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    • 1. 发明授权
    • Level shift circuit and power conversion unit
    • 电平移位电路和电源转换单元
    • US08299836B2
    • 2012-10-30
    • US13029341
    • 2011-02-17
    • Naoki SakuraiJunichi SakanoSeigoh Yukutake
    • Naoki SakuraiJunichi SakanoSeigoh Yukutake
    • H03L5/00
    • H03K19/0175
    • In a level shift circuit, when a power-source voltage variation dV/dt of a high voltage side occurs and influences on a logic level of a circuit, the passing through of a malfunction signal is masked and prevented in the first and second logic circuits, by a signal from a time-constant generation circuit or a portion where a power voltage variation occurs in advance, by utilizing the fact that this variation occurs both at a set side and a reset side. When the power source voltage variation dV/dt is generated at a high voltage side, sufficient allowance in the timing of this masking prevents an erroneous signal from being transmitted to a flip-flop, and a control signal is transmitted from a low voltage side circuit not giving malfunction to a high voltage side circuit, even when there is a production variation in each element in semiconductor processes.
    • 在电平移位电路中,当高电压侧的电源电压变化dV / dt发生并影响电路的逻辑电平时,在第一和第二逻辑电路中屏蔽并防止故障信号的通过 通过利用在设定侧和复位侧出现这种变化的事实,通过来自时间常数生成电路的信号或者预先发生电力电压变化的部分。 当在高电压侧产生电源电压变化dV / dt时,在该掩蔽的定时中的充分允许阻止了错误的信号被发送到触发器,并且控制信号从低电压侧电路 即使在半导体工艺中的每个元件存在生产变化时,也不会对高压侧电路产生故障。
    • 2. 发明申请
    • LEVEL SHIFT CIRCUIT AND POWER CONVERSION UNIT
    • 电平转换电路和电源转换单元
    • US20110227626A1
    • 2011-09-22
    • US13029341
    • 2011-02-17
    • Naoki SAKURAIJunichi SakanoSeigoh Yukutake
    • Naoki SAKURAIJunichi SakanoSeigoh Yukutake
    • H03L5/00
    • H03K19/0175
    • In a level shift circuit, when a power-source voltage variation dV/dt of a high voltage side occurs and influences on a logic level of a circuit, the passing through of a malfunction signal is masked and prevented in the first and second logic circuits, by a signal from a time-constant generation circuit or a portion where a power voltage variation occurs in advance, by utilizing the fact that this variation occurs both at a set side and a reset side. When the power source voltage variation dV/dt is generated at a high voltage side, sufficient allowance in the timing of this masking prevents an erroneous signal from being transmitted to a flip-flop, and a control signal is transmitted from a low voltage side circuit not giving malfunction to a high voltage side circuit, even when there is a production variation in each element in semiconductor processes.
    • 在电平移位电路中,当高电压侧的电源电压变化dV / dt发生并影响电路的逻辑电平时,在第一和第二逻辑电路中屏蔽并防止故障信号的通过 通过利用在设定侧和复位侧出现这种变化的事实,通过来自时间常数生成电路的信号或者预先发生电力电压变化的部分。 当在高电压侧产生电源电压变化dV / dt时,在该掩蔽的定时中的充分允许阻止了错误的信号被发送到触发器,并且控制信号从低电压侧电路 即使在半导体工艺中的每个元件存在生产变化时,也不会对高压侧电路产生故障。
    • 4. 发明申请
    • Electric Power Conversion Apparatus
    • 电力转换装置
    • US20090230938A1
    • 2009-09-17
    • US12336096
    • 2008-12-16
    • Naoki Sakurai
    • Naoki Sakurai
    • G05F1/66
    • H02M7/538H01L2224/48091H01L2224/48227H01L2224/49113H01L2924/13055H01L2924/13091H03K17/567H03K17/691H03K19/017545H01L2924/00014H01L2924/00
    • In an electric power conversion apparatus, there is reduced deterioration in insulation of a means which is provided inside an IC chip and transmits a signal from a low electric potential system to a high electric potential system. The electric power conversion apparatus includes a lower-arm circuit 14 which transmits control signals from a micro computer 10 through the pulse transformers 22 and 23 provided inside an IC chip and outputs the control signal transmitted through the pulse transformer 23 to a lower-arm IGBT 1, a high-voltage nMOS 30 which converts the electric potential of the control signal for an upper-arm IGBT 3 transmitted through the pulse transformer 22 of the lower-arm circuit 14 and an upper-arm circuit 15 which outputs the control signal of which the electric potential is converted by the high-voltage nMOS 30 to the upper-arm IGBT 3.
    • 在电力转换装置中,设置在IC芯片内部的装置的绝缘劣化降低,并将信号从低电位系统发送到高电位系统。 电力转换装置包括下臂电路14,其通过设置在IC芯片内的脉冲变压器22和23从微计算机10发送控制信号,并将通过脉冲变压器23发送的控制信号输出到下臂IGBT 如图1所示,转换通过下臂电路14的脉冲变压器22传输的上臂IGBT3的控制信号的电位的高电压nMOS 30和输出下臂电路14的控制信号的上臂电路15 其电位由高电压nMOS 30转换到上臂IGBT 3。
    • 10. 发明授权
    • Electric power conversion device
    • 电力转换装置
    • US07851866B2
    • 2010-12-14
    • US11338668
    • 2006-01-25
    • Naoki SakuraiMutsuhiro Mori
    • Naoki SakuraiMutsuhiro Mori
    • H01L23/58
    • H03K17/0828H01L2924/0002H03K2017/0806H01L2924/00
    • An object of the present invention is to provide an electric power converter including means for accurately detecting a principal current of IGBT. An electric power conversion device according to the present invention includes principal current estimation means for estimating a principal current by using: an output of temperature measuring means whose diode is disposed in the same semiconductor substrate as an IGBT including an emitter having flowing therethrough the principal current and a sense emitter having flowing therethrough a sense current proportional to the principal current; the sense current; and the information, preliminarily stored in memory means, on the relationship among the semiconductor substrate temperature, the principal current and the sense currant.
    • 本发明的目的是提供一种电力转换器,其包括用于精确地检测IGBT的主电流的装置。 根据本发明的电力转换装置包括:主电流估计装置,用于通过使用以下方式估计主电流的温度测量装置的输出:其二极管设置在与包括流过其中的主电流的IGBT的IGBT相同的半导体衬底中 以及感测发射器,其通过与主电流成比例的感测电流流动; 感应电流; 以及预先存储在存储装置中的信息,关于半导体衬底温度,主电流和感应浓度范围之间的关系。