公开(公告)号：US07782035B2

公开(公告)日：2010-08-24

申请号：US11935535

申请日：2007-11-06

申请人： Chun Cheung ,  Weihong Qiu ,  Robert Isham

发明人： Chun Cheung ,  Weihong Qiu ,  Robert Isham

IPC分类号： G05F1/40

CPC分类号： H02M3/1584 ,  H02M3/1588 ,  H02M2001/0032 ,  Y02B70/1466 ,  Y02B70/16

摘要： Pulse width modulation (PWM) controllers and output stage driver circuits and related methods of communicating switching regulator mode information. The controller includes circuitry that recognizes intervals when the load driven by the regulator is in a low power mode. Responsive to recognizing the low power mode, the controller generates a PWM mode signal having at least three (3) different levels including at least one intermediate level that is coupled to at least one driver. Based on the PWM mode signal, the regulator is switched into a power saving low power operational mode.

摘要翻译： 脉冲宽度调制（PWM）控制器和输出级驱动电路以及相关的交流调节器模式信息的方法。 控制器包括当由调节器驱动的负载处于低功率模式时识别间隔的电路。 响应于识别低功率模式，控制器产生具有至少三（3）个不同电平的PWM模式信号，包括耦合到至少一个驱动器的至少一个中间电平。 基于PWM模式信号，调节器切换到省电低功耗工作模式。

公开(公告)号：US20100079175A1

公开(公告)日：2010-04-01

申请号：US12429238

申请日：2009-04-24

申请人： Weihong Qiu ,  Chun Cheung ,  Emil Chen ,  Paul Sferrazza ,  Robert Isham

发明人： Weihong Qiu ,  Chun Cheung ,  Emil Chen ,  Paul Sferrazza ,  Robert Isham

IPC分类号： H03K3/00 ,  H03K5/04

CPC分类号： H02M3/1584

摘要： A phase doubler driver circuit includes a first input for receiving a input PWM drive signal. First control logic generates a first output PWM drive signal and a second output PWM drive signal responsive to the input PWM drive signal. In a first mode of operation, alternating pulses of the input PWM drive are output as the first output PWM drive signal and the second PWM output drive signal respectively. In a second mode of operation, the input PWM drive signal is provided as the first output PWM drive signal when a second phase current associated with the second output PWM drive signal exceeds a first phase current associated with the first output PWM drive signal and the input PWM drive signal is provided as the second output PWM drive signal when the phase current associated with the first output PWM signal exceed the phase current associated with the second output PWM signal. Second control logic adds an offset to a falling edge of the first output PWM drive signal responsive to a difference between a first current associated with the first phase current and an average current and for adding the offset to a falling edge of the second output PWM signal responsive to a difference between a second current associated with the second phase current and the average current, wherein the average current comprises the average of the first current and the second current. Drive circuitry generates drive signals responsive to each of the first output PWM drive signal and the second output PWM drive signal.

摘要翻译： 倍增器驱动器电路包括用于接收输入PWM驱动信号的第一输入端。 第一控制逻辑产生响应于输入PWM驱动信号的第一输出PWM驱动信号和第二输出PWM驱动信号。 在第一操作模式中，输入PWM驱动的交替脉冲分别作为第一输出PWM驱动信号和第二PWM输出驱动信号输出。 在第二操作模式中，当与第二输出PWM驱动信号相关联的第二相电流超过与第一输出PWM驱动信号和输入相关联的第一相电流时，输入PWM驱动信号被提供为第一输出PWM驱动信号 当与第一输出PWM信号相关联的相电流超过与第二输出PWM信号相关的相电流时，提供PWM驱动信号作为第二输出PWM驱动信号。 第二控制逻辑响应于与第一相电流相关联的第一电流与平均电流之间的差异，并且将偏移加到第二输出PWM信号的下降沿，将补偿添加到第一输出PWM驱动信号的下降沿 响应于与第二相电流相关联的第二电流与平均电流之间的差异，其中平均电流包括第一电流和第二电流的平均值。 驱动电路根据第一输出PWM驱动信号和第二输出PWM驱动信号中的每一个产生驱动信号。

