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1. 发明授权

US08649191B2 Synchronous rectifier having phase lock circuit coupled to feedback loop for resonant power converters 有权
标题翻译：同步整流器具有耦合到用于谐振功率转换器的反馈回路的锁相电路
公开(公告)号：US08649191B2
公开(公告)日：2014-02-11
申请号：US12579462
申请日：2009-10-15
申请人： Ta-Yung Yang , Chou-Sheng Wang , Rui-Hong Lu
发明人： Ta-Yung Yang , Chou-Sheng Wang , Rui-Hong Lu
IPC分类号： H02M3/335
CPC分类号： H02M3/3376 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A synchronous rectifier for a switching power converter is provided and includes a power transistor, a diode, and a control circuit. The power transistor and the diode are coupled to a transformer and an output of the power converter for the rectification. The control circuit generates a drive signal to switch on the power transistor once the diode is forward biased. The control circuit includes a phase-lock circuit. The phase-lock circuit generates an off signal to switch off the power transistor in response to a pulse width of the drive signal. The pulse width of the drive signal is shorter than a turned-on period of the diode. The phase-lock circuit further reduces the pulse width of the drive signal in response to a feedback signal. The feedback signal is correlated to an output load of the power converter.
摘要翻译：提供了一种用于开关功率转换器的同步整流器，其包括功率晶体管，二极管和控制电路。功率晶体管和二极管耦合到变压器和用于整流的功率转换器的输出端。一旦二极管正向偏置，控制电路产生驱动信号来接通功率晶体管。控制电路包括锁相电路。锁相电路响应于驱动信号的脉冲宽度产生截止信号以关断功率晶体管。驱动信号的脉冲宽度比二极管的导通时间短。相位锁定电路还响应于反馈信号进一步减小驱动信号的脉冲宽度。反馈信号与功率转换器的输出负载相关。

2. 发明授权

US08542507B2 Adaptive synchronous rectification control method and apparatus 有权
标题翻译：自适应同步整流控制方法及装置
公开(公告)号：US08542507B2
公开(公告)日：2013-09-24
申请号：US13069534
申请日：2011-03-23
申请人： Jhih-Da Hsu , Chia-Yo Yeh , Chou-Sheng Wang , Ying-Chieh Su , Rui-Hong Lu
发明人： Jhih-Da Hsu , Chia-Yo Yeh , Chou-Sheng Wang , Ying-Chieh Su , Rui-Hong Lu
IPC分类号： H02H7/125 , H02M3/335
CPC分类号： H02M3/33592 , Y02B70/1475
摘要： An adaptive synchronous rectification control circuit and a control method are developed. The control circuit comprises an adaptive circuit that generates a reference signal in response to a detection signal of a power converter. A clamped circuit clamps the reference signal at a threshold voltage if the reference signal equals or is greater than the threshold voltage. A switching circuit generates a control signal to control a synchronous switch of the power converter in response to the detection signal and the reference signal. The control method generates the reference signal in response to the detection signal. The reference signal is clamped at the threshold voltage if the reference signal equals or is greater than the threshold voltage. The method further generates the control signal to control the synchronous switch of the power converter in response to the detection signal and the reference signal.
摘要翻译：开发了自适应同步整流控制电路和控制方法。控制电路包括响应于功率转换器的检测信号产生参考信号的自适应电路。如果参考信号等于或大于阈值电压，钳位电路将参考信号钳位在阈值电压。切换电路响应于检测信号和参考信号产生控制信号以控制功率转换器的同步开关。控制方法响应于检测信号产生参考信号。如果参考信号等于或大于阈值电压，则参考信号被钳位在阈值电压。该方法还响应于检测信号和参考信号产生控制信号以控制功率转换器的同步开关。

