公开(公告)号：US20080197824A1

公开(公告)日：2008-08-21

申请号：US11694308

申请日：2007-03-30

申请人： Weihong Qiu ,  Shangyang Xiao ,  Robert H. Isham

发明人： Weihong Qiu ,  Shangyang Xiao ,  Robert H. Isham

IPC分类号： G05F1/00

CPC分类号： H02M3/1584 ,  H02M3/285

摘要： A pulse width modulation (PWM) modulator for a multiphase power converter and related adaptive firing order (AFO) method includes a multiphase leading edge generator having pulse generating circuitry associated with each of the regulator phases, wherein the pulse generating circuitry generates phase pulses associated with each of the phases. An adaptive firing order (AFO) controller having circuitry including a mixer receives and sums the phase pulses into a summing signal and uses the summing signal to generate a series of turn-on pulses therefrom. A multiphase PWM generator has inputs coupled to an output of the AFO controller coupled to receive the series of turn-on pulses, the multiphase PWM generator having circuitry for generating said PWM signals therefrom. An adaptive firing order (AFO) controlled multi-phase power converter includes a plurality of parallel connected regulator phases controlled by respective pulse width modulation (PWM) signals provided by the PWM modulator.

摘要翻译： 用于多相功率转换器的脉宽调制（PWM）调制器和相关的自适应点火顺序（AFO）方法包括具有与每个调节器相位相关联的脉冲发生电路的多相前沿发生器，其中脉冲发生电路产生与 每个阶段。 具有包括混合器的电路的自适应点火顺序（AFO）控制器接收并将相位脉冲求和到求和信号中，并且使用求和信号从其产生一系列导通脉冲。 多相PWM发生器具有耦合到耦合以接收一系列导通脉冲的AFO控制器的输出的输入，所述多相PWM发生器具有用于从其产生所述PWM信号的电路。 自适应点火顺序（AFO）控制的多相功率转换器包括由PWM调制器提供的相应的脉冲宽度调制（PWM）信号控制的多个并联的调节器相位。

公开(公告)号：US20110062926A1

公开(公告)日：2011-03-17

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： G05F1/10

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：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：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：US07592787B2

公开(公告)日：2009-09-22

申请号：US11694308

申请日：2007-03-30

申请人： Weihong Qui ,  Shangyang Xiao ,  Robert H. Isham

发明人： Weihong Qui ,  Shangyang Xiao ,  Robert H. Isham

IPC分类号： G05F1/59 ,  G05F1/565

CPC分类号： H02M3/1584 ,  H02M3/285

摘要： A pulse width modulation (PWM) modulator for a multiphase power converter and related adaptive firing order (AFO) method includes a multiphase leading edge generator having pulse generating circuitry associated with each of the regulator phases, wherein the pulse generating circuitry generates phase pulses associated with each of the phases. An adaptive firing order (AFO) controller having circuitry including a mixer receives and sums the phase pulses into a summing signal and uses the summing signal to generate a series of turn-on pulses therefrom. A multiphase PWM generator has inputs coupled to an output of the AFO controller coupled to receive the series of turn-on pulses, the multiphase PWM generator having circuitry for generating said PWM signals therefrom. An adaptive firing order (AFO) controlled multi-phase power converter includes a plurality of parallel connected regulator phases controlled by respective pulse width modulation (PWM) signals provided by the PWM modulator.

摘要翻译： 用于多相功率转换器的脉宽调制（PWM）调制器和相关的自适应点火顺序（AFO）方法包括具有与每个调节器相位相关联的脉冲发生电路的多相前沿发生器，其中脉冲发生电路产生与 每个阶段。 具有包括混合器的电路的自适应点火顺序（AFO）控制器接收并将相位脉冲求和到求和信号中，并且使用求和信号从其产生一系列导通脉冲。 多相PWM发生器具有耦合到耦合以接收一系列导通脉冲的AFO控制器的输出的输入，所述多相PWM发生器具有用于从其产生所述PWM信号的电路。 自适应点火顺序（AFO）控制的多相功率转换器包括由PWM调制器提供的相应的脉冲宽度调制（PWM）信号控制的多个并联的调节器相位。

公开(公告)号：US08575908B2

公开(公告)日：2013-11-05

申请号：US12539035

申请日：2009-08-11

申请人： Weihong Qiu ,  Shangyang Xiao ,  Nattorn Pongratanankul

发明人： Weihong Qiu ,  Shangyang Xiao ,  Nattorn Pongratanankul

IPC分类号： G05F1/10

CPC分类号： H02M3/156 ,  H02M2001/0025

摘要： A voltage regulation circuit includes a power stage for generating a regulated output voltage responsive to an input voltage and at least one PWM signal. A voltage divider circuit is connected to the output of the power stage and generates a feedback voltage. First circuitry generates the at least one PWM signal responsive to a voltage error signal, a filtered output voltage signal and a ramp voltage signal. The filtered output voltage is used for substantially removing loop gain change caused by the voltage divider circuit. A voltage compensation circuit generates the voltage error signal responsive to a feedback voltage and a reference voltage.

