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

CPC分类号： H02M1/36 ,  H02M3/156 ,  H02M3/335

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：US5245262A

公开(公告)日：1993-09-14

申请号：US912387

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： G05B11/42 ,  G05B19/414

CPC分类号： G05B19/4142 ,  G05B11/42

摘要： A digitally programmable integrated-circuit analog-signal servo co-processor has digital programming contact pads to which an external microprocessor may be connected, has analog-signal input pads and analog-signal output pads, and includes a plurality of programmable analog-signal-manipulating circuits (ASMC's). Each of the ASMC's has input and output terminals connected to an input programmable-switch matrix so that one or a combination of the ASMC blocks may be connected between the analog-signal input and output contact pads of the integrated circuit. Certain ASMC blocks have microprocessor programmable transfer functions, e.g. ASMC integrator, notch filter, low pass filter, PD compensator and voltage divider. Key ones of those ASMC blocks are discrete-time circuits including switched-capacitor resistors and have transfer functions wherein the parameters are ratios of capacitances and the switching rate frequency to provide accurate and stable performance. This versatile system of digitally programmable circuit configurations and digitally programmable analog (ASMC) transfer functions provides a hybrid analog and digital servo co-processor having high speed, versatility and stability and a low power consumption.

摘要翻译： 数字可编程集成电路模拟信号伺服协处理器具有可连接外部微处理器的数字编程接触焊盘，具有模拟信号输入焊盘和模拟信号输出焊盘，并且包括多个可编程模拟信号 - 操纵电路（ASMC）。 ASMC中的每一个具有连接到输入可编程开关矩阵的输入和输出端子，使得ASMC块中的一个或其组合可以连接在集成电路的模拟信号输入和输出接触焊盘之间。 某些ASMC模块具有微处理器可编程传输功能，例如 ASMC积分器，陷波滤波器，低通滤波器，PD补偿器和分压器。 这些ASMC块中的关键是离散时间电路，包括开关电容电阻，并具有传递函数，其中参数是电容比率和开关速率频率，以提供准确和稳定的性能。 这种数字可编程电路配置和数字可编程模拟（ASMC）传输功能的多功能系统提供了具有高速度，多功能性和稳定性以及低功耗的混合模拟和数字伺服协处理器。

公开(公告)号：USH588H

公开(公告)日：1989-02-07

申请号：US108512

申请日：1987-10-13

申请人： Paul W. Latham, II

发明人： Paul W. Latham, II

IPC分类号： G11B5/012 ,  G11B5/035 ,  G11B5/09

CPC分类号： G11B5/012 ,  G11B5/035 ,  G11B5/09

摘要： A disk drive employs transversal filters as equalizers for each of its read heads, permitting adaptive equalization of read head signals, optimized for each track position.

公开(公告)号：US08629663B2

公开(公告)日：2014-01-14

申请号：US13078283

申请日：2011-04-01

申请人： Paul W. Latham, II ,  Mansur B. Kiadeh ,  Sudha Durvasula

发明人： Paul W. Latham, II ,  Mansur B. Kiadeh ,  Sudha Durvasula

IPC分类号： G05F1/577

CPC分类号： H02M3/158 ,  H02M3/07 ,  H02M2001/0006 ,  H02M2001/009

摘要： A first control system for a power supply includes a switch-mode DC-DC converter module and an FET gate drive module. The switch-mode DC-DC converter module receives an input voltage and generates first and second voltages, the first voltage powering a DC-DC control module. The FET gate drive module selectively drives a plurality of FETs of the power supply using the second voltage thereby generating a desired output voltage from the input voltage. A second control system is directed to driving the second voltage to a desired gate voltage, wherein the desire gate voltage is determined based on at least one of a plurality of operating parameters. A third control system includes controlling first and second voltages generated by a SIDO voltage converter based on the first and second voltages and a damping factor, and generating the damping factor based on current flowing through the inductor of the SIDO voltage converter.

摘要翻译： 用于电源的第一控制系统包括开关模式DC-DC转换器模块和FET栅极驱动模块。 开关模式DC-DC转换器模块接收输入电压并产生第一和第二电压，第一电压为DC-DC控制模块供电。 FET栅极驱动模块使用第二电压选择性地驱动电源的多个FET，从而从输入电压产生期望的输出电压。 第二控制系统旨在将第二电压驱动到期望的栅极电压，其中期望栅极电压基于多个操作参数中的至少一个来确定。 第三控制系统包括基于第一和第二电压和阻尼因子来控制由SIDO电压转换器产生的第一和第二电压，并且基于流过SIDO电压转换器的电感器的电流产生阻尼因子。

公开(公告)号：US08384363B2

公开(公告)日：2013-02-26

申请号：US12761718

申请日：2010-04-16

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

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

IPC分类号： G05F1/613

CPC分类号： H02M3/1588 ,  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.

