公开(公告)号：US09112498B2

公开(公告)日：2015-08-18

申请号：US13568976

申请日：2012-08-07

申请人： Yong Li ,  Fuqiang Shi ,  Andrew Kwok-Cheung Lee ,  David Nguyen ,  Jiang Chen

发明人： Yong Li ,  Fuqiang Shi ,  Andrew Kwok-Cheung Lee ,  David Nguyen ,  Jiang Chen

IPC分类号： H02M3/335 ,  H02M1/08 ,  H03K17/16

CPC分类号： H03K17/166 ,  H02M1/08 ,  H02M3/335 ,  H02M3/33523 ,  H03K17/163

摘要： The embodiments herein describe a dynamic metal-oxide-semiconductor field-effect transistor (MOSFET) gate driver system architecture and control scheme. The MOSFET gate driver system dynamically adjusts both the gate driver turn-on-resistance and the gate driver turn-off resistance within a single (i.e., one) switching cycle to reduce electromagnetic interference (EMI) in the system and to minimize the conduction loss of a power MOSFET during operation.

摘要翻译： 本文的实施例描述了动态金属氧化物半导体场效应晶体管（MOSFET）栅极驱动器系统架构和控制方案。 MOSFET栅极驱动器系统在单个（即一个）开关周期内动态地调节栅极驱动器导通电阻和栅极驱动器关断电阻，以减少系统中的电磁干扰（EMI）并使传导损耗最小化 的功率MOSFET。

公开(公告)号：US20130107584A1

公开(公告)日：2013-05-02

申请号：US13568976

申请日：2012-08-07

申请人： Yong Li ,  Fuqiang Shi ,  Andrew Kwok-Cheung Lee ,  David Nguyen ,  Jiang Chen

发明人： Yong Li ,  Fuqiang Shi ,  Andrew Kwok-Cheung Lee ,  David Nguyen ,  Jiang Chen

IPC分类号： H02M3/335

CPC分类号： H03K17/166 ,  H02M1/08 ,  H02M3/335 ,  H02M3/33523 ,  H03K17/163

摘要： The embodiments herein describe a dynamic metal-oxide-semiconductor field-effect transistor (MOSFET) gate driver system architecture and control scheme. The MOSFET gate driver system dynamically adjusts both the gate driver turn-on-resistance and the gate driver turn-off resistance within a single (i.e., one) switching cycle to reduce electromagnetic interference (EMI) in the system and to minimize the conduction loss of a power MOSFET during operation.

摘要翻译： 本文的实施例描述了动态金属氧化物半导体场效应晶体管（MOSFET）栅极驱动器系统架构和控制方案。 MOSFET栅极驱动器系统在单个（即一个）开关周期内动态地调节栅极驱动器导通电阻和栅极驱动器关断电阻，以减少系统中的电磁干扰（EMI）并使传导损耗最小化 的功率MOSFET。

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。

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。

公开(公告)号：US20120176820A1

公开(公告)日：2012-07-12

申请号：US13086290

申请日：2011-04-13

申请人： Yong Li ,  Fuqiang Shi ,  Xiaolin Gao ,  David Nguyen

发明人： Yong Li ,  Fuqiang Shi ,  Xiaolin Gao ,  David Nguyen

IPC分类号： H02M3/335

CPC分类号： H02M3/33507 ,  H02M2001/0035 ,  Y02B70/16

摘要： A switch controller is disclosed that adaptively controls the operating frequency of a switching power converter in order to improve one-time load response and repetitive dynamic load responses. During a transition from a high load to low load condition, the switch controller clamps the operating frequency of the switching power converter at an intermediate frequency for a period of time before allowing the operating frequency to return to a frequency associated with the low load condition. The clamped frequency is higher than the frequency associated with the low load condition thereby allowing improved response to a subsequent load change to a high load condition. Thus, the system improves dynamic load response without compromising no-load power consumption.

