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1. 发明授权

US09101015B2 Adaptive bipolar junction transistor gain detection 有权
标题翻译：自适应双极结晶体管增益检测
公开(公告)号：US09101015B2
公开(公告)日：2015-08-04
申请号：US13419329
申请日：2012-03-13
申请人： Liang Yan , Clarita C. Poon , Hien Huu Bui , Chuanyang Wang , Andrew Kwok-Cheung Lee , John William Kesterson
发明人： Liang Yan , Clarita C. Poon , Hien Huu Bui , Chuanyang Wang , Andrew Kwok-Cheung Lee , John William Kesterson
IPC分类号： H02M1/36 , H05B33/08 , H05B41/292 , H05B41/392
CPC分类号： H05B33/0815 , H02M1/36 , H05B33/0848 , H05B41/2928 , H05B41/3925 , Y02B20/347
摘要： A power converter that controls a collector current of a bipolar junction transistor (BJT) by controlling the base current to the BJT after having determined the gain of the BJT. A gain detection block determines a gain of the BJT during a first mode. A current calculation block generates a current setting for the base current based on the gain of the BJT determined by the gain detection block during a second mode distinct from the first mode. In some embodiments, the power converter may be included in a LED lamp system.
摘要翻译：功率转换器，通过在确定BJT的增益之后控制到BJT的基极电流来控制双极结型晶体管（BJT）的集电极电流。增益检测块在第一模式期间确定BJT的增益。当前计算块基于在与第一模式不同的第二模式期间由增益检测块确定的BJT的增益来产生用于基准电流的当前设置。在一些实施例中，功率转换器可以包括在LED灯系统中。

2. 发明申请

US20140022829A1 Hybrid Adaptive Power Factor Correction Schemes For Switching Power Converters 有权
标题翻译：用于开关电源转换器的混合自适应功率因数校正方案
公开(公告)号：US20140022829A1
公开(公告)日：2014-01-23
申请号：US13552567
申请日：2012-07-18
申请人： Fuqiang Shi , Xiaolin Gao , Hien Huu Bui , Yong Li , John William Kesterson
发明人： Fuqiang Shi , Xiaolin Gao , Hien Huu Bui , Yong Li , John William Kesterson
IPC分类号： H02M7/04
CPC分类号： H02M1/4258 , H02M2001/0003 , Y02B70/126
摘要： The embodiments disclosed herein describe a method of a controller of a switching power converter that provides a configurable power factor control method for the switching power converter. In one embodiment, the controller combines power regulation control methods of constant on-time control and constant power control to adjust the power factor of the switching power converter.
摘要翻译：本文公开的实施例描述了提供用于开关功率转换器的可配置功率因数控制方法的开关功率转换器的控制器的方法。在一个实施例中，控制器组合了恒定导通时间控制和恒定功率控制的功率调节控制方法，以调节开关功率转换器的功率因数。

3. 发明授权

US08582329B2 Adaptively controlled soft start-up scheme for switching power converters 有权
标题翻译：用于开关电源转换器的自适应控制软启动方案
公开(公告)号：US08582329B2
公开(公告)日：2013-11-12
申请号：US13076157
申请日：2011-03-30
申请人： Xiaolin Gao , Yong Li , Hien Huu Bui , Fuqiang Shi
发明人： Xiaolin Gao , Yong Li , Hien Huu Bui , Fuqiang Shi
IPC分类号： H02M3/335
CPC分类号： H02M1/36
摘要： A switching power converter provides regulated voltage to a load according to a desired regulation voltage. The switching power converter includes a transformer coupled to a switch and a switch controller for generating a control signal to control switching. The switch controller monitors a sensed voltage representing the output voltage of the switching power converter. The switch controller controls switching of the switch to operate the switching power converter in a continuous conduction mode while the sensed output voltage indicates that the output voltage is less than a first threshold voltage. The switch controller controls switching of the switch to operate the switching power converter in a discontinuous conduction mode while the sensed output voltage is above the first threshold voltage.
摘要翻译：开关电源转换器根据期望的调节电压向负载提供调节电压。开关功率转换器包括耦合到开关的变压器和用于产生控制信号以控制开关的开关控制器。开关控制器监视表示开关功率转换器的输出电压的感测电压。开关控制器控制开关的切换以在连续导通模式下操作开关功率转换器，同时感测的输出电压指示输出电压小于第一阈值电压。开关控制器控制开关的开关以在不连续导通模式下操作开关功率转换器，同时感测的输出电压高于第一阈值电压。

