公开(公告)号：US08508205B2

公开(公告)日：2013-08-13

申请号：US12728458

申请日：2010-03-22

申请人： Paul W. Latham, II ,  Stewart Kenly

发明人： Paul W. Latham, II ,  Stewart Kenly

IPC分类号： G05F1/40

CPC分类号： H02M3/1588 ,  H03K17/687 ,  H03K2217/0018 ,  Y02B70/1466

摘要： A method and apparatus for converting a DC voltage to a lower DC voltage, provides for conducting current from an input terminal, through an inductor to charge a capacitor connected to the inductor at an output terminal and to provide a varying range of load current from the output terminal, alternately switching the input terminal between a supply voltage and a ground potential to produce a desired voltage at the output terminal that is lower than the supply voltage, while providing the varying range of load current, and disconnecting the input terminal from both the supply voltage and the ground potential to reduce an increase in voltage at the output terminal caused by a substantial reduction in the load current, while current through the inductor adjusts in response to the reduced load current.

摘要翻译： 一种用于将DC电压转换为较低DC电压的方法和装置，提供来自输入端子的电流，通过电感器对连接到输出端子处的电感器的电容器进行充电，并提供来自 输出端子，交替地将输入端子切换到电源电压和地电位之间，以在输出端子处产生低于电源电压的期望电压，同时提供负载电流的变化范围，并且将输入端子与两端 电源电压和接地电位，以减少由于负载电流的显着降低引起的输出端子处的电压升高，而通过电感器的电流响应于减小的负载电流而调整。

公开(公告)号：US20120038807A1

公开(公告)日：2012-02-16

申请号：US13280455

申请日：2011-10-25

申请人： Bryan D. Ackland ,  Paul W. Latham, II ,  Joshua C. Park

发明人： Bryan D. Ackland ,  Paul W. Latham, II ,  Joshua C. Park

IPC分类号： H04N5/335

CPC分类号： H04N5/3575 ,  H04N5/3745

摘要： Methods and apparatus are provided for performing multiple correlated double sampling (CDS) operations on an imaging pixel, and in some cases on an array of imaging pixels, during a single integration cycle of the pixel(s). The multiple CDS operations may produce multiple CDS values, which may be processed in combination to produce a resulting value substantially free of various types of noise. The CDS operations may be performed using a CDS circuit including a single-ended charge amplifier having an input capacitor. The charge amplifier may also include a variable capacitance providing a variable gain. The variable capacitance may be provided by a feedback capacitor.

公开(公告)号：US20090267120A1

公开(公告)日：2009-10-29

申请号：US12109846

申请日：2008-04-25

申请人： Bryan D. Ackland ,  Conor S. Rafferty ,  Paul W. Latham, II

发明人： Bryan D. Ackland ,  Conor S. Rafferty ,  Paul W. Latham, II

IPC分类号： H01L31/113

CPC分类号： H01L27/14609 ,  H01L27/14612

摘要： MOS imaging pixels are described. The MOS imaging pixels may comprise bootstrapped source followers, having their bodies connected to their sources. The source followers of the MOS imaging pixels may be used to buffer a signal indicative of an amount of radiation incident on the pixel. MOS imagers are also described, which may comprise one or more MOS imaging pixels of the type described.

摘要翻译： 描述了MOS成像像素。 MOS成像像素可以包括引导源跟随器，其主体连接到它们的源。 可以使用MOS成像像素的源跟随器来缓冲表示入射在像素上的辐射量的信号。 还描述了MOS成像器，其可以包括所描述类型的一个或多个MOS成像像素。

公开(公告)号：US5258760A

公开(公告)日：1993-11-02

申请号：US912386

申请日：1992-07-13

申请人： Kristaan L. Moody ,  Paul W. Latham, II

发明人： Kristaan L. Moody ,  Paul W. Latham, II

IPC分类号： G06J1/00 ,  H03M1/50

CPC分类号： G06J1/00

摘要： Analog-signal integrators are described that have a transfer function containing a composite parameter that is the product of two parameters each of which is separately changeable, via application of digital programming signals. In a continuous analog-signal integrator the integrating capacitor is a programmable capacitor array, preceded in the feed back branch with a programmable voltage divider. In a discrete-time analog-signal integrator the integrating resistor is a switched-capacitor resistor including a programmable capacitor array that is preceded in the input circuit branch by a programmable voltage divider.