公开(公告)号：US20080272752A1

公开(公告)日：2008-11-06

申请号：US11954888

申请日：2007-12-12

申请人： Weihong Qiu ,  Robert H. Isham ,  Chun Cheung

发明人： Weihong Qiu ,  Robert H. Isham ,  Chun Cheung

IPC分类号： G05F1/00

CPC分类号： H02M3/1584 ,  H02M2001/0032 ,  H02M2001/0041 ,  H02M2003/1586 ,  Y02B70/16

摘要： A multiphase regulator which includes an output node developing an output voltage, a feedback circuit determining error of the output voltage and providing a compensation signal indicative thereof, at least three phase circuits coupled in parallel to the output node, and an adaptive controller. Each phase circuit includes a modulation circuit and a switch circuit. Each modulation circuit receives the compensation signal and generates pulses on a corresponding one of the pulse modulation signals. Each switch circuit is coupled to the output node and is controlled by a corresponding pulse modulation signal. The adaptive controller is responsive to a load indication signal, such as indicating a low load condition, and drops operation of at least one of the phase circuits and adds at least one pulse to a pulse modulation signal of each remaining phase circuit.

摘要翻译： 多相调节器，其包括产生输出电压的输出节点，确定输出电压的误差的反馈电路，并提供指示其的补偿信号，与输出节点并联耦合的至少三相电路以及自适应控制器。 每相电路包括调制电路和开关电路。 每个调制电路接收补偿信号并在对应的一个脉冲调制信号上产生脉冲。 每个开关电路耦合到输出节点并由对应的脉冲调制信号控制。 自适应控制器响应诸如指示低负载状况的负载指示信号，并且降低至少一个相位电路的操作，并且将至少一个脉冲添加到每个剩余相位电路的脉冲调制信号。

公开(公告)号：US20060112787A1

公开(公告)日：2006-06-01

申请号：US11172687

申请日：2005-06-30

申请人： Chun Cheung

发明人： Chun Cheung

IPC分类号： B67B7/44 ,  B67B7/62 ,  B67B7/00

CPC分类号： B67B7/0441

摘要： A corkscrew comprising a body and a handle, the body including a socket adapted to receive the neck of a bottle sealed by a cork, an actuation lever, an axially rotatable worm spiral mounted on a carriage within the body and arranged to rotate and penetrate the cork as the lever is lowered, the spiral being further arranged to cease rotation as the lever is raised to withdraw the cork from the bottle, the corkscrew being further arranged to discharge the cork from the screw by lowering and raising the lever after the neck of the bottle has been removed from the socket.

摘要翻译： 包括主体和手柄的开瓶器，所述主体包括适于容纳由软木密封的瓶颈的致动杆，可旋转和穿透所述主体的手柄的可轴向旋转的蜗杆螺旋， 软木杆随着杠杆的下降而进一步布置成当杠杆升高以从瓶中取出软木时停止旋转，螺塞还进一步布置成通过在颈部之后降低和升高杆从螺钉排出软管 瓶子已从插座中取出。

公开(公告)号：US20050088156A1

公开(公告)日：2005-04-28

申请号：US10887610

申请日：2004-07-09

申请人： Chun Cheung ,  Matthew Harris

发明人： Chun Cheung ,  Matthew Harris

IPC分类号： G05F1/40 ,  H02M3/158

CPC分类号： H02M3/1584

摘要： A reduced pin count, dual channel driver interface is configured to interface a supervisory controller with a plurality of multi-phase output channel switching circuits of a multi-phase DC-DC regulator. Each dual channel driver is configured for placement relatively close to output channel sense points, so as to effectively reduce the distance that would otherwise have to be traversed by noise sensitive voltage signals. Sensed current representative signals are processed within the dual driver for current balance between a respective multi driver pair, and are combined to supply the controller with the average current signal of the dual channels. The controller uses this average current-information to adjust respective pulse width modulation signals that are supplied to the dual channel drivers.

