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1. 发明授权

US07719245B2 Methods and apparatus to provide self-tracking pre-driver controls 有权
标题翻译：提供自动跟踪预驱动器控制的方法和装置
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。

2. 发明授权

US07868599B2 Method of optimum current blanking time implementation in current sense circuit 有权
标题翻译：电流检测电路实现最佳电流消隐时间的方法
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。

3. 发明授权

US06719387B2 Method for reducing turn-off propagation delay in print head drivers 有权
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.

4. 发明申请

US20090121702A1 METHODS AND APPARATUS TO PROVIDE SELF-TRACKING PRE-DRIVER CONTROLS 有权
标题翻译：提供自我跟踪预驱动器控制的方法和设备
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。

5. 发明申请

US20080136382A1 REFERENCE VOLTAGE GENERATOR FOR REDUCED VOLTAGE OVERSHOOT IN A SWITCH MODE REGULATOR AT THE END OF SOFT-START 审中-公开
标题翻译：用于在软启动结束时开关模式调节器中降低电压的参考电压发生器
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。

6. 发明授权

US08593317B2 Apparatus and system to suppress analog front end noise introduced by charge-pump 有权
标题翻译：用于抑制电荷泵引入的模拟前端噪声的装置和系统
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。

7. 发明申请

US20120176175A1 APPARATUS AND SYSTEM TO SUPPRESS ANALOG FRONT END NOISE INTRODUCED BY CHARGE-PUMP 有权
标题翻译：充电泵引起的模拟前端噪声的装置和系统
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。

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