专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US07885084B2 Control circuit for synchronous rectifying and soft switching of power converters 有权
标题翻译：电源转换器同步整流和软开关控制电路
公开(公告)号：US07885084B2
公开(公告)日：2011-02-08
申请号：US11866778
申请日：2007-10-03
申请人： Ta-yung Yang , Pei-Sheng Tsu , Chou-Sheng Wang
发明人： Ta-yung Yang , Pei-Sheng Tsu , Chou-Sheng Wang
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , Y02B70/1475
摘要： A control circuit for soft switching and synchronous rectifying is provided for power converter. A switching-signal circuit is used for generating drive signals and a pulse signal in response to a leading edge and a trailing edge of a switching signal. The switching signal is developed for regulating the power converter. Drive signals are coupled to switch the power transformer. A propagation delay is developed between drive signals to achieve soft switching of the power converter. An isolation device is coupled to transfer the pulse signal from a primary side of a power transformer to a secondary side of the power transformer. A controller of the integrated synchronous rectifier is coupled to the secondary side of the power transformer for the rectifying operation. The controller is operated to receive the pulse signal for switching on/off the power transistor. The pulse signal is to set or reset a latch circuit of the controller for controlling the power transistor.
摘要翻译：为电源转换器提供了软开关和同步整流的控制电路。开关信号电路用于响应于开关信号的前沿和后沿而产生驱动信号和脉冲信号。开关信号用于调节功率转换器。驱动信号被耦合以切换电力变压器。在驱动信号之间产生传播延迟，以实现功率转换器的软开关。耦合隔离装置以将脉冲信号从电力变压器的初级侧传送到电力变压器的次级侧。集成式同步整流器的控制器耦合到电力变压器的次级侧用于整流操作。操作控制器接收用于接通/关断功率晶体管的脉冲信号。脉冲信号用于设置或复位用于控制功率晶体管的控制器的锁存电路。

12. 发明申请

US20100014324A1 OFFLINE SYNCHRONOUS RECTIFYING CIRCUIT WITH SENSE TRANSISTOR FOR RESONANT SWITCHING POWER CONVERTER 有权
标题翻译：用于谐振开关电源转换器的带有感应晶体管的离线同步整流电路
公开(公告)号：US20100014324A1
公开(公告)日：2010-01-21
申请号：US12176427
申请日：2008-07-21
申请人： Ta-Yung Yang , Chen-Hui Chan , Chou-Sheng Wang , Shih-Hung Hsieh
发明人： Ta-Yung Yang , Chen-Hui Chan , Chou-Sheng Wang , Shih-Hung Hsieh
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , H02M2001/0009 , Y02B70/1433 , Y02B70/1475
摘要： A synchronous rectifying circuit of a resonant switching power converter is provided to improve the efficiency. The synchronous rectifying circuit includes a power transistor and a diode connected to a transformer and an output ground of the power converter for rectifying. A sense transistor is coupled to the power transistor for generating a mirror current correlated to a current of the power transistor. A controller generates a driving signal to control the power transistor in response to a switching-current signal. A current-sense device is coupled to the sense transistor for generating the switching-current signal in response to the mirror current. The controller enables the driving signal to turn on the power transistor once the diode is forwardly biased. The controller generates a reset signal to disable the driving signal and turn off the power transistor once the switching-current signal is lower than a threshold.
摘要翻译：提供谐振开关电源转换器的同步整流电路以提高效率。同步整流电路包括功率晶体管和连接到变压器的二极管和用于整流的功率转换器的输出地。感测晶体管耦合到功率晶体管，用于产生与功率晶体管的电流相关的反射镜电流。控制器响应于开关电流信号产生驱动信号以控制功率晶体管。电流感测装置耦合到感测晶体管，用于响应于反射镜电流产生开关电流信号。一旦二极管向前偏置，控制器使驱动信号接通功率晶体管。一旦开关电流信号低于阈值，控制器产生复位信号来禁止驱动信号并关断功率晶体管。

