Patents by Inventor Motohiro Ando

Motohiro Ando 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).

  • Publication number: 20210119369
    Abstract: A connector 10 disclosed by this specification includes a housing 12 including a busbar 30 and a mounting member to be mounted into the housing 12. The housing 12 includes a first lock portion 38. The mounting member includes a second lock portion 60 to be engaged with the first lock portion 38. The first lock portion 38 is provided on the side of an exposed surface 36 of the busbar 30.
    Type: Application
    Filed: April 10, 2019
    Publication date: April 22, 2021
    Inventor: Motohiro ANDO
  • Publication number: 20210028716
    Abstract: Provided is a semiconductor device that has a configuration provided with: a driving unit for driving an upper switching element and a lower switching element according to a control signal for controlling the driving of the upper switching element and the lower switching element, which are connected in series to constitute a bridge circuit; an insulating unit having an insulating transformer; and a package for sealing at least a part of the insulating unit and the driving unit. The insulating unit transmits a signal corresponding to the control signal to the driving unit side while insulating the signal.
    Type: Application
    Filed: September 29, 2020
    Publication date: January 28, 2021
    Inventor: Motohiro ANDO
  • Patent number: 10897254
    Abstract: A power semiconductor drive circuit includes a parallel circuit connected to a gate of a power semiconductor element and constituted by two transistors for setting gate resistance of the power semiconductor element; a gate voltage monitoring circuit connected to the gate of the power semiconductor element and the parallel circuit, wherein a monitoring voltage is set in the gate voltage monitoring circuit to monitor a gate voltage of the power semiconductor element; a signal delay circuit to delay an output signal of the gate voltage monitoring circuit; and a gate control circuit to change the magnitude of combined resistance of the parallel circuit based on an output signal output from the signal delay circuit.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: January 19, 2021
    Assignee: Rohm Co., Ltd.
    Inventors: Yuji Ishimatsu, Motohiro Ando
  • Patent number: 10833595
    Abstract: Provided is a semiconductor device that has a configuration provided with: a driving unit for driving an upper switching element and a lower switching element according to a control signal for controlling the driving of the upper switching element and the lower switching element, which are connected in series to constitute a bridge circuit; an insulating unit having an insulating transformer; and a package for sealing at least a part of the insulating unit and the driving unit. The insulating unit transmits a signal corresponding to the control signal to the driving unit side while insulating the signal.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: November 10, 2020
    Assignee: ROHM CO., LTD.
    Inventor: Motohiro Ando
  • Publication number: 20200274290
    Abstract: A connector, including a terminal; and a housing to which the terminal is fixed, wherein the terminal includes: a plate-like first connection; a holder projecting in one direction intersecting the first connection from a side edge of the first connection; and a second connection projecting in the one direction from a side edge of the first connection and facing the holder, the holder and the second connection being fixed in the housing.
    Type: Application
    Filed: October 24, 2018
    Publication date: August 27, 2020
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Motohiro ANDO
  • Publication number: 20190305689
    Abstract: Provided is a semiconductor device that has a configuration provided with: a driving unit for driving an upper switching element and a lower switching element according to a control signal for controlling the driving of the upper switching element and the lower switching element, which are connected in series to constitute a bridge circuit; an insulating unit having an insulating transformer; and a package for sealing at least a part of the insulating unit and the driving unit. The insulating unit transmits a signal corresponding to the control signal to the driving unit side while insulating the signal.
    Type: Application
    Filed: June 28, 2017
    Publication date: October 3, 2019
    Inventor: Motohiro ANDO
  • Publication number: 20190165783
    Abstract: A power semiconductor drive circuit includes a parallel circuit connected to a gate of a power semiconductor element and constituted by two transistors for setting gate resistance of the power semiconductor element; a gate voltage monitoring circuit connected to the gate of the power semiconductor element and the parallel circuit, wherein a monitoring voltage is set in the gate voltage monitoring circuit to monitor a gate voltage of the power semiconductor element; a signal delay circuit to delay an output signal of the gate voltage monitoring circuit; and a gate control circuit to change the magnitude of combined resistance of the parallel circuit based on an output signal output from the signal delay circuit.
    Type: Application
    Filed: January 31, 2019
    Publication date: May 30, 2019
    Applicant: Rohm Co., Ltd.
    Inventors: Yuji Ishimatsu, Motohiro Ando
  • Publication number: 20190157788
    Abstract: A terminal fitting includes an electric contact member (20) which has a facing surface (21) facing a contact surface (81) disposed on a counterpart terminal (80) and is connected to an external circuit. An obliquely wound coil spring (40) has an electroconductive wire member (41) wound a plurality of times so that the winding surface is oblique with respect to a coil axis L. Both ends of the electroconductive wire member (41) are fixed to the electric contact member (20) in such an attitude that the coil axis L is parallel to the facing surface (21) of the electric contact member (20), and the obliquely wound coil spring (40) is to be sandwiched between the counterpart terminal (80) and the electric contact member (20) when the counterpart terminal (80) and the electric contact member (20) come close to each other.
