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    Hybrid adaptive power factor correction schemes for switching power converters
    2.
    发明授权
    Hybrid adaptive power factor correction schemes for switching power converters 有权
    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。

    Adaptively controlled soft start-up scheme for switching power converters
    3.
    发明授权
    Adaptively controlled soft start-up scheme for switching power converters 有权
    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。

    ADAPTIVELY CONTROLLED SOFT START-UP SCHEME FOR SWITCHING POWER CONVERTERS
    4.
    发明申请
    ADAPTIVELY CONTROLLED SOFT START-UP SCHEME FOR SWITCHING POWER CONVERTERS 有权
    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。

    Power Converter Controller IC Having Pins with Multiple Functions
    5.
    发明申请
    Power Converter Controller IC Having Pins with Multiple Functions 有权
    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。

    Power converter controller IC having pins with multiple functions
    6.
    发明授权
    Power converter controller IC having pins with multiple functions 有权
    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。

    VALLEY-MODE SWITCHING SCHEMES FOR SWITCHING POWER CONVERTERS
    8.
    发明申请
    VALLEY-MODE SWITCHING SCHEMES FOR SWITCHING POWER CONVERTERS 有权
    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。

    Valley-mode switching schemes for switching power converters
    10.
    发明授权
    Valley-mode switching schemes for switching power converters 有权
    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。