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1.发明授权公开(公告)号：US09641066B2
公开(公告)日：2017-05-02
申请号：US13954687
申请日：2013-07-30
发明人： Naoyuki Tsuruoka , Daijiro Otani , Keita Ikai , Masaki Yamashita
摘要： A current driver is coupled to an inductor; a digital control for regulation of the current driver turns the current driver on or off coupled to the current driver; a comparator output coupled to the input of the digital control for regulation of the driver with inputs to compare a voltage of the inductor to a target voltage, a digital control for selection of one of a set of peaks and valleys of allowable current levels of the current driver, the digital control for selection of one of a set of peaks and valleys coupled to the output of the comparator and an input of the current driver, the digital control for the peak/valley current to monitor the duration of each high and low output state of the comparator output to determine the selection of one of the set of peak and valley of allowable current levels for the current driver.
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2.发明授权Integration of spindle external sense resistor into servo IC with stable resistance control circuit 有权将主轴外部检测电阻集成到伺服IC中，并具有稳定的电阻控制电路公开(公告)号：US08963472B2
公开(公告)日：2015-02-24
申请号：US13847546
申请日：2013-03-20
IPC分类号： H02P6/06
摘要： An apparatus, comprises three driver FETs coupled at their sources; note-driver circuit; a first sense FET coupled to the sources of the three driver FETs; a current mirror having the first sense FET and a mirror FET; wherein the first sense FET is coupled to the mirror FET; a first transconductance amplifier coupled to the first sense FET; a second amplifier coupled to the current mirror, and an output of the first transconductance amplifier is an input to the second amplifier.
摘要翻译： 一种装置，包括在其源处耦合的三个驱动器FET; 笔记本电路; 耦合到三个驱动器FET的源极的第一感测FET; 具有第一感测FET和反射FET的电流镜; 其中所述第一感测FET耦合到所述镜面FET; 耦合到所述第一感测FET的第一跨导放大器; 耦合到电流镜的第二放大器，第一跨导放大器的输出是第二放大器的输入。
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3.发明申请ADAPTIVE INDUCTOR PEAK CURRENT CONTROL OF A SWITCHING REGULATOR FOR MECHANICAL NOISE REDUCTION 有权用于机械噪声降低的开关稳压器的自适应电感峰值电流控制公开(公告)号：US20140055107A1
公开(公告)日：2014-02-27
申请号：US13954687
申请日：2013-07-30
发明人： Naoyuki Tsuruoka , Daijiro Otani , Keita Ikai , Masaki Yamashita
IPC分类号： H02M3/02
摘要： A current driver is coupled to an inductor; a digital control for regulation of the current driver turns the current driver on or off coupled to the current driver; a comparator output coupled to the input of the digital control for regulation of the driver with inputs to compare a voltage of the inductor to a target voltage, a digital control for selection of one of a set of peaks and valleys of allowable current levels of the current driver, the digital control for selection of one of a set of peaks and valleys coupled to the output of the comparator and an input of the current driver, the digital control for the peak/valley current to monitor the duration of each high and low output state of the comparator output to determine the selection of one of the set of peak and valley of allowable current levels for the current driver.
摘要翻译： 电流驱动器耦合到电感器; 用于调节当前驱动器的数字控制器使当前驱动器打开或关闭耦合到当前驱动器; 耦合到数字控制器的输入的比较器输出，用于通过输入来调节驱动器，以将电感器的电压与目标电压进行比较;数字控制器，用于选择一组峰值和谷值中的一个，允许电流水平 电流驱动器，用于选择耦合到比较器的输出的一组峰谷的数字控制和当前驱动器的输入的数字控制，用于监测每个高低的持续时间的峰值/谷值电流的数字控制 输出比较器输出状态，以确定当前驱动器允许电流水平的峰值和谷值之一的选择。
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4.发明申请INTEGRATION OF SPINDLE EXTERNAL SENSE RESISTOR INTO SERVO IC WITH STABLE RESISTANCE CONTROL CIRCUIT 有权将主轴外部感应电阻整合到具有稳定电阻控制电路的伺服IC公开(公告)号：US20130278199A1
公开(公告)日：2013-10-24
申请号：US13847546
申请日：2013-03-20
IPC分类号： H02P8/14
摘要： An apparatus, comprises three driver FETs coupled at their sources; note-driver circuit; a first sense FET coupled to the sources of the three driver FETs; a current mirror having the first sense FET and a mirror FET; wherein the first sense FET is coupled to the mirror FET; a first transconductance amplifier coupled to the first sense FET; a second amplifier coupled to the current mirror, and an output of the first transconductance amplifier is an input to the second amplifier.
