公开(公告)号：US20240283446A1

公开(公告)日：2024-08-22

申请号：US18648928

申请日：2024-04-29

Applicant: DENSO CORPORATION

Inventor： Yosuke WATANABE

IPC: H03K17/30 ,  H03K17/06

CPC classification number: H03K17/30 ,  H03K17/06 ,  H03K2217/0063 ,  H03K2217/0072

Abstract: A switch driving device for driving an upper arm switch, which is a switch on an upper arm, and a lower arm switch, which is a switch on a lower arm, where the upper arm and lower arm switches are electrically connected in series with each other. In the switch driving device, a determiner is configured to determine, for each of the upper arm and lower arm switches, whether the switch is on or off, and a driver is configured to, in response to the determiner determining that one of the upper arm and lower arm switches is off, turn on the other of the upper arm and lower arm switches. The determiner is further configured to variably set determination parameters for determining whether a respective one of the upper arm and lower arm switches is on or off, according to characteristics of the upper arm and lower arm switches.

公开(公告)号：US20210159897A1

公开(公告)日：2021-05-27

申请号：US17165504

申请日：2021-02-02

Applicant: DENSO CORPORATION

Inventor： Yosuke WATANABE

IPC: H03K17/0812 ,  H02M1/08 ,  H02M7/5387

Abstract: A drive circuit includes a plurality of first control wirings, a plurality of first balance resistors, a first common wiring, a first switch, a plurality of second control wirings, a plurality of second balance resistors, a second common wiring, a second switch, a sensor configured to detect a fault in controlled switches, and a controller configured to control opening and closing of the first switch when the sensor detects no fault, and control opening and closing of the second switch when the sensor detects the fault.

公开(公告)号：US20140218099A1

公开(公告)日：2014-08-07

申请号：US14168388

申请日：2014-01-30

Applicant: DENSO CORPORATION

Inventor： Sho YAMADA ,  Yosuke WATANABE ,  Junichi FUKUTA ,  Tsuneo MAEBARA

IPC: H03K17/60

CPC classification number: H03K17/0412

Abstract: An electronic apparatus is provided which includes switching elements, resonance suppression resistors which have first ends connected to control terminals of the switching elements and second ends having a common connection, an on-drive circuit which has an on-drive resistor and is connected to a drive power circuit, and which is supplied with voltage from the drive power circuit and applies electric charge to the control terminals of the switching elements via the on-drive resistor to turn on the switching elements, and an off-drive circuit which has an off-drive resistor and releases electric charge from the control terminals of the switching elements via the off-drive resistor to turn off the switching elements. A resistance of the off-drive resistor is set to be smaller than a resistance of the resonance suppression resistors. The off-drive circuit releases electric charge from the control terminals of the switching elements not via the resonance suppression resistors.

Abstract translation: 提供一种电子设备，其包括开关元件，谐振抑制电阻器，其具有连接到开关元件的控制端子和具有公共连接的第二端的第一端，驱动电路，其具有驱动电阻器并连接到 驱动电源电路，并且从驱动电源电路提供电压，并且经由驱动电阻器向开关元件的控制端子施加电荷以接通开关元件，以及断开驱动电路 驱动电阻，并通过断开驱动电阻从开关元件的控制端子释放电荷，以关断开关元件。 断开驱动电阻器的电阻被设定为小于谐振抑制电阻器的电阻。 断开驱动电路不通过谐振抑制电阻从开关元件的控制端子释放电荷。

公开(公告)号：US20190393873A1

公开(公告)日：2019-12-26

申请号：US16444678

申请日：2019-06-18

Applicant: DENSO CORPORATION

Inventor： Yosuke WATANABE ,  Tomotaka SUZUKI

IPC: H03K17/567 ,  H05K1/02

Abstract: A switching circuit includes a printed circuit board that supports a switching element, a positive power supply circuit, a negative power supply circuit and a driving circuit thereon. The positive power supply circuit generates a positive voltage relative to a GND potential. The negative power supply circuit generates a negative voltage relative to the GND potential.The driving circuit supplies the gate electrode with the positive voltage and the negative voltage when turn on and off the switching element, respectively. The printed circuit board includes wiring as a conducting path extended from the negative power supply circuit to the gate electrode via the driving circuit. The conducting path includes a negative power supply wiring between the negative power supply circuit and the driving circuit. The negative power supply wiring at least partially includes a negative power supply solid pattern.