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：US20120229113A1

公开(公告)日：2012-09-13

申请号：US13235586

申请日：2011-09-19

申请人： MICHAEL JASON HOUSTON ,  WEIHONG QIU ,  EMIL CHEN

发明人： MICHAEL JASON HOUSTON ,  WEIHONG QIU ,  EMIL CHEN

IPC分类号： G05F1/10

CPC分类号： H02M3/1588 ,  H02M2001/0025 ,  Y02B70/1466

摘要： A voltage regulator generates a regulated output voltage responsive to an input voltage and drive control signals. An error amplifier generates an error voltage signal responsive to the regulated output voltage and a reference voltage. A PWM modulator generates a PWM control signal responsive to the error voltage signal, a ramp voltage and an inverse of the reference voltage. Control circuitry within the PWM modulator maintains the error voltage signal applied to the PWM modulator at substantially a same DC voltage level over the reference voltage operating range and maintains the error voltage signal above a minimum value of the ramp voltage. Driver circuitry generates the drive control signals responsive to the PWM control signal.

摘要翻译： 电压调节器根据输入电压和驱动控制信号产生稳定的输出电压。 误差放大器响应于调节的输出电压和参考电压产生误差电压信号。 PWM调制器响应于误差电压信号，斜坡电压和参考电压的反相器产生PWM控制信号。 PWM调制器内的控制电路将在PWM调制器上施加的误差电压信号保持在与参考电压工作范围基本相同的直流电压电平，并将误差电压信号保持在斜坡电压的最小值以上。 驱动器电路根据PWM控制信号产生驱动控制信号。

公开(公告)号：US08344777B2

公开(公告)日：2013-01-01

申请号：US12858181

申请日：2010-08-17

申请人： Weihong Qiu ,  Chun Cheung ,  Emil Chen

发明人： Weihong Qiu ,  Chun Cheung ,  Emil Chen

IPC分类号： H03K3/017

CPC分类号： H03K5/1565 ,  H03K7/08

摘要： Systems, methods, and apparatus for improving steady state operation of a pulse width modulator during transient and soft start events are described herein. An apparatus can include a phase component configured to adaptively modify a pulse width of a first pulse width modulated (PWM) output signal based on a pulse width of a PWM input signal. Further, the apparatus can include a power stage component configured to source at least one of a voltage or a current to a load based on the first PWM output signal. In one example, the phase component can be configured to linearly extend the pulse width of the first PWM output signal based on the pulse width of the PWM input signal. In another example, the phase component can be configured to adaptively modify the pulse width of the first PWM output signal based on a predetermined maximum pulse width.

摘要翻译： 这里描述了用于在瞬态和软启动事件期间改善脉宽调制器的稳态操作的系统，方法和装置。 装置可以包括相位分量，其被配置为基于PWM输入信号的脉冲宽度自适应地修改第一脉宽调制（PWM）输出信号的脉冲宽度。 此外，该装置可以包括功率级组件，其被配置为基于第一PWM输出信号将至少一个电压或电流发送到负载。 在一个示例中，相位分量可以被配置为基于PWM输入信号的脉冲宽度线性地扩展第一PWM输出信号的脉冲宽度。 在另一示例中，相位分量可以被配置为基于预定的最大脉冲宽度自适应地修改第一PWM输出信号的脉冲宽度。

公开(公告)号：US07898310B2

公开(公告)日：2011-03-01

申请号：US12429238

申请日：2009-04-24

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

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

IPC分类号： H03K3/00

CPC分类号： H02M3/1584

摘要： A phase doubler driver circuit includes first control logic generates a first output PWM drive signal and a second output PWM drive signal responsive to an 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.

摘要翻译： 相位倍增器驱动器电路包括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之间的差异。

公开(公告)号：US08723500B2

公开(公告)日：2014-05-13

申请号：US13235586

申请日：2011-09-19

申请人： Michael Jason Houston ,  Weihong Qiu ,  Emil Chen

发明人： Michael Jason Houston ,  Weihong Qiu ,  Emil Chen

IPC分类号： H02M3/156

CPC分类号： H02M3/1588 ,  H02M2001/0025 ,  Y02B70/1466

摘要： A voltage regulator generates a regulated output voltage responsive to an input voltage and drive control signals. An error amplifier generates an error voltage signal responsive to the regulated output voltage and a reference voltage. A PWM modulator generates a PWM control signal responsive to the error voltage signal, a ramp voltage and an inverse of the reference voltage. Control circuitry within the PWM modulator maintains the error voltage signal applied to the PWM modulator at substantially a same DC voltage level over the reference voltage operating range and maintains the error voltage signal above a minimum value of the ramp voltage. Driver circuitry generates the drive control signals responsive to the PWM control signal.

摘要翻译： 电压调节器根据输入电压和驱动控制信号产生稳定的输出电压。 误差放大器响应于调节的输出电压和参考电压产生误差电压信号。 PWM调制器响应于误差电压信号，斜坡电压和参考电压的反相器产生PWM控制信号。 PWM调制器内的控制电路将在PWM调制器上施加的误差电压信号保持在与参考电压工作范围基本相同的直流电压电平，并将误差电压信号保持在斜坡电压的最小值以上。 驱动器电路根据PWM控制信号产生驱动控制信号。

公开(公告)号：US20110204947A1

公开(公告)日：2011-08-25

申请号：US12858181

申请日：2010-08-17

申请人： Weihong Qiu ,  Chun Cheung ,  Emil Chen

发明人： Weihong Qiu ,  Chun Cheung ,  Emil Chen

IPC分类号： H03K5/04

CPC分类号： H03K5/1565 ,  H03K7/08

摘要： Systems, methods, and apparatus for improving steady state operation of a pulse width modulator during transient and soft start events are described herein. An apparatus can include a phase component configured to adaptively modify a pulse width of a first pulse width modulated (PWM) output signal based on a pulse width of a PWM input signal. Further, the apparatus can include a power stage component configured to source at least one of a voltage or a current to a load based on the first PWM output signal. In one example, the phase component can be configured to linearly extend the pulse width of the first PWM output signal based on the pulse width of the PWM input signal. In another example, the phase component can be configured to adaptively modify the pulse width of the first PWM output signal based on a predetermined maximum pulse width.

摘要翻译： 这里描述了用于在瞬态和软启动事件期间改善脉宽调制器的稳态操作的系统，方法和装置。 装置可以包括相位分量，其被配置为基于PWM输入信号的脉冲宽度自适应地修改第一脉宽调制（PWM）输出信号的脉冲宽度。 此外，该装置可以包括功率级组件，其被配置为基于第一PWM输出信号将至少一个电压或电流发送到负载。 在一个示例中，相位分量可以被配置为基于PWM输入信号的脉冲宽度线性地扩展第一PWM输出信号的脉冲宽度。 在另一示例中，相位分量可以被配置为基于预定的最大脉冲宽度自适应地修改第一PWM输出信号的脉冲宽度。