4. 发明授权

US08576586B2 Dynamic drive of switching transistor of switching power converter 有权
标题翻译：开关电源转换器开关晶体管的动态驱动
公开(公告)号：US08576586B2
公开(公告)日：2013-11-05
申请号：US12678690
申请日：2007-09-28
申请人： Junjie Zheng , Jun Zheng , Andrew Kwok-Cheung Lee , John William Kesterson , Allan Ming-Lun Lin , Hien Huu Bui , Carrie Seim , Yong Li
发明人： Junjie Zheng , Jun Zheng , Andrew Kwok-Cheung Lee , John William Kesterson , Allan Ming-Lun Lin , Hien Huu Bui , Carrie Seim , Yong Li
IPC分类号： H02M3/335 , H02M3/337 , H02M3/338
CPC分类号： H02M3/33507 , H02M2001/0032 , H03K17/163 , H03K17/166 , Y02B70/16
摘要： A switching power converter comprises a transformer (110), a switch (108) coupled to the transformer (110), and a switch controller (200) coupled to the switch (108) for generating a switch drive signal (207) to turn on or off the switch (108). The drive current of the switch drive signal (207) is adjusted dynamically according to line or load conditions within a switching cycle and/or over a plurality of switching cycles. The magnitude of the drive current can be dynamically adjusted within a switching cycle and/or over a plurality of switching cycles, in addition to the pulse widths or pulse frequencies of the drive current.
摘要翻译：开关电源转换器包括变压器（110），耦合到变压器（110）的开关（108）和耦合到开关（108）的开关控制器（200），用于产生开关驱动信号（207）以导通或关闭开关（108）。开关驱动信号（207）的驱动电流根据开关周期内和/或多个开关周期中的线路或负载条件动态地调整。除了驱动电流的脉冲宽度或脉冲频率之外，驱动电流的大小可以在开关周期内和/或多个开关周期内动态地调节。

5. 发明授权

US08787039B2 Hybrid adaptive power factor correction schemes for switching power converters 有权
标题翻译：用于开关电源转换器的混合自适应功率因数校正方案
公开(公告)号：US08787039B2
公开(公告)日：2014-07-22
申请号：US13552567
申请日：2012-07-18
申请人： Fuqiang Shi , Xiaolin Gao , Hien Huu Bui , Yong Li , John William Kesterson
发明人： Fuqiang Shi , Xiaolin Gao , Hien Huu Bui , Yong Li , John William Kesterson
IPC分类号： H02M3/335
CPC分类号： H02M1/4258 , H02M2001/0003 , Y02B70/126
摘要： A method of a controller of a switching power converter that provides a configurable power factor control method for the switching power converter. The controller combines power regulation control methods of constant on-time control and constant power control to adjust the power factor of the switching power converter. The controller switches between constant on-time control and constant power control based on an input voltage of the power converter.
摘要翻译：一种提供用于开关功率转换器的可配置功率因数控制方法的开关电源转换器的控制器的方法。该控制器结合了恒定导通时间控制和恒功率控制的功率调节控制方式，以调整开关电源转换器的功率因数。控制器根据功率转换器的输入电压在恒定导通时间控制和恒定功率控制之间切换。

