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1. 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。

2. 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。

3. 发明授权

US08289732B2 Controller for switching power converter driving BJT based on primary side adaptive digital control 有权
标题翻译：基于初级侧自适应数字控制的开关电源转换器驱动BJT的控制器
公开(公告)号：US08289732B2
公开(公告)日：2012-10-16
申请号：US12639399
申请日：2009-12-16
申请人： Yong Li , Jun Zheng , Junjie Zheng , John William Kesterson
发明人： Yong Li , Jun Zheng , Junjie Zheng , John William Kesterson
IPC分类号： H02M3/335
CPC分类号： H02M3/33515 , H02M2001/0009
摘要： A controller of an AC/DC flyback switching power supply uses adaptive digital control approaches to control the switching operation of a BJT power switch based on primary-side feedback to regulate the secondary-side constant output voltage and output current, without using the input line voltage. Switching-cycle by switching-cycle peak current control and limit are achieved based on the sensed primary-side current rather than the input line voltage in both constant-voltage and constant-current modes, operating in PWM, PFM and/or combinations of a plurality of PWM and PFM modes. The controller IC does not need a separate pin and ADC circuitry for sensing the input line voltage. The controller IC directly drives the BJT base, and dynamically adjusts the BJT base current amplitude cycle by cycle based on load change.
摘要翻译： AC / DC反激式开关电源的控制器采用自适应数字控制方式，根据初级侧反馈来控制BJT功率开关的开关动作，调节二次侧恒定输出电压和输出电流，不用输入线电压。基于感测到的初级侧电流而不是在恒定电压和恒定电流模式中的输入线电压来实现开关周期峰值电流控制和限制的开关周期，其以PWM，PFM和/或多个PWM和PFM模式。控制器IC不需要单独的引脚和ADC电路来感测输入线电压。控制器IC直接驱动BJT基座，并根据负载变化动态调整BJT基极电流幅度周期。

4. 发明申请

US20100157636A1 CONTROLLER FOR SWITCHING POWER CONVERTER DRIVING BJT BASED ON PRIMARY SIDE ADAPTIVE DIGITAL CONTROL 有权
标题翻译：基于主端自适应数字控制切换功率转换器驱动的控制器
公开(公告)号：US20100157636A1
公开(公告)日：2010-06-24
申请号：US12639399
申请日：2009-12-16
申请人： Yong Li , Jun Zheng , Junjie Zheng , John William Kesterson
发明人： Yong Li , Jun Zheng , Junjie Zheng , John William Kesterson
IPC分类号： H02M7/217
CPC分类号： H02M3/33515 , H02M2001/0009
摘要： A controller of an AC/DC flyback switching power supply uses adaptive digital control approaches to control the switching operation of a BJT power switch based on primary-side feedback to regulate the secondary-side constant output voltage and output current, without using the input line voltage. Switching-cycle by switching-cycle peak current control and limit are achieved based on the sensed primary-side current rather than the input line voltage in both constant-voltage and constant-current modes, operating in PWM, PFM and/or combinations of a plurality of PWM and PFM modes. The controller IC does not need a separate pin and ADC circuitry for sensing the input line voltage. The controller IC directly drives the BJT base, and dynamically adjusts the BJT base current amplitude cycle by cycle based on load change
摘要翻译： AC / DC反激式开关电源的控制器采用自适应数字控制方式，根据初级侧反馈来控制BJT功率开关的开关动作，调节二次侧恒定输出电压和输出电流，不用输入线电压。基于感测到的初级侧电流而不是在恒定电压和恒定电流模式中的输入线电压来实现开关周期峰值电流控制和限制的开关周期，其以PWM，PFM和/或多个PWM和PFM模式。控制器IC不需要单独的引脚和ADC电路来感测输入线电压。控制器IC直接驱动BJT基座，并根据负载变化动态调整BJT基极电流幅度周期

5. 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。

6. 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。

7. 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。

8. 发明申请

US20130121044A1 Power Converter Controller IC Having Pins with Multiple Functions 有权
标题翻译：具有多功能引脚的电源转换器控制器IC
公开(公告)号：US20130121044A1
公开(公告)日：2013-05-16
申请号：US13612607
申请日：2012-09-12
申请人： Xiaolin Gao , Yong Li , Qiu Sha , Fuqiang Shi , John William Kesterson , Jiang Chen
发明人： Xiaolin Gao , Yong Li , Qiu Sha , Fuqiang Shi , John William Kesterson , Jiang Chen
IPC分类号： H02H7/12
CPC分类号： H02M1/32 , H02M3/33523
摘要： A controller integrated circuit (IC) for controlling a power converter uses one or more IC pins having plurality of functions such as configuration of a parameter supported by the controller IC and shutdown protection. Several different functions may be supported by a single IC pin, thereby reducing the number of pins required in the controller IC and also reducing the cost of manufacturing the controller IC. The controller IC may also share a comparison circuit among different pins and the different functions provided by those pins. Use of a shared comparison circuit further reduces the cost of manufacturing the controller IC without sacrificing the performance of the IC.
摘要翻译：用于控制功率转换器的控制器集成电路（IC）使用具有多个功能的一个或多个IC引脚，诸如由控制器IC支持的参数的配置和关断保护。单个IC引脚可以支持几个不同的功能，从而减少了控制器IC中所需的引脚数量，并且还降低了制造控制器IC的成本。控制器IC还可以在不同引脚之间共享比较电路以及由这些引脚提供的不同功能。使用共享比较电路进一步降低了制造控制器IC的成本，而不牺牲IC的性能。

9. 发明授权

US08988902B2 Power converter controller IC having pins with multiple functions 有权
标题翻译：电源转换器控制器IC具有多个功能的引脚
公开(公告)号：US08988902B2
公开(公告)日：2015-03-24
申请号：US13612607
申请日：2012-09-12
申请人： Xiaolin Gao , Yong Li , Qiu Sha , Fuqiang Shi , John William Kesterson , Jiang Chen
发明人： Xiaolin Gao , Yong Li , Qiu Sha , Fuqiang Shi , John William Kesterson , Jiang Chen
IPC分类号： H02M3/335 , H02M1/32
CPC分类号： H02M1/32 , H02M3/33523
摘要： A controller integrated circuit (IC) for controlling a power converter uses one or more IC pins having plurality of functions such as configuration of a parameter supported by the controller IC and shutdown protection. Several different functions may be supported by a single IC pin, thereby reducing the number of pins required in the controller IC and also reducing the cost of manufacturing the controller IC. The controller IC may also share a comparison circuit among different pins and the different functions provided by those pins. Use of a shared comparison circuit further reduces the cost of manufacturing the controller IC without sacrificing the performance of the IC.
摘要翻译：用于控制功率转换器的控制器集成电路（IC）使用具有多个功能的一个或多个IC引脚，诸如由控制器IC支持的参数的配置和关断保护。单个IC引脚可以支持几个不同的功能，从而减少了控制器IC中所需的引脚数量，并且还降低了制造控制器IC的成本。控制器IC还可以在不同引脚之间共享比较电路以及由这些引脚提供的不同功能。使用共享比较电路进一步降低了制造控制器IC的成本，而不牺牲IC的性能。

10. 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。

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