公开(公告)号：US07215102B2

公开(公告)日：2007-05-08

申请号：US11185353

申请日：2005-07-20

申请人： Matthew B. Harris ,  Weihong Qiu

发明人： Matthew B. Harris ,  Weihong Qiu

IPC分类号： G05F1/40

CPC分类号： H02M3/1584 ,  H02M2001/0048 ,  Y02B70/1491

摘要： A semi-clockless, cascaded, current-mode regulator has a first regulator that receives a clock signal from a controller. By ‘semi-clockless’ is meant that a clock signal is applied to the first of a cascaded plurality of regulators, and that as a result of the cascading of clock delay circuits in each of the regulators, the remaining regulators receive sequentially delayed versions of the clock signal applied to the first regulator. The regulators are coupled to control the operations of associated pulse width modulation controlled switching circuits. Outputs of the switching circuits are combined to realize a multi-phase output voltage.

摘要翻译： 半无时钟级联电流模式调节器具有从控制器接收时钟信号的第一调节器。 “半无时钟”是指时钟信号被施加到级联的多个调节器中的第一个，并且由于每个调节器中的时钟延迟电路的级联，其余调节器接收顺序延迟的 时钟信号施加到第一调节器。 耦合调节器以控制相关的脉宽调制控制开关电路的操作。 组合开关电路的输出以实现多相输出电压。

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。

公开(公告)号：US08373400B2

公开(公告)日：2013-02-12

申请号：US12876299

申请日：2010-09-07

申请人： Weihong Qiu ,  Jun Liu ,  Shangyang Xiao

发明人： Weihong Qiu ,  Jun Liu ,  Shangyang Xiao

IPC分类号： G05F1/56 ,  G05F1/569 ,  G05F1/575

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

摘要： A system, voltage supply circuit, control unit for a voltage supply circuit, and method of controlling a voltage supply circuit are disclosed. For example, a system is disclosed that comprises at least one electronic circuit and a voltage supply unit coupled to an input of the at least one electronic circuit. The voltage supply unit includes a power unit to supply a voltage to the at least one electronic circuit and a control unit to control an operating mode of the power unit, an output of the control unit coupled to an input of the power unit. The control unit includes a mode selector to select the operating mode of the power unit, coupled to at least a first output of the power unit, an amplifier coupled to the at least a first output of the power unit, a compensation circuit, and a first switching unit coupled to the mode selector and the compensation circuit, to couple the compensation circuit to the amplifier if a selected operating mode of the power unit is a first mode.

摘要翻译： 公开了一种系统，电压供应电路，用于电压供应电路的控制单元和控制电压供应电路的方法。 例如，公开了一种包括至少一个电子电路和耦合到至少一个电子电路的输入的电压供应单元的系统。 电压提供单元包括向至少一个电子电路提供电压的电源单元和用于控制功率单元的操作模式的控制单元，耦合到功率单元的输入的控制单元的输出。 控制单元包括模式选择器，用于选择耦合到功率单元的至少第一输出的功率单元的工作模式，耦合到功率单元的至少第一输出的放大器，补偿电路和 耦合到模式选择器和补偿电路的第一开关单元，如果功率单元的所选择的操作模式是第一模式，则将补偿电路耦合到放大器。

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：US07800352B2

公开(公告)日：2010-09-21

申请号：US11879074

申请日：2007-07-16

申请人： Weihong Qiu ,  Robert Isham

发明人： Weihong Qiu ,  Robert Isham

IPC分类号： G05F1/575

CPC分类号： H02M3/156

摘要： A modulation controller includes an error amplifier which receives a reference voltage and an output voltage (VOUT) from a switching regulator being controlled by the controller at its inputs and provides a VCOMP signal at its output, and at least one comparator, wherein a first input of the comparator is coupled to an output of the error amplifier and a second input coupled to receive a ramp signal. A VCOMP shift cancellation circuit is interposed between the first or second input of the comparator, wherein the VCOMP shift cancellation circuit improves diode conduction mode performance (DCM) of the regulator by reducing a variation in average VCOMP.

摘要翻译： 调制控制器包括误差放大器，其接收来自开关调节器的参考电压和输出电压（VOUT），所述开关调节器在其输入处由控制器控制并在其输出端提供VCOMP信号，以及至少一个比较器，其中第一输入 所述比较器耦合到所述误差放大器的输出端，以及耦合以接收斜坡信号的第二输入端。 在比较器的第一或第二输入端之间插入VCOMP移位消除电路，其中VCOMP移位消除电路通过减小VCOMP的平均值的变化来提高调节器的二极管导通模式性能（DCM）。

公开(公告)号：US06636430B1

公开(公告)日：2003-10-21

申请号：US10207300

申请日：2002-07-29

申请人： Issa Batarseh ,  Wenkai Wu ,  Weihong Qiu ,  Wei Gu

发明人： Issa Batarseh ,  Wenkai Wu ,  Weihong Qiu ,  Wei Gu

IPC分类号： H02M3335

CPC分类号： H02M1/4258 ,  Y02B70/126 ,  Y02P80/112

摘要： A new innovative concept in AC/DC cell that transfers energy to the output side directly from the input line, rather than from the storage capacitor in power factor correction (PFC) cell during the period that the line voltage exceeds a preset value. The new concept is based on providing additional winding coupled to the DC/DC transformer connected to the rectified input side to provide a path for the energy transfer from the line to transfer to the output directly (Boost cell) or to be stored in the output transformer (Flyback cell).

