Patents by Inventor Keisuke EGUCHI
Keisuke EGUCHI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11942411Abstract: RC-IGBT chips and RC-IGBT chips correspond to a pair of adjacent RC-IGBT chips in an X direction between the RC-IGBT chips. The RC-IGBT chips satisfy a first arrangement condition in which the chips are separately arranged without a bonding point region and a bonding point region overlapping each other in a Y direction, and a second arrangement condition in which, in the Y direction, the chips are arranged to partially overlap so that a part of emitter electrodes excluding the bonding point region and the bonding point region overlap. The RC-IGBT chips also satisfy the first and second arrangement conditions described above.Type: GrantFiled: December 29, 2021Date of Patent: March 26, 2024Assignee: Mitsubishi Electric CorporationInventors: Takamasa Miyazaki, Keisuke Eguchi
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Patent number: 11923673Abstract: A semiconductor device includes: a switching device including a main portion and a current sensing portion for detecting a current value of the main portion; a control IC including a gate drive unit that drives the switching device; a sensing resistor connected between an emitter of the main portion and an emitter of the current sensing portion and formed inside the control IC; a comparator comparing a sense voltage applied to the sensing resistor with a reference voltage; and a shut-down circuit shutting down an energization of the switching device when the sense voltage exceeds the reference voltage, wherein the sense voltage is more than or equal to 1 V when the energization of the switching device is shut down.Type: GrantFiled: March 29, 2022Date of Patent: March 5, 2024Assignee: Mitsubishi Electric CorporationInventors: Keisuke Eguchi, Takamasa Miyazaki
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Publication number: 20230395582Abstract: An object is to provide a technique capable of improving productivity of a semiconductor device by reducing a wiring length of a wire. A semiconductor device includes a semiconductor element and a control IC controlling the semiconductor element, wherein the semiconductor element includes a pair of signal pad groups made up of a plurality of signal pads, the control IC includes a plurality of signal pads, the plurality of signal pads in the control IC are wire-bonding connected to the signal pad group closer to the plurality of signal pads in the control IC in the pair of signal pad groups in the semiconductor element.Type: ApplicationFiled: March 9, 2023Publication date: December 7, 2023Applicant: Mitsubishi Electric CorporationInventors: Keisuke KAWAMOTO, Keisuke EGUCHI
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Patent number: 11735490Abstract: A semiconductor module includes: a dissipating metal plate including a recess provided on an upper surface; an insulating substrate provided on a bottom surface of the recess and including a circuit pattern; a semiconductor device provided on the insulating substrate and connected to the circuit pattern; a case bonded to a peripheral portion on the upper surface of the dissipating metal plate and surrounding the insulating substrate and the semiconductor device; a case electrode provided on the case; a wire connecting the semiconductor device and the case electrode; and a sealant provided in the case and sealing the insulating substrate, the semiconductor device, and the wire, wherein a sidewall of the recess has a taper.Type: GrantFiled: August 9, 2021Date of Patent: August 22, 2023Assignee: Mitsubishi Electric CorporationInventors: Nobuchika Aoki, Yoshitaka Kimura, Keisuke Eguchi
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Patent number: 11680979Abstract: An object is to provide a semiconductor device capable of accurately detecting a temperature of a transistor part and a temperature of the diode part, and improving an overheat protection function. A semiconductor device includes a semiconductor chip having a cell region made up of a plurality of cells including cells corresponding to a transistor part and a diode part, respectively, a temperature detection part detecting a temperature of the transistor part, and a temperature detection part detecting a temperature of the diode part, the temperature detection part is disposed in the cell corresponding to the transistor part, and the temperature detection part is disposed in the cell corresponding to the diode part.Type: GrantFiled: April 28, 2021Date of Patent: June 20, 2023Assignee: Mitsubishi Electric CorporationInventors: Hiroki Hidaka, Keisuke Eguchi, Nobuchika Aoki, Rei Yoneyama
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Publication number: 20230108305Abstract: A semiconductor apparatus includes: an insulating substrate; a plurality of power semiconductor devices arranged in line on the insulating substrate; and a plurality of control semiconductor devices arranged in line on the insulating substrate so as to face the plurality of power semiconductor devices respectively and driving the plurality of power semiconductor devices, wherein the control semiconductor devices at both ends of the plurality of control semiconductor devices arranged in line are arranged closer to the corresponding power semiconductor devices than the control semiconductor devices which are other than the control semiconductor devices at both ends.Type: ApplicationFiled: May 4, 2022Publication date: April 6, 2023Applicant: Mitsubishi Electric CorporationInventors: Takamasa MIYAZAKI, Keisuke EGUCHI
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Publication number: 20230100056Abstract: A semiconductor device includes: a switching device including a main portion and a current sensing portion for detecting a current value of the main portion; a control IC including a gate drive unit that drives the switching device; a sensing resistor connected between an emitter of the main portion and an emitter of the current sensing portion and formed inside the control IC; a comparator comparing a sense voltage applied to the sensing resistor with a reference voltage; and a shut-down circuit shutting down an energization of the switching device when the sense voltage exceeds the reference voltage, wherein the sense voltage is more than or equal to 1 V when the energization of the switching device is shut down.Type: ApplicationFiled: March 29, 2022Publication date: March 30, 2023Applicant: Mitsubishi Electric CorporationInventors: Keisuke EGUCHI, Takamasa MIYAZAKI
