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1. 发明授权

US08461915B2 Start-up circuit to discharge EMI filter for power saving of power supplies 有权
标题翻译：启动电路放电EMI滤波器，节省电源
公开(公告)号：US08461915B2
公开(公告)日：2013-06-11
申请号：US12539722
申请日：2009-08-12
申请人： Wei-Hsuan Huang , Meng-Jen Tsai , Chien-Yuan Lin , Ming-Chang Tsou , Chuan-Chang Li , Gwo-Hwa Wang
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： G05F1/10 , G05F3/02
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。

2. 发明授权

US08331070B2 Power supply with open-loop protection 有权
标题翻译：电源具有开环保护功能
公开(公告)号：US08331070B2
公开(公告)日：2012-12-11
申请号：US12821511
申请日：2010-06-23
申请人： Wei-Hsuan Huang , Meng-Jen Tsai , Chien-Yuan Lin , Chuan-Chang Li
发明人： Wei-Hsuan Huang , Meng-Jen Tsai , Chien-Yuan Lin , Chuan-Chang Li
IPC分类号： H02H3/24
CPC分类号： H02M1/32 , H02M3/33523
摘要： A power supply with an open-loop protection according to the present invention comprises a transformer, a switch, a signal generation circuit, a feedback detection circuit, a brown-out detection circuit, and a delay circuit. The transformer receives an input voltage. The switch is coupled to the transformer for switching the transformer. The signal generation circuit generates a switching signal to control the switch. The feedback detection circuit generates a pull-high signal in response to a feedback signal of the power supply. The brown-out detection circuit generates a delay signal in response to the pull-high signal and the input voltage. The delay circuit counts a delay time in response to the delay signal for generating a disabling signal coupled to the signal generation circuit to latch the switching signal. The brown-out detection circuit is utilized to detect whether the input voltage is in the brown-out condition for determining whether the open-loop protection is executed.
摘要翻译：根据本发明的具有开环保护的电源包括变压器，开关，信号发生电路，反馈检测电路，欠压检测电路和延迟电路。变压器接收输入电压。开关耦合到变压器以切换变压器。信号发生电路产生开关信号以控制开关。反馈检测电路响应于电源的反馈信号产生拉高信号。欠压检测电路响应于上拉电阻和输入电压产生延迟信号。延迟电路响应于用于产生耦合到信号发生电路的禁用信号的延迟信号来计数延迟时间以锁存开关信号。欠压检测电路用于检测输入电压是否处于用于确定是否执行开环保护的欠压状态。

3. 发明授权

US07710095B2 Power converter having PWM controller for maximum output power compensation 有权
标题翻译：电源转换器具有PWM控制器，可实现最大的输出功率补偿
公开(公告)号：US07710095B2
公开(公告)日：2010-05-04
申请号：US12024679
申请日：2008-02-01
申请人： Wei-Hsuan Huang , Chien-Yuan Lin , Cheng-Chi Hsueh
发明人： Wei-Hsuan Huang , Chien-Yuan Lin , Cheng-Chi Hsueh
IPC分类号： G05F1/40 , H02M7/10
CPC分类号： H02M3/33507 , H02M1/32
摘要： A PWM controller compensates a maximum output power of a power converter having a power switch. The PWM controller includes an oscillator for generating a saw signal and a pulse signal, a power limiter coupled to the oscillator for generating a saw-limited signal in response to the saw signal, and a PWM unit coupled to the power limiter and the oscillator to generate a PWM signal for controlling the power switch in response to the saw-limited signal and the pulse signal. The saw-limited signal has a level being flattened during a period of time before an output voltage is generated, and is then transformed to a saw-limited waveform after the period of time.
摘要翻译： PWM控制器补偿具有电源开关的功率转换器的最大输出功率。 PWM控制器包括用于产生锯信号和脉冲信号的振荡器，耦合到振荡器的功率限制器，用于响应于锯信号产生锯限制信号;以及PWM单元，耦合到功率限制器和振荡器产生用于响应于锯限制信号和脉冲信号来控制功率开关的PWM信号。锯限制信号在产生输出电压之前的一段时间内具有被平坦化的电平，然后在该时间段之后变换为锯限制波形。

