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1. 发明授权

US07212061B2 DPWM with leading edge blanker circuit 有权
标题翻译： DPWM具有前沿消隐电路
公开(公告)号：US07212061B2
公开(公告)日：2007-05-01
申请号：US11096187
申请日：2005-03-31
申请人： Kafai Leung , Ka Y. Leung , Jinwen Xiao
发明人： Kafai Leung , Ka Y. Leung , Jinwen Xiao
IPC分类号： H03K17/16 , G05F1/10
CPC分类号： H03M1/0863 , G06F1/025 , H03M1/822
摘要： An apparatus for providing over current protection for a digital pulse width modulator is disclosed. The apparatus includes first logic circuitry for generating a primary interrupt indicating that a detected output current is greater than a threshold current. Second logic circuitry blanks out current spikes in the output current occurring on a leading pulse edge of at least one of a plurality of outputs of the digital pulse-width modulator.
摘要翻译：公开了一种用于为数字脉宽调制器提供过流保护的装置。该装置包括用于产生指示检测到的输出电流大于阈值电流的主中断的第一逻辑电路。第二逻辑电路消除在数字脉冲宽度调制器的多个输出中的至少一个的前导脉冲沿出现的输出电流中的电流尖峰。

2. 发明授权

US07245512B2 PID based controller for DC—DC converter with post-processing filters 失效
标题翻译：基于PID的控制器，用于具有后处理滤波器的DC-DC转换器
公开(公告)号：US07245512B2
公开(公告)日：2007-07-17
申请号：US11096598
申请日：2005-03-31
申请人： Ka Y. Leung , Kafai Leung , Jinwen Xiao
发明人： Ka Y. Leung , Kafai Leung , Jinwen Xiao
IPC分类号： H02M3/335
CPC分类号： H02M3/3376 , H02M3/33561 , H02M3/33592 , H02M2001/0012 , Y02B70/1475
摘要： A digital PID controller for controlling the operation of a switching power converter is disclosed. A data converter is provided for converting the analog sense voltage to a digital sense voltage. A difference circuit then determines the difference between the digital sense voltage and a reference voltage as a digital error voltage, which reference voltage represents a desired output DC voltage for the power converter. A digital compensator processes the digital error voltage. The digital compensator includes a PID compensation network for compensating the digital error signal with a discrete time PID control law and a postprocessing filter for processing the output of the PID compensation network, comprised of a sinc filter with variable parameters to define the operating characteristics thereof, such that a first notch associated therewith can be placed at a desired frequency. A switching control signal generator generates switching control signals for controlling the operation of the power converter, wherein the digital compensator and the switching control signal generator operate to minimize the digital error signal. A controller for controls the operation the digital compensator to define the operating characteristics of the sinc filter.
摘要翻译：公开了一种用于控制开关电源转换器的操作的数字PID控制器。提供了一种数据转换器，用于将模拟检测电压转换为数字检测电压。然后，差分电路将数字感测电压和参考电压之间的差作为数字误差电压确定，该参考电压表示功率转换器的期望的输出直流电压。数字补偿器处理数字误差电压。数字补偿器包括用于利用离散时间PID控制定律补偿数字误差信号的PID补偿网络和用于处理PID补偿网络的输出的后处理滤波器，其包括具有可变参数的sinc滤波器以限定其操作特性，使得与其相关联的第一切口可以以期望的频率放置。开关控制信号发生器产生用于控制功率转换器的操作的开关控制信号，其中数字补偿器和开关控制信号发生器操作以最小化数字误差信号。控制器，用于控制数字补偿器的操作，以定义正弦滤波器的工作特性。

