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1. 发明授权

US07479910B1 Capacitive digital-to-analog converter reset in an implantable medical device analog-to-digital converter 有权
标题翻译：可植入医疗器件模数转换器中的电容数模转换器复位
公开(公告)号：US07479910B1
公开(公告)日：2009-01-20
申请号：US11861856
申请日：2007-09-26
申请人： Michael W. Heinks , Joel A. Anderson , Wenxiao Tan
发明人： Michael W. Heinks , Joel A. Anderson , Wenxiao Tan
IPC分类号： H03M3/00
CPC分类号： A61N1/3704 , H03M3/382 , H03M3/39
摘要： In general, this disclosure describes techniques for capacitive digit-to-analog converter (CAPDAC) resetting in an implantable medical device (IMD) analog-to-digital converter (ADC). The CAPDAC of an IMD ADC may occasionally be reset to increase the accuracy of its output. The output of the CAPDAC may be disconnected from a negative feedback input of an integrator and connected to a pseudo load during the reset. Disconnecting the CAPDAC from the negative feedback input of the integrator reduces the affect of the reset on the integrator. During the reset of the CAPDAC, the negative feedback input of integrator is coupled to a sample and hold capacitor, which temporarily provides an input approximately equal to a previous, e.g., immediate, value of the output of CAPDAC prior to the reset. Thus, the resetting of the CAPDAC is done in such a manner that the affect of the reset on integrator is substantially reduced or eliminated.
摘要翻译：通常，本公开描述了用于可植入医疗设备（IMD）模数转换器（ADC）中的电容性数模转换器（CAPDAC）复位的技术。 IMD ADC的CAPDAC可能偶尔被复位以提高其输出的精度。 CAPDAC的输出可能与积分器的负反馈输入断开，并在复位期间连接到伪负载。将CAPDAC与积分器的负反馈输入断开，降低了积分器上复位的影响。在CAPDAC的复位期间，积分器的负反馈输入耦合到采样和保持电容器，其在复位之前临时提供大约等于CAPDAC的先前（例如）立即数的输出值的输入。因此，CAPDAC的复位以这样的方式完成，使得积分器上的复位的影响被显着地减少或消除。

2. 发明申请

US20100277142A1 On-Chip Current Sensing 有权
标题翻译：片内电流检测
公开(公告)号：US20100277142A1
公开(公告)日：2010-11-04
申请号：US12433273
申请日：2009-04-30
申请人： Wenxiao Tan , Juergen Luebbe
发明人： Wenxiao Tan , Juergen Luebbe
IPC分类号： G05F1/10
CPC分类号： H02M7/53803 , G01R19/0092 , H02M2001/0009
摘要： One embodiment of the invention includes an on-chip current-sense system for measuring a magnitude of an output current through a power transistor. The system includes a first sense transistor that conducts a first reference current to or from a phase node and a second sense transistor configured to conduct a second reference current to or from a power rail. The first and second sense transistors can be substantially identical and can be proportionally matched to the power transistor. An OTA receives the first and second reference currents and a third reference current that flows to or from the phase node and generates a sense current that is proportional to the output current in response to the first, second, and third reference currents. A sense circuit compares the sense current with a predetermined magnitude and generates an over-current signal in response to the sense current being greater than the predetermined magnitude to indicate an over-current condition of the output current.
摘要翻译：本发明的一个实施例包括用于测量通过功率晶体管的输出电流的大小的片上电流检测系统。该系统包括第一检测晶体管，其将第一参考电流传导到相位节点或从相位节点传导第一参考电流，第二感测晶体管被配置为将第二参考电流传导到电力轨道或从电力轨道传导第二参考电流。第一和第二感测晶体管可以是基本相同的并且可以与功率晶体管成比例地匹配。 OTA接收第一和第二参考电流以及流过相位节点的第三参考电流，并响应于第一，第二和第三参考电流产生与输出电流成正比的感测电流。感测电路将感测电流与预定幅度进行比较，并且响应于大于预定幅度的感测电流产生过电流信号，以指示输出电流的过电流状态。

