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1. 发明申请

US20060007711A1 Half-bridge flyback power converter 有权
标题翻译：半桥反激式电源转换器
公开(公告)号：US20060007711A1
公开(公告)日：2006-01-12
申请号：US10889849
申请日：2004-07-12
申请人： Ta-yung Yang , Song-Yi Lin , Pei-Hsuan Cheng
发明人： Ta-yung Yang , Song-Yi Lin , Pei-Hsuan Cheng
IPC分类号： H02M3/335
CPC分类号： H02M1/34 , H02M3/33569 , H02M2001/346 , Y02B70/1491
摘要： A half-bridge flyback power converter is provided. The half-bridge flyback power converter comprises a high-side switch and a low-side switch periodically conducting an input voltage to a primary winding of a transformer. When the high-side switch and the low-side switch are switched off, energy stored in the transformer is transmitted to a secondary circuit and serves to charge a bulk capacitor. A forward diode facilitates to combine the input voltage with a voltage across the bulk capacitor for powering the secondary circuit. Therefore, the power consumption of the leakage inductance is reduced and circuit topology is simplified.
摘要翻译：提供半桥反激式电源转换器。半桥反激式功率转换器包括周期性地向变压器的初级绕组传导输入电压的高侧开关和低侧开关。当高侧开关和低侧开关关闭时，存储在变压器中的能量被传输到次级电路并用于对大容量电容器充电。正向二极管有助于将输入电压与大容量电容器两端的电压组合起来，为次级电路供电。因此，漏电感的功耗降低，电路拓扑简化。

2. 发明授权

US07061776B2 Half-bridge flyback power converter 有权
公开(公告)号：US07061776B2
公开(公告)日：2006-06-13
申请号：US10889849
申请日：2004-07-12
申请人： Ta-yung Yang , Song-Yi Lin , Pei-Hsuan Cheng
发明人： Ta-yung Yang , Song-Yi Lin , Pei-Hsuan Cheng
IPC分类号： H02M3/335
CPC分类号： H02M1/34 , H02M3/33569 , H02M2001/346 , Y02B70/1491
摘要： A half-bridge flyback power converter is provided. The half-bridge flyback power converter comprises a high-side switch and a low-side switch periodically conducting an input voltage to a primary winding of a transformer. When the high-side switch and the low-side switch are switched off, energy stored in the transformer is transmitted to a secondary circuit and serves to charge a bulk capacitor. A forward diode facilitates to combine the input voltage with a voltage across the bulk capacitor for powering the secondary circuit. Therefore, the power consumption of the leakage inductance is reduced and circuit topology is simplified.

3. 发明授权

US07391628B2 Switching controller having frequency hopping for power supplies and method therefor 有权
标题翻译：具有用于电源的跳频的开关控制器及其方法
公开(公告)号：US07391628B2
公开(公告)日：2008-06-24
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。

4. 发明申请

US20060017426A1 Switching controller having frequency hopping for power supplies 有权
标题翻译：开关控制器具有电源跳频功能
公开(公告)号：US20060017426A1
公开(公告)日：2006-01-26
申请号：US10898389
申请日：2004-07-23
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： G05F1/40
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。

5. 发明授权

US06952354B1 Single stage PFC power converter 有权
标题翻译：单级PFC功率转换器
公开(公告)号：US06952354B1
公开(公告)日：2005-10-04
申请号：US10859811
申请日：2004-06-03
申请人： Ta-yung Yang , Song-Yi Lin , Tso Min Chen
发明人： Ta-yung Yang , Song-Yi Lin , Tso Min Chen
IPC分类号： H02M1/00 , H02M1/42 , H02M3/335
CPC分类号： H02M1/4258 , H02M3/3353 , Y02B70/126 , Y02P80/112
摘要： A single stage PFC power converter is provided for performing a PFC function in a half-bridge flyback power converter. A high-side switch and a low-side switch periodically supply an input voltage to a primary winding of a transformer. When the high-side switch and low-side switch are switched off, the energy stored in the transformer will be transmitted to a secondary circuit and charged to a bulk capacitor. The bulk capacitor serves to recycle the energy and reduce the output ripple noise. A forward diode and a forward inductor serve to forward the energy of the bulk capacitor to the flowing path of the input voltage for performing PFC function.
摘要翻译：提供单级PFC功率转换器，用于在半桥反激式功率转换器中执行PFC功能。高侧开关和低侧开关周期性地向变压器的初级绕组提供输入电压。当高侧开关和低侧开关关闭时，存储在变压器中的能量将传输到次级电路并充电到大容量电容器。大容量电容器用于回收能量并减少输出纹波噪声。正向二极管和正向电感器用于将大容量电容器的能量转发到用于执行PFC功能的输入电压的流动路径。