摘要翻译： 在线路电压超过预设值的时期内，AC / DC电池的新创新理念将能量直接从输入线路传输到输出侧，而不是功率因数校正（PFC）单元中的存储电容器。 新概念基于提供额外的绕组，其连接到连接到整流输入侧的DC / DC变压器，以提供用于从线路直接传输到输出（Boost cell）的能量传输或存储在输出端的路径 变压器（反激电池）。

公开(公告)号：US08704500B2

公开(公告)日：2014-04-22

申请号：US12189112

申请日：2008-08-08

申请人： Shangyang Xiao ,  Weihong Qiu ,  Jun Liu

发明人： Shangyang Xiao ,  Weihong Qiu ,  Jun Liu

IPC分类号： G05F1/00

CPC分类号： H02M3/1584 ,  H02M2001/0009

摘要： An embodiment of a power supply includes a supply output node, phase paths, and sensor circuits. The supply output node is operable to carry a regulated output voltage, and each phase path has a respective phase-path non-output node, has a respective phase-path output node coupled to the supply output node, and is operable to carry a respective phase current. And each sensor circuit has a respective sensor node coupled to the phase-path non-output nodes and is operable to generate a respective sense signal that represents the phase current flowing through a respective one of the phase paths. For example, where the phase paths are magnetically coupled to one another, the sensor circuits take into account the portions of the phase currents induced by the magnetic couplings to generate sense signals that more accurately represent the phase currents as compared to conventional sensor circuits.

摘要翻译： 电源的实施例包括电源输出节点，相位路径和传感器电路。 电源输出节点可操作以承载稳定的输出电压，并且每个相位路径具有相应的相位路径非输出节点，具有耦合到电源输出节点的相应的相位路径输出节点，并且可操作以携带相应的 相电流。 并且每个传感器电路具有耦合到相位路径非输出节点的相应传感器节点，并且可操作以产生表示流过相应一个相位路径的相电流的相应感测信号。 例如，当相位路径彼此磁耦合时，传感器电路考虑到由磁耦合引起的相电流的部分，以产生与常规传感器电路相比更精确地表示相电流的感测信号。

公开(公告)号：US08368368B2

公开(公告)日：2013-02-05

申请号：US12329147

申请日：2008-12-05

申请人： Weihong Qiu ,  Chris T. Burket ,  Gustavo James Mehas

发明人： Weihong Qiu ,  Chris T. Burket ,  Gustavo James Mehas

IPC分类号： G05F1/40

CPC分类号： H02M3/156 ,  H02M2001/0009

摘要： The DC/DC voltage converter comprises at least one switching transistor. An inductor is connected to the at least one switching transistor. A pulse width modulation circuit generates control signals to at least one switching transistor responsive to a current control signal. A current sensor connected in parallel with the inductor senses current passing through the inductor. The sensor comprises a resistor and an NTC capacitor connected in series with the resistor. Circuitry for monitoring the voltage across the NTC capacitor generates the current control signal responsive to the monitored voltage.

摘要翻译： DC / DC电压转换器包括至少一个开关晶体管。 电感器连接到至少一个开关晶体管。 脉冲宽度调制电路根据电流控制信号向至少一个开关晶体管产生控制信号。 与电感器并联连接的电流传感器感测通过电感器的电流。 传感器包括与电阻器串联连接的电阻器和NTC电容器。 用于监测NTC电容器两端的电压的电路根据监测的电压产生电流控制信号。

公开(公告)号：US20120268063A1

公开(公告)日：2012-10-25

申请号：US13456187

申请日：2012-04-25

申请人： Weihong Qiu ,  Xiaozhou Zhou ,  Jun Liu ,  Bertram J. Rodgers, III

发明人： Weihong Qiu ,  Xiaozhou Zhou ,  Jun Liu ,  Bertram J. Rodgers, III

IPC分类号： H02J7/00 ,  H02M7/04

CPC分类号： H02J7/022 ,  H02J7/045

摘要： An embodiment of a charger may include an input, at least one switch having a first node coupled to a reference voltage, a current sensor coupled between the input and a second node of the at least one switch, an output coupled to a third node of the at least one switch, and a charge controller coupled to the input to determine an input voltage, to the current sensor to determine an input current and to control inputs of the at least one switch. The at least one switch may be responsive to control signals supplied by the charge controller to the control inputs thereof to control voltage and current at the output of the charger. The charge controller may be responsive to the input voltage and the input current to produce the control signals in a manner that maximizes electrical power drawn at the input.