3. 发明授权

US08023289B2 Offline synchronous rectifier with causal circuit for resonant switching power converter 有权
标题翻译：用于谐振开关电源转换器的离线同步整流器
公开(公告)号：US08023289B2
公开(公告)日：2011-09-20
申请号：US12275174
申请日：2008-11-20
申请人： Ta-Yung Yang , Ying-Chieh Su , Chou-Sheng Wang , Tien-Chi Lin , Jhih-Da Hsu
发明人： Ta-Yung Yang , Ying-Chieh Su , Chou-Sheng Wang , Tien-Chi Lin , Jhih-Da Hsu
IPC分类号： H02M3/335 , H02M5/42
CPC分类号： H02M3/33592 , H02M2001/0058 , Y02B70/1433 , Y02B70/1475 , Y02B70/1491
摘要： A synchronous rectifier of a resonant switching power converter is provided to improve efficiency. The synchronous rectifier includes a power transistor and a diode connected to a transformer and an output of the resonant switching power converter for ratifications. A controller generates a drive signal to control the power transistor in response to an on signal and an off signal. A causal circuit is developed to generate the off signal in accordance with the on signal. The on signal is enabled once the diode is forward biased. The on signal is coupled to enable the drive signal for switching on the power transistor. The off signal is coupled to disable the drive signal for switching off the power transistor. The off signal is enabled before the on signal is disabled.
摘要翻译：提供谐振开关电源转换器的同步整流器以提高效率。同步整流器包括功率晶体管和连接到变压器的二极管以及用于批准的谐振开关功率转换器的输出。控制器响应于导通信号和关闭信号产生驱动信号以控制功率晶体管。开发因果电路以根据导通信号产生关断信号。二极管正向偏置后，导通信号使能。接通信号被耦合以使驱动信号能够接通功率晶体管。关断信号被耦合以禁用用于关断功率晶体管的驱动信号。关闭信号在禁用接通信号之前被使能。

4. 发明申请

US20100201334A1 SYNCHRONOUS RECTIFIER HAVING PHASE LOCK CIRCUIT COUPLED TO FEEDBACK LOOP FOR RESONANT POWER CONVERTERS 有权
标题翻译：具有相位锁定电路的同步整流器与谐波电源转换器的反馈环路耦合
公开(公告)号：US20100201334A1
公开(公告)日：2010-08-12
申请号：US12579462
申请日：2009-10-15
申请人： Ta-Yung Yang , Chou-Sheng Wang , Rui-Hong Lu
发明人： Ta-Yung Yang , Chou-Sheng Wang , Rui-Hong Lu
IPC分类号： G05F1/10
CPC分类号： H02M3/3376 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A synchronous rectifier for a switching power converter is provided and includes a power transistor, a diode, and a control circuit. The power transistor and the diode are coupled to a transformer and an output of the power converter for the rectification. The control circuit generates a drive signal to switch on the power transistor once the diode is forward biased. The control circuit includes a phase-lock circuit. The phase-lock circuit generates an off signal to switch off the power transistor in response to a pulse width of the drive signal. The pulse width of the drive signal is shorter than a turned-on period of the diode. The phase-lock circuit further reduces the pulse width of the drive signal in response to a feedback signal. The feedback signal is correlated to an output load of the power converter.
摘要翻译：提供了一种用于开关功率转换器的同步整流器，其包括功率晶体管，二极管和控制电路。功率晶体管和二极管耦合到变压器和用于整流的功率转换器的输出端。一旦二极管正向偏置，控制电路产生驱动信号来接通功率晶体管。控制电路包括锁相电路。锁相电路响应于驱动信号的脉冲宽度产生截止信号以关断功率晶体管。驱动信号的脉冲宽度比二极管的导通时间短。相位锁定电路还响应于反馈信号进一步减小驱动信号的脉冲宽度。反馈信号与功率转换器的输出负载相关。

5. 发明授权

US09379622B2 Power converter and method for controlling power converter 有权
标题翻译：电源转换器及电源转换器控制方法
公开(公告)号：US09379622B2
公开(公告)日：2016-06-28
申请号：US13934242
申请日：2013-07-03
申请人： Chou-Sheng Wang , Chia-Yo Yeh , Rui-Hong Lu , Jhih-Da Hsu , Ying-Chieh Su
发明人： Chou-Sheng Wang , Chia-Yo Yeh , Rui-Hong Lu , Jhih-Da Hsu , Ying-Chieh Su
IPC分类号： H02M3/335
CPC分类号： H02M3/33515 , H02M3/33507 , H02M3/33592 , Y02B70/1475
摘要： A control circuit and a method for controlling a power converter are provided. The method for controlling the power converter includes the following steps. A detection signal is received from the secondary side of the power transformer and a first switching signal is generated in accordance with the detection signal. A second switching signal is generated in accordance with the first switching signal. A voltage signal is generated in accordance with the second switching signal. A comparison signal is generated in accordance with the first switching signal and the second switching signal. The voltage signal and the comparison signal are compared for outputting a comparison result. A gate signal is generated in accordance with the detection signal and the comparison result to control on and off states of a synchronization switch.
摘要翻译：提供了一种用于控制功率转换器的控制电路和方法。用于控制功率转换器的方法包括以下步骤。从电力变压器的次级侧接收检测信号，根据检测信号产生第一切换信号。根据第一切换信号产生第二切换信号。根据第二开关信号产生电压信号。根据第一开关信号和第二开关信号产生比较信号。比较电压信号和比较信号以输出比较结果。根据检测信号和比较结果生成门信号，以控制同步开关的接通和断开状态。

