专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US06906934B2 Integrated start-up circuit with reduced power consumption 失效
公开(公告)号：US06906934B2
公开(公告)日：2005-06-14
申请号：US10655899
申请日：2003-09-04
申请人： Ta-yung Yang , Song-Yi Lin , Chien Yuan Lin
发明人： Ta-yung Yang , Song-Yi Lin , Chien Yuan Lin
IPC分类号： H02M1/00 , H02M1/36 , H02M1/44 , H02M3/156 , H02M1/12
CPC分类号： H02M1/44 , H02M1/36 , H02M3/156 , H02M2001/0006 , Y10S323/901
摘要： A switching power supply control-circuit according to the present invention uses bleeding resistors to charge a start-up capacitor and discharge an EMI filter. No extra discharge device is needed to accelerate the discharge of the input capacitor, since the start-up capacitor is charged up by the AC input source. A latch circuit of the power supply can be quickly reset after the AC input source is shut off. After the control-circuit begins to operate, the auxiliary winding of the transformer will power the control-circuit. To further reduce power consumption, the auxiliary winding generates a bias voltage to enable line-voltage detection. This allows the power supply to perform line-voltage detection and startup, without having to connect resistors or transistors to the input capacitor.

12. 发明申请

US20050052886A1 Integrated start-up circuit with reduced power consumption 失效
标题翻译：具有降低功耗的集成启动电路
公开(公告)号：US20050052886A1
公开(公告)日：2005-03-10
申请号：US10655899
申请日：2003-09-04
申请人： Ta-yung Yang , Song-Yi Lin , Chien Lin
发明人： Ta-yung Yang , Song-Yi Lin , Chien Lin
IPC分类号： H02M1/00 , H02M1/36 , H02M1/44 , H02M3/156
CPC分类号： H02M1/44 , H02M1/36 , H02M3/156 , H02M2001/0006 , Y10S323/901
摘要： A switching power supply control-circuit according to the present invention uses bleeding resistors to charge a start-up capacitor and discharge an EMI filter. No extra discharge device is needed to accelerate the discharge of the input capacitor, since the start-up capacitor is charged up by the AC input source. A latch circuit of the power supply can be quickly reset after the AC input source is shut off. After the control-circuit begins to operate, the auxiliary winding of the transformer will power the control-circuit. To further reduce power consumption, the auxiliary winding generates a bias voltage to enable line-voltage detection. This allows the power supply to perform line-voltage detection and startup, without having to connect resistors or transistors to the input capacitor.
摘要翻译：根据本发明的开关电源控制电路使用出血电阻器对启动电容器充电并对EMI滤波器进行放电。不需要额外的放电装置来加速输入电容的放电，因为启动电容由AC输入源充电。在AC输入源关闭后，电源的锁存电路可以快速复位。控制电路开始工作后，变压器的辅助绕组将为控制电路供电。为了进一步降低功耗，辅助绕组产生偏置电压以实现线路电压检测。这允许电源执行线路电压检测和启动，而不必将电阻器或晶体管连接到输入电容器。

13. 发明申请

US20070139980A1 SWITCHING CONTROLLER HAVING FREQUENCY HOPPING FOR POWER SUPPLIES AND METHOD THEREFOR 有权
标题翻译：具有电力供应频率的开关控制器及其方法
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。

14. 发明授权

US07184283B2 Switching frequency jitter having output ripple cancel for power supplies 有权
标题翻译：输出纹波的开关频率抖动取消电源
公开(公告)号：US07184283B2
公开(公告)日：2007-02-27
申请号：US10914820
申请日：2004-08-09
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： G06F1/26
摘要： A switching frequency jitter having output ripple cancel includes a pattern generator generating a pattern code in response to a clock signal. An oscillator generates an oscillation signal for determining a switching frequency of a switching signal in response to the variation of the pattern code. An attenuator is connected to a voltage feedback loop for attenuating a feedback signal. The feedback signal is utilized to control the pulse width of the switching signal. A programmable resistor is connected to the attenuator for programming an attenuation rate of the attenuator in response to the pattern code. The attenuation rate is increased whenever 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 of the power supply constant.
摘要翻译：具有输出波纹消除的开关频率抖动包括响应于时钟信号产生模式代码的模式发生器。振荡器响应于模式代码的变化产生用于确定开关信号的开关频率的振荡信号。衰减器连接到用于衰减反馈信号的电压反馈环路。反馈信号用于控制开关信号的脉冲宽度。可编程电阻器连接到衰减器，用于响应于图案代码编程衰减器的衰减率。每当开关频率增加时，衰减率就会增加。因此，开关信号的脉冲宽度减小，这补偿了开关周期的减小，并保持电源的输出功率和输出电压恒定。

