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1. 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.

2. 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。

3. 发明申请

US20070171682A1 Primary side controlled switching regulator 有权
标题翻译：初级侧控制开关调节器
公开(公告)号：US20070171682A1
公开(公告)日：2007-07-26
申请号：US11338791
申请日：2006-01-25
申请人： Ta-yung Yang , Pei-Hsuan Cheng
发明人： Ta-yung Yang , Pei-Hsuan Cheng
IPC分类号： H02M3/335
CPC分类号： H02M1/44 , H02M3/335 , H02M2001/0006
摘要： A switching regulator includes a transformer having a primary winding and an auxiliary winding connected to the supply rail of the switching regulator. The primary winding is coupled to the positive supply rail. The auxiliary winding is coupled to the negative supply rail. A switch is connected in series with the primary winding and the auxiliary winding for switching the transformer. A control circuit is coupled to the switch and the auxiliary winding to generate a switching signal for switching the switch and regulating the output of the switching regulator. A supplied capacitor is connected to the control circuit to supply the power to the control circuit. The auxiliary winding having a leakage inductor stores a stored energy when the switch is on. A diode is coupled from the negative supply rail to the supplied capacitor. The stored energy of the leakage inductor is discharged to the supplied capacitor through the diode once the switch is off. The connection of the transformer and the switch improves the efficiency and reduces the EMI.
摘要翻译：开关调节器包括具有初级绕组和连接到开关调节器的电源轨的辅助绕组的变压器。初级绕组耦合到正电源轨。辅助绕组耦合到负电源轨。开关与初级绕组和辅助绕组串联连接，用于切换变压器。控制电路耦合到开关和辅助绕组，以产生用于切换开关并调节开关调节器的输出的开关信号。所提供的电容器连接到控制电路以向控制电路供电。具有漏电感的辅助绕组在开关接通时存储存储的能量。二极管从负电源轨耦合到所提供的电容器。一旦开关断开，漏电感器的存储能量通过二极管放电到所提供的电容器。变压器和开关的连接提高了效率并降低了EMI。

4. 发明授权

US07310244B2 Primary side controlled switching regulator 有权
公开(公告)号：US07310244B2
公开(公告)日：2007-12-18
申请号：US11338791
申请日：2006-01-25
申请人： Ta-yung Yang , Pei-Hsuan Cheng
发明人： Ta-yung Yang , Pei-Hsuan Cheng
IPC分类号： H02M3/335
CPC分类号： H02M1/44 , H02M3/335 , H02M2001/0006
摘要： A switching regulator includes a transformer having a primary winding and an auxiliary winding connected to the supply rail of the switching regulator. The primary winding is coupled to the positive supply rail. The auxiliary winding is coupled to the negative supply rail. A switch is connected in series with the primary winding and the auxiliary winding for switching the transformer. A control circuit is coupled to the switch and the auxiliary winding to generate a switching signal for switching the switch and regulating the output of the switching regulator. A supplied capacitor is connected to the control circuit to supply the power to the control circuit. The auxiliary winding having a leakage inductor stores a stored energy when the switch is on. A diode is coupled from the negative supply rail to the supplied capacitor. The stored energy of the leakage inductor is discharged to the supplied capacitor through the diode once the switch is off. The connection of the transformer and the switch improves the efficiency and reduces the EMI.

5. 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。

6. 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。

7. 发明授权

US07057440B2 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：US07057440B2
公开(公告)日：2006-06-06
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： G06G7/12
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 with 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。

8. 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。

9. 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。

10. 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。

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