摘要翻译： 减少引脚数，双通道驱动器接口被配置为将监控器与多相DC-DC调节器的多个多相输出通道切换电路接口。 每个双通道驱动器配置为相对靠近输出通道检测点进行放置，以便有效地减少噪声敏感电压信号否则必须穿过的距离。 感测的电流代表信号在双驱动器内处理，用于在相应的多驱动器对之间的电流平衡，并被组合以向控制器提供双通道的平均电流信号。 控制器使用该平均电流信息来调整提供给双通道驱动器的各个脉冲宽度调制信号。

公开(公告)号：US08339173B2

公开(公告)日：2012-12-25

申请号：US13044251

申请日：2011-03-09

申请人： Gustavo James Mehas ,  Chun Cheung ,  Brandon D. Day

发明人： Gustavo James Mehas ,  Chun Cheung ,  Brandon D. Day

IPC分类号： H03K3/00

CPC分类号： H02M3/1588 ,  H02M2001/0012 ,  H02M2001/0038 ,  Y02B70/1466

摘要： An apparatus for providing programmable hysteresis control using an enable pin of a device is disclosed. An enable pin is configured to receive an input signal to enable and disable an associated device responsive to the input signal. A current sink is attached to the enable pin and is responsive to circuitry that disables the current sink responsive to application of the input signal at a first voltage level and enables the current sink responsive to application of the input signal at a second voltage level.

摘要翻译： 公开了一种使用设备的使能引脚提供可编程滞回控制的装置。 启用引脚被配置为接收输入信号以响应于输入信号来启用和禁用相关联的设备。 电流吸收器连接到使能引脚，并且响应于电路，其响应于在第一电压电平处施加输入信号而禁用电流宿，并且能够使电流宿响应于第二电压电平上的输入信号的应用。

公开(公告)号：US08085017B2

公开(公告)日：2011-12-27

申请号：US12873102

申请日：2010-08-31

申请人： Weihong Qiu ,  Robert H. Isham ,  Chun Cheung

发明人： Weihong Qiu ,  Robert H. Isham ,  Chun Cheung

IPC分类号： G05F1/595

CPC分类号： H02M3/1584 ,  H02M2001/0032 ,  H02M2001/0041 ,  H02M2003/1586 ,  Y02B70/16

摘要： A pulse control system for a multiphase regulator including an error amplifier, a multiphase generator, and an adaptive controller. The error amplifier provides an error signal indicative of output voltage error. The multiphase generator develops modulation pulses for phases based on the error signal. The adaptive controller is responsive to a load indication signal and redirects at least one modulation pulse from a first of phase to a second phase. The load indication signal may be received from a microprocessor indicating a low power mode. The adaptive controller provides a smooth and efficient transition to low load conditions by dropping operation of one or more phases and redirecting modulation pulses to the remaining one or more phases, and reduced phases improve power efficiency for the low load conditions.

摘要翻译： 一种用于多相调节器的脉冲控制系统，包括误差放大器，多相发生器和自适应控制器。 误差放大器提供指示输出电压误差的误差信号。 多相发生器根据误差信号产生相位调制脉冲。 自适应控制器响应于负载指示信号并将至少一个调制脉冲从第一相重定向到第二相。 可以从指示低功率模式的微处理器接收负载指示信号。 自适应控制器通过丢弃一个或多个相的操作并将调制脉冲重定向到剩余的一个或多个相位来提供对低负载条件的平滑和有效的转换，并且降低的相位提高了低负载条件下的功率效率。

公开(公告)号：US20100320977A1

公开(公告)日：2010-12-23

申请号：US12873102

申请日：2010-08-31

申请人： Weihong Qiu ,  Robert H. Isham ,  Chun Cheung

发明人： Weihong Qiu ,  Robert H. Isham ,  Chun Cheung

IPC分类号： G05F1/00

CPC分类号： H02M3/1584 ,  H02M2001/0032 ,  H02M2001/0041 ,  H02M2003/1586 ,  Y02B70/16

摘要： A pulse control system for a multiphase regulator including an error amplifier, a multiphase generator, and an adaptive controller. The error amplifier provides an error signal indicative of output voltage error. The multiphase generator develops modulation pulses for phases based on the error signal. The adaptive controller is responsive to a load indication signal and redirects at least one modulation pulse from a first of phase to a second phase. The load indication signal may be received from a microprocessor indicating a low power mode. The adaptive controller provides a smooth and efficient transition to low load conditions by dropping operation of one or more phases and redirecting modulation pulses to the remaining one or more phases, and reduced phases improve power efficiency for the low load conditions.