摘要翻译： 描述了模拟信号积分器，其具有包含作为两个参数的乘积的复合参数的传递函数，每个参数可以通过应用数字编程信号来单独变化。 在连续的模拟信号积分器中，积分电容器是可编程电容器阵列，在反馈分支中有一个可编程分压器。 在离散时间模拟信号积分器中，积分电阻是一个开关电容电阻，包括一个可编程电容阵列，在可编程分压器的输入电路分支之前。

公开(公告)号：US08344716B2

公开(公告)日：2013-01-01

申请号：US12622484

申请日：2009-11-20

申请人： Stewart Kenly ,  Paul W. Latham, II

发明人： Stewart Kenly ,  Paul W. Latham, II

IPC分类号： G05F1/00

CPC分类号： G01R27/28 ,  H02M3/157 ,  H02M3/1588 ,  Y02B70/1466

摘要： Methods and systems, utilizing simplified digital hardware, for measuring parameters needed for control of a system (referred to as a plant) such as a power supply or motor. In one embodiment, the system for measuring the desired parameters includes simplified digital hardware to implement the functionality of transfer function measurement in the plant.

摘要翻译： 方法和系统，利用简化的数字硬件，用于测量控制系统（称为工厂）所需的参数，如电源或电机。 在一个实施例中，用于测量所需参数的系统包括实现工厂中传递函数测量的功能的简化数字硬件。

公开(公告)号：US08285502B2

公开(公告)日：2012-10-09

申请号：US12622478

申请日：2009-11-20

申请人： Stewart Kenly ,  Paul W. Latham, II

发明人： Stewart Kenly ,  Paul W. Latham, II

IPC分类号： G01R19/00

CPC分类号： G01R19/0092 ,  H02M3/157 ,  H02M2001/0009

摘要： An inductor current estimator for a switching power supply includes a first sensing and averaging component that generates an average of a switch voltage and a second sensing and averaging component that generates an average of an output voltage of the switching power supply. A first subtraction component receives the average of the switch voltage and the average of the output voltage. A first multiplying component receives an output of the first subtraction component and multiplies the output of the first subtraction component by a first model parameter. A second multiplying component multiplies an input to the second multiplying component by a second model parameter. An adding component adds an output of the first multiplying component and an output of the second multiplying component. A delay component receives an output of the adding component and provides an output to an input of the second multiplying component.

摘要翻译： 用于开关电源的电感器电流估计器包括产生开关电压的平均值的第一感测和平均分量以及产生开关电源的输出电压的平均值的第二感测和平均分量。 第一减法分量接收开关电压的平均值和输出电压的平均值。 第一相乘分量接收第一减法分量的输出，并将第一减法分量的输出乘以第一模型参数。 第二乘法分量将输入与第二乘法分量乘以第二模型参数。 添加分量添加第一乘法分量的输出和第二乘法分量的输出。 延迟分量接收加法分量的输出并向第二乘法分量的输入提供输出。

公开(公告)号：US20120217376A1

公开(公告)日：2012-08-30

申请号：US13463007

申请日：2012-05-03

申请人： BRYAN D. ACKLAND ,  Paul W. Latham, II ,  Joshua C. Park

发明人： BRYAN D. ACKLAND ,  Paul W. Latham, II ,  Joshua C. Park

IPC分类号： H01L27/146 ,  H01L31/00

CPC分类号： H04N5/3575 ,  H04N5/3745

摘要： Methods and apparatus are provided for performing multiple correlated double sampling (CDS) operations on an imaging pixel, and in some cases on an array of imaging pixels, during a single integration cycle of the pixel(s). The multiple CDS operations may produce multiple CDS values, which may be processed in combination to produce a resulting value substantially free of various types of noise. The CDS operations may be performed using a CDS circuit including a single-ended charge amplifier having an input capacitor. The charge amplifier may also include a variable capacitance providing a variable gain. The variable capacitance may be provided by a feedback capacitor.

