公开(公告)号：US20050179471A1

公开(公告)日：2005-08-18

申请号：US10777991

申请日：2004-02-12

申请人： MD Abidur Rahman ,  William Grose ,  Brett Smith

发明人： MD Abidur Rahman ,  William Grose ,  Brett Smith

IPC分类号： H03B1/00 ,  H03K17/0412

CPC分类号： H03K17/04123

摘要： The present invention provides a system (200) for controlling drive signal timing parameters of an output driver circuit (206). The present invention defines a driver circuit having an output interface (204), and a first transistor (222) coupled to a first voltage supply (230), a first control signal (232), and a first node (220). The circuit also has a first resistive element, coupled between the first node and a second node (234). A second resistive element (228) is coupled to ground. A second transistor (224) is coupled to the second node, to a second control signal (236), and the second resistive element. The circuit has a third transistor (244), coupled to the first and second nodes, and to a third node (240). A third resistive element (242) is coupled between the third node and the output interface. A fourth transistor (238) is coupled to the first and third nodes, and to the output interface. The circuit also has a fifth transistor (216), coupled to a second voltage supply (218), to the first node, and to the output interface.

摘要翻译： 本发明提供一种用于控制输出驱动电路（206）的驱动信号定时参数的系统（200）。 本发明定义了具有输出接口（204）和耦合到第一电压源（230），第一控制信号（232）和第一节点（220）的第一晶体管（222）的驱动器电路。 电路还具有耦合在第一节点和第二节点（234）之间的第一电阻元件。 第二电阻元件（228）耦合到地。 第二晶体管（224）耦合到第二节点，耦合到第二控制信号（236）和第二电阻元件。 电路具有耦合到第一和第二节点以及耦合到第三节点（240）的第三晶体管（244）。 第三电阻元件（242）耦合在第三节点和输出接口之间。 第四晶体管（238）耦合到第一和第三节点以及输出接口。 电路还具有耦合到第二电压源（218）的第五晶体管（216）到第一节点和输出接口。

公开(公告)号：US07719245B2

公开(公告)日：2010-05-18

申请号：US11937282

申请日：2007-11-08

申请人： Huijuan Li ,  Md Abidur Rahman ,  Brett E. Smith

发明人： Huijuan Li ,  Md Abidur Rahman ,  Brett E. Smith

IPC分类号： G05F1/44 ,  G05F1/56

CPC分类号： H02M1/08 ,  H02M3/158

摘要： Methods and apparatus for a self-tracking high-side pre-driver control are described. In an example, a method is described comprising charging a first terminal associated with a first capacitive element to a first voltage with respect to ground and a second terminal associated with a second capacitive element to a second voltage with respect to ground, changing the first voltage and the second voltage with respect to ground by changing a swing voltage, selecting one of the first voltage or the second voltage based on a first switched-mode power supply topology or a second switched-mode power supply topology and driving a transistor using the selected voltage.

摘要翻译： 描述了用于自跟踪高侧预驱动器控制的方法和装置。 在一个示例中，描述了一种方法，其包括：将与第一电容元件相关联的第一端子相对于地面的第一电压和与第二电容元件相关联的第二端子相对于地面充电到第二电压， 并且通过改变摆动电压相对于地的第二电压，基于第一开关模式电源拓扑或第二开关模式电源拓扑选择第一电压或第二电压中的一个，并且使用所选择的驱动晶体管 电压。

公开(公告)号：US07868599B2

公开(公告)日：2011-01-11

申请号：US11986775

申请日：2007-11-26

申请人： Md Abidur Rahman ,  Huijuan Li ,  Brett E. Smith ,  Zheng Li

发明人： Md Abidur Rahman ,  Huijuan Li ,  Brett E. Smith ,  Zheng Li

IPC分类号： G05F1/00

CPC分类号： G01R19/0092 ,  H02M3/158 ,  H02M2001/0009

摘要： In a method and system for sensing current in a switching regulator (SWR) operating in a current mode, a power switch is coupled to receive the current from a switching element, the power switch being controlled by a gate signal. An inrush of the current causes an initial transient spike (ITS). A buffer having a buffer input and a buffer output is coupled to receive the gate signal and provide a buffered gate signal. The buffer output is disabled during the ITS. A sense switch (SW) is coupled to receive a portion of the current from the switching element, the SW being turned on by the buffered gate signal after the initial transient spike. A sense resistor (SR) is coupled to receive the portion of the current from the SW. An amplifier converts the portion of the current through the SR to a voltage signal for controlling the SWR.