3. 发明授权

US07061421B1 Flash ADC with variable LSB 失效
标题翻译：具有可变LSB的闪存ADC
公开(公告)号：US07061421B1
公开(公告)日：2006-06-13
申请号：US11096163
申请日：2005-03-31
申请人： Jinwen Xiao , Ka Y. Leung , Douglas R. Holberg
发明人： Jinwen Xiao , Ka Y. Leung , Douglas R. Holberg
IPC分类号： H03M1/78
CPC分类号： H03M1/363 , H02M3/33592 , Y02B70/1475
摘要： A differential analog-to-digital data converter (ADC) is disclosed for receiving a positive input signal and a negative input signal. A distributed resistive device is provided having taps associated therewith. A plurality of comparators each having a signal input and a reference input are provided, the signal input connected to one of the positive and negative input signals and the reference input connected to a tap on said distributed resistive device. A driver drives current through the distributed resistive device with one of the taps of the distributed resistive device disposed at substantially the other of the positive and negative input signals. A current varying device varys the current through the distributed resistive device to vary the voltage between taps.
摘要翻译：公开了用于接收正输入信号和负输入信号的差分模数转换器（ADC）。提供具有与其相关联的抽头的分布式电阻装置。提供了各自具有信号输入和参考输入的多个比较器，所述信号输入连接到正输入信号和负输入信号中的一个以及连接到所述分布式电阻装置上的抽头的基准输入。驱动器驱动电流通过分布式电阻器件，分布式电阻器件的抽头中的一个位于基本上正负输入信号的另一个处。电流变化的装置通过分布式电阻装置改变电流以改变抽头之间的电压。

4. 发明授权

US08681026B2 Digital to analog converter 有权
标题翻译：数模转换器
公开(公告)号：US08681026B2
公开(公告)日：2014-03-25
申请号：US13408173
申请日：2012-02-29
申请人： Jinwen Xiao , Pavel Konecny , Axel Thomsen , Ka Y. Leung
发明人： Jinwen Xiao , Pavel Konecny , Axel Thomsen , Ka Y. Leung
IPC分类号： H03M1/06
CPC分类号： H03M1/1047 , H03M1/745 , H03M1/785
摘要： An input digital signal is converted to an analog signal using a main digital to analog converter (DAC) and a sub DAC. An offset value is subtracted from the input digital signal to generate an offset adjusted digital signal. The main DAC converts the offset adjusted digital signal to a first analog signal. A second digital signal is generated based on the offset value and a correction factor determined, at least in part, during calibration of the main DAC. The sub DAC converts the second digital to a second analog signal, which when combined with the first analog signal, provides an analog representation of the input digital signal.
摘要翻译：使用主数模转换器（DAC）和子DAC将输入数字信号转换为模拟信号。从输入数字信号中减去偏移值，以生成偏移调整数字信号。主DAC将偏移调整后的数字信号转换为第一个模拟信号。基于偏移值和至少部分地在主DAC的校准期间确定的校正因子来生成第二数字信号。子DAC将第二数字转换为第二模拟信号，当与第一模拟信号组合时，该模拟信号提供输入数字信号的模拟表示。

5. 发明授权

US07323855B2 Digital pulse width modulated power supply with variable LSB 失效
标题翻译：数字脉宽调制电源，可变LSB
公开(公告)号：US07323855B2
公开(公告)日：2008-01-29
申请号：US11095844
申请日：2005-03-31
申请人： Jinwen Xiao , Ka Y. Leung , Douglas R. Holberg
发明人： Jinwen Xiao , Ka Y. Leung , Douglas R. Holberg
IPC分类号： G05F1/46 , G05F1/62
CPC分类号： H02M3/33515 , H02M3/33576 , H02M2001/0012
摘要： A DC-DC digital pulse width modulated power supply is disclosed for generating a DC regulated output voltage. A digital control node has a digital control voltage disposed thereon for controlling the operation of the supply, wherein the digital control voltage has a substantially zero voltage when the output voltage of the supply is at a desired regulation, the digital control voltage having a resolution defined by a least significant bit (LSB). An input node receives a DC analog reference voltage defining the output voltage of the supply. A difference device determines the difference between the analog reference voltage and the output voltage to generate said digital control voltage. An LSB variation device varies the size of the LSB without varying the value of the digital control voltage for a substantially zero difference between the analog reference voltage and the output voltage.
摘要翻译：公开了用于产生直流调节输出电压的DC-DC数字脉宽调制电源。数字控制节点具有设置在其上用于控制电源的操作的数字控制电压，其中当电源的输出电压处于期望的调节时，数字控制电压具有基本为零的电压，数字控制电压具有定义的分辨率通过最低有效位（LSB）。输入节点接收限定电源的输出电压的DC模拟参考电压。差分装置确定模拟参考电压和输出电压之间的差异，以产生所述数字控制电压。 LSB变化装置改变LSB的大小，而不改变模拟参考电压和输出电压之间的基本上零差的数字控制电压的值。

