公开(公告)号：US20110080192A1

公开(公告)日：2011-04-07

申请号：US12893356

申请日：2010-09-29

申请人： Kazutoshi Ogawa ,  Katsumi Ishikawa

发明人： Kazutoshi Ogawa ,  Katsumi Ishikawa

IPC分类号： H03K3/00

CPC分类号： H03K17/04123 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/4903 ,  H01L2224/49113 ,  H01L2924/1305 ,  H01L2924/13055 ,  H01L2924/13091 ,  H03K17/063 ,  H03K17/08122 ,  H01L2924/00014 ,  H01L2924/00

摘要： The threshold value for a normally-off junction FET is a low value. Accordingly, in a semiconductor driver circuit using the normally-off junction FET, there have existed such problems as high-accuracy voltage control, high-speed charging into an input capacitor, and misoperations. A semiconductor driver circuit which is the most suitable for the normally-off junction FET is proposed by applying the high-accuracy gate-voltage generation scheme based on a Zener diode, a reduction in the turn-on loss based on a speed-up capacitor, the connection of an inter-gate-source capacitor, and a misoperation-preventing circuit based on the source-terminal optimum implementation scheme.

摘要翻译： 常闭结FET的阈值为低值。 因此，在使用常关结型FET的半导体驱动电路中，存在高精度电压控制，输入电容器的高速充电以及误动作等问题。 通过施加基于齐纳二极管的高精度栅极电压生成方案，基于加速电容器的导通损耗降低，提出了最适合于常闭结FET的半导体驱动电路 ，栅极间电容器的连接以及基于源极端子最优实施方案的防误操作电路。

公开(公告)号：US07830109B2

公开(公告)日：2010-11-09

申请号：US12057040

申请日：2008-03-27

申请人： Toshihiko Sasaki ,  Kazuo Watanabe ,  Katsumi Ishikawa

发明人： Toshihiko Sasaki ,  Kazuo Watanabe ,  Katsumi Ishikawa

IPC分类号： H02K41/02

CPC分类号： G01D5/2457 ,  G01D5/2013 ,  H02K1/2713 ,  H02K1/28 ,  H02K11/215 ,  H02K41/031 ,  H02K2213/03

摘要： A movable member is moved in a preset direction in a linear motor. A characteristic-change position-detecting unit detects a position where the magnetic characteristic of the magnets has abruptly changed. The position detected is used as an origin-setting reference position. A reference position for the absolute position of the magnetic linear encoder is set based on the reference position.

摘要翻译： 可动构件在线性电动机中沿预设方向移动。 特征变化位置检测单元检测磁体的磁特性突然变化的位置。 检测到的位置用作原点设定基准位置。 基于参考位置设定磁性线性编码器的绝对位置的基准位置。

公开(公告)号：US07696650B2

公开(公告)日：2010-04-13

申请号：US12204127

申请日：2008-09-04

申请人： Katsumi Ishikawa ,  Hideki Miyazaki ,  Koichi Suda ,  Katsunori Suzuki

发明人： Katsumi Ishikawa ,  Hideki Miyazaki ,  Koichi Suda ,  Katsunori Suzuki

IPC分类号： H01H9/54

CPC分类号： H03K17/567 ,  Y10T307/747 ,  Y10T307/937 ,  Y10T307/977

摘要： A level shifting circuit, satisfying a requirement of a high tolerated dV/dt level, and a highly reliable inverter circuit, wherein a set pulse signal and a reset pulse signal, both of which are level-shifted to a potential side taking as reference a reference potential of a gate control terminal of a switching terminal, are obtained differentially and integrated, and, in case these pulse signals equal or exceed stipulated integrated values, are transmitted as regular control signals controlling the on/off state.

摘要翻译： 满足高耐受性dV / dt电平的要求的电平移位电路和高可靠性的逆变器电路，其中设置的脉冲信号和复位脉冲信号都被电平转移到电位侧作为参考a 差分地获得开关端子的栅极控制端子的参考电位并积分，并且在这些脉冲信号等于或超过规定的积分值的情况下，作为控制开/关状态的常规控制信号被发送。

公开(公告)号：US07564294B2

公开(公告)日：2009-07-21

申请号：US11962608

申请日：2007-12-21

申请人： Katsumi Ishikawa ,  Hideki Miyazaki ,  Koichi Suda

发明人： Katsumi Ishikawa ,  Hideki Miyazaki ,  Koichi Suda

IPC分类号： H03K17/60

CPC分类号： H03K17/168 ,  H02H7/0844 ,  H02M1/08 ,  H02M7/797

摘要： To provide a highly reliable inverter apparatus which discriminates long-cycle noise generated by the isolated signal transmission element from short-cycle dv/dt noise and induction noise.A low pass filter, band pass filter, and a switching means are provided between the input section of the gate drive circuit of the voltage-drive type power semiconductor switching element and the isolated signal transmission means that transmits the output of the control circuit; and an abnormal signal discriminating circuit is also provided which turns on and off the switching means according to the output of the band pass filter thereby eliminating long-cycle noise derived from the isolated signal transmission element, short-cycle dv/dt noise, and induction noise; and also outputs alarm signals.