6. 发明申请

US20100202165A1 Dynamic Drive of Switching Transistor of Switching Power Converter 有权
标题翻译：开关电源转换器开关晶体管的动态驱动
公开(公告)号：US20100202165A1
公开(公告)日：2010-08-12
申请号：US12678690
申请日：2007-09-28
申请人： Junjie Zheng , Jun Zheng , Andrew Kwok-Cheung Lee , John William Kesterson , Allan Ming-Lun Lin , Hien Huu Bui , Carrie Seim , Yong Li
发明人： Junjie Zheng , Jun Zheng , Andrew Kwok-Cheung Lee , John William Kesterson , Allan Ming-Lun Lin , Hien Huu Bui , Carrie Seim , Yong Li
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M2001/0032 , H03K17/163 , H03K17/166 , Y02B70/16
摘要： A switching power converter comprises a transformer (110), a switch (108) coupled to the transformer (110), and a switch controller (200) coupled to the switch (108) for generating a switch drive signal (207) to turn on or off the switch (108). The drive current of the switch drive signal (207) is adjusted dynamically according to line or load conditions within a switching cycle and/or over a plurality of switching cycles. The magnitude of the drive current can be dynamically adjusted within a switching cycle and/or over a plurality of switching cycles, in addition to the pulse widths or pulse frequencies of the drive current.
摘要翻译：开关电源转换器包括变压器（110），耦合到变压器（110）的开关（108）和耦合到开关（108）的开关控制器（200），用于产生开关驱动信号（207）以导通或关闭开关（108）。开关驱动信号（207）的驱动电流根据开关周期内和/或多个开关周期中的线路或负载条件动态地调整。除了驱动电流的脉冲宽度或脉冲频率之外，驱动电流的大小可以在开关周期内和/或多个开关周期内动态地调节。

7. 发明申请

US20100165672A1 VALLEY-MODE SWITCHING SCHEMES FOR SWITCHING POWER CONVERTERS 有权
标题翻译：用于切换电力转换器的谷模切换方案
公开(公告)号：US20100165672A1
公开(公告)日：2010-07-01
申请号：US12642261
申请日：2009-12-18
申请人： Yong Li , Hien Huu Bui , Junjie Zheng , John William Kesterson
发明人： Yong Li , Hien Huu Bui , Junjie Zheng , John William Kesterson
IPC分类号： H02M3/335
CPC分类号： H02M3/157 , H02M3/33507
摘要： An improved valley-mode switching (VMS) scheme and circuitry for implementing the improved VMS switching scheme in a switch-mode power converter are disclosed. For a given switching cycle, a desired switch turn-on time is determined based on a pulse width modulation, pulse frequency modulation, or other suitable power converter control scheme. Also, one or more times corresponding to local minimums (valleys) are predicted for the voltage across a power switch of the switching power converter. The power switch is turned on at a valley immediately subsequent or otherwise subsequent to the desired switch time determined according to the power converter control scheme. Thus, the improved VMS scheme enables low-voltage switch operation to reduce switching loss and EMI noise without restricting the control scheme of the power converter.
摘要翻译：公开了一种改进的谷模切换（VMS）方案和用于在开关模式功率转换器中实现改进的VMS切换方案的电路。对于给定的开关周期，基于脉冲宽度调制，脉冲频率调制或其它合适的功率转换器控制方案来确定期望的开关导通时间。此外，对于开关功率转换器的电源开关上的电压，预测对应于局部最小值（谷）的一次或多次。电源开关在紧随其后或者根据功率转换器控制方案确定的所需开关时间之后的谷处开启。因此，改进的VMS方案可实现低压开关操作，从而降低开关损耗和EMI噪声，而不会限制功率转换器的控制方案。

8. 发明申请

US20130242625A1 Adaptive Bipolar Junction Transistor Gain Detection 有权
标题翻译：自适应双极结晶体管增益检测
公开(公告)号：US20130242625A1
公开(公告)日：2013-09-19
申请号：US13419329
申请日：2012-03-13
申请人： Liang Yan , Clarita C. Poon , Hien Huu Bui , Chuanyang Wang , Andrew Kwok-Cheung Lee , John William Kesterson
发明人： Liang Yan , Clarita C. Poon , Hien Huu Bui , Chuanyang Wang , Andrew Kwok-Cheung Lee , John William Kesterson
IPC分类号： H02M1/36
CPC分类号： H05B33/0815 , H02M1/36 , H05B33/0848 , H05B41/2928 , H05B41/3925 , Y02B20/347
摘要： A power converter that controls a collector current of a bipolar junction transistor (BJT) by controlling the base current to the BJT after having determined the gain of the BJT. A gain detection block determines a gain of the BJT during a first mode. A current calculation block generates a current setting for the base current based on the gain of the BJT determined by the gain detection block during a second mode distinct from the first mode. In some embodiments, the power converter may be included in a LED lamp system.
摘要翻译：功率转换器，通过在确定BJT的增益之后控制到BJT的基极电流来控制双极结型晶体管（BJT）的集电极电流。增益检测块在第一模式期间确定BJT的增益。当前计算块基于在与第一模式不同的第二模式期间由增益检测块确定的BJT的增益来产生用于基准电流的当前设置。在一些实施例中，功率转换器可以包括在LED灯系统中。

