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1. 发明申请

US20120170321A1 FEEDBACK CIRCUIT WITH REMOTE ON/OFF CONTROL FOR POWER SUPPLY 审中-公开
标题翻译：具有远程开/关控制电源的反馈电路
公开(公告)号：US20120170321A1
公开(公告)日：2012-07-05
申请号：US13293248
申请日：2011-11-10
申请人： TA-YUNG YANG , CHIEN-TSUN HSU
发明人： TA-YUNG YANG , CHIEN-TSUN HSU
IPC分类号： H02M3/335
CPC分类号： H02M3/33523 , H02M2001/0003
摘要： A feedback circuit of power supply according to the present invention comprises a switching controller, an optocoupler, an error amplifier and a timer. The switching controller generates a switching signal in accordance with a feedback signal for regulating an output voltage of the power supply. The optocoupler generates the feedback signal. The error amplifier is coupled to the output voltage of the power supply for generating an amplified signal. The amplified signal is connected to an input of the optocoupler. A remote on/off signal is further coupled to the input of the optocoupler. The timer generates a control signal to disable the switching signal in response to the feedback signal. The control signal is generated after a delay time when the feedback signal is lower than a threshold.
摘要翻译：根据本发明的电源的反馈电路包括开关控制器，光耦合器，误差放大器和定时器。开关控制器根据用于调节电源的输出电压的反馈信号产生开关信号。光耦合器产生反馈信号。误差放大器耦合到电源的输出电压以产生放大的信号。放大的信号连接到光耦合器的输入端。远程开/关信号还耦合到光耦合器的输入端。定时器响应于反馈信号产生控制信号以禁用开关信号。控制信号在反馈信号低于阈值的延迟时间之后产生。

2. 发明申请

US20120008352A1 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最大输出功率的偏置电流限制的方法和装置
公开(公告)号：US20120008352A1
公开(公告)日：2012-01-12
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。

3. 发明申请

US20090200997A1 SWITCHING CONTROLLER HAVING PROGRAMMABLE FEEDBACK CIRCUIT FOR POWER CONVERTERS 有权
标题翻译：具有电源转换器的可编程反馈电路的开关控制器
公开(公告)号：US20090200997A1
公开(公告)日：2009-08-13
申请号：US12262137
申请日：2008-10-30
申请人： Ta-Yung Yang , Chien-Tsun Hsu , Cheng-Sung Chen , Ting-Ta Chiang
发明人： Ta-Yung Yang , Chien-Tsun Hsu , Cheng-Sung Chen , Ting-Ta Chiang
IPC分类号： G05F1/10
CPC分类号： H02M3/156 , H02M2001/0032 , Y02B70/16
摘要： A switching controller for a boost power converter includes a switching-control circuit and a programmable feedback circuit. The programmable feedback circuit is coupled to an output of the boost power converter via a voltage divider. The programmable feedback circuit includes a current source coupled to a switch. On a light-load condition, a power-saving signal turns on the switch. The switch will conduct a programming current supplied by the current source toward the voltage divider. Furthermore, the voltage divider is externally adjustable for programming a determined level of an output voltage of the boost power converter on the light-load condition. Additionally the present invention increases system design flexibility to meet practical power-saving requirements without adding circuitries and increasing cost.
摘要翻译：用于升压功率转换器的开关控制器包括开关控制电路和可编程反馈电路。可编程反馈电路经由分压器耦合到升压功率转换器的输出端。可编程反馈电路包括耦合到开关的电流源。在轻载状态下，省电信号接通开关。开关将通过电流源向分压器提供编程电流。此外，分压器可外部调节，用于在轻负载条件下编程升压功率转换器的输出电压的确定电平。此外，本发明增加了系统设计的灵活性，以满足实际的省电要求，而不增加电路并增加成本。

4. 发明申请

US20130141056A1 ADAPTIVE FREQUENCY COMPENSATION FOR PFC POWER CONVERTER OPERATING IN CCM AND DCM 审中-公开
标题翻译：用于CCM和DCM中PFC功率转换器的自适应频率补偿
公开(公告)号：US20130141056A1
公开(公告)日：2013-06-06
申请号：US13560519
申请日：2012-07-27
申请人： Ta-Yung YANG , Ying-Chi CHEN , Chien-Tsun HSU , Cheng-Sung CHEN
发明人： Ta-Yung YANG , Ying-Chi CHEN , Chien-Tsun HSU , Cheng-Sung CHEN
IPC分类号： G05F1/70
CPC分类号： H02M1/4225 , Y02B70/126 , Y02P80/112
摘要： A control circuit of a power factor correction (PFC) converter is provided. The control circuit includes a pulse width modulation (PWM) circuit, an amplifier, a detection circuit., and a capacitor. The PWM circuit generates a switching signal in response to a loop signal. The amplifier is coupled to generate the loop signal in response to a switching current. The detection circuit generates a mode signal coupled to change output impedance of the amplifier. The capacitor is coupled to the amplifier for loop frequency compensation. The switching signal is coupled to switch an inductor of the PFC power converter and generate the switching current.
摘要翻译：提供功率因数校正（PFC）转换器的控制电路。控制电路包括脉宽调制（PWM）电路，放大器，检测电路和电容器。 PWM电路响应于环路信号产生开关信号。放大器被耦合以响应于开关电流产生环路信号。检测电路产生耦合以改变放大器的输出阻抗的模式信号。电容器耦合到放大器进行环路频率补偿。开关信号被耦合以切换PFC功率转换器的电感器并产生开关电流。