摘要翻译： 在用于感测以当前模式工作的开关调节器（SWR）中的电流的方法和系统中，电源开关被耦合以从开关元件接收电流，功率开关由门信号控制。 电流的浪涌导致初始瞬态尖峰（ITS）。 具有缓冲器输入和缓冲器输出的缓冲器被耦合以接收栅极信号并提供缓冲的栅极信号。 缓冲区输出在ITS期间被禁用。 感测开关（SW）被耦合以从开关元件接收电流的一部分，在初始瞬态尖峰之后，SW被缓冲的栅极信号导通。 耦合感测电阻器（SR）以从SW接收电流的一部分。 放大器将通过SR的电流的一部分转换成用于控制SWR的电压信号。

公开(公告)号：US20080136382A1

公开(公告)日：2008-06-12

申请号：US11567481

申请日：2006-12-06

申请人： Shanmuganand Chellamuthu ,  Md Abidur Rahman ,  Luthuli Edem Dake

发明人： Shanmuganand Chellamuthu ,  Md Abidur Rahman ,  Luthuli Edem Dake

IPC分类号： G05F1/00

CPC分类号： G05F1/468 ,  H02M1/36 ,  H02M3/156

摘要： The reference voltage generator for a switch mode regulator includes: a reference voltage source; a soft-start voltage generator; and a comparator having a directional offset for comparing an output of the reference voltage source with an output of the soft-start voltage generator. Because of the intentional directional offset, the pass switch does not turn ON during the transition from the ramp voltage to reference voltage, therefore reducing energy stored in the inductor. Thus the voltage overshoot is reduced during the end of the soft-start cycle.

摘要翻译： 用于开关模式调节器的参考电压发生器包括：参考电压源; 软启动电压发生器; 以及具有用于将参考电压源的输出与软启动电压发生器的输出进行比较的方向偏移的比较器。 由于有意的方向偏移，在从斜坡电压转换到参考电压时，通过开关不会导通，因此减少了存储在电感中的能量。 因此，在软启动周期结束时，电压过冲减小。

公开(公告)号：US06952120B2

公开(公告)日：2005-10-04

申请号：US10777991

申请日：2004-02-12

申请人： MD Abidur Rahman ,  William E. Grose ,  Brett E. Smith

发明人： MD Abidur Rahman ,  William E. Grose ,  Brett E. Smith

IPC分类号： H03B1/00 ,  H03K17/0412

CPC分类号： H03K17/04123

摘要： The present invention provides a system (200) for controlling drive signal timing parameters of an output driver circuit (206). The present invention defines a driver circuit having an output interface (204), and a first transistor (222) coupled to a first voltage supply (230), a first control signal (232), and a first node (220). The circuit also has a first resistive element, coupled between the first node and a second node (234). A second resistive element (228) is coupled to ground. A second transistor (224) is coupled to the second node, to a second control signal (236), and the second resistive element. The circuit has a third transistor (244), coupled to the first and second nodes, and to a third node (240). A third resistive element (242) is coupled between the third node and the output interface. A fourth transistor (238) is coupled to the first and third nodes, and to the output interface. The circuit also has a fifth transistor (216), coupled to a second voltage supply (218), to the first node, and to the output interface.

摘要翻译： 本发明提供一种用于控制输出驱动电路（206）的驱动信号定时参数的系统（200）。 本发明定义了具有输出接口（204）和耦合到第一电压源（230），第一控制信号（232）和第一节点（220）的第一晶体管（222）的驱动器电路。 电路还具有耦合在第一节点和第二节点（234）之间的第一电阻元件。 第二电阻元件（228）耦合到地。 第二晶体管（224）耦合到第二节点，耦合到第二控制信号（236）和第二电阻元件。 电路具有耦合到第一和第二节点以及耦合到第三节点（240）的第三晶体管（244）。 第三电阻元件（242）耦合在第三节点和输出接口之间。 第四晶体管（238）耦合到第一和第三节点以及输出接口。 电路还具有耦合到第二电压源（218）的第五晶体管（216）到第一节点和输出接口。

公开(公告)号：US06719387B2

公开(公告)日：2004-04-13

申请号：US10200718

申请日：2002-07-22

申请人： Md Abidur Rahman ,  Brett E. Smith

发明人： Md Abidur Rahman ,  Brett E. Smith

IPC分类号： B41J2938

CPC分类号： B41J29/38

摘要： An improved inkjet print head driver. The driver includes a source of predrive charge for a first, drive transistor coupled by its source and drain between an output node and a power supply, and having its gate coupled to the source of predrive charge. A second transistor is provided, adapted to receive an input signal at its gate. A third, control transistor is coupled by its source and drain between the gate of the first transistor and the second transistor, the second transistor being coupled by its source and drain between the third transistor and ground. Optionally, a resistor is coupled in parallel with the third transistor, i.e., across the source and drain of the third transistor.