    Type: Application
    Filed: November 28, 2016
    Publication date: May 23, 2019
    Inventors: Motohiro Ando, Akio Kimura, Kyohei Ida
  • Patent number: 10224929
    Abstract: A power semiconductor drive circuit includes a parallel circuit connected to a gate of a power semiconductor element and constituted by two transistors for setting gate resistance of the power semiconductor element; a gate voltage monitoring circuit connected to the gate of the power semiconductor element and the parallel circuit, wherein a monitoring voltage is set in the gate voltage monitoring circuit to monitor a gate voltage of the power semiconductor element; a signal delay circuit to delay an output signal of the gate voltage monitoring circuit; and a gate control circuit to change the magnitude of combined resistance of the parallel circuit based on an output signal output from the signal delay circuit.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: March 5, 2019
    Assignee: Rohm Co., Ltd.
    Inventors: Yuji Ishimatsu, Motohiro Ando
  • Publication number: 20170310323
    Abstract: A power semiconductor drive circuit includes a parallel circuit connected to a gate of a power semiconductor element and constituted by two transistors for setting gate resistance of the power semiconductor element; a gate voltage monitoring circuit connected to the gate of the power semiconductor element and the parallel circuit, wherein a monitoring voltage is set in the gate voltage monitoring circuit to monitor a gate voltage of the power semiconductor element; a signal delay circuit to delay an output signal of the gate voltage monitoring circuit; and a gate control circuit to change the magnitude of combined resistance of the parallel circuit based on an output signal output from the signal delay circuit.
    Type: Application
    Filed: July 11, 2017
    Publication date: October 26, 2017
    Inventors: Yuji ISHIMATSU, Motohiro ANDO
  • Patent number: 9735513
    Abstract: A shielded shell and a shielded connector that prevents a fixing member for fixing a shielding member from interfering with another member such as a grommet. A shielding member such as a braided wire is placed on the outer circumferential surface of a shielded shell and fixed by the fixing member. The outer circumferential surface of the shielded shell is provided with a step portion that increases in diameter from the rear portion, at which a fixing region of the shielding member is positioned, toward a front portion, and is provided with position restriction portions that protrude outward from portions of the outer circumferential surface in the circumferential direction and restrict the position of the front end of the fixing member that is to be attached to the fixing region.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: August 15, 2017
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Hirokazu Nakai, Motohiro Ando
  • Patent number: 9729150
    Abstract: A power semiconductor drive circuit includes a parallel circuit connected to a gate of a power semiconductor element and constituted by two transistors for setting gate resistance of the power semiconductor element; a gate voltage monitoring circuit connected to the gate of the power semiconductor element and the parallel circuit, wherein a monitoring voltage is set in the gate voltage monitoring circuit to monitor a gate voltage of the power semiconductor element; a signal delay circuit to delay an output signal of the gate voltage monitoring circuit; and a gate control circuit to change the magnitude of combined resistance of the parallel circuit based on an output signal output from the signal delay circuit.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: August 8, 2017
    Assignee: Rohm Co., Ltd.
    Inventors: Yuji Ishimatsu, Motohiro Ando
  • Publication number: 20170170609
    Abstract: A shielded shell and a shielded connector that prevents a fixing member for fixing a shielding member from interfering with another member such as a grommet. A shielding member such as a braided wire is placed on the outer circumferential surface of a shielded shell and fixed by the fixing member. The outer circumferential surface of the shielded shell is provided with a step portion that increases in diameter from the rear portion, at which a fixing region of the shielding member is positioned, toward a front portion, and is provided with position restriction portions that protrude outward from portions of the outer circumferential surface in the circumferential direction and restrict the position of the front end of the fixing member that is to be attached to the fixing region.