6. 发明授权

US07301488B2 Digital PWM controller for preventing limit cycle oscillations 有权
标题翻译：数字PWM控制器，用于防止极限循环振荡
公开(公告)号：US07301488B2
公开(公告)日：2007-11-27
申请号：US11095193
申请日：2005-03-31
申请人： Ka Y. Leung , Jinwen Xiao
发明人： Ka Y. Leung , Jinwen Xiao
IPC分类号： H03M1/20
CPC分类号： H03K7/08 , H02M3/157
摘要： An apparatus and method for minimizing limit cycle oscillations within a switched power supply includes providing a programmable dither signal as an input to the digital control loop connected between an output and a control input of the switched power supply. The dither signal minimizes limit cycle oscillations from the output of the switched power supply.
摘要翻译：用于最小化开关电源内的极限周期振荡的装置和方法包括提供可编程抖动信号作为连接在开关电源的输出和控制输入之间的数字控制回路的输入。抖动信号使从开关电源的输出的极限周期振荡最小化。

7. 发明授权

US07511465B2 Digital pulse width modulated power supply with variable LSB 失效
标题翻译：数字脉宽调制电源，可变LSB
公开(公告)号：US07511465B2
公开(公告)日：2009-03-31
申请号：US12022008
申请日：2008-01-29
申请人： Jinwen Xiao , Ka Y. Leung , Douglas R. Holberg
发明人： Jinwen Xiao , Ka Y. Leung , Douglas R. Holberg
IPC分类号： G05F1/46 , G05F1/62
CPC分类号： H02M3/33515 , H02M3/33576 , H02M2001/0012
摘要： A DC-DC digital pulse width modulated power supply is disclosed for generating a DC regulated output voltage. A digital control node has a digital control voltage disposed thereon for controlling the operation of the supply, wherein the digital control voltage has a substantially zero voltage when the output voltage of the supply is at a desired regulation, the digital control voltage having a resolution defined by a least significant bit (LSB). An input node receives a DC analog reference voltage defining the output voltage of the supply. A difference device determines the difference between the analog reference voltage and the output voltage to generate said digital control voltage. An LSB variation device varies the size of the LSB without varying the value of the digital control voltage for a substantially zero difference between the analog reference voltage and the output voltage.
摘要翻译：公开了用于产生直流调节输出电压的DC-DC数字脉宽调制电源。数字控制节点具有设置在其上用于控制电源的操作的数字控制电压，其中当电源的输出电压处于期望的调节时，数字控制电压具有基本为零的电压，数字控制电压具有定义的分辨率通过最低有效位（LSB）。输入节点接收限定电源的输出电压的DC模拟参考电压。差分装置确定模拟参考电压和输出电压之间的差异，以产生所述数字控制电压。 LSB变化装置改变LSB的大小，而不改变模拟参考电压和输出电压之间基本上零差的数字控制电压的值。

8. 发明申请

US20130222162A1 DIGITAL TO ANALOG CONVERTER 有权
标题翻译：数字到模拟转换器
公开(公告)号：US20130222162A1
公开(公告)日：2013-08-29
申请号：US13408173
申请日：2012-02-29
申请人： Jinwen Xiao , Pavel Konecny , Axel Thomsen , Ka Y. Leung
发明人： Jinwen Xiao , Pavel Konecny , Axel Thomsen , Ka Y. Leung
IPC分类号： H03M1/10 , H03M1/66
CPC分类号： H03M1/1047 , H03M1/745 , H03M1/785
摘要： An input digital signal is converted to an analog signal using a main digital to analog converter (DAC) and a sub DAC. An offset value is subtracted from the input digital signal to generate an offset adjusted digital signal. The main DAC converts the offset adjusted digital signal to a first analog signal. A second digital signal is generated based on the offset value and a correction factor determined, at least in part, during calibration of the main DAC. The sub DAC converts the second digital to a second analog signal, which when combined with the first analog signal, provides an analog representation of the input digital signal.
摘要翻译：使用主数模转换器（DAC）和子DAC将输入数字信号转换为模拟信号。从输入数字信号中减去偏移值，以生成偏移调整数字信号。主DAC将偏移调整后的数字信号转换为第一个模拟信号。基于偏移值和至少部分地在主DAC的校准期间确定的校正因子来生成第二数字信号。子DAC将第二数字转换为第二模拟信号，当与第一模拟信号组合时，其提供输入数字信号的模拟表示。