公开(公告)号：US08593317B2

公开(公告)日：2013-11-26

申请号：US12986038

申请日：2011-01-06

申请人： Sualp Aras ,  Guhaprakash Amudhan ,  Md Abidur Rahman ,  Xiaochun Zhao

发明人： Sualp Aras ,  Guhaprakash Amudhan ,  Md Abidur Rahman ,  Xiaochun Zhao

IPC分类号： H03M1/12 ,  H03L7/06

CPC分类号： H04N5/3577

摘要： An apparatus, comprising: a charge-pump; a sampler that samples an optical signal, including: a black sampler; a video sampler; and an analog to digital converter. The first aspect further provides a single clock that is coupled to and provides clocking signals to: a) the charge-pump logic that is coupled to the charge-pump; and b) the sampler logic that is coupled to the sampler that samples the optical signal.

摘要翻译： 一种装置，包括：电荷泵; 采样器采样光信号，包括：黑色采样器; 视频采样器; 和模数转换器。 第一方面还提供了一个单个时钟，其耦合到并提供时钟信号以便：a）耦合到电荷泵的电荷泵逻辑; 以及b）耦合到采样器的取样器逻辑，其对光信号进行采样。

公开(公告)号：US20120176175A1

公开(公告)日：2012-07-12

申请号：US12986038

申请日：2011-01-06

申请人： Sualp Aras ,  Guhaprakash Amudhan ,  Md Abidur Rahman ,  Xiaochun Zhao

发明人： Sualp Aras ,  Guhaprakash Amudhan ,  Md Abidur Rahman ,  Xiaochun Zhao

IPC分类号： G06F1/04

CPC分类号： H04N5/3577

摘要： An apparatus, comprising: a charge-pump; a sampler that samples an optical signal, including: a black sampler; a video sampler; and an analog to digital converter. The first aspect further provides a single clock that is coupled to and provides clocking signals to: a) the charge-pump logic that is coupled to the charge-pump; and b) the sampler logic that is coupled to the sampler that samples the optical signal.

摘要翻译： 一种装置，包括：电荷泵; 采样器采样光信号，包括：黑色采样器; 视频采样器; 和模数转换器。 第一方面还提供了一个单个时钟，其耦合到并提供时钟信号以便：a）耦合到电荷泵的电荷泵逻辑; 以及b）耦合到采样器的采样器逻辑，其对光信号进行采样。

公开(公告)号：US20090121702A1

公开(公告)日：2009-05-14

申请号：US11937282

申请日：2007-11-08

申请人： Huijuan Li ,  Md Abidur Rahman ,  Brett E. Smith

发明人： Huijuan Li ,  Md Abidur Rahman ,  Brett E. Smith

IPC分类号： G05F5/00

CPC分类号： H02M1/08 ,  H02M3/158

摘要： Methods and apparatus for a self-tracking high-side pre-driver control are described. In an example, a method is described comprising charging a first terminal associated with a first capacitive element to a first voltage with respect to ground and a second terminal associated with a second capacitive element to a second voltage with respect to ground, changing the first voltage and the second voltage with respect to ground by changing a swing voltage, selecting one of the first voltage or the second voltage based on a first switched-mode power supply topology or a second switched-mode power supply topology and driving a transistor using the selected voltage.

摘要翻译： 描述了用于自跟踪高侧预驱动器控制的方法和装置。 在一个示例中，描述了一种方法，其包括：将与第一电容元件相关联的第一端子相对于地面的第一电压和与第二电容元件相关联的第二端子相对于地面充电到第二电压， 并且通过改变摆动电压相对于地的第二电压，基于第一开关模式电源拓扑或第二开关模式电源拓扑选择第一电压或第二电压中的一个，并且使用所选择的驱动晶体管 电压。