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Patent number: 11581307Abstract: The object is to provide a semiconductor device that prevents a snapback operation and has excellent heat dissipation. The semiconductor device includes a semiconductor substrate, transistor portions, diode portions, a surface electrode, and external wiring. The transistor portions and the diode portions are provided in the semiconductor substrate and are arranged in one direction parallel with the surface of the semiconductor substrate. A bonding portion of the external wiring is connected to the surface electrode. The transistor portions and the diode portions are provided in a first region and a second region and alternately arranged in the one direction. A first transistor width and a first diode width in the first region are smaller than a width of the bonding portion. A second transistor width and a second diode width in the second region are larger than the width of the bonding portion.Type: GrantFiled: February 14, 2020Date of Patent: February 14, 2023Assignee: Mitsubishi Electric CorporationInventors: Keisuke Eguchi, Rei Yoneyama, Nobuchika Aoki, Hiroki Hidaka
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Publication number: 20220336429Abstract: A semiconductor device includes: a metal sheet; an insulating pattern provided on the metal sheet; a power circuit pattern and a signal circuit pattern that are provided on the insulating pattern; a power semiconductor chip mounted on the power circuit pattern; and a control semiconductor chip that is mounted on the signal circuit pattern and controls the power semiconductor chip. The power semiconductor chip is bonded to the power circuit pattern with a first die bonding material comprised of copper, and the control semiconductor chip is bonded to the signal circuit pattern with a second die bonding material.Type: ApplicationFiled: January 19, 2022Publication date: October 20, 2022Applicant: Mitsubishi Electric CorporationInventors: Keisuke EGUCHI, Hiroyuki MASUMOTO
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Publication number: 20220319974Abstract: RC-IGBT chips and RC-IGBT chips correspond to a pair of adjacent RC-IGBT chips in an X direction between the RC-IGBT chips. The RC-IGBT chips satisfy a first arrangement condition in which the chips are separately arranged without a bonding point region and a bonding point region overlapping each other in a Y direction, and a second arrangement condition in which, in the Y direction, the chips are arranged to partially overlap so that a part of emitter electrodes excluding the bonding point region and the bonding point region overlap. The RC-IGBT chips also satisfy the first and second arrangement conditions described above.Type: ApplicationFiled: December 29, 2021Publication date: October 6, 2022Applicant: Mitsubishi Electric CorporationInventors: Takamasa MIYAZAKI, Keisuke EGUCHI
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Publication number: 20220270946Abstract: A semiconductor module includes: a dissipating metal plate including a recess provided on an upper surface; an insulating substrate provided on a bottom surface of the recess and including a circuit pattern; a semiconductor device provided on the insulating substrate and connected to the circuit pattern; a case bonded to a peripheral portion on the upper surface of the dissipating metal plate and surrounding the insulating substrate and the semiconductor device; a case electrode provided on the case; a wire connecting the semiconductor device and the case electrode; and a sealant provided in the case and sealing the insulating substrate, the semiconductor device, and the wire, wherein a sidewall of the recess has a taper.Type: ApplicationFiled: August 9, 2021Publication date: August 25, 2022Applicant: Mitsubishi Electric CorporationInventors: Nobuchika AOKI, Yoshitaka KIMURA, Keisuke EGUCHI
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Publication number: 20220213957Abstract: A vehicle drive device includes: a first oil passage that supplies oil discharged from the first hydraulic pump to the second transmission system; a second oil passage that supplies oil discharged from the second hydraulic pump to the first transmission system; a third oil passage that supplies the oil discharged from the second hydraulic pump to the first rotating electrical machine; and a fourth oil passage that supplies the oil discharged from the second hydraulic pump to the second rotating electrical machine.Type: ApplicationFiled: April 15, 2020Publication date: July 7, 2022Applicant: AISIN CORPORATIONInventors: Michihiko YAMADA, Natsuki SADA, Keisuke EGUCHI
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Patent number: 11303203Abstract: The object of the present disclosure is to suppress the conduction noise in a semiconductor device. A semiconductor device includes an inverter section being a full-bridge inverter, and a reflux section that short-circuits between output terminals U and V of the inverter section, in which impedances and are provided between each of freewheel diodes and of the upper arm and the output terminals U and V, and impedances and are provided between the freewheel diodes and of the lower arm and the input terminal N of in the inverter section, and the impedances to are greater than parasitic impedance of wiring assuming that IGBTs to and the output terminals U and V or the IGBTs and the input terminal N are connected only by the wiring.Type: GrantFiled: October 21, 2020Date of Patent: April 12, 2022Assignee: Mitsubishi Electric CorporationInventor: Keisuke Eguchi
