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：US20110133716A1

公开(公告)日：2011-06-09

申请号：US13025453

申请日：2011-02-11

申请人： Chun Cheung ,  Weihong Qiu ,  Robert Isham

发明人： Chun Cheung ,  Weihong Qiu ,  Robert Isham

IPC分类号： G05F1/618

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：US20100283523A1

公开(公告)日：2010-11-11

申请号：US12840466

申请日：2010-07-21

申请人： Chun Cheung ,  Weihong Qiu ,  Robert Isham

发明人： Chun Cheung ,  Weihong Qiu ,  Robert Isham

IPC分类号： H03K5/02

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：US20080238392A1

公开(公告)日：2008-10-02

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： G05F1/10 ,  G05F1/00

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：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：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：US08558523B2

公开(公告)日：2013-10-15

申请号：US13047378

申请日：2011-03-14

申请人： Weihong Qiu ,  Chun Cheung ,  Faisal Ahmad

发明人： Weihong Qiu ,  Chun Cheung ,  Faisal Ahmad

IPC分类号： G05F1/565 ,  G05F1/59

CPC分类号： H02M3/1584

摘要： A method of operating a regulator controller IC for performing intermittent diode braking for controlling a multiple phase voltage regulator. The method includes receiving at least one signal for detecting repetitive load transients, determining a rate of the repetitive load transients, generating diode braking control signals, each for applying diode braking to a corresponding one of multiple phases for at least one load transient when the repetitive load transients are below a first rate, and controlling the diode braking control signals to drop application of diode braking of at least one phase for at least one load transient when the repetitive load transients are at least the first rate. The method may include rotating the application of diode braking among the phases during successive applications of diode braking. The method may include dropping an increased number of phases for diode braking as the rate of repetitive load transients is increased.

摘要翻译： 一种用于执行用于控制多相电压调节器的间歇二极管制动的调节器控制器IC的方法。 该方法包括接收至少一个用于检测重复负载瞬变的信号，确定重复负载瞬变的速率，产生二极管制动控制信号，每个用于将二极管制动施加到至少一个负载瞬变的相应的一个相， 当重复负载瞬变至少为第一速率时，负载瞬变低于第一速率，并且控制二极管制动控制信号以降低至少一个相位的二极管制动的至少一个负载瞬变的应用。 该方法可以包括在二极管制动的连续应用期间在相间旋转二极管制动的应用。 该方法可以包括当重复负载瞬变的速率增加时，减少用于二极管制动的增加的相位数。