摘要翻译： 提供一种高可靠性的逆变器装置，其鉴别由隔离信号传输元件产生的长周期噪声与短周期dv / dt噪声和感应噪声。 在电压驱动型功率半导体开关元件的栅极驱动电路的输入部与发送控制电路的输出的隔离信号发送单元之间设置低通滤波器，带通滤波器和开关单元; 并且还提供异常信号鉴别电路，其根据带通滤波器的输出导通和切断开关装置，从而消除从隔离信号传输元件导出的长周期噪声，短周期dv / dt噪声和感应 噪声; 并输出报警信号。

公开(公告)号：US07483250B2

公开(公告)日：2009-01-27

申请号：US11546360

申请日：2006-10-12

申请人： Katsumi Ishikawa ,  Masataka Sasaki ,  Koichi Suda

发明人： Katsumi Ishikawa ,  Masataka Sasaki ,  Koichi Suda

IPC分类号： H02H3/00 ,  H02H3/08 ,  H02H9/02

CPC分类号： H03K17/0828

摘要： A drive circuit that controls a switching device ON/OFF and a soft cutoff command circuit that gradually decreases the gate terminal voltage of the switching device when short circuit of the switching device is detected. Additionally, an ON-pulse retention command circuit retains the output of the drive circuit ON when the gate terminal voltage is judged to have exceeded a specified value by a gate voltage judgment comparator that detects the gate terminal voltage of the switching device.

摘要翻译： 控制切换装置ON / OFF的驱动电路和软开关指令电路，当检测到开关装置的短路时，逐渐降低开关装置的栅极端子电压。 此外，当通过检测开关装置的栅极端子电压的栅极电压判断比较器判断栅极端子电压已经超过规定值时，ON脉冲保持指令电路保持驱动电路的输出。

公开(公告)号：US20080265690A1

公开(公告)日：2008-10-30

申请号：US12056984

申请日：2008-03-27

申请人： Toshihiko Sasaki ,  Kazuo Watanabe ,  Katsumi Ishikawa

发明人： Toshihiko Sasaki ,  Kazuo Watanabe ,  Katsumi Ishikawa

IPC分类号： H02K41/02

CPC分类号： H02K41/03 ,  H02K29/08

摘要： A position-data converter and a motor-drive control device are connected. The position-data converter receives two-phase, sine-wave analog signals da and db from two first magnetic detectors, respectively, and converts these signals da and db to position data. On receiving a positioning instruction, the motor-drive control device calculates the value of current, from the current position signal generated by the position-data converter. The permanent magnets incorporated in a linear motor are used as components of a linear scale, as well.

摘要翻译： 位置数据转换器和电机驱动控制装置连接。 位置数据转换器分别从两个第一磁性检测器接收两相正弦波模拟信号da和db，并将这些信号da和db转换为位置数据。 在接收到定位指令时，电机驱动控制装置从位置数据转换器产生的当前位置信号计算电流值。 结合在线性电动机中的永磁体也用作线性电动机的组件。

公开(公告)号：US20080224303A1

公开(公告)日：2008-09-18

申请号：US11873454

申请日：2007-10-17

申请人： Sunao Funakoshi ,  Katsumi Ishikawa ,  Tasao Soga

发明人： Sunao Funakoshi ,  Katsumi Ishikawa ,  Tasao Soga

IPC分类号： H01L23/12

CPC分类号： H01L23/473 ,  H01L23/051 ,  H01L23/427 ,  H01L23/4334 ,  H01L24/33 ,  H01L25/072 ,  H01L2224/32245 ,  H01L2224/33181 ,  H01L2924/1305 ,  H01L2924/13055 ,  H01L2924/181 ,  H01L2924/351 ,  H02M7/003 ,  H01L2924/00 ,  H01L2924/00012

摘要： A power semiconductor module with its thermal resistance and overall size reduced. Insulating substrates with electrode metal layers disposed thereon are joined to both the surfaces of a power semiconductor chip by using, for example, soldering. Metal layers are disposed also on the reverse surfaces of the insulating substrates and the metal layers are joined to the heat spreaders by using brazing. Heat radiating fins are provided on the heat radiating surface of at least one of the heat spreaders. The heat radiating side of each of the heat spreaders is covered by a casing to form a refrigerant chamber through which refrigerant flows to remove heat transmitted from the semiconductor chip to the heat spreader.