3. 发明申请

US20080224764A1 Switched capacitor notch filter circuits 有权
标题翻译：开关电容陷波滤波电路
公开(公告)号：US20080224764A1
公开(公告)日：2008-09-18
申请号：US11716835
申请日：2007-03-12
申请人： Wenxiao Tan
发明人： Wenxiao Tan
IPC分类号： H03K5/00
CPC分类号： H03H19/004
摘要： Switched capacitor notch filter circuits are disclosed. An example switched capacitor notch filter circuit described herein includes a switched capacitor amplifier to receive an input signal and a first feedback signal, to amplify the input signal and the first feedback signal, and to output an output signal, a first integrator to receive the output signal and a second feedback signal, to integrate the output signal and the second feedback signal, and to output the first feedback signal, a second integrator to receive the first feedback signal, to integrate the first feedback signal, and to output the second feedback signal, a sample and hold to receive the output signal, to periodically store a value of the output signal, and to output the value of the output signal, and a first switch to couple the sample and hold to the output signal when the sample and hold is to store the value of the output signal and to isolate the sample and hold from the output signal when the sample and hold is to output the value of the output signal.
摘要翻译：公开了开关电容器陷波滤波器电路。本文所述的示例性开关电容器陷波滤波器电路包括接收输入信号和第一反馈信号的开关电容放大器，以放大输入信号和第一反馈信号，并输出输出信号，第一积分器以接收输出信号和第二反馈信号，以对输出信号和第二反馈信号进行积分，并输出第一反馈信号，第二积分器接收第一反馈信号以集成第一反馈信号，并输出第二反馈信号，采样和保持以接收输出信号，周期性地存储输出信号的值，并输出输出信号的值，以及第一开关，以在采样和保持时耦合采样并保持到输出信号用于存储输出信号的值，并且当采样和保持输出输出信号的值时，将采样和保持与输出信号隔离。

4. 发明授权

US08217615B2 Current sensing in a disk-drive spindle motor 有权
标题翻译：磁盘驱动主轴电机中的电流检测
公开(公告)号：US08217615B2
公开(公告)日：2012-07-10
申请号：US12435823
申请日：2009-05-05
申请人： Wenxiao Tan , Gregory Swize
发明人： Wenxiao Tan , Gregory Swize
IPC分类号： G05F1/10
CPC分类号： G11B19/28 , H02P6/28
摘要： One embodiment of the invention includes a disk-drive spindle motor power regulator system. The system includes a switching system comprising at least one power transistor for each of a plurality of phases of a disk-drive spindle motor. The system also includes a switching controller configured to generate a plurality of switching signals configured to control the at least one power transistor for each of the plurality of phases of the disk-drive spindle motor. The system further includes a current monitor configured to measure a magnitude of an individual phase current through at least one of the plurality of phases of the disk-drive spindle motor.
摘要翻译：本发明的一个实施例包括盘驱动主轴电机功率调节器系统。该系统包括切换系统，该切换系统包括用于盘驱动主轴马达的多个相位中的每一个的至少一个功率晶体管。该系统还包括一个开关控制器，其被配置为产生多个开关信号，该多个开关信号被配置为控制盘驱动主轴电机的多个相位中的每一个的至少一个功率晶体管。该系统还包括电流监视器，其被配置为测量通过盘驱动主轴电动机的多个相中的至少一个的单个相电流的大小。

5. 发明授权

US07928703B2 On-chip current sensing 有权
标题翻译：片内电流检测
公开(公告)号：US07928703B2
公开(公告)日：2011-04-19
申请号：US12433273
申请日：2009-04-30
申请人： Wenxiao Tan , Juergen Luebbe
发明人： Wenxiao Tan , Juergen Luebbe
IPC分类号： G05F1/613
CPC分类号： H02M7/53803 , G01R19/0092 , H02M2001/0009
摘要： One embodiment of the invention includes an on-chip current-sense system for measuring a magnitude of an output current through a power transistor. The system includes a first sense transistor that conducts a first reference current to or from a phase node and a second sense transistor configured to conduct a second reference current to or from a power rail. The first and second sense transistors can be substantially identical and can be proportionally matched to the power transistor. An OTA receives the first and second reference currents and a third reference current that flows to or from the phase node and generates a sense current that is proportional to the output current in response to the first, second, and third reference currents. A sense circuit compares the sense current with a predetermined magnitude and generates an over-current signal in response to the sense current being greater than the predetermined magnitude to indicate an over-current condition of the output current.
摘要翻译：本发明的一个实施例包括用于测量通过功率晶体管的输出电流的大小的片上电流检测系统。该系统包括第一检测晶体管，其将第一参考电流传导到相位节点或从相位节点传导第一参考电流，第二感测晶体管被配置为将第二参考电流传导到电力轨道或从电力轨道传导第二参考电流。第一和第二感测晶体管可以是基本相同的并且可以与功率晶体管成比例地匹配。 OTA接收第一和第二参考电流以及流过相位节点的第三参考电流，并响应于第一，第二和第三参考电流产生与输出电流成正比的感测电流。感测电路将感测电流与预定幅度进行比较，并且响应于大于预定幅度的感测电流产生过电流信号，以指示输出电流的过电流状态。