15. 发明授权

US07026851B2 PWM controller having frequency jitter for power supplies 有权
标题翻译： PWM控制器具有电源的频率抖动
公开(公告)号：US07026851B2
公开(公告)日：2006-04-11
申请号：US10844677
申请日：2004-05-12
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： H03K3/017
CPC分类号： H03K3/0231 , H02M3/33507 , H03K7/08 , H04B15/04 , H04B2215/064 , H04B2215/067
摘要： A PWM controller having frequency jitter includes a modulator for generating a first jitter current and a second jitter current. An oscillator generates a pulse signal for producing a switching frequency in response to the modulation of the first jitter current. An attenuator is connected in a voltage feedback loop for attenuating a feedback signal to an attenuated feedback signal, in which the attenuated feedback signal is utilized to control an on-time of a switching signal. A variable-resistance circuit is connected with the attenuator for programming an attenuation rate of the attenuator in response to the modulation of the second jitter current. The switching frequency increases whenever the first jitter current increases. Meanwhile, the impedance of the attenuator will decreases and the attenuation rate will increase whenever the second jitter current increase. The on-time of the switching signal is thus immediately reduced, which compensates the decrease of the switching period and keeps the output power as a constant.
摘要翻译：具有频率抖动的PWM控制器包括用于产生第一抖动电流和第二抖动电流的调制器。振荡器响应于第一抖动电流的调制产生用于产生开关频率的脉冲信号。衰减器连接在电压反馈环路中，用于将反馈信号衰减到衰减的反馈信号，其中衰减的反馈信号用于控制开关信号的接通时间。可变电阻电路与衰减器连接，用于响应于第二抖动电流的调制来编程衰减器的衰减率。每当第一个抖动电流增加时，开关频率就会增加。同时，当第二个抖动电流增加时，衰减器的阻抗将降低，衰减率将增加。开关信号的导通时间因此立即减小，这补偿了开关周期的减小并将输出功率保持为常数。

16. 发明申请

US20050253636A1 PWM controller having frequency jitter for power supplies 有权
标题翻译： PWM控制器具有电源的频率抖动
公开(公告)号：US20050253636A1
公开(公告)日：2005-11-17
申请号：US10844677
申请日：2004-05-12
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： H02M3/335 , H03K3/017 , H03K3/0231 , H03K7/08 , H04B15/04
CPC分类号： H03K3/0231 , H02M3/33507 , H03K7/08 , H04B15/04 , H04B2215/064 , H04B2215/067
摘要： A PWM controller having frequency jitter includes a modulator for generating a first jitter current and a second jitter current. An oscillator generates a pulse signal for producing a switching frequency in response to the modulation of the first jitter current. An attenuator is connected in a voltage feedback loop for attenuating a feedback signal to an attenuated feedback signal, in which the attenuated feedback signal is utilized to control an on-time of a switching signal. A variable-resistance circuit is connected with the attenuator for programming an attenuation rate of the attenuator in response to the modulation of the second jitter current. The switching frequency increases whenever the first jitter current increases. Meanwhile, the impedance of the attenuator will decreases and the attenuation rate will increase whenever the second jitter current increase. The on-time of the switching signal is thus immediately reduced, which compensates the decrease of the switching period and keeps the output power as a constant.
摘要翻译：具有频率抖动的PWM控制器包括用于产生第一抖动电流和第二抖动电流的调制器。振荡器响应于第一抖动电流的调制产生用于产生开关频率的脉冲信号。衰减器连接在电压反馈环路中，用于将反馈信号衰减到衰减的反馈信号，其中衰减的反馈信号用于控制开关信号的接通时间。可变电阻电路与衰减器连接，用于响应于第二抖动电流的调制来编程衰减器的衰减率。每当第一个抖动电流增加时，开关频率就会增加。同时，当第二个抖动电流增加时，衰减器的阻抗将降低，衰减率将增加。开关信号的导通时间因此立即减小，这补偿了开关周期的减小并将输出功率保持为常数。