9. 发明申请

US20060023479A1 PID based controller for DC-DC converter with post-processing filters 失效
标题翻译：基于PID的控制器，用于具有后处理滤波器的DC-DC转换器
公开(公告)号：US20060023479A1
公开(公告)日：2006-02-02
申请号：US11096598
申请日：2005-03-31
申请人： Ka Leung , Kafai Leung , Jinwen Xiao
发明人： Ka Leung , Kafai Leung , Jinwen Xiao
IPC分类号： H02M3/24
CPC分类号： H02M3/3376 , H02M3/33561 , H02M3/33592 , H02M2001/0012 , Y02B70/1475
摘要： A digital PID controller for controlling the operation of a switching power converter is disclosed. A data converter is provided for converting the analog sense voltage to a digital sense voltage. A difference circuit then determines the difference between the digital sense voltage and a reference voltage as a digital error voltage, which reference voltage represents a desired output DC voltage for the power converter. A digital compensator processes the digital error voltage. The digital compensator includes a PID compensation network for compensating the digital error signal with a discrete time PID control law and a postprocessing filter for processing the output of the PID compensation network, comprised of a sinc filter with variable parameters to define the operating characteristics thereof, such that a first notch associated therewith can be placed at a desired frequency. A switching control signal generator generates switching control signals for controlling the operation of the power converter, wherein the digital compensator and the switching control signal generator operate to minimize the digital error signal. A controller for controls the operation the digital compensator to define the operating characteristics of the sinc filter.
摘要翻译：公开了一种用于控制开关电源转换器的操作的数字PID控制器。提供了一种数据转换器，用于将模拟检测电压转换为数字检测电压。然后，差分电路将数字感测电压和参考电压之间的差作为数字误差电压确定，该参考电压表示功率转换器的期望的输出直流电压。数字补偿器处理数字误差电压。数字补偿器包括用于利用离散时间PID控制定律补偿数字误差信号的PID补偿网络和用于处理PID补偿网络的输出的后处理滤波器，其包括具有可变参数的sinc滤波器以限定其操作特性，使得与其相关联的第一切口可以以期望的频率放置。开关控制信号发生器产生用于控制功率转换器的操作的开关控制信号，其中数字补偿器和开关控制信号发生器操作以最小化数字误差信号。控制器，用于控制数字补偿器的操作，以定义正弦滤波器的工作特性。

10. 发明申请

US20060022732A1 DPWM with leading edge blanker circuit 有权
标题翻译： DPWM具有前沿消隐电路
公开(公告)号：US20060022732A1
公开(公告)日：2006-02-02
申请号：US11096187
申请日：2005-03-31
申请人： Kafai Leung , Ka Leung , Jinwen Xiao
发明人： Kafai Leung , Ka Leung , Jinwen Xiao
IPC分类号： H03K3/017
CPC分类号： H03M1/0863 , G06F1/025 , H03M1/822
摘要： An apparatus for providing over current protection for a digital pulse width modulator is disclosed. The apparatus includes first logic circuitry for generating a primary interrupt indicating that a detected output current is greater than a threshold current. Second logic circuitry blanks out current spikes in the output current occurring on a leading pulse edge of at least one of a plurality of outputs of the digital pulse-width modulator.
摘要翻译：公开了一种用于为数字脉宽调制器提供过流保护的装置。该装置包括用于产生指示检测到的输出电流大于阈值电流的主中断的第一逻辑电路。第二逻辑电路消除在数字脉冲宽度调制器的多个输出中的至少一个的前导脉冲沿出现的输出电流中的电流尖峰。

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