子以接收代表功率转换器的输入电压的前馈信号。响应于反馈信号的减小，开关频率增加，并且开关频率响应于前馈信号的增加而增加。

9. 发明授权

US07656685B2 Control method and circuit with indirect input voltage detection by switching current slope detection 有权
标题翻译：通过开关电流斜率检测进行间接输入电压检测的控制方法和电路
公开(公告)号：US07656685B2
公开(公告)日：2010-02-02
申请号：US11652571
申请日：2007-01-12
申请人： Ta-Yung Yang , Chien-Yuan Lin
发明人： Ta-Yung Yang , Chien-Yuan Lin
IPC分类号： H02M3/335
CPC分类号： G01R19/0084 , G01R15/144
摘要： The present invention provides a method and circuit for detecting an input voltage of a power converter. It includes a current sense circuit for generating a current signal in response to a switching current of an inductive device. A detection circuit is coupled to sense the current signal for generating a slope signal in response to a slope of the current signal. A signal generation circuit is further developed to generate an input-voltage signal in accordance with the slope signal. The level of the input-voltage signal is corrected to the input voltage of the power converter.
摘要翻译：本发明提供一种用于检测功率转换器的输入电压的方法和电路。它包括用于响应于感应装置的开关电流产生电流信号的电流感测电路。耦合检测电路以感测电流信号，以响应于当前信号的斜率产生斜率信号。进一步开发信号发生电路以根据斜率信号产生输入电压信号。输入电压信号的电平被校正为功率转换器的输入电压。

10. 发明授权

US08269432B2 Offline LED lighting circuit with dimming control 有权
标题翻译：离线LED照明电路，具有调光控制
公开(公告)号：US08269432B2
公开(公告)日：2012-09-18
申请号：US12769728
申请日：2010-04-29
申请人： Ta-Yung Yang , Chien-Yuan Lin , Chien-Tung Lan
发明人： Ta-Yung Yang , Chien-Yuan Lin , Chien-Tung Lan
IPC分类号： G05F1/00
CPC分类号： H05B33/0845
摘要： An offline LED lighting circuit comprises a controller and a dimming circuit. The controller generates a switching signal to switch a transformer for generating an output voltage and an output current at an output terminal of the offline LED lighting circuit to drive LEDs. The dimming circuit is coupled to the controller to modulate the switching signal in response to a dimming signal. A first reference voltage and a second reference voltage of the controller are generated in response to the dimming signal. The switching signal is modulated by the first reference voltage and the second reference voltage. The controller regulates the output voltage at a first output level and a second output level in response to both the first reference voltage and the second reference voltage. The second output level is lower than the first output level.
摘要翻译：离线LED照明电路包括控制器和调光电路。控制器产生切换信号以切换变压器，以在离线LED照明电路的输出端产生输出电压和输出电流，以驱动LED。调光电路耦合到控制器以响应于调光信号来调制开关信号。响应于调光信号产生控制器的第一参考电压和第二参考电压。开关信号由第一参考电压和第二参考电压调制。控制器响应于第一参考电压和第二参考电压来调节处于第一输出电平的输出电压和第二输出电平。第二个输出电平低于第一个输出电平。

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