摘要翻译： 电压调节电路包括用于响应于输入电压和至少一个PWM信号产生调节的输出电压的功率级。 分压器电路连接到功率级的输出端并产生反馈电压。 第一电路响应于电压误差信号，滤波后的输出电压信号和斜坡电压信号，产生至少一个PWM信号。 滤波后的输出电压用于基本上消除由分压电路引起的环路增益变化。 电压补偿电路根据反馈电压和参考电压产生电压误差信号。

公开(公告)号：US20080180076A1

公开(公告)日：2008-07-31

申请号：US12006703

申请日：2008-01-04

申请人： Weihong Qiu ,  Shangyang Xiao ,  Jun Liu

发明人： Weihong Qiu ,  Shangyang Xiao ,  Jun Liu

IPC分类号： G06F1/10 ,  H01F17/00

CPC分类号： G06F1/26 ,  H01F3/14 ,  H01F17/04 ,  H02M3/1584

摘要： A method includes simultaneously driving a load via first and second magnetically coupled regulator phases for a first duration, uncoupling one of the phases from the load after the first duration, and, after uncoupling the one phase from the load, allowing a current through the one phase to decay. For example, such a method allows energy stored in the uncoupled phase to be recaptured to the output transient response of a power supply.

摘要翻译： 一种方法包括通过第一和第二磁耦合调节器相位同时驱动负载第一持续时间，在第一持续时间之后从负载中解耦耦合相中的一个，并且在将一个相与负载分离后，允许电流通过一个 相衰变。 例如，这种方法允许存储在非耦合相中的能量被重新捕获到电源的输出瞬态响应。

公开(公告)号：US08072200B1

公开(公告)日：2011-12-06

申请号：US12339500

申请日：2008-12-19

申请人： Weihong Qiu ,  Shangyang Xiao ,  Kun Xing

发明人： Weihong Qiu ,  Shangyang Xiao ,  Kun Xing

IPC分类号： G05F1/40

CPC分类号： H02M3/1584 ,  G01R1/203 ,  G01R19/0092 ,  H02M2001/0009 ,  Y10S323/907

摘要： A current sensing circuit with AC and DC temperature compensation for sensing current through an output inductor which has an inherent DC resistor with a temperature varying resistance. A first RC circuit is coupled across the output inductor and has a time constant. The first amplifier provides a sense signal indicative of voltage of the first RC circuit. The second RC circuit is coupled to a first correction node and receives the sense signal. The second resistor has a temperature varying resistance so that the second RC circuit has a time constant commensurate with a time constant of the output inductor. The third RC circuit is coupled to a second correction node and has a time constant equal commensurate with the first RC circuit. The second amplifier provides a corrected sense signal based on the correction nodes.

摘要翻译： 具有AC和DC温度补偿的电流感测电路，用于感测通过输出电感器的电流，该输出电感器具有具有耐温度变化电阻的固有直流电阻器。 第一个RC电路耦合在输出电感上，具有时间常数。 第一放大器提供表示第一RC电路的电压的感测信号。 第二RC电路耦合到第一校正节点并接收感测信号。 第二电阻器具有温度变化电阻，使得第二RC电路具有与输出电感器的时间常数相当的时间常数。 第三RC电路耦合到第二校正节点并且具有等于与第一RC电路相当的时间常数。 第二放大器基于校正节点提供校正的感测信号。

公开(公告)号：US07782031B2

公开(公告)日：2010-08-24

申请号：US12006703

申请日：2008-01-04

申请人： Weihong Qiu ,  Shangyang Xiao ,  Jun Liu

发明人： Weihong Qiu ,  Shangyang Xiao ,  Jun Liu

IPC分类号： G05F3/16 ,  G05F1/00

CPC分类号： G06F1/26 ,  H01F3/14 ,  H01F17/04 ,  H02M3/1584

摘要： A method includes simultaneously driving a load via first and second magnetically coupled regulator phases for a first duration, uncoupling one of the phases from the load after the first duration, and, after uncoupling the one phase from the load, allowing a current through the one phase to decay. For example, such a method allows energy stored in the uncoupled phase to be recaptured to the output transient response of a power supply.

摘要翻译： 一种方法包括通过第一和第二磁耦合调节器相位同时驱动负载第一持续时间，在第一持续时间之后从负载中解耦耦合相中的一个，并且在将一个相与负载分离后，允许电流通过一个 相衰变。 例如，这种方法允许存储在非耦合相中的能量被重新捕获到电源的输出瞬态响应。

公开(公告)号：US07667440B2

公开(公告)日：2010-02-23

申请号：US12006726

申请日：2008-01-04

申请人： Weihong Qiu ,  Shangyang Xiao ,  Jun Liu

发明人： Weihong Qiu ,  Shangyang Xiao ,  Jun Liu

IPC分类号： G05F1/253

CPC分类号： G06F1/26 ,  H01F3/14 ,  H01F17/04 ,  H02M3/1584

摘要： An embodiment of a power-supply controller is operable to couple a first node of a first inductor to first and second reference nodes, the first inductor composing a first phase of a power supply and having a second node coupled to an output node of the power supply. The controller is also operable to couple a first node of a second inductor to third and fourth reference nodes, the second inductor composing a second phase of the power supply and having a second node. Furthermore, the controller is operable to uncouple the second node of the second inductor from the output node of the power supply. For example, where the first and second inductors are magnetically coupled, such a controller allows the power supply to operate as an uncoupled-inductor (UI) power supply in one mode, and as a coupled-inductor (CI) power supply in another mode.

摘要翻译： 电源控制器的实施例可操作以将第一电感器的第一节点耦合到第一和第二参考节点，第一电感器组成电源的第一相位并且具有耦合到电力的输出节点的第二节点 供应。 控制器还可操作以将第二电感器的第一节点耦合到第三和第四参考节点，第二电感器组成电源的第二相并具有第二节点。 此外，控制器可操作地将第二电感器的第二节点与电源的输出节点断开。 例如，在第一和第二电感器被磁耦合的情况下，这种控制器允许电源在一种模式中作为非耦合电感器（UI）电源运行，并且作为另一模式中的耦合电感器（CI）电源 。