公开(公告)号：US20130083442A1

公开(公告)日：2013-04-04

申请号：US13479853

申请日：2012-05-24

申请人： Kazuaki HIYAMA

发明人： Kazuaki HIYAMA

IPC分类号： H02H3/08

CPC分类号： H03K17/0828

摘要： A semiconductor device includes a sense resistor that converts a sense current flowing through a sense terminal of a switching element to a voltage (sense voltage), and an overcurrent protection circuit that performs a protection operation for the switching element when the sense voltage exceeds a threshold. The overcurrent protection circuit can switch the threshold to a first reference voltage, or to a second reference voltage which is lower than the first reference voltage. The overcurrent protection circuit sets the threshold to the second reference voltage at the time of the switching element being in a steady state, and sets the threshold to the first reference voltage during a mirror period immediately after turning-on of the switching element.

摘要翻译： 半导体器件包括：检测电阻器，其将流过开关元件的感测端子的感测电流转换为电压（感测电压）;以及过电流保护电路，当感测电压超过阈值时，对开关元件执行保护操作 。 过电流保护电路可以将阈值切换到第一参考电压或低于第一参考电压的第二参考电压。 过电流保护电路在开关元件处于稳定状态时将阈值设置为第二参考电压，并且在开关元件接通之后的镜像周期期间将阈值设置为第一参考电压。

公开(公告)号：US20100148846A1

公开(公告)日：2010-06-17

申请号：US12713634

申请日：2010-02-26

申请人： Kazuaki HIYAMA

发明人： Kazuaki HIYAMA

IPC分类号： H03K17/04

CPC分类号： H03K17/168 ,  H03K17/08128 ,  H03K17/163 ,  H03K17/284 ,  H03K17/567 ,  H03K17/74 ,  H03K2217/0036

摘要： A gate drive circuit includes a turn-on side circuit for turning on a gate of a power switching device, the turn-on side circuit including a first turn-on side power supply circuit and a second turn-on side power supply circuit, the first turn-on side power supply circuit including: a first turn-on voltage source for supplying a first turn-on voltage; first turn-on wiring; and a first turn-on switch connected in the first turn-on wiring and controlled by a gate drive signal; and the second turn-on side power supply circuit including: a second turn-on voltage source for supplying a second turn-on voltage applied to the gate of the power switching device to set the power switching device in a steady (on) state; second turn-on wiring; a second turn-on switch connected in the second turn-on wiring; and a turn-on side delay circuit for delaying the gate drive signal and passing it to the second turn-on switch.

摘要翻译： 栅极驱动电路包括用于接通电源开关器件的栅极的导通侧电路，该导通侧电路包括第一接通侧电源电路和第二接通侧电源电路， 第一开启侧电源电路，包括：用于提供第一导通电压的第一导通电压源; 第一次接通电线; 以及第一导通开关，其连接在所述第一导通布线中并由栅极驱动信号控制; 所述第二接通侧电源电路包括：第二导通电压源，用于提供施加到所述电力开关装置的栅极的第二接通电压，以将所述电力开关装置设定在稳定（接通）状态; 第二次接通电线; 第二导通开关连接在第二导通布线中; 以及用于延迟栅极驱动信号并将其传递到第二导通开关的导通侧延迟电路。

公开(公告)号：US20150318850A1

公开(公告)日：2015-11-05

申请号：US14651627

申请日：2012-12-21

申请人： Kazuaki HIYAMA

发明人： Kazuaki HIYAMA

IPC分类号： H03K17/687 ,  H02P6/14 ,  H03K17/04

CPC分类号： H03K17/687 ,  H02M1/08 ,  H02M1/32 ,  H02M7/003 ,  H02M7/5387 ,  H02M2001/0012 ,  H02P6/14 ,  H03K17/04 ,  H03K17/163 ,  H03K17/166

摘要： A switching element drive circuit of the present invention outputs a voltage to the switching element by use of a voltage output unit configured as an amplifier circuit having a voltage amplification factor of 1 to drive the switching element. When the switching element is turned on, a turn-on voltage having a value higher than a threshold voltage of the switching element and lower than a value of a voltage of a power supply of the switching element drive circuit is provided to the voltage output unit. After elapse of a turn-on voltage maintenance period, a voltage provided to the voltage output unit is switched by a voltage switching unit to the voltage of the power supply of the switching element drive circuit.