17. 发明授权

US06836415B1 Primary-side regulated pulse width modulation controller with improved load regulation 失效
标题翻译：初级侧调节脉宽调制控制器，具有改进的负载调节
公开(公告)号：US06836415B1
公开(公告)日：2004-12-28
申请号：US10465161
申请日：2003-06-18
申请人： Ta-yung Yang , Chem-Lin Chen , Jenn-yu G. Lin , Song-Yi Lin
发明人： Ta-yung Yang , Chem-Lin Chen , Jenn-yu G. Lin , Song-Yi Lin
IPC分类号： H02M3335
CPC分类号： H02M3/33507 , H01F2038/026 , H02M2001/0006
摘要： The present invention provides a primary-side regulated PWM controller with improved load regulation. In every PWM cycle, a built-in feedback voltage samples and holds a flyback voltage from the auxiliary winding of the transformer via a sampling switch and generates a feedback voltage accordingly. A bias current sink pulls a bias current that is proportional to the feedback voltage. Via a detection resistor, the bias current will produce a voltage drop to compensate the voltage drop of an output rectifying diode as the output load changes. According to the present invention, the bias current can enable the PWM controller to regulate the output voltage very precisely without using a secondary feedback circuit.
摘要翻译：本发明提供了具有改进的负载调节的初级侧调节PWM控制器。在每个PWM周期中，内置的反馈电压通过采样开关采样并保持来自变压器的辅助绕组的反激电压，并产生相应的反馈电压。偏置电流吸收器提供与反馈电压成比例的偏置电流。通过检测电阻，当输出负载变化时，偏置电流将产生电压降，以补偿输出整流二极管的电压降。根据本发明，偏置电流可使PWM控制器非常精确地调节输出电压，而不使用次级反馈电路。

18. 发明申请

US20120098441A1 LED Driving System and Driving Method Thereof 有权
标题翻译： LED驱动系统及其驱动方法
公开(公告)号：US20120098441A1
公开(公告)日：2012-04-26
申请号：US13176131
申请日：2011-07-05
申请人： Song-Yi Lin , Hsuan-I Pan , Hung I Wang
发明人： Song-Yi Lin , Hsuan-I Pan , Hung I Wang
IPC分类号： H05B37/02
CPC分类号： H05B33/0827 , H05B33/0818
摘要： A light emitting diode (LED) driving system drives a plurality of LED strings. A plurality of current sources are respectively connected to the plurality of LED strings. A multi-phase control signal generator generates a plurality of multi-phase control signals that respectively maintain turn on or turn off states of the current sources so as to selectively conduct the corresponding LED strings.
摘要翻译：发光二极管（LED）驱动系统驱动多个LED串。多个电流源分别连接到多个LED串。多相控制信号发生器产生分别保持电流源的导通或截止状态的多个多相控制信号，以选择性地导通相应的LED串。

19. 发明授权

US08004265B2 Variable reference voltage generating circuit using controlled switches 有权
标题翻译：可变参考电压发生电路采用受控开关
公开(公告)号：US08004265B2
公开(公告)日：2011-08-23
申请号：US12249302
申请日：2008-10-10
申请人： Chun Kai Derrick Wei , Kuan-Yeu Chen , Hung I Wang , Song-Yi Lin
发明人： Chun Kai Derrick Wei , Kuan-Yeu Chen , Hung I Wang , Song-Yi Lin
IPC分类号： G05F3/16
CPC分类号： G05F3/16 , Y10T307/826
摘要： A voltage generating circuit for generating a plurality of associated voltages includes a constant current source for generating a constant current; a plurality of resistors connected in series to the constant current source in series for generating a plurality of associated reference voltages; and a first controlled switch connected to a first resistor in parallel, wherein the plurality of associated reference voltages are changed by optionally conducting the first controlled switch to control the flow of the constant current through the first resistor.
摘要翻译：用于产生多个相关电压的电压产生电路包括用于产生恒定电流的恒流源; 串联连接到恒流源的多个电阻器，用于产生多个相关参考电压; 以及并联连接到第一电阻器的第一受控开关，其中通过可选地导通第一受控开关来改变多个相关联的参考电压，以控制通过第一电阻器的恒定电流的流动。

20. 发明授权

US08884545B2 LED driving system and driving method thereof 有权
标题翻译： LED驱动系统及其驱动方法
公开(公告)号：US08884545B2
公开(公告)日：2014-11-11
申请号：US13176131
申请日：2011-07-05
申请人： Song-Yi Lin , Hsuan-I Pan , Hung I Wang
发明人： Song-Yi Lin , Hsuan-I Pan , Hung I Wang
IPC分类号： H05B37/02 , H05B33/08
CPC分类号： H05B33/0827 , H05B33/0818
摘要： A light emitting diode (LED) driving system drives a plurality of LED strings. A plurality of current sources are respectively connected to the plurality of LED strings. A multi-phase control signal generator generates a plurality of multi-phase control signals that respectively maintain turn on or turn off states of the current sources so as to selectively conduct the corresponding LED strings.
摘要翻译：发光二极管（LED）驱动系统驱动多个LED串。多个电流源分别连接到多个LED串。多相控制信号发生器产生分别保持电流源的导通或截止状态的多个多相控制信号，以选择性地导通相应的LED串。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式