9. 发明授权

US08755203B2 Valley-mode switching schemes for switching power converters 有权
标题翻译：用于开关电源转换器的谷模切换方案
公开(公告)号：US08755203B2
公开(公告)日：2014-06-17
申请号：US12642261
申请日：2009-12-18
申请人： Yong Li , Hien Huu Bui , Junjie Zheng , John William Kesterson
发明人： Yong Li , Hien Huu Bui , Junjie Zheng , John William Kesterson
IPC分类号： H02M3/335
CPC分类号： H02M3/157 , H02M3/33507
摘要： An improved valley-mode switching (VMS) scheme and circuitry for implementing the improved VMS switching scheme in a switch-mode power converter are disclosed. For a given switching cycle, a desired switch turn-on time is determined based on a pulse width modulation, pulse frequency modulation, or other suitable power converter control scheme. Also, one or more times corresponding to local minimums (valleys) are predicted for the voltage across a power switch of the switching power converter. The power switch is turned on at a valley immediately subsequent or otherwise subsequent to the desired switch time determined according to the power converter control scheme. Thus, the improved VMS scheme enables low-voltage switch operation to reduce switching loss and EMI noise without restricting the control scheme of the power converter.
摘要翻译：公开了一种改进的谷模切换（VMS）方案和用于在开关模式功率转换器中实现改进的VMS切换方案的电路。对于给定的开关周期，期望的开关导通时间基于脉宽调制，脉冲频率调制或其它合适的功率转换器控制方案来确定。此外，对于开关功率转换器的电源开关上的电压，预测对应于局部最小值（谷）的一次或多次。电源开关在紧随其后或者根据功率转换器控制方案确定的所需开关时间之后的谷处开启。因此，改进的VMS方案可实现低压开关操作，从而降低开关损耗和EMI噪声，而不会限制功率转换器的控制方案。

10. 发明申请

US20120176819A1 ADAPTIVELY CONTROLLED SOFT START-UP SCHEME FOR SWITCHING POWER CONVERTERS 有权
标题翻译：用于切换电源转换器的自适应控制软启动方案
公开(公告)号：US20120176819A1
公开(公告)日：2012-07-12
申请号：US13076157
申请日：2011-03-30
申请人： Xiaolin Gao , Yong Li , Hien Huu Bui , Fuqiang Shi
发明人： Xiaolin Gao , Yong Li , Hien Huu Bui , Fuqiang Shi
IPC分类号： H02M3/335
CPC分类号： H02M1/36
摘要： A switching power converter provides regulated voltage to a load according to a desired regulation voltage. The switching power converter includes a transformer coupled to a switch and a switch controller for generating a control signal to control switching. The switch controller monitors a sensed voltage representing the output voltage of the switching power converter. The switch controller controls switching of the switch to operate the switching power converter in a continuous conduction mode while the sensed output voltage indicates that the output voltage is less than a first threshold voltage. The switch controller controls switching of the switch to operate the switching power converter in a discontinuous conduction mode while the sensed output voltage is above the first threshold voltage.
摘要翻译：开关电源转换器根据期望的调节电压向负载提供调节电压。开关功率转换器包括耦合到开关的变压器和用于产生控制信号以控制开关的开关控制器。开关控制器监视表示开关功率转换器的输出电压的感测电压。开关控制器控制开关的切换以在连续导通模式下操作开关功率转换器，同时感测的输出电压指示输出电压小于第一阈值电压。开关控制器控制开关的开关以在不连续导通模式下操作开关功率转换器，同时感测的输出电压高于第一阈值电压。

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