摘要翻译： 公开了一种开关控制器，其自适应地控制开关功率转换器的工作频率，以便改善一次负载响应和重复的动态负载响应。 在从高负载到低负载状态的转变期间，开关控制器将开关功率转换器的工作频率在中间频率之前的一段时间内进行钳位，然后允许工作频率返回到与低负载状态相关联的频率。 钳位频率高于与低负载条件相关的频率，从而允许改进对后续负载变化对高负载状态的响应。 因此，该系统可以改善动态负载响应，而不会影响空载功耗。

公开(公告)号：US08259472B2

公开(公告)日：2012-09-04

申请号：US13086290

申请日：2011-04-13

申请人： Yong Li ,  Fuqiang Shi ,  Xiaolin Gao ,  David Nguyen

发明人： Yong Li ,  Fuqiang Shi ,  Xiaolin Gao ,  David Nguyen

IPC分类号： H02M3/335 ,  H02M3/338

CPC分类号： H02M3/33507 ,  H02M2001/0035 ,  Y02B70/16

摘要： A switch controller is disclosed that adaptively controls the operating frequency of a switching power converter in order to improve one-time load response and repetitive dynamic load responses. During a transition from a high load to low load condition, the switch controller clamps the operating frequency of the switching power converter at an intermediate frequency for a period of time before allowing the operating frequency to return to a frequency associated with the low load condition. The clamped frequency is higher than the frequency associated with the low load condition thereby allowing improved response to a subsequent load change to a high load condition. Thus, the system improves dynamic load response without compromising no-load power consumption.

摘要翻译： 公开了一种开关控制器，其自适应地控制开关功率转换器的工作频率，以便改善一次负载响应和重复的动态负载响应。 在从高负载到低负载状态的转变期间，开关控制器将开关功率转换器的工作频率在中间频率之前的一段时间内进行钳位，然后允许工作频率返回到与低负载状态相关联的频率。 钳位频率高于与低负载条件相关的频率，从而允许改进对后续负载变化对高负载状态的响应。 因此，该系统可以改善动态负载响应，而不会影响空载功耗。

公开(公告)号：US20100164455A1

公开(公告)日：2010-07-01

申请号：US12608854

申请日：2009-10-29

申请人： Yong Li ,  Carrie Seim ,  Junjie Zheng ,  John W. Kesterson ,  Liang Yan ,  Clarita Poon ,  Fuqiang Shi

发明人： Yong Li ,  Carrie Seim ,  Junjie Zheng ,  John W. Kesterson ,  Liang Yan ,  Clarita Poon ,  Fuqiang Shi

IPC分类号： G05F1/10

CPC分类号： H02M3/157 ,  H02M2001/0032 ,  Y02B70/16

摘要： Adaptive multi-mode digital control schemes that improve the light-load efficiency (and thus the overall average efficiency) in switch-mode power converters without causing performance issues such as audible noises or excessive voltage ripples. Embodiments include a switch-mode power converter that reduces current in the power converter using a second pulse-width-modulation (PWM) mode before reaching switching frequencies that generate audible noises. As the load across the output of the power converter is reduced, the power converter transitions from a first PWM mode in high load conditions to a first pulse-frequency-modulation (PFM) mode, then to a second PWM mode, and finally to a second PFM mode. During the second PFM mode, the switching frequency is dropped to audible frequency levels. Current in the power converter, however, is reduced in the second PWM mode before transitioning to the second PFM mode. Therefore, the power converter produces less or no audible noise in light load conditions where the switching frequency drops to audible frequency levels, while achieving high efficiency across varying load conditions.

摘要翻译： 自适应多模数字控制方案，可以提高开关模式电源转换器的轻负载效率（从而提高整体平均效率），而不会引起诸如声音噪声或电压波动过大等性能问题。 实施例包括开关模式功率转换器，其在达到产生可听见噪声的开关频率之前，使用第二脉冲宽度调制（PWM）模式减小功率转换器中的电流。 随着功率转换器输出端的负载减小，功率转换器从高负载条件下的第一个PWM模式转换到第一个脉冲频率调制（PFM）模式，然后转换到第二个PWM模式，最后到 第二PFM模式。 在第二个PFM模式下，开关频率下降到可听频率水平。 然而，在转换到第二PFM模式之前，功率转换器中的电流在第二PWM模式中减小。 因此，功率转换器在轻负载条件下产生较少或没有可听见的噪声，其中开关频率下降到可听频率水平，同时在不同的负载条件下实现高效率。

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。

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。

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。