6. 发明授权

US07474247B1 Detecting overloading of an analog-to-digital converter of an implantable medical device 有权
标题翻译：检测可植入医疗设备的模数转换器的过载
公开(公告)号：US07474247B1
公开(公告)日：2009-01-06
申请号：US11861945
申请日：2007-09-26
申请人： Michael W. Heinks , Joel A. Anderson , Wenxiao Tan
发明人： Michael W. Heinks , Joel A. Anderson , Wenxiao Tan
IPC分类号： H03M1/12
CPC分类号： H03M3/366 , A61N1/3706 , A61N1/3718 , H03M3/434
摘要： In general, this disclosure is related to detecting overload within an analog-to-digital converter (ADC) of an implantable medical device (IMD). The IMD may include an overload detection module that determines whether the ADC is operating in an overload condition. When the overload detection module determines the ADC is operating in the overload condition for a particular period of time, the ADC may send an overload signal to a processor that processes the output of the ADC. The overload signal notifies the processor that the ADC is operating in or is close to operating in the overload condition. In response to the indication from the ADC, the processor of the IMD may disregard the output of the ADC. The processor may continue to disregard the output of the ADC until the overload signal is deactivated, thereby indicating that the ADC is no longer in an overloaded condition.
摘要翻译：通常，本公开涉及检测可植入医疗装置（IMD）的模数转换器（ADC）中的过载。 IMD可以包括一个过载检测模块，用于确定ADC是否工作在过载状态。当过载检测模块确定ADC在特定时间段内处于过载状态时，ADC可能会向处理ADC输出的处理器发送过载信号。过载信号通知处理器ADC正在运行或接近工作在过载状态。响应于ADC的指示，IMD的处理器可能会忽略ADC的输出。处理器可以继续忽略ADC的输出，直到过载信号被去激活，从而指示ADC不再处于过载状态。

7. 发明申请

US20100283422A1 CURRENT SENSING IN A DISK-DRIVE SPINDLE MOTOR 有权
标题翻译：磁盘驱动电机中的电流传感器
公开(公告)号：US20100283422A1
公开(公告)日：2010-11-11
申请号：US12435823
申请日：2009-05-05
申请人： Wenxiao Tan , Gregory Swize
发明人： Wenxiao Tan , Gregory Swize
IPC分类号： H02P6/00
CPC分类号： G11B19/28 , H02P6/28
摘要： One embodiment of the invention includes a disk-drive spindle motor power regulator system. The system includes a switching system comprising at least one power transistor for each of a plurality of phases of a disk-drive spindle motor. The system also includes a switching controller configured to generate a plurality of switching signals configured to control the at least one power transistor for each of the plurality of phases of the disk-drive spindle motor. The system further includes a current monitor configured to measure a magnitude of an individual phase current through at least one of the plurality of phases of the disk-drive spindle motor.
摘要翻译：本发明的一个实施例包括盘驱动主轴电机功率调节器系统。该系统包括切换系统，该切换系统包括用于盘驱动主轴马达的多个相位中的每一个的至少一个功率晶体管。该系统还包括一个开关控制器，其被配置为产生多个开关信号，该多个开关信号被配置为控制盘驱动主轴电机的多个相位中的每一个的至少一个功率晶体管。该系统还包括电流监视器，其被配置为测量通过盘驱动主轴电动机的多个相中的至少一个的单个相电流的大小。

8. 发明授权

US07495508B2 Switched capacitor notch filter circuits 有权
标题翻译：开关电容陷波滤波电路
公开(公告)号：US07495508B2
公开(公告)日：2009-02-24
申请号：US11716835
申请日：2007-03-12
申请人： Wenxiao Tan
发明人： Wenxiao Tan
IPC分类号： H03K5/00
CPC分类号： H03H19/004
摘要： Switched capacitor notch filter circuits are disclosed. An example switched capacitor notch filter circuit described herein includes a switched capacitor amplifier to receive an input signal and a first feedback signal, to amplify the input signal and the first feedback signal, and to output an output signal, a first integrator to receive the output signal and a second feedback signal, to integrate the output signal and the second feedback signal, and to output the first feedback signal, a second integrator to receive the first feedback signal, to integrate the first feedback signal, and to output the second feedback signal, a sample and hold to receive the output signal, to periodically store a value of the output signal, and to output the value of the output signal, and a first switch to couple the sample and hold to the output signal when the sample and hold is to store the value of the output signal and to isolate the sample and hold from the output signal when the sample and hold is to output the value of the output signal.
摘要翻译：公开了开关电容器陷波滤波器电路。本文所述的示例性开关电容器陷波滤波器电路包括接收输入信号和第一反馈信号的开关电容放大器，以放大输入信号和第一反馈信号，并输出输出信号，第一积分器以接收输出信号和第二反馈信号，以对输出信号和第二反馈信号进行积分，并输出第一反馈信号，第二积分器接收第一反馈信号以集成第一反馈信号，并输出第二反馈信号，采样和保持以接收输出信号，周期性地存储输出信号的值，并输出输出信号的值，以及第一开关，以在采样和保持时耦合采样并保持到输出信号用于存储输出信号的值，并且当采样和保持输出输出信号的值时，将采样和保持与输出信号隔离。

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