4. 发明申请

US20080291700A1 POWER CONVERTER HAVING PWM CONTROLLER FOR MAXIMUM OUTPUT POWER COMPENSATION 有权
标题翻译：具有PWM控制器的电源转换器，用于最大输出功率补偿
公开(公告)号：US20080291700A1
公开(公告)日：2008-11-27
申请号：US12024679
申请日：2008-02-01
申请人： Wei-Hsuan Huang , Chien-Yuan Lin , Cheng-Chi Hsueh
发明人： Wei-Hsuan Huang , Chien-Yuan Lin , Cheng-Chi Hsueh
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M1/32
摘要： A PWM controller compensates a maximum output power of a power converter having a power switch. The PWM controller includes an oscillator for generating a saw signal and a pulse signal, a power limiter coupled to the oscillator for generating a saw-limited signal in response to the saw signal, and a PWM unit coupled to the power limiter and the oscillator to generate a PWM signal for controlling the power switch in response to the saw-limited signal and the pulse signal. The saw-limited signal has a level being flattened during a period of time before an output voltage is generated, and is then transformed to a saw-limited waveform after the period of time.
摘要翻译： PWM控制器补偿具有电源开关的功率转换器的最大输出功率。 PWM控制器包括用于产生锯信号和脉冲信号的振荡器，耦合到振荡器的功率限制器，用于响应于锯信号产生锯限制信号;以及PWM单元，耦合到功率限制器和振荡器产生用于响应于锯限制信号和脉冲信号来控制功率开关的PWM信号。锯限制信号在产生输出电压之前的一段时间内具有被平坦化的电平，然后在该时间段之后变换为锯限制波形。

5. 发明授权

US09306459B2 Control circuit for burst switching of power converter and method thereof 有权
标题翻译：功率转换器突发交换控制电路及其方法
公开(公告)号：US09306459B2
公开(公告)日：2016-04-05
申请号：US13171497
申请日：2011-06-29
申请人： Ta-Yung Yang , Wei-Hsuan Huang , Chi-Chen Chung
发明人： Ta-Yung Yang , Wei-Hsuan Huang , Chi-Chen Chung
IPC分类号： H02M3/335 , H02M1/00
CPC分类号： H02M3/33507 , H02M3/33515 , H02M2001/0035 , Y02B70/16
摘要： This invention provides a control circuit for burst switching of a power converter comprising: an adaptive circuit generating an adaptive threshold in response to a feedback signal correlated to an output load of the power converter; and a switching circuit generating a switching signal to switch a transformer of the power converter in accordance with the adaptive threshold and the feedback signal for regulating an output of the power converter.
摘要翻译：本发明提供了一种用于功率转换器的突发切换的控制电路，包括：自适应电路，响应于与功率转换器的输出负载相关的反馈信号而产生自适应阈值; 以及开关电路，其根据自适应阈值和用于调节功率转换器的输出的反馈信号产生切换信号以切换功率转换器的变压器。

6. 发明授权

US09093993B2 Power saving circuit for PWM circuit 有权
标题翻译： PWM电路省电电路
公开(公告)号：US09093993B2
公开(公告)日：2015-07-28
申请号：US12183111
申请日：2008-07-31
申请人： Wei-Hsuan Huang
发明人： Wei-Hsuan Huang
IPC分类号： G05F1/46 , H03K3/0231 , H02M3/335 , H03K3/012 , H03K7/08 , H02M1/00
CPC分类号： H03K3/0231 , H02M3/33507 , H02M2001/0032 , H03K3/012 , H03K7/08 , Y02B70/16
摘要： The present invention provides a power saving circuit for PWM circuit. The power saving circuit is utilized to control at least one internal circuit. The power saving circuit comprises a switching circuit which generates a switching signal. The power saving circuit controls the internal circuit in response to the switching. The power saving circuit disables the internal circuit for power saving when the switching signal is disabled.
摘要翻译：本发明提供一种PWM电路的省电电路。省电电路用于控制至少一个内部电路。省电电路包括产生开关信号的开关电路。省电电路响应于切换控制内部电路。当禁用开关信号时，省电电路禁用内部电路进行省电。

7. 发明申请

US20100033991A1 SWITCHING CONTROLLER HAVING SWITCHING FREQUENCY HOPPING FOR POWER CONVERTER 有权
标题翻译：切换控制器切换电源转换器频率
公开(公告)号：US20100033991A1
公开(公告)日：2010-02-11
申请号：US12276415
申请日：2008-11-24
申请人： Wei-Hsuan Huang , Jenn-Yu G. Lin , Ta-Yung Yang
发明人： Wei-Hsuan Huang , Jenn-Yu G. Lin , Ta-Yung Yang
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M1/44
摘要： A switching controller having switching frequency hopping for a power converter includes a first oscillator generating a pulse signal and a maximum duty-cycle signal for determining a switching frequency of a switching signal, a pattern generator having a second oscillator and generating a digital pattern code in response to a clock signal, a programmable capacitor coupled to the pattern generator and the first oscillator for modulating the switching frequency of the switching signal in response to the digital pattern code, and a PWM circuit coupled to the first oscillator for generating the switching signal in accordance with the maximum duty-cycle signal. A maximum on-time of the switching signal is limited by the maximum duty-cycle signal. The switching signal is utilized to switch a transformer of the power converter.
摘要翻译：具有用于功率转换器的开关跳频的开关控制器包括产生脉冲信号的第一振荡器和用于确定开关信号的开关频率的最大占空比信号，具有第二振荡器并产生数字模式代码的模式发生器响应于时钟信号，耦合到模式发生器的可编程电容器和用于响应于数字模式代码调制开关信号的开关频率的第一振荡器，以及耦合到第一振荡器的PWM电路，用于产生开关信号根据最大占空比信号。开关信号的最大导通时间受到最大占空比信号的限制。切换信号用于切换功率转换器的变压器。