6. 发明授权

US09077258B2 Regulation circuit associated with synchronous rectifier providing cable compensation for the power converter and method thereof 有权
标题翻译：与同步整流器相关联的调节电路为功率转换器提供电缆补偿及其方法
公开(公告)号：US09077258B2
公开(公告)日：2015-07-07
申请号：US13551705
申请日：2012-07-18
申请人： Ta-Yung Yang , Chou-Sheng Wang
发明人： Ta-Yung Yang , Chou-Sheng Wang
IPC分类号： H02M3/335 , H02M1/00
CPC分类号： G05F1/575 , H02M3/33592 , H02M2001/0025 , Y02B70/1475
摘要： A regulation circuit of a power converter for cable compensation according to the present invention comprises a signal generator generating a compensation signal in accordance with a synchronous rectifying signal. An error amplifier has a reference signal for generating a feedback signal in accordance with an output voltage of the power converter. The compensation signal is coupled to program the reference signal. The feedback signal is coupled to generate a switching signal for regulating an output of the power converter. The regulation circuit of the present invention compensates the output voltage without a shunt resistor to sense the output current of the power converter for reducing power loss.
摘要翻译：根据本发明的用于电缆补偿的功率转换器的调节电路包括根据同步整流信号产生补偿信号的信号发生器。误差放大器具有用于根据功率转换器的输出电压产生反馈信号的参考信号。该补偿信号被耦合以对参考信号进行编程。反馈信号被耦合以产生用于调节功率转换器的输出的开关信号。本发明的调节电路在没有分流电阻的情况下补偿输出电压，以感测功率转换器的输出电流以降低功率损耗。

7. 发明申请

US20140009976A1 CONTROL CIRCUIT AND METHOD FOR CONTROLLING POWER CONVERTER 有权
标题翻译：控制电路和控制电源转换器的方法
公开(公告)号：US20140009976A1
公开(公告)日：2014-01-09
申请号：US13934242
申请日：2013-07-03
申请人： Chou-Sheng Wang , Chia-Yo Yeh , Rui-Hong Lu , Jhih-Da Hsu , Ying-Chieh Su
发明人： Chou-Sheng Wang , Chia-Yo Yeh , Rui-Hong Lu , Jhih-Da Hsu , Ying-Chieh Su
IPC分类号： H02M3/335
CPC分类号： H02M3/33515 , H02M3/33507 , H02M3/33592 , Y02B70/1475
摘要： A control circuit and a method for controlling a power converter are provided. The method for controlling the power converter includes the following steps. A detection signal is received from the secondary side of the power transformer and a first switching signal is generated in accordance with the detection signal. A second switching signal is generated in accordance with the first switching signal. A voltage signal is generated in accordance with the second switching signal. A comparison signal is generated in accordance with the first switching signal and the second switching signal. The voltage signal and the comparison signal are compared for outputting a comparison result. A gate signal is generated in accordance with the detection signal and the comparison result to control on and off states of a synchronization switch.
摘要翻译：提供了一种用于控制功率转换器的控制电路和方法。用于控制功率转换器的方法包括以下步骤。从电力变压器的次级侧接收检测信号，根据检测信号产生第一切换信号。根据第一切换信号产生第二切换信号。根据第二开关信号产生电压信号。根据第一开关信号和第二开关信号产生比较信号。比较电压信号和比较信号以输出比较结果。根据检测信号和比较结果生成门信号，以控制同步开关的接通和断开状态。

8. 发明申请

US20100124079A1 OFFLINE SYNCHRONOUS RECTIFIER WITH CAUSAL CIRCUIT FOR RESONANT SWITCHING POWER CONVERTER 有权
标题翻译：用于谐振开关电源转换器的离线同步整流器
公开(公告)号：US20100124079A1
公开(公告)日：2010-05-20
申请号：US12275174
申请日：2008-11-20
申请人： Ta-Yung Yang , Ying-Chieh Su , Chou-Sheng Wang , Tien-Chi Lin , Jhih-Da Hsu
发明人： Ta-Yung Yang , Ying-Chieh Su , Chou-Sheng Wang , Tien-Chi Lin , Jhih-Da Hsu
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , H02M2001/0058 , Y02B70/1433 , Y02B70/1475 , Y02B70/1491
摘要： A synchronous rectifier of a resonant switching power converter is provided to improve efficiency. The synchronous rectifier includes a power transistor and a diode connected to a transformer and an output of the resonant switching power converter for ratifications. A controller generates a drive signal to control the power transistor in response to an on signal and an off signal. A causal circuit is developed to generate the off signal in accordance with the on signal. The on signal is enabled once the diode is forward biased. The on signal is coupled to enable the drive signal for switching on the power transistor. The off signal is coupled to disable the drive signal for switching off the power transistor. The off signal is enabled before the on signal is disabled.
摘要翻译：提供谐振开关电源转换器的同步整流器以提高效率。同步整流器包括功率晶体管和连接到变压器的二极管以及用于批准的谐振开关功率转换器的输出。控制器响应于导通信号和关闭信号产生驱动信号以控制功率晶体管。开发因果电路以根据导通信号产生关断信号。二极管正向偏置后，导通信号使能。接通信号被耦合以使驱动信号能够接通功率晶体管。关断信号被耦合以禁用用于关断功率晶体管的驱动信号。关闭信号在禁用接通信号之前被使能。