13. 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。

14. 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。

15. 发明申请

US20090091951A1 CONTROL CIRCUIT FOR SYNCHRONOUS RECTIFYING AND SOFT SWITCHING OF POWER CONVERTERS 有权
标题翻译：电力变压器同步整流和软开关控制电路
公开(公告)号：US20090091951A1
公开(公告)日：2009-04-09
申请号：US11866778
申请日：2007-10-03
申请人： Ta-yung Yang , Pei-Sheng Tsu , Chou-Sheng Wang
发明人： Ta-yung Yang , Pei-Sheng Tsu , Chou-Sheng Wang
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , Y02B70/1475
摘要： A control circuit for soft switching and synchronous rectifying is provided for power converter. A switching-signal circuit is used for generating drive signals and a pulse signal in response to a leading edge and a trailing edge of a switching signal. The switching signal is developed for regulating the power converter. Drive signals are coupled to switch the power transformer. A propagation delay is developed between drive signals to achieve soft switching of the power converter. An isolation device is coupled to transfer the pulse signal from a primary side of a power transformer to a secondary side of the power transformer. A controller of the integrated synchronous rectifier is coupled to the secondary side of the power transformer for the rectifying operation. The controller is operated to receive the pulse signal for switching on/off the power transistor. The pulse signal is to set or reset a latch circuit of the controller for controlling the power transistor.
摘要翻译：为电源转换器提供了软开关和同步整流的控制电路。开关信号电路用于响应于开关信号的前沿和后沿而产生驱动信号和脉冲信号。开关信号用于调节功率转换器。驱动信号被耦合以切换电力变压器。在驱动信号之间产生传播延迟，以实现功率转换器的软开关。耦合隔离装置以将脉冲信号从电力变压器的初级侧传送到电力变压器的次级侧。集成式同步整流器的控制器耦合到电力变压器的次级侧用于整流操作。操作控制器接收用于接通/关断功率晶体管的脉冲信号。脉冲信号用于设置或复位用于控制功率晶体管的控制器的锁存电路。

16. 发明授权

US08154888B2 Offline synchronous rectifier circuit with turned-on arbiter and phase-lock for switching power converters 有权
标题翻译：具有开启电源转换器的开启仲裁器和相位锁定的离线同步整流电路
公开(公告)号：US08154888B2
公开(公告)日：2012-04-10
申请号：US12348335
申请日：2009-01-05
申请人： Ta-Yung Yang , Chou-Sheng Wang , Pei-Sheng Tsu
发明人： Ta-Yung Yang , Chou-Sheng Wang , Pei-Sheng Tsu
IPC分类号： H02M3/335 , H02H7/122
CPC分类号： H02M3/33592 , Y02B70/1475
摘要： A synchronous rectifier circuit of a switching power converter is provided and includes first and second power transistors and first and second diodes connected to a transformer and an output of the power converter for rectifying. An arbiter circuit generates a lock signal to prevent the second power transistor from being turned on when the first power transistor is turned on. A controller generates a drive signal to control the first power transistor according to an on signal and an off signal. A phase-lock circuit generates the off signal according to the on signal. The on signal is enabled once the first diode is forward biased. The one signal enables the drive signal for turning on the first power transistor. The off signal disables the drive signal for turning off the first power transistor. The off signal is enabled before the disabling of the on signal.
摘要翻译：提供了一种开关电源转换器的同步整流电路，包括第一和第二功率晶体管以及连接到变压器的第一和第二二极管以及用于整流的功率转换器的输出。仲裁器电路产生锁定信号，以防止当第一功率晶体管导通时第二功率晶体管导通。控制器根据接通信号和截止信号产生驱动信号以控制第一功率晶体管。锁相电路根据接通信号产生关断信号。第一个二极管正向偏置后，导通信号被使能。一个信号使得驱动信号能够接通第一功率晶体管。关闭信号禁用用于关闭第一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。

17. 发明授权

US08072787B2 Synchronous rectifying for soft switching power converters 有权
标题翻译：软开关电源转换器的同步整流
公开(公告)号：US08072787B2
公开(公告)日：2011-12-06
申请号：US11924761
申请日：2007-10-26
申请人： Ta-Yung Yang , Wei-Li Hsu , Chou-Sheng Wang
发明人： Ta-Yung Yang , Wei-Li Hsu , Chou-Sheng Wang
IPC分类号： H02M7/217
CPC分类号： H02M3/33592 , Y02B70/1475
摘要： An synchronous rectifying apparatus or synchronous rectifying circuit of a soft switching power converter is provided to improve the efficiency. The integrated synchronous rectifying circuit includes: a power transistor connected from a transformer to the output of the power converter for rectifying; a controller having a latch circuit generates a drive signal to control the power transistor in response to a switching signal generated by a winding of the transformer in response to the switching of the transformer. The controller turns off the power transistor when the switching signal is lower than a low-threshold. The power transistor is turned on when the switching signal is higher than a high-threshold. Furthermore, a maximum-on-time circuit provided in the controller is applied to generate a maximum-on-time signal for limiting the maximum on time of the power transistor.
摘要翻译：提供了一种软开关电源转换器的同步整流装置或同步整流电路，以提高效率。集成同步整流电路包括：从变压器连接到功率转换器的输出端的功率晶体管，用于整流; 具有锁存电路的控制器响应于变压器的绕组响应于变压器的切换而产生的开关信号而产生驱动信号以控制功率晶体管。当开关信号低于低阈值时，控制器关闭功率晶体管。当开关信号高于高阈值时，功率晶体管导通。此外，施加设置在控制器中的最大导通时间电路以产生用于限制功率晶体管的最大导通时间的最大导通时间信号。