摘要翻译： 本发明的开关元件驱动电路通过使用配置为电压放大率为1的放大电路的电压输出单元向开关元件输出电压来驱动开关元件。 当开关元件导通时，具有比开关元件的阈值电压高的值低于开关元件驱动电路的电源的电压值的导通电压被提供给电压输出单元 。 在经过导通电压维持期后，通过电压切换单元将提供给电压输出单元的电压切换到开关元件驱动电路的电源的电压。

公开(公告)号：US20120032725A1

公开(公告)日：2012-02-09

申请号：US13097389

申请日：2011-04-29

申请人： Kazuaki HIYAMA

发明人： Kazuaki HIYAMA

IPC分类号： H03K17/16

CPC分类号： H03K17/08148 ,  H01L2224/45124 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01L2224/48139 ,  H01L2224/49175 ,  H01L2224/73265 ,  H01L2924/1305 ,  H01L2924/13055 ,  H01L2924/13091 ,  H01L2924/19107 ,  H01L2924/30107 ,  H03K17/12 ,  H03K17/168 ,  H01L2924/00014 ,  H01L2924/00

摘要： A power module comprises: first and second terminals; first and second switching elements having a first electrode and a second electrode which is connected to the second terminal; first and second wirings respectively connecting the first electrodes of the first and second switching elements to the first terminal; and a third wiring directly connecting the first electrode of the first switching element to the first electrode of the second switching element, wherein parasitic inductances of the first and second wiring are different or switching characteristics of the first and second switching elements are different.

摘要翻译： 电源模块包括：第一和第二终端; 第一和第二开关元件具有连接到第二端子的第一电极和第二电极; 分别将第一和第二开关元件的第一电极连接到第一端子的第一和第二布线; 以及将第一开关元件的第一电极直接连接到第二开关元件的第一电极的第三布线，其中第一和第二布线的寄生电感不同或第一和第二开关元件的开关特性不同。

公开(公告)号：US20090066402A1

公开(公告)日：2009-03-12

申请号：US12027616

申请日：2008-02-07

申请人： Kazuaki HIYAMA

发明人： Kazuaki HIYAMA

IPC分类号： H03K17/28

CPC分类号： H03K17/168 ,  H03K17/08128 ,  H03K17/163 ,  H03K17/284 ,  H03K17/567 ,  H03K17/74 ,  H03K2217/0036

摘要： A gate drive circuit includes a turn-on side circuit for turning on a gate of a power switching device, the turn-on side circuit including a first turn-on side power supply circuit and a second turn-on side power supply circuit, the first turn-on side power supply circuit including: a first turn-on voltage source for supplying a first turn-on voltage; first turn-on wiring; and a first turn-on switch connected in the first turn-on wiring and controlled by a gate drive signal; and the second turn-on side power supply circuit including: a second turn-on voltage source for supplying a second turn-on voltage applied to the gate of the power switching device to set the power switching device in a steady (on) state; second turn-on wiring; a second turn-on switch connected in the second turn-on wiring; and a turn-on side delay circuit for delaying the gate drive signal and passing it to the second turn-on switch.

摘要翻译： 栅极驱动电路包括用于接通电源开关器件的栅极的导通侧电路，该导通侧电路包括第一接通侧电源电路和第二接通侧电源电路， 第一开启侧电源电路，包括：用于提供第一导通电压的第一导通电压源; 第一次接通电线; 以及第一导通开关，其连接在所述第一导通布线中并由栅极驱动信号控制; 所述第二接通侧电源电路包括：第二导通电压源，用于提供施加到所述电力开关装置的栅极的第二接通电压，以将所述电力开关装置设定在稳定（接通）状态; 第二次接通电线; 第二导通开关连接在第二导通布线中; 以及用于延迟栅极驱动信号并将其传递到第二导通开关的导通侧延迟电路。

公开(公告)号：US20080297964A1

公开(公告)日：2008-12-04

申请号：US11933741

申请日：2007-11-01

申请人： Kazuaki HIYAMA

发明人： Kazuaki HIYAMA

IPC分类号： H02H9/04

CPC分类号： H03K17/168 ,  H02M1/088 ,  H03K17/567 ,  H03K17/6871 ,  Y10T307/747

摘要： A first bypass circuit has first and second nodes. The first load circuit is connected between the first node and a signal input terminal of the second drive circuit. The second load circuit has substantially the same impedance as the first load circuit, and is connected between the second node and the reference potential terminal of the second drive circuit. The first drive circuit has the same reference potential as the input buffer. The second bypass circuit passes a signal of a predetermined frequency or higher between a current path formed between the first load circuit and the signal input terminal of the second drive circuit and a current path formed between the second load circuit and the reference potential terminal of the second drive circuit. The first bypass circuit passes a signal of a predetermined frequency or higher between the first and second nodes.

摘要翻译： 第一旁路电路具有第一和第二节点。 第一负载电路连接在第一节点和第二驱动电路的信号输入端子之间。 第二负载电路具有与第一负载电路基本相同的阻抗，并且连接在第二节点和第二驱动电路的参考电位端子之间。 第一驱动电路具有与输入缓冲器相同的参考电位。 第二旁通电路在第一负载电路和第二驱动电路的信号输入端之间形成的电流路径和形成在第二负载电路与第二负载电路的参考电位端子之间的电流路径之间通过预定频率以上的信号 第二驱动电路。 第一旁路电路在第一和第二节点之间传递预定频率或更高频率的信号。