6. 发明授权

US06862194B2 Flyback power converter having a constant voltage and a constant current output under primary-side PWM control 失效
标题翻译：反激式功率转换器在初级侧PWM控制下具有恒定电压和恒定电流输出
公开(公告)号：US06862194B2
公开(公告)日：2005-03-01
申请号：US10465467
申请日：2003-06-18
申请人： Ta-yung Yang , Chern-Lin Chen , Jenn-yu G. Lin , Song-Yi Lin
发明人： Ta-yung Yang , Chern-Lin Chen , Jenn-yu G. Lin , Song-Yi Lin
IPC分类号： H02M3/335 , H02M7/04
CPC分类号： H02M3/33507 , H02M2001/0006
摘要： A primary-side flyback power converter supplies a constant voltage and a constant current output. To generate a well-regulated output voltage under varying load conditions, the power converter includes a PWM controller. The PWM controller generates a PWM signal to control a switching transistor in response to a flyback voltage detected from the first primary winding of the power supply transformer. To reduce power consumption, the flyback energy of the first primary winding is used as a DC power source for the PWM controller. The flyback voltage is sampled following a delay time to reduce interference from the inductance leakage of the transformer. To generate a more accurate DC output voltage, a bias current is pulled from the detection input to form a voltage drop across a detection resistor for compensating for the voltage drop of the output rectifying diode.
摘要翻译：初级侧反激式功率转换器提供恒定电压和恒定电流输出。为了在变化的负载条件下产生良好调节的输出电压，功率转换器包括PWM控制器。 PWM控制器产生PWM信号以响应于从电源变压器的第一初级绕组检测到的回扫电压来控制开关晶体管。为了降低功耗，第一个初级绕组的回扫能量被用作PWM控制器的直流电源。在延迟时间之后对回扫电压进行采样，以减少变压器的电感泄漏引起的干扰。为了产生更精确的直流输出电压，从检测输入端拉出偏置电流，在检测电阻上形成电压降，以补偿输出整流二极管的电压降。

7. 发明授权

US07203079B2 Switching controller having frequency hopping for power supplies 有权
标题翻译：开关控制器具有电源跳频功能
公开(公告)号：US07203079B2
公开(公告)日：2007-04-10
申请号：US10898389
申请日：2004-07-23
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。

8. 发明申请

US20060031689A1 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：US20060031689A1
公开(公告)日：2006-02-09
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： G06F1/26
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。

9. 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.

10. 发明申请

US20050093528A1 Multiplier-divider circuit for a PFC controller 有权
标题翻译：用于PFC控制器的乘法器分频电路
公开(公告)号：US20050093528A1
公开(公告)日：2005-05-05
申请号：US10700787
申请日：2003-11-03
申请人： Ta-Yung Yang , Song-Yi Lin , Cheng-Chi Hsueh
发明人： Ta-Yung Yang , Song-Yi Lin , Cheng-Chi Hsueh
IPC分类号： G05F1/40 , H02M1/00 , H02M1/42
CPC分类号： H02M1/4208 , H02M1/32 , H02M1/4225 , H02M2001/0012 , Y02B70/126 , Y02P80/112
摘要： The present invention introduces an integrated analog multiplier-divider circuit. The multiplier-divider block according to the present invention is ideal for use in the power factor correction (PFC) controllers of many switch-mode power supplies. The analog multiplier-divider according to the present invention is built from CMOS devices. Because of this, it has many advantages over prior-art multiplier-dividers. One important advantage is that the die-size and the cost can be reduced. Another important advantage of the multiplier-divider according to the present invention is substantially reduced temperature dependence.
摘要翻译：本发明引入了一种集成的模拟乘法器 - 分频器电路。根据本发明的乘法器分频器模块非常适用于许多开关模式电源的功率因数校正（PFC）控制器。根据本发明的模拟乘法器分频器由CMOS器件构成。因此，它比现有技术的乘法器分频器具有许多优点。一个重要的优点是可以减小模具尺寸和成本。根据本发明的乘法器分频器的另一个重要优点是显着降低了温度依赖性。

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