9. 发明授权

US08854840B2 Method and apparatus to improve dynamic response of the synchronous rectifying for resonant power converters 有权
标题翻译：改善谐振功率转换器同步整流动态响应的方法和装置
公开(公告)号：US08854840B2
公开(公告)日：2014-10-07
申请号：US12786742
申请日：2010-05-25
申请人： Tien-Chi Lin , Ying-Chieh Su , Chou-Sheng Wang
发明人： Tien-Chi Lin , Ying-Chieh Su , Chou-Sheng Wang
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , Y02B70/1433 , Y02B70/1475
摘要： A synchronous rectifying circuit for a switching power converter is provided. The synchronous rectifying circuit includes a power transistor, a diode, and a control circuit. The power transistor and the diode are coupled to a transformer and an output of the power converter for rectification. The control circuit generates a drive signal to switch on the power transistor once the diode is forward biased. The control circuit includes a monitor circuit. The monitor circuit generates a monitor signal an off signal to switch off the power transistor in response to a pulse width of the drive signal for generating an off signal to switch off the power transistor. The monitor circuit further reduces the pulse width of the drive signal in response to a change of a feedback signal. The feedback signal is correlated to an output load of the power converter.
摘要翻译：提供了一种用于开关电源转换器的同步整流电路。同步整流电路包括功率晶体管，二极管和控制电路。功率晶体管和二极管耦合到变压器和用于整流的功率转换器的输出端。一旦二极管正向偏置，控制电路产生驱动信号来接通功率晶体管。控制电路包括监控电路。监视器电路产生监视信号关闭信号，以响应用于产生截止信号以关断功率晶体管的驱动信号的脉冲宽度来关断功率晶体管。响应于反馈信号的改变，监视电路进一步减小驱动信号的脉冲宽度。反馈信号与功率转换器的输出负载相关。

10. 发明申请

US20120033460A1 High-Side Synchronous Rectifier Circuits and Control Circuits for Power Converters 有权
标题翻译：高边同步整流电路和电源转换器的控制电路
公开(公告)号：US20120033460A1
公开(公告)日：2012-02-09
申请号：US13112414
申请日：2011-05-20
申请人： Chia-Yo Yeh , Jhih-Da Hsu , Ying-Chieh Su , Chien-Chun Huang , Chou-Sheng Wang
发明人： Chia-Yo Yeh , Jhih-Da Hsu , Ying-Chieh Su , Chien-Chun Huang , Chou-Sheng Wang
IPC分类号： H02M3/335
CPC分类号： H02M1/083 , H02M1/44 , H02M3/33592 , H02M2001/0048 , Y02B70/1475 , Y02B70/1491
摘要： A control circuit for a switching power converter is provided. The control circuit is installed between a secondary side and an output of the power converter and coupled to control a switching device. The control circuit includes a linear predict circuit, a reset circuit, a charge/discharge circuit, and a PWM circuit. The linear predict circuit is coupled to receive a linear predict signal from the secondary side for generating a charging signal. The reset circuit is couple to receive a resetting signal for generating a discharging signal. The charge/discharge circuit is coupled to receive the charging signal and the discharging signal for generating a ramp signal. The PWM circuit is coupled to receive the linear predict signal for enabling a switching signal and receive the ramp signal for resetting the switching signal.
摘要翻译：提供了一种用于开关电源转换器的控制电路。控制电路安装在功率转换器的次级侧和输出端之间，并耦合以控制开关装置。控制电路包括线性预测电路，复位电路，充电/放电电路和PWM电路。线性预测电路被耦合以从次级侧接收用于产生充电信号的线性预测信号。复位电路耦合以接收用于产生放电信号的复位信号。充电/放电电路被耦合以接收充电信号和用于产生斜坡信号的放电信号。 PWM电路被耦合以接收用于启用切换信号的线性预测信号并且接收斜坡信号以复位开关信号。

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