8. 发明授权

US08576595B2 Method and apparatus of providing a biased current limit for limiting maximum output power of power converters 有权
标题翻译：提供用于限制功率转换器的最大输出功率的偏置电流限制的方法和装置
公开(公告)号：US08576595B2
公开(公告)日：2013-11-05
申请号：US13237957
申请日：2011-09-21
申请人： Shao-Chun Huang , Chien-Tsun Hsu , Jian-Ming Fu , Wei-Hsuan Huang , Ta-Yung Yang
发明人： Shao-Chun Huang , Chien-Tsun Hsu , Jian-Ming Fu , Wei-Hsuan Huang , Ta-Yung Yang
IPC分类号： H02M3/24
CPC分类号： H02M3/33507
摘要： A biased current-limit circuit for limiting a maximum output power of a power converter includes an oscillator for generating a pulse signal and an oscillation signal. A waveform generator generates a waveform signal in response to the oscillation signal. A sample-hold circuit is used to sample the waveform signal to generate a hold signal in response to a switching signal. The sample-hold circuit further samples the hold signal to generate a current-limit threshold in response to a second-sampling signal. A current comparator is utilized to compare a current-sensing signal with the current-limit threshold to limit a maximum on-time of the switching signal.
摘要翻译：用于限制功率转换器的最大输出功率的偏置限流电路包括用于产生脉冲信号和振荡信号的振荡器。波形发生器响应于振荡信号产生波形信号。采样保持电路用于对波形信号进行采样以产生响应于开关信号的保持信号。采样保持电路还对保持信号采样，以响应于第二采样信号产生限流阈值。利用电流比较器将电流感测信号与限流阈值进行比较，以限制开关信号的最大导通时间。

9. 发明授权

US08559196B2 Output voltage control circuit of power converter for light-load power saving 有权
标题翻译：电源转换器输出电压控制电路，轻载省电
公开(公告)号：US08559196B2
公开(公告)日：2013-10-15
申请号：US12720096
申请日：2010-03-09
申请人： Ta-Yung Yang , Wei-Hsuan Huang , Chuh-Ching Li , Rui-Hong Lu , Jenn-Yu G. Lin
发明人： Ta-Yung Yang , Wei-Hsuan Huang , Chuh-Ching Li , Rui-Hong Lu , Jenn-Yu G. Lin
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M2001/0032 , Y02B70/16
摘要： A control circuit of a power converter for light-load power saving according to the present invention comprises a first feedback circuit coupled to an output voltage of the power converter to receive a first feedback signal. A second feedback circuit is coupled to the output voltage to receive a second feedback signal. A control circuit generates a switching signal for switching a transformer of the power converter and regulating the output voltage of the power converter in response to the first feedback signal and the second feedback signal. The switching signal is generated in accordance with the first feedback signal when an output load is high. The switching signal is generated in accordance with the second feedback signal during a light-load condition.
摘要翻译：根据本发明的用于轻载省电的功率转换器的控制电路包括耦合到功率转换器的输出电压的第一反馈电路以接收第一反馈信号。第二反馈电路耦合到输出电压以接收第二反馈信号。控制电路响应于第一反馈信号和第二反馈信号产生用于切换功率转换器的变压器的开关信号并调节功率转换器的输出电压。当输出负载高时，根据第一反馈信号产生开关信号。在轻负载状态期间根据第二反馈信号产生开关信号。

10. 发明申请

US20120206944A1 CONTROL CIRCUIT FOR BURST SWITCHING OF POWER CONVERTER AND METHOD THEREOF 有权
标题翻译：用于电力转换器的冲击开关的控制电路及其方法
公开(公告)号：US20120206944A1
公开(公告)日：2012-08-16
申请号：US13171497
申请日：2011-06-29
申请人： Ta-Yung Yang , Wei-Hsuan Huang , Chi-Chen Chung
发明人： Ta-Yung Yang , Wei-Hsuan Huang , Chi-Chen Chung
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M3/33515 , H02M2001/0035 , Y02B70/16
摘要： This invention provides a control circuit for burst switching of a power converter comprising: an adaptive circuit generating an adaptive threshold in response to a feedback signal correlated to an output load of the power converter; and a switching circuit generating a switching signal to switch a transformer of the power converter in accordance with the adaptive threshold and the feedback signal for regulating an output of the power converter.
摘要翻译：本发明提供了一种用于功率转换器的突发切换的控制电路，包括：自适应电路，响应于与功率转换器的输出负载相关的反馈信号而产生自适应阈值; 以及开关电路，其根据自适应阈值和用于调节功率转换器的输出的反馈信号产生切换信号以切换功率转换器的变压器。

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