摘要翻译： 功率半导体模块的热阻和总体尺寸减小。 通过使用例如焊接，将配置有电极金属层的绝缘基板接合到功率半导体芯片的两个表面。 金属层也设置在绝缘基板的背面，金属层通过钎焊与散热器接合。 散热翅片设置在至少一个散热器的散热表面上。 每个散热器的散热侧被壳体覆盖以形成制冷剂室，制冷剂流过该制冷剂室，以将从半导体芯片传递的热量除去到散热器。

公开(公告)号：US20080171216A1

公开(公告)日：2008-07-17

申请号：US12050438

申请日：2008-03-18

申请人： Matahiro Komuro ,  Yuichi Satsu ,  Takao Imagawa ,  Katsumi Ishikawa ,  Takeyuki Itabashi

发明人： Matahiro Komuro ,  Yuichi Satsu ,  Takao Imagawa ,  Katsumi Ishikawa ,  Takeyuki Itabashi

IPC分类号： H01F1/00

CPC分类号： G01R33/383 ,  G01R33/3806 ,  G01R33/3873 ,  Y10T428/12014

摘要： A magnet which includes ferromagnetic powder to be mainly a mother phase containing iron or cobalt. The ferromagnetic powder is provided with a high-resistance layer which has a resistance higher than or equal to ten times as high as a resistance of the mother phase and a Vickers hardness lower than a Vickers hardness of the mother phase. The high-resistance layer is being formed partially or entirely on the surface of the ferromagnetic powder.

摘要翻译： 一种磁铁，其包括主要是含有铁或钴的母相的铁磁性粉末。 铁磁粉末设置有高电阻层，其电阻高于或等于母相电阻的十倍，维氏硬度低于母相维氏硬度。 高电阻层部分地或完全地形成在铁磁性粉末的表面上。

公开(公告)号：US20080074819A1

公开(公告)日：2008-03-27

申请号：US11979874

申请日：2007-11-09

申请人： Masataka Sasaki ,  Katsumi Ishikawa ,  Ryuichi Saito ,  Koichi Suda ,  Katsuaki Takahashi

发明人： Masataka Sasaki ,  Katsumi Ishikawa ,  Ryuichi Saito ,  Koichi Suda ,  Katsuaki Takahashi

IPC分类号： H02H3/20

CPC分类号： B60W20/00 ,  B60K6/485 ,  B60L3/003 ,  B60W10/08 ,  H02H7/20 ,  H02M1/32 ,  H03K17/0828 ,  H03K17/168 ,  Y02T10/6226

摘要： A collector voltage of a power management semiconductor device is detected by a first comparator, and when the detected collector voltage exceeds a first reference voltage, the first comparator outputs a first detection signal. Furthermore, a gate voltage of the power management semiconductor device is detected by a second comparator, and when the detected gate voltage exceeds a second reference voltage, the second comparator outputs a second detection signal. The second reference voltage is a minimum gate voltage for feeding a rated power to the power management semiconductor device or over, and less than a line power voltage of a drive circuit of the power management semiconductor device. When both the first detection signal and second detection signal are being outputted, the gate voltage is reduced by a gate voltage reduction means so as to protect the power management semiconductor device from overcurrent and overvoltage.

摘要翻译： 功率管理半导体器件的集电极电压由第一比较器检测，并且当检测到的集电极电压超过第一参考电压时，第一比较器输出第一检测信号。 此外，由第二比较器检测功率管理半导体器件的栅极电压，并且当检测到的栅极电压超过第二参考电压时，第二比较器输出第二检测信号。 第二参考电压是用于向功率管理半导体器件提供额定功率或超过功率管理半导体器件的驱动电路的线电源电压的最小栅极电压。 当输出第一检测信号和第二检测信号两者时，通过栅极电压降低装置降低栅极电压，以保护功率管理半导体器件免于过电流和过电压。

公开(公告)号：US07336118B2

公开(公告)日：2008-02-26

申请号：US11191023

申请日：2005-07-28

申请人： Katsumi Ishikawa ,  Hideki Miyazaki ,  Koichi Suda

发明人： Katsumi Ishikawa ,  Hideki Miyazaki ,  Koichi Suda

IPC分类号： H03K17/687

CPC分类号： H03K17/168 ,  H02H7/0844 ,  H02M1/08 ,  H02M7/797

摘要： To provide a highly reliable inverter apparatus which discriminates long-cycle noise generated by the isolated signal transmission element from short-cycle dv/dt noise and induction noise. A low pass filter, band pass filter, and a switching means are provided between the input section of the gate drive circuit of the voltage-drive type power semiconductor switching element and the isolated signal transmission means that transmits the output of the control circuit; and an abnormal signal discriminating circuit is also provided which turns on and off the switching means according to the output of the band pass filter thereby eliminating long-cycle noise derived from the isolated signal transmission element, short-cycle dv/dt noise, and induction noise; and also outputs alarm signals.

摘要翻译： 提供一种高可靠性的逆变器装置，其鉴别由隔离信号传输元件产生的长周期噪声与短周期dv / dt噪声和感应噪声。 在电压驱动型功率半导体开关元件的栅极驱动电路的输入部与发送控制电路的输出的隔离信号发送单元之间设置低通滤波器，带通滤波器和开关单元; 并且还提供异常信号鉴别电路，其根据带通滤波器的输出导通和切断开关装置，从而消除从隔离信号传输元件导出的长周期噪声，短周期dv / dt噪声和感应 噪声; 并输出报警信号。