公开(公告)号：US20120249103A1

公开(公告)日：2012-10-04

申请号：US13078283

申请日：2011-04-01

申请人： Paul W. Latham, II ,  Mansur B. Kiadeh ,  Sudha Durvasula

发明人： Paul W. Latham, II ,  Mansur B. Kiadeh ,  Sudha Durvasula

IPC分类号： G05F1/46

CPC分类号： H02M3/158 ,  H02M3/07 ,  H02M2001/0006 ,  H02M2001/009

摘要： A first control system for a power supply includes a switch-mode DC-DC converter module and an FET gate drive module. The switch-mode DC-DC converter module receives an input voltage and generates first and second voltages, the first voltage powering a DC-DC control module. The FET gate drive module selectively drives a plurality of FETs of the power supply using the second voltage thereby generating a desired output voltage from the input voltage. A second control system is directed to driving the second voltage to a desired gate voltage, wherein the desire gate voltage is determined based on at least one of a plurality of operating parameters. A third control system includes controlling first and second voltages generated by a SIDO voltage converter based on the first and second voltages and a damping factor, and generating the damping factor based on current flowing through the inductor of the SIDO voltage converter.

摘要翻译： 用于电源的第一控制系统包括开关模式DC-DC转换器模块和FET栅极驱动模块。 开关模式DC-DC转换器模块接收输入电压并产生第一和第二电压，第一电压为DC-DC控制模块供电。 FET栅极驱动模块使用第二电压选择性地驱动电源的多个FET，从而从输入电压产生期望的输出电压。 第二控制系统旨在将第二电压驱动到期望的栅极电压，其中期望栅极电压基于多个操作参数中的至少一个来确定。 第三控制系统包括基于第一和第二电压和阻尼因子来控制由SIDO电压转换器产生的第一和第二电压，并且基于流过SIDO电压转换器的电感器的电流产生阻尼因子。

公开(公告)号：US08164320B2

公开(公告)日：2012-04-24

申请号：US13012453

申请日：2011-01-24

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： A system includes a first switch connected to a voltage input and a switching node. A second switch is connected to the switching node and a reference potential. A first circuit generates first rising edges and first falling edges by comparing a voltage at the switching node to a first voltage reference. The first voltage reference is between the reference potential and the voltage input. A second circuit generates second rising edges and second falling edges by comparing the switching node voltage to a second voltage reference. The second voltage reference is less than the reference potential. The controller calculates delay times based on the first rising edges, the first falling edges, the second rising edges and the second falling edges. The controller generates drive signals for the first switch and the second switch based on a duty cycle and the delay times.

摘要翻译： 系统包括连接到电压输入和开关节点的第一开关。 第二开关连接到开关节点和参考电位。 第一电路通过将开关节点处的电压与第一参考电压进行比较来产生第一上升沿和第一下降沿。 第一个参考电压在参考电位和电压输入之间。 第二电路通过将开关节点电压与第二参考电压进行比较来产生第二上升沿和第二下降沿。 第二个参考电压小于参考电位。 控制器基于第一上升沿，第一下降沿，第二上升沿和第二下降沿计算延迟时间。 控制器基于占空比和延迟时间产生第一开关和第二开关的驱动信号。

公开(公告)号：US20120062290A1

公开(公告)日：2012-03-15

申请号：US13301175

申请日：2011-11-21

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

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

IPC分类号： H03L7/08 ,  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.

摘要翻译： 在一个实施例中，这些教导的数字脉冲宽度调制器包括比较器和多个相位，并且能够在不增加时钟频率的情况下提高分辨率。 在另一个实施例中，这些教导的数字脉冲宽度调制器（DPWM）包括相等比较器和多个相位，并且在不增加时钟频率的情况下增加分辨率。 这些教导的系统的另一实施例包括将占空比命令与预设最小值进行比较的优先编码比较器部件（在一个实例中包括多个比较器），该实施例被称为频率折返部件。 还公开了这些教导的方法的其他实施例和实施例。

公开(公告)号：US20110234190A1

公开(公告)日：2011-09-29

申请号：US13157874

申请日：2011-06-10

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

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

IPC分类号： G05F1/618

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.

摘要翻译： 公开了在两种操作模式（状态），连续传导和不连续传导之间进行选择的方法。 还公开了能够选择工作模式并在连续导通模式或不连续导通模式中工作的系统。

公开(公告)号：US07986135B2

公开(公告)日：2011-07-26

申请号：US12119905

申请日：2008-05-13

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

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

IPC分类号： G05F1/40

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.

摘要翻译： 公开了在两种操作模式（状态），连续传导和不连续传导之间进行选择的方法。 还公开了能够选择工作模式并在连续导通模式或不连续导通模式中工作的系统。