摘要翻译： 一种装置，包括在其源处耦合的三个驱动器FET; 笔记本电路; 耦合到三个驱动器FET的源极的第一感测FET; 具有第一感测FET和反射FET的电流镜; 其中所述第一感测FET耦合到所述镜面FET; 耦合到所述第一感测FET的第一跨导放大器; 耦合到电流镜的第二放大器，第一跨导放大器的输出是第二放大器的输入。
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公开(公告)号：US10425052B2
公开(公告)日：2019-09-24
申请号：US15805696
申请日：2017-11-07
发明人： Daijiro Otani
摘要： In some embodiments, a differential input stage comprises a first n-type metal oxide semiconductor transistor (NMOS) pair coupled to a first input and a second input, a second NMOS pair coupled to the first input, a first output node, the second input, and a second output node, a first diode coupled to the first NMOS pair and the first output node, a second diode coupled to the first NMOS pair and the second output node, and a cascaded current source coupled to the first NMOS pair and the second NMOS pair.
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公开(公告)号：US09973152B2
公开(公告)日：2018-05-15
申请号：US15350773
申请日：2016-11-14
发明人： Daijiro Otani , Keita Ikai
CPC分类号： H03F1/523 , G11B5/48 , G11B5/483 , G11B5/4873 , G11B5/596 , G11B5/59622 , H03F1/52 , H03F3/303 , H03F3/45192 , H03F2200/426 , H03F2200/462
摘要： One example includes an amplifier system. The system includes a gain stage configured to conduct a gain current in response to an input voltage. The system also includes a current limit stage coupled to the gain stage and being configured to one of source and sink the gain current and to define a limit amplitude of the gain current during a current limit condition. The system further includes an output stage coupled to the gain stage and configured to conduct an output current through an output node in response to the gain current, the output current having a maximum amplitude during the current limit condition that is proportional to the limit amplitude.
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公开(公告)号：US20170063313A1
公开(公告)日：2017-03-02
申请号：US15350773
申请日：2016-11-14
发明人： Daijiro Otani , Keita Ikai
CPC分类号： H03F1/523 , G11B5/48 , G11B5/483 , G11B5/4873 , G11B5/596 , G11B5/59622 , H03F1/52 , H03F3/303 , H03F3/45192 , H03F2200/426 , H03F2200/462
摘要： One example includes an amplifier system. The system includes a gain stage configured to conduct a gain current in response to an input voltage. The system also includes a current limit stage coupled to the gain stage and being configured to one of source and sink the gain current and to define a limit amplitude of the gain current during a current limit condition. The system further includes an output stage coupled to the gain stage and configured to conduct an output current through an output node in response to the gain current, the output current having a maximum amplitude during the current limit condition that is proportional to the limit amplitude.
摘要翻译： 一个例子包括放大器系统。 该系统包括被配置为响应于输入电压传导增益电流的增益级。 该系统还包括耦合到增益级的电流限制级并且被配置为源极和吸收增益电流之一并且限定在电流极限状态期间增益电流的极限幅度。 该系统还包括耦合到增益级的输出级，并且被配置为响应于增益电流而导通输出电流通过输出节点，输出电流在与极限幅度成比例的电流极限条件下具有最大幅度。
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公开(公告)号：US09495982B2
公开(公告)日：2016-11-15
申请号：US14267515
申请日：2014-05-01
发明人： Daijiro Otani , Keita Ikai
CPC分类号： H03F1/523 , G11B5/48 , G11B5/483 , G11B5/4873 , G11B5/596 , G11B5/59622 , H03F1/52 , H03F3/303 , H03F3/45192 , H03F2200/426 , H03F2200/462
摘要： One example includes an amplifier system. The system includes a gain stage configured to conduct a gain current in response to an input voltage. The system also includes a current limit stage coupled to the gain stage and being configured to one of source and sink the gain current and to define a limit amplitude of the gain current during a current limit condition. The system further includes an output stage coupled to the gain stage and configured to conduct an output current through an output node in response to the gain current, the output current having a maximum amplitude during the current limit condition that is proportional to the limit amplitude.
摘要翻译： 一个例子包括放大器系统。 该系统包括被配置为响应于输入电压传导增益电流的增益级。 该系统还包括耦合到增益级的电流限制级并且被配置为源极和吸收增益电流之一并且限定在电流极限状态期间增益电流的极限幅度。 该系统还包括耦合到增益级的输出级，并且被配置为响应于增益电流而导通输出电流通过输出节点，输出电流在与极限幅度成比例的电流极限条件下具有最大幅度。
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