摘要翻译： 提供了用于在像素的单个积分周期期间对成像像素执行多个相关双采样（CDS）操作，并且在一些情况下在成像像素阵列上执行的方法和装置。 多个CDS操作可以产生多个CDS值，其可以组合处理以产生基本上不含各种类型的噪声的结果值。 可以使用包括具有输入电容器的单端电荷放大器的CDS电路来执行CDS操作。 电荷放大器还可以包括提供可变增益的可变电容。 可变电容可由反馈电容器提供。

公开(公告)号：US08120401B2

公开(公告)日：2012-02-21

申请号：US12622511

申请日：2009-11-20

申请人： Stewart Kenly ,  Paul W. Latham, II

发明人： Stewart Kenly ,  Paul W. Latham, II

IPC分类号： H03K7/08

CPC分类号： H03K7/08

摘要： In one embodiment, the digital pulse width modulator of these teachings includes comparators and a number of phases and capable of increasing resolution without increasing clock frequency. In another embodiment, the digital pulse width modulator (DPWM) of these teachings includes equality comparators and a number of phases and increases resolution without increasing clock frequency. A further embodiment of the system of these teachings includes a priority encoded comparator component (in one instance including a number of comparators) comparing duty cycle commands against preset minimums, that embodiment being referred to as a frequency Foldback component. Other embodiments and embodiments of the method of these teachings are also disclosed.

公开(公告)号：US08072525B1

公开(公告)日：2011-12-06

申请号：US12141542

申请日：2008-06-18

申请人： Bryan D. Ackland ,  Paul W. Latham, II ,  Joshua C. Park

发明人： Bryan D. Ackland ,  Paul W. Latham, II ,  Joshua C. Park

IPC分类号： H04N5/335

CPC分类号： H04N5/3575 ,  H04N5/3745

摘要： Methods and apparatus are provided for performing multiple correlated double sampling (CDS) operations on an imaging pixel, and in some cases on an array of imaging pixels, during a single integration cycle of the pixel(s). The multiple CDS operations may produce multiple CDS values, which may be processed in combination to produce a resulting value substantially free of various types of noise. The CDS operations may be performed using a CDS circuit including a single-ended charge amplifier having an input capacitor. The charge amplifier may also include a variable capacitance providing a variable gain. The variable capacitance may be provided by a feedback capacitor.

摘要翻译： 提供了用于在像素的单个积分周期期间对成像像素执行多个相关双采样（CDS）操作，并且在一些情况下在成像像素阵列上执行的方法和装置。 多个CDS操作可以产生多个CDS值，其可以组合处理以产生基本上不含各种类型的噪声的结果值。 可以使用包括具有输入电容器的单端电荷放大器的CDS电路来执行CDS操作。 电荷放大器还可以包括提供可变增益的可变电容。 可变电容可由反馈电容器提供。

公开(公告)号：US20110241634A1

公开(公告)日：2011-10-06

申请号：US13159983

申请日：2011-06-14

申请人： Stewart Kenly ,  Paul W. Latham, II

发明人： Stewart Kenly ,  Paul W. Latham, II

IPC分类号： G05F1/10

CPC分类号： H02M3/156

摘要： Methods for selecting between the two modes (states) of operation, continuous conduction and discontinuous conduction, are disclosed. Systems that are capable of selecting the operating mode and operating in the continuous conduction mode or the discontinuous conduction mode are also disclosed.