Patents by Inventor Shingo Tomioka

Shingo Tomioka 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).

  • Semiconductor device and method of manufacturing semiconductor device
    Patent number: 11610873
    Abstract: An object of the present disclosure is to provide a semiconductor device capable of confirming withstand voltage of a snubber circuit after providing the snubber circuit and a method of manufacturing the semiconductor device. A semiconductor device according to the present disclosure includes: an insulating substrate; a circuit patterns provided on the insulating substrate; a snubber circuit substrate provided on the insulating substrate separately from the circuit patterns; a resistance provided on one of the circuit patterns and the snubber circuit substrate; a capacitor provided on another one of the circuit patterns and the snubber circuit substrate; and at least one semiconductor element electrically connected to the resistance and the capacitor.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: March 21, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Ryo Goto, Takami Otsuki, Yasutaka Shimizu, Shingo Tomioka
  • SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE
    Publication number: 20210249389
    Abstract: An object of the present disclosure is to provide a semiconductor device capable of confirming withstand voltage of a snubber circuit after providing the snubber circuit and a method of manufacturing the semiconductor device. A semiconductor device according to the present disclosure includes: an insulating substrate; a circuit patterns provided on the insulating substrate; a snubber circuit substrate provided on the insulating substrate separately from the circuit patterns; a resistance provided on one of the circuit patterns and the snubber circuit substrate; a capacitor provided on another one of the circuit patterns and the snubber circuit substrate; and at least one semiconductor element electrically connected to the resistance and the capacitor.
    Type: Application
    Filed: October 23, 2020
    Publication date: August 12, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Ryo GOTO, Takami OTSUKI, Yasutaka SHIMIZU, Shingo TOMIOKA
  • Power module in which protection for switching element varies in dependence on active operation of the switching element
    Patent number: 8674728
    Abstract: A power module includes: a drive circuit for driving an IGBT of a semiconductor element; a protection circuit for performing operation for protection of the IGBT if the collector current of the IGBT has reached a trip level; and a control power source voltage detection circuit for detecting a control power source voltage to be supplied to the drive circuit. The protection circuit changes a sense resistor from a resistor to a series circuit with resistors and if the control power source voltage drops to a level lower than a predetermined value, thereby lowering the trip level.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: March 18, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Naohiro Sogo, Shingo Tomioka, Shinichi Sunaoku
  • POWER MODULE
    Publication number: 20130063188
    Abstract: A power module includes: a drive circuit for driving an IGBT of a semiconductor element; a protection circuit for performing operation for protection of the IGBT if the collector current of the IGBT has reached a trip level; and a control power source voltage detection circuit for detecting a control power source voltage to be supplied to the drive circuit. The protection circuit changes a sense resistor from a resistor to a series circuit with resistors and if the control power source voltage drops to a level lower than a predetermined value, thereby lowering the trip level.
    Type: Application
    Filed: May 11, 2012
    Publication date: March 14, 2013
    Applicant: Mitsubishi Electric Corporation
    Inventors: Naohiro Sogo, Shingo Tomioka, Shinichi Sunaoku