5. 发明授权

US08085021B2 PFC converter having two-level output voltage without voltage undershooting 有权
标题翻译： PFC转换器具有两级输出电压，无电压欠冲击
公开(公告)号：US08085021B2
公开(公告)日：2011-12-27
申请号：US12419302
申请日：2009-04-07
申请人： Cheng-Sung Chen , Chien-Tsun Hsu , Ting-Ta Chiang , Shao-Chun Huang
发明人： Cheng-Sung Chen , Chien-Tsun Hsu , Ting-Ta Chiang , Shao-Chun Huang
IPC分类号： G05F1/56 , G05F1/44 , G05F1/40
CPC分类号： H02M1/4225 , H02M2001/0032 , Y02B70/126 , Y02B70/16
摘要： A switching controller for a PFC converter is provided. The switching controller comprises a switching-control circuit, a current-command circuit, a programmable feedback circuit, a modulator, an over-voltage detection circuit, and a light-load detection circuit. The switching controller is capable of regulating a bulk voltage of the PFC converter at different levels in response to load conditions of the PFC converter. A turbo current eliminates a first voltage undershooting of the bulk voltage at the transient that the bulk voltage decreases to arrive at a second level from a first level. A voltage-loop error signal is maximized to eliminate a second voltage undershooting of the bulk voltage at the transient that the bulk voltage starts to increase toward the first level from the second level.
摘要翻译：提供了一种用于PFC转换器的开关控制器。开关控制器包括开关控制电路，电流指令电路，可编程反馈电路，调制器，过电压检测电路和轻载检测电路。开关控制器能够响应于PFC转换器的负载条件，在不同的电平上调节PFC转换器的体电压。涡轮电流消除了体积电压降低以从第一电平达到第二电平的瞬态时的体电压的第一次电压下冲。电压环路误差信号被最大化以消除体电压开始从第二电平朝向第一电平增加的瞬态下的体电压的第二电压下冲。

6. 发明申请

US20100253307A1 PFC CONVERTER HAVING TWO-LEVEL OUTPUT VOLTAGE WITHOUT VOLTAGE UNDERSHOOTING 有权
标题翻译：具有两级输出电压的PFC转换器，无电压欠压
公开(公告)号：US20100253307A1
公开(公告)日：2010-10-07
申请号：US12419302
申请日：2009-04-07
申请人： Cheng-Sung Chen , Chien-Tsun Hsu
发明人： Cheng-Sung Chen , Chien-Tsun Hsu
IPC分类号： G05F1/10
CPC分类号： H02M1/4225 , H02M2001/0032 , Y02B70/126 , Y02B70/16
摘要： A switching controller for a PFC converter is provided. The switching controller comprises a switching-control circuit, a current-command circuit, a programmable feedback circuit, a modulator, an over-voltage detection circuit, and a light-load detection circuit. The switching controller is capable of regulating a bulk voltage of the PFC converter at different levels in response to load conditions of the PFC converter. A turbo current eliminates a first voltage undershooting of the bulk voltage at the transient that the bulk voltage decreases to arrive at a second level from a first level. A voltage-loop error signal is maximized to eliminate a second voltage undershooting of the bulk voltage at the transient that the bulk voltage starts to increase toward the first level from the second level.
摘要翻译：提供了一种用于PFC转换器的开关控制器。开关控制器包括开关控制电路，电流指令电路，可编程反馈电路，调制器，过电压检测电路和轻载检测电路。开关控制器能够响应于PFC转换器的负载条件，在不同的电平上调节PFC转换器的体电压。涡轮电流消除了体积电压降低以从第一电平达到第二电平的瞬态时的体电压的第一次电压下冲。电压环路误差信号被最大化以消除体电压开始从第二电平朝向第一电平增加的瞬态下的体电压的第二电压下冲。

7. 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。

8. 发明授权

US07999527B2 Switching controller having programmable feedback circuit for power converters 有权
标题翻译：具有用于功率转换器的可编程反馈电路的开关控制器
公开(公告)号：US07999527B2
公开(公告)日：2011-08-16
申请号：US12262137
申请日：2008-10-30
申请人： Ta-Yung Yang , Chien-Tsun Hsu , Cheng-Sung Chen , Ting-Ta Chiang
发明人： Ta-Yung Yang , Chien-Tsun Hsu , Cheng-Sung Chen , Ting-Ta Chiang
IPC分类号： G05F1/40
CPC分类号： H02M3/156 , H02M2001/0032 , Y02B70/16
摘要： A switching controller for a boost power converter includes a switching-control circuit and a programmable feedback circuit. The programmable feedback circuit is coupled to an output of the boost power converter via a voltage divider. The programmable feedback circuit includes a current source coupled to a switch. On a light-load condition, a power-saving signal turns on the switch. The switch will conduct a programming current supplied by the current source toward the voltage divider. Furthermore, the voltage divider is externally adjustable for programming a determined level of an output voltage of the boost power converter on the light-load condition. Additionally the present invention increases system design flexibility to meet practical power-saving requirements without adding circuitries and increasing cost.
摘要翻译：用于升压功率转换器的开关控制器包括开关控制电路和可编程反馈电路。可编程反馈电路经由分压器耦合到升压功率转换器的输出端。可编程反馈电路包括耦合到开关的电流源。在轻载状态下，省电信号接通开关。开关将通过电流源向分压器提供编程电流。此外，分压器可外部调节，用于在轻负载条件下编程升压功率转换器的输出电压的确定电平。此外，本发明增加了系统设计的灵活性，以满足实际的省电要求，而不增加电路并增加成本。

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