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Publication number: 20220065918Abstract: An object is to provide a semiconductor device capable of accurately detecting a temperature of a transistor part and a temperature of the diode part, and improving an overheat protection function. A semiconductor device includes a semiconductor chip having a cell region made up of a plurality of cells including cells corresponding to a transistor part and a diode part, respectively, a temperature detection part detecting a temperature of the transistor part, and a temperature detection part detecting a temperature of the diode part, the temperature detection part is disposed in the cell corresponding to the transistor part, and the temperature detection part is disposed in the cell corresponding to the diode part.Type: ApplicationFiled: April 28, 2021Publication date: March 3, 2022Applicant: Mitsubishi Electric CorporationInventors: Hiroki HIDAKA, Keisuke EGUCHI, Nobuchika AOKI, Rei YONEYAMA
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Patent number: 11183834Abstract: A semiconductor module includes a diode bridge circuit, a sensor configured to measure a current value of the diode bridge circuit, a current limiting circuit having an IGBT connected to the diode bridge circuit, and a protection circuit configured to switch ON and OFF the IGBT in accordance with the current value of the diode bridge circuit measured by the sensor.Type: GrantFiled: June 21, 2019Date of Patent: November 23, 2021Assignee: Mitsubishi Electric CorporationInventors: Nobuchika Aoki, Rei Yoneyama, Keisuke Eguchi, Hiroki Hidaka
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Patent number: 11127696Abstract: An object of the present invention is to provide a semiconductor device suppressing a ringing. A semiconductor device in an embodiment 1 includes an IGBT, an SBD connected to the IGBT in series, a PND connected to the IGBT in series and parallelly connected to the SBD, and an output electrode connected between the IGBT and the SBD and between the IGBT and the PND. An anode electrode of the PND is connected to the output electrode by the wiring via an anode electrode of the SBD.Type: GrantFiled: July 15, 2020Date of Patent: September 21, 2021Assignee: Mitsubishi Electric CorporationInventors: Haruhiko Murakami, Keisuke Eguchi
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Publication number: 20210218328Abstract: The object of the present disclosure is to suppress the conduction noise in a semiconductor device. A semiconductor device includes an inverter section being a full-bridge inverter, and a reflux section that short-circuits between output terminals U and V of the inverter section, in which impedances and are provided between each of freewheel diodes and of the upper arm and the output terminals U and V, and impedances and are provided between the freewheel diodes and of the lower arm and the input terminal N of in the inverter section, and the impedances to are greater than parasitic impedance of wiring assuming that IGBTs to and the output terminals U and V or the IGBTs and the input terminal N are connected only by the wiring.Type: ApplicationFiled: October 21, 2020Publication date: July 15, 2021Applicant: Mitsubishi Electric CorporationInventor: Keisuke EGUCHI
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Publication number: 20210134741Abstract: An object of the s int invention is to provide a semiconductor device suppressing a ringing. A semiconductor device in an embodiment 1 includes an IGBT, an SBD connected to the IGBT in series, a PND connected to the IGBT in series and parallelly connected to the SBD, and an output electrode connected between the IGBT and the SBD and between the IGBT and the PND. An anode electrode of the PND is connected to the output electrode by the wiring via an anode electrode of the SBD.Type: ApplicationFiled: July 15, 2020Publication date: May 6, 2021Applicant: Mitsubishi Electric CorporationInventors: Haruhiko MURAKAMI, Keisuke EGUCHI
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Publication number: 20200343240Abstract: The object is to provide a semiconductor device that prevents a snapback operation and has excellent heat dissipation. The semiconductor device includes a semiconductor substrate, transistor portions, diode portions, a surface electrode, and external wiring. The transistor portions and the diode portions are provided in the semiconductor substrate and are arranged in one direction parallel with the surface of the semiconductor substrate. A bonding portion of the external wiring is connected to the surface electrode. The transistor portions and the diode portions are provided in a first region and a second region and alternately arranged in the one direction. A first transistor width and a first diode width in the first region are smaller than a width of the bonding portion. A second transistor width and a second diode width in the second region are larger than the width of the bonding portion.Type: ApplicationFiled: February 14, 2020Publication date: October 29, 2020Applicant: Mitsubishi Electric CorporationInventors: Keisuke EGUCHI, Rei YONEYAMA, Nobuchika AOKI, Hiroki HIDAKA
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Patent number: 10771053Abstract: First and second switching regions include first and second gate electrodes respectively. Channel currents of the first and second switching regions are controlled according to electric charge amounts supplied by control signals input to the first and second gate electrodes respectively. The second switching region is connected in parallel with the first switching region. A control section outputs a first control signal for turning-on the first switching region to the first gate electrode and a second control signal for turning-on the second switching region to the second gate electrode. The control section stops outputting the second control signal after a first predetermined period elapses from a start of outputting the first and second control signals, and outputs the second control signal after a second predetermined period elapses from a stop of outputting the second control signal.Type: GrantFiled: May 17, 2019Date of Patent: September 8, 2020Assignee: Mitsubishi Electric CorporationInventors: Keisuke Eguchi, Takahiro Inoue, Rei Yoneyama, Shiori Uota, Haruhiko Murakami