摘要翻译： 一种用于多相调节器的脉冲控制系统，包括误差放大器，多相发生器和自适应控制器。 误差放大器提供指示输出电压误差的误差信号。 多相发生器根据误差信号产生相位调制脉冲。 自适应控制器响应于负载指示信号并将至少一个调制脉冲从第一相重定向到第二相。 可以从指示低功率模式的微处理器接收负载指示信号。 自适应控制器通过丢弃一个或多个相的操作并将调制脉冲重定向到剩余的一个或多个相位来提供对低负载条件的平滑和有效的转换，并且降低的相位提高了低负载条件下的功率效率。

公开(公告)号：US07812581B2

公开(公告)日：2010-10-12

申请号：US11954888

申请日：2007-12-12

申请人： Weihong Qiu ,  Robert H. Isham ,  Chun Cheung

发明人： Weihong Qiu ,  Robert H. Isham ,  Chun Cheung

IPC分类号： G05F1/595

CPC分类号： H02M3/1584 ,  H02M2001/0032 ,  H02M2001/0041 ,  H02M2003/1586 ,  Y02B70/16

摘要： A multiphase regulator which includes an output node developing an output voltage, a feedback circuit determining error of the output voltage and providing a compensation signal indicative thereof, at least three phase circuits coupled in parallel to the output node, and an adaptive controller. Each phase circuit includes a modulation circuit and a switch circuit. Each modulation circuit receives the compensation signal and generates pulses on a corresponding one of the pulse modulation signals. Each switch circuit is coupled to the output node and is controlled by a corresponding pulse modulation signal. The adaptive controller is responsive to a load indication signal, such as indicating a low load condition, and drops operation of at least one of the phase circuits and adds at least one pulse to a pulse modulation signal of each remaining phase circuit.

摘要翻译： 多相调节器，其包括产生输出电压的输出节点，确定输出电压的误差的反馈电路，并提供指示其的补偿信号，与输出节点并联耦合的至少三相电路以及自适应控制器。 每相电路包括调制电路和开关电路。 每个调制电路接收补偿信号并在对应的一个脉冲调制信号上产生脉冲。 每个开关电路耦合到输出节点并由对应的脉冲调制信号控制。 自适应控制器响应诸如指示低负载状况的负载指示信号，并且降低至少一个相位电路的操作，并且将至少一个脉冲添加到每个剩余相位电路的脉冲调制信号。

公开(公告)号：US07732941B2

公开(公告)日：2010-06-08

申请号：US11775306

申请日：2007-07-10

申请人： Chun Cheung ,  Stan Wietecha

发明人： Chun Cheung ,  Stan Wietecha

IPC分类号： H02J3/14

CPC分类号： H02J1/14 ,  Y10T307/414

摘要： A circuit provides multi-module current sharing for circuit modules. The circuit includes an error amplifier having a negative and a positive input and an output. The positive input of the error amplifier is connected to a reference voltage. A buffered differential amplifier has an output connected to the negative input of the error amplifier and a positive and a negative input. A correction current is sourced to the negative input of the buffered differential amplifier. A resistor connected to the negative input of the buffered differential amplifier has a value that controls the amount of current correction applied to the negative input of the buffer differential amplifier by the current correction source.

摘要翻译： 电路为电路模块提供多模块电流共享。 该电路包括具有负和正输入和输出的误差放大器。 误差放大器的正输入端连接到参考电压。 缓冲差分放大器具有连接到误差放大器的负输入的输出端和正输入端和负输入端。 校正电流来源于缓冲差分放大器的负输入。 连接到缓冲差分放大器的负输入的电阻器具有控制由当前校正源施加到缓冲差分放大器的负输入端的电流校正量的值。