公开(公告)号：US20140354254A1

公开(公告)日：2014-12-04

申请号：US14288588

申请日：2014-05-28

Applicant: DENSO CORPORATION

Inventor： Fujiyuki IWAMOTO ,  Kazuhiro UMETANI

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H02M3/1588 ,  H02M2001/342 ,  Y02B70/1466 ,  Y02B70/1491

Abstract: A series circuit of a diode Da1, capacitors Ca1, Ca2 and a diode Da2 is connected in parallel to a series circuit of switching elements S1 and S2. A common junction between the capacitors Ca1 and Ca2 is connected to an emitter of the switching element S2. A series circuit of a switching element Sa1 and a diode Da1 is connected between a cathode of the diode Da1 and a cathode of the diode Da2. A series circuit of a diode Da4 and a switching element Sa2 is connected between an anode of the diode Da1 and the ground. A reactor La1 is connected between a source of the switching element Sa1 and a drain of the switching element Sa2.

Abstract translation: 二极管Da1，电容器Ca1，Ca2和二极管Da2的串联电路与开关元件S1和S2的串联电路并联连接。 电容器Ca1和Ca2之间的公共连接点连接到开关元件S2的发射极。 开关元件Sa1和二极管Da1的串联电路连接在二极管Da1的阴极和二极管Da2的阴极之间。 二极管Da1和开关元件Sa2的串联电路连接在二极管Da1的阳极和地之间。 电抗器La1连接在开关元件Sa1的源极和开关元件Sa2的漏极之间。

公开(公告)号：US20180013266A1

公开(公告)日：2018-01-11

申请号：US15645155

申请日：2017-07-10

Applicant: DENSO CORPORATION

Inventor： Fujiyuki IWAMOTO ,  Shunichi TAKEDA

IPC: H01T15/00 ,  H01F38/12 ,  H02H5/04 ,  H03K17/60

Abstract: An ignition device capable of more reliably protecting a primary winding of an ignition coil from high temperature is provided. The ignition device includes an ignition coil, a switching element, a temperature sensor, and a thermal cutout circuit. A primary winding of the ignition coil is connected to a DC power supply and the switching element. The temperature sensor is provided to measure the temperature of the switching element. The thermal cutout circuit forcibly turns off the switching element when the temperature of the switching element becomes higher than a predetermined forcible turn-off temperature Toff. The thermal cutout circuit is configured to lower the forcible turn-off temperature Toff when the power supply voltage Vb of the DC power supply decreases.

公开(公告)号：US20180320652A1

公开(公告)日：2018-11-08

申请号：US15773284

申请日：2016-10-07

Applicant: DENSO CORPORATION

Inventor： Motoo YAMAGUCHI ,  Fujiyuki IWAMOTO ,  Shunichi TAKEDA

IPC: F02P3/055 ,  F02P3/05 ,  H01L23/00 ,  H01L23/62

CPC classification number: F02P3/055 ,  F02P3/04 ,  F02P3/053 ,  F02P15/00 ,  H01L21/822 ,  H01L23/48 ,  H01L23/49548 ,  H01L23/49562 ,  H01L23/49575 ,  H01L23/49589 ,  H01L23/50 ,  H01L23/62 ,  H01L24/42 ,  H01L25/072 ,  H01L25/18 ,  H01L27/04 ,  H01L27/0629 ,  H01L29/866 ,  H01L2224/48137 ,  H01L2224/48195 ,  H01L2224/48247 ,  H01L2224/49111 ,  H01L2224/4917 ,  H01L2924/00014 ,  H01L2924/13055 ,  H01L2924/19105 ,  H01L2924/00 ,  H01L2224/45099

Abstract: An igniter includes a switching element, a control circuit section, and a protection element. The switching element is connected to a primary winding of an ignition coil. The control circuit section is configured to control operation of the switching element. The protection element is configured to electrically protect the control circuit section. The switching element and the protection element are formed in the same semiconductor chip, and are mounted on the same lead frame.

公开(公告)号：US20150288290A1

公开(公告)日：2015-10-08

申请号：US14678229

申请日：2015-04-03

Applicant: DENSO CORPORATION

Inventor： Fujiyuki IWAMOTO ,  Kazuhiro UMETANI

IPC: H02M3/335

CPC classification number: H02M3/1582 ,  B60L7/14 ,  B60L11/1803 ,  B60L11/1861 ,  B60L2210/30 ,  B60L2240/12 ,  B60L2240/547 ,  B60L2240/549 ,  H01F38/02 ,  H02M3/158 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T10/7241

Abstract: In a power conversion apparatus, a secondary winding is connected between main terminals of one of two circuit elements included in a main series circuit, and a voltage applied to a primary winding induces a voltage in a secondary winding in a direction from a first main terminal of a secondary winding, which is disposed at a low-potential side of the main series circuit, toward a second main terminal of a secondary winding, which is disposed at a high-potential side of the main series circuit. A rectifying unit blocks a current flowing from the high-potential side of the main series circuit toward the low-potential side of the main series circuit in a current path that includes the secondary winding and bypasses one of the two circuit elements included in the main series circuit.

Abstract translation: 在功率转换装置中，次级绕组连接在主串联电路中包括的两个电路元件之一的主端子之间，施加到初级绕组的电压在次级绕组中沿着从第一主端子 设置在主串联电路的低电位侧的次级绕组朝向主串联电路的高电位侧的次级绕组的第二主端子。 整流单元在包括次级绕组的电流路径中阻挡从主串联电路的高电位侧朝向主串联电路的低电位侧的电流，并且绕过包含在主串联电路中的两个电路元件中的一个 串联电路。