    Type: Application
    Filed: December 7, 2016
    Publication date: June 15, 2017
    Inventors: Hirokazu NAKAI, Motohiro ANDO
  • Patent number: 9379496
    Abstract: A connector (10) includes a capacitor (30) with a capacitor main body (31) extending in a front-back direction and two lead wires (32) extending forward from the front end of the capacitor main body (31). Busbars (50, 60) are arranged before the capacitor (30) and have two electronic component connecting portions (55, 65) to be connected to the lead wires (32). The connector (10) also has a housing with a forwardly open insertion opening (21) into which the capacitor (30) and the busbars (50, 60) are insertable so that the busbars (50, 60) are held. An electronic component holding portion (43) is provided in the housing and includes resiliently deflectable pieces (44) that are configured to clamp the capacitor main body (31) in a deflected state.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: June 28, 2016
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Tsutomu Hashimoto, Motohiro Ando
  • Publication number: 20160105175
    Abstract: A power semiconductor drive circuit includes a parallel circuit connected to a gate of a power semiconductor element and constituted by two transistors for setting gate resistance of the power semiconductor element; a gate voltage monitoring circuit connected to the gate of the power semiconductor element and the parallel circuit, wherein a monitoring voltage is set in the gate voltage monitoring circuit to monitor a gate voltage of the power semiconductor element; a signal delay circuit to delay an output signal of the gate voltage monitoring circuit; and a gate control circuit to change the magnitude of combined resistance of the parallel circuit based on an output signal output from the signal delay circuit.
    Type: Application
    Filed: October 7, 2015
    Publication date: April 14, 2016
    Inventors: Yuji ISHIMATSU, Motohiro ANDO
  • Patent number: 9270111
    Abstract: The load drive device of the present invention comprises a load drive unit for switching on/off output current that flows to an inductive load; and an overcurrent protection circuit for detecting whether the output current is in an overcurrent state, wherein the load drive unit has an output transistor connected to one end of the inductive load; and a pre-driver for generating a control signal of the output transistor in accordance with an input signal, and the pre-driver has a first drive unit for switching on/off the output transistor during normal operation; and a second drive unit for switching off the output transistor more slowly than the first drive unit during overcurrent protection operation.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: February 23, 2016
    Assignee: Rohm Co., Ltd.
    Inventors: Motohiro Ando, Akio Sasabe
  • Patent number: 9225124
    Abstract: A connector includes an electronic component (60), a holder (20) for holding the electronic component (60), a housing (10) including an insertion opening (11), into which the holder (20) is insertable and which is open only in one direction, and configured to accommodate the holder (20) holding the electronic component (60), and conductive members (40) for conductively connecting the electronic component (60) and mating terminal fittings. The conductive members (40) include holder press-fit portions (51, 53) to be press-fitted into the holder (20) and housing press-fit portions (55) to be press-fitted into the housing (10) and the holder (20) is held in the housing (10) by the conductive members (40).
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: December 29, 2015
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Motohiro Ando, Tomoyuki Kondo
  • Patent number: 9013849
    Abstract: A ground protection circuit (36) includes: a sensing resistor (R3), disposed on a path which a charging current (IB) of a bootstrap circuit (D1, C1) flows through; a comparator (361), for comparing a voltage (?V) between two ends of the sensing resistor (R3) and a specific threshold voltage (Vth) to generate a ground protection signal (S1); and a logic gate (362), for enabling the ground protection signal (S1) to be invalid in a normal charging operation of the bootstrap circuit.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: April 21, 2015
    Assignee: Rohm Co., Ltd.
    Inventor: Motohiro Ando
  • Publication number: 20140357127
    Abstract: A connector (10) includes a capacitor (30) with a capacitor main body (31) extending in a front-back direction and two lead wires (32) extending forward from the front end of the capacitor main body (31). Busbars (50, 60) are arranged before the capacitor (30) and have two electronic component connecting portions 55, (65) to be connected to the lead wires (32). The connector (10) also has a housing with a forwardly open insertion opening (21) into which the capacitor (30) and the busbars (50, 60) are insertable so that the busbars (50, 60) are held. An electronic component holding portion (43) is provided in the housing and includes resiliently deflectable pieces (44) that are configured to clamp the capacitor main body (31) in a deflected state.
    Type: Application
    Filed: May 14, 2014
    Publication date: December 4, 2014
    Applicant: Sumitomo Wiring Systems, Ltd.
    Inventors: Tsutomu Hashimoto, Motohiro Ando
  • Publication number: 20140220823
    Abstract: A connector includes an electronic component (60), a holder (20) for holding the electronic component (60), a housing (10) including an insertion opening (11), into which the holder (20) is insertable and which is open only in one direction, and configured to accommodate the holder (20) holding the electronic component (60), and conductive members (40) for conductively connecting the electronic component (60) and mating terminal fittings. The conductive members (40) include holder press-fit portions (51, 53) to be press-fitted into the holder (20) and housing press-fit portions (55) to be press-fitted into the housing (10) and the holder (20) is held in the housing (10) by the conductive members (40).
    Type: Application
    Filed: February 4, 2014
    Publication date: August 7, 2014
    Applicant: Sumitomo Wiring Systems, Ltd.
    Inventors: Motohiro Ando, Tomoyuki Kondo