-
公开(公告)号：US06775164B2
公开(公告)日：2004-08-10
申请号：US10099661
申请日：2002-03-14
申请人： Chuck Wong , Paul W. Latham, II , Shawn Laliberte
发明人： Chuck Wong , Paul W. Latham, II , Shawn Laliberte
IPC分类号： H02M100
摘要： A three-terminal low-voltage PWM controller chip includes a first terminal for receiving operating bias current supply and a feedback control signal related to an output parameter of an electrical circuit to be controlled; a second terminal connected to an output switch providing digital width-modulated control pulses to control duty cycle of the electrical circuit; a third terminal ground connection; a clocked pulse width modulation circuit responsive to current flow between the second terminal and the third terminal and the feedback control value for controlling the digital output switch; and, feedback signal separation circuitry for separating the feedback control signal from the operating bias current supply. A start-up circuit is also provided.
摘要翻译： 三端低电压PWM控制器芯片包括用于接收工作偏置电流源的第一端子和与要控制的电路的输出参数相关的反馈控制信号; 连接到输出开关的第二端子，提供数字宽度调制的控制脉冲以控制电路的占空比; 第三端接地连接; 响应于第二端子和第三端子之间的电流的时钟脉冲宽度调制电路和用于控制数字输出开关的反馈控制值; 以及用于将反馈控制信号与工作偏置电流源分离的反馈信号分离电路。 还提供启动电路。
-
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
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
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
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。
-
6.发明授权Methods and systems for component value estimation in power supplies/converters 有权电源/转换器中元件值估计的方法和系统公开(公告)号：US08253402B2
公开(公告)日：2012-08-28
申请号：US12622500
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： G05F1/44
CPC分类号： H02M3/1588 , H02M3/157 , Y02B70/1466
摘要： In one embodiment, the method of these teachings includes decomposing the output ripple voltage into its constituent components and utilizing the scale factor necessary for this decomposition to obtain the measure capacitance and ESR for a power supply/converter.
摘要翻译： 在一个实施例中，这些教导的方法包括将输出纹波电压分解成其组成部件并利用该分解所需的比例因子来获得电源/转换器的测量电容和ESR。
-
公开(公告)号：US08063422B2
公开(公告)日：2011-11-22
申请号：US12109846
申请日：2008-04-25
IPC分类号： H01L31/062
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。
-
8.发明授权Methods and systems for control of switches in power regulators/power amplifiers 有权用于控制功率调节器/功率放大器中开关的方法和系统公开(公告)号：US07880454B2
公开(公告)日：2011-02-01
申请号：US11962571
申请日：2007-12-21
申请人： Paul W. Latham, II , Stewart Kenly , Laszlo Balogh
发明人： Paul W. Latham, II , Stewart Kenly , Laszlo Balogh
IPC分类号： G05F1/00
CPC分类号： H02M3/1588 , Y02B70/1466
摘要： Systems and methods control timing of switches in power regulators and power amplifiers. The systems and methods monitor a switch node voltage and obtain rising and falling edges of signals obtained from the monitoring. The systems and methods utilize the rising and falling edges of switch drive signals and predetermined data to obtain delay times for subsequent drive signals.
摘要翻译： 系统和方法控制功率调节器和功率放大器中开关的时序。 系统和方法监测开关节点电压，并获得从监控获得的信号的上升沿和下降沿。 系统和方法利用开关驱动信号和预定数据的上升沿和下降沿来获得后续驱动信号的延迟时间。
-
9.发明申请METHODS AND SYSTEMS FOR COMPONENT VALUE ESTIMATION IN POWER SUPPLIES/CONVERTERS 有权电源/转换器中组件价值估计的方法和系统公开(公告)号：US20100127682A1
公开(公告)日：2010-05-27
申请号：US12622500
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： G05F1/10
CPC分类号： H02M3/1588 , H02M3/157 , Y02B70/1466
摘要： In one embodiment, the method of these teachings includes decomposing the output ripple voltage into its constituent components and utilizing the scale factor necessary for this decomposition to obtain the measure capacitance and ESR for a power supply/converter.
摘要翻译： 在一个实施例中，这些教导的方法包括将输出纹波电压分解成其组成部件并利用该分解所需的比例因子来获得电源/转换器的测量电容和ESR。
-
10.发明授权
公开(公告)号：US5331218A
公开(公告)日：1994-07-19
申请号：US912382
申请日：1992-07-13
CPC分类号： H03H19/004
摘要： A notch filter circuit includes first and second operational amplifiers, each having a capacitor connected from the amplifier output to the input. A third capacitor is connected between the second-amplifier input and the filter circuit input. A first switched-capacitor resistor is connected between the filter circuit input and the first-amplifier input. A second switched-capacitor resistor is connected between the first amplifier output and the second amplifier input. The second-amplifier output is connected to the filter circuit output. A third switched-capacitor resistor is connected between said filter circuit output and said first amplifier input; First and second programmable capacitor arrays are connected respectively in parallel with the third switched-capacitor resistor and in parallel with the first switched-capacitor resistor, so that a change only in the capacitance of the second capacitor array causes a corresponding change in the filter notch depth and a change only in the capacitance of the first capacitor array causes a corresponding change in the filter notch width. The first and second capacitor arrays each have a group of digital programming terminals that may be connected together for making fixed the ratio of the capacitance values of the two arrays. A digitally programmable voltage divider circuit connected in series with the second programmable capacitor array permits the independent programing of notch depth, i.e. without affecting notch width.
摘要翻译： 陷波滤波电路包括第一和第二运算放大器，每个具有从放大器输出端连接到输入端的电容器。 第二电容器连接在第二放大器输入端和滤波电路输入端之间。 第一个开关电容电阻连接在滤波电路输入端和第一放大器输入端之间。 第二开关电容电阻连接在第一放大器输出端和第二放大器输入端之间。 第二放大器输出连接到滤波电路输出。 第三开关电容电阻连接在所述滤波电路输出端与所述第一放大器输入端之间; 第一和第二可编程电容器阵列分别与第三开关电容器电阻并联连接，并且与第一开关电容器电阻并联，使得仅在第二电容器阵列的电容中的变化导致滤波器陷波的相应变化 深度和仅第一电容器阵列的电容的变化导致滤波器陷波宽度的相应变化。 第一和第二电容器阵列各自具有可以连接在一起的一组数字编程端子，用于固定两个阵列的电容值的比率。 与第二可编程电容器阵列串联连接的数字可编程分压器电路允许对凹口深度进行独立编程，即不影响切口宽度。
-
-
-
-
-
-
-
-
-
搜索结果
47 条记录 (耗时 0.026 秒)