18. 发明授权

US07911813B2 Offline synchronous rectifying circuit with sense transistor for resonant switching power converter 有权
标题翻译：用于谐振开关电源转换器的带有读出晶体管的离线同步整流电路
公开(公告)号：US07911813B2
公开(公告)日：2011-03-22
申请号：US12176427
申请日：2008-07-21
申请人： Ta-yung Yang , Chen-Hui Chan , Chou-Sheng Wang , Shih-Hung Hsieh
发明人： Ta-yung Yang , Chen-Hui Chan , Chou-Sheng Wang , Shih-Hung Hsieh
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , H02M2001/0009 , Y02B70/1433 , Y02B70/1475
摘要： A synchronous rectifying circuit of a resonant switching power converter is provided to improve the efficiency. The synchronous rectifying circuit includes a power transistor and a diode connected to a transformer and an output ground of the power converter for rectifying. A sense transistor is coupled to the power transistor for generating a mirror current correlated to a current of the power transistor. A controller generates a driving signal to control the power transistor in response to a switching-current signal. A current-sense device is coupled to the sense transistor for generating the switching-current signal in response to the mirror current. The controller enables the driving signal to turn on the power transistor once the diode is forwardly biased. The controller generates a reset signal to disable the driving signal and turn off the power transistor once the switching-current signal is lower than a threshold.
摘要翻译：提供谐振开关电源转换器的同步整流电路以提高效率。同步整流电路包括功率晶体管和连接到变压器的二极管和用于整流的功率转换器的输出地。感测晶体管耦合到功率晶体管，用于产生与功率晶体管的电流相关的反射镜电流。控制器响应于开关电流信号产生驱动信号以控制功率晶体管。电流感测装置耦合到感测晶体管，用于响应于反射镜电流产生开关电流信号。一旦二极管向前偏置，控制器使驱动信号接通功率晶体管。一旦开关电流信号低于阈值，控制器产生复位信号来禁止驱动信号并关断功率晶体管。

19. 发明申请

US20140268914A1 METHOD OF CONTROLLING SYNCHRONOUS RECTIFIER FOR POWER CONVERTER, CONTROL CIRCUIT, AND POWER CONVERTER THEREOF 审中-公开
标题翻译：控制电源转换器，控制电路和电源转换器同步整流器的方法
公开(公告)号：US20140268914A1
公开(公告)日：2014-09-18
申请号：US14217488
申请日：2014-03-18
申请人： Chou-Sheng Wang , Tse-Jen Tseng
发明人： Chou-Sheng Wang , Tse-Jen Tseng
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , Y02B70/1475
摘要： A method for controlling a synchronous rectifier for a power converter, a control circuit, and a power converter thereof are provided. The method comprises the following steps: turning on a transistor by a rectifier; generating a switching-period signal in accordance with a period of a voltage-sensing signal; generating a turn-on-period signal in accordance with a turned-on period of the rectifier; generating a first disabling signal responding to the switching-period signal; and generating a second disabling signal in response to the turn-on-period signal. The transistor is turned off in response to the first disabling signal and the second disabling signal, and the voltage-sensing signal is related to the switching waveform of a transformer.
摘要翻译：提供一种用于控制用于功率转换器的同步整流器的方法，控制电路及其功率转换器。该方法包括以下步骤：通过整流器接通晶体管; 根据电压感测信号的周期生成开关周期信号; 根据整流器的接通周期产生接通周期信号; 产生响应于开关周期信号的第一禁用信号; 以及响应于导通周期信号产生第二禁用信号。响应于第一禁用信号和第二禁用信号，晶体管截止，并且电压感测信号与变压器的开关波形相关。

20. 发明申请

US20140192565A1 CIRCUIT WITH SYNCHRONOUS RECTIFIER FOR CONTROLLING PROGRAMMABLE POWER CONVERTER 审中-公开
标题翻译：同步整流器控制可编程电源转换器的电路
公开(公告)号：US20140192565A1
公开(公告)日：2014-07-10
申请号：US14146022
申请日：2014-01-02
申请人： Chou-Sheng Wang
发明人： Chou-Sheng Wang
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , Y02B70/1475
摘要： A control circuit of a power converter and a method for controlling the power converter are provided. The control circuit of the power converter comprises a switching circuit and a temperature-sensing device. The switching circuit generates a switching signal in response to a feedback signal, and the switching circuit generates a current-sensing signal for regulating an output of the power converter. The temperature-sensing device generates a temperature signal in response to temperature of the temperature-sensing device.
摘要翻译：提供了功率转换器的控制电路和用于控制功率转换器的方法。功率转换器的控制电路包括开关电路和温度感测装置。开关电路响应于反馈信号产生开关信号，并且开关电路产生用于调节功率转换器的输出的电流感测信号。温度感测装置响应于温度感测装置的温度产生温度信号。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式