Patents by Inventor Nobumasa Ueda
Nobumasa Ueda 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: 10985636Abstract: A semiconductor device includes: a plurality of control modules that controls a rotating electric machine. Each control module includes at least two sets of arms, each set including high-side and low-side switching elements that provide an inverter. A plurality of arms of each control module are coupled in parallel to each other with respect to a bus bar coupled to one power source. Each control module includes a metal plate on which the high-side and low-side switching elements are mounted, and mediates an electric coupling with the power source. Each metal plate includes a first metal plate on which one set of arms is disposed, a second metal plate on which another set of arms is disposed, and a coupling plate that couples the first and second metal plates.Type: GrantFiled: April 26, 2019Date of Patent: April 20, 2021Assignee: DENSO CORPORATIONInventors: Masayoshi Nishihata, Nobumasa Ueda, Hiroki Kiyose
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Patent number: 10797569Abstract: A semiconductor device includes: a plurality of control modules to control a rotating electric machine. The plurality of control modules are circularly arranged around a rotary shaft of the rotating electric machine. Each control module includes at least one switching element supplied with a current from a bus bar coupled to a power source. The at least one switching element in one of the control modules under a structural condition of arrangement has a lower resistance than another switching element.Type: GrantFiled: April 25, 2019Date of Patent: October 6, 2020Assignee: DENSO CORPORATIONInventors: Masayoshi Nishihata, Nobumasa Ueda, Hiroki Kiyose
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Publication number: 20190260274Abstract: A semiconductor device includes: a plurality of control modules to control a rotating electric machine. The plurality of control modules are circularly arranged around a rotary shaft of the rotating electric machine. Each control module includes at least one switching element supplied with a current from a bus bar coupled to a power source. The at least one switching element in one of the control modules under a structural condition of arrangement has a lower resistance than another switching element.Type: ApplicationFiled: April 25, 2019Publication date: August 22, 2019Inventors: Masayoshi NISHIHATA, Nobumasa UEDA, Hiroki KIYOSE
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Publication number: 20190252954Abstract: A semiconductor device includes: a plurality of control modules that controls a rotating electric machine. Each control module includes at least two sets of arms, each set including high-side and low-side switching elements that provide an inverter. A plurality of arms of each control module are coupled in parallel to each other with respect to a bus bar coupled to one power source. Each control module includes a metal plate on which the high-side and low-side switching elements are mounted, and mediates an electric coupling with the power source. Each metal plate includes a first metal plate on which one set of arms is disposed, a second metal plate on which another set of arms is disposed, and a coupling plate that couples the first and second metal plates.Type: ApplicationFiled: April 26, 2019Publication date: August 15, 2019Inventors: Masayoshi NISHIHATA, Nobumasa UEDA, Hiroki KIYOSE
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Patent number: 8593092Abstract: A control system controls a multiphase rotating machine by a 120° energization process and a PWM process. In the 120° energization process, respective ones of switching elements of a high side arm and switching elements of a low side arm of a power conversion circuit are turned on. In the PWM process, the switching elements of the power conversion circuit turn on/off so that two phases that are connected to the switching elements that are in the on-state are alternately rendered conductive to the high potential side input terminal and the low potential side input terminal of the power conversion circuit.Type: GrantFiled: February 6, 2013Date of Patent: November 26, 2013Assignee: DENSO CORPORATIONInventors: Masahiro Kuroda, Nobumasa Ueda, Kiyoshi Nagata, Masaya Ootake, Sadahiro Akama
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Patent number: 8489266Abstract: A vehicle power system is provided with a switching power supply that generates an operation power for operating a plurality of ECU by stepping down a power supply supplied from at least one of a generator and a battery, and a power distributor that distributes and supplies the operation power generated by the switching power supply to the individual ECUs.Type: GrantFiled: March 17, 2011Date of Patent: July 16, 2013Assignee: Denso CorporationInventors: Nobumasa Ueda, Naoki Yamamoto, Yuji Hayashi, Yuuki Tsutsu, Takuto Suzuki
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Patent number: 8417418Abstract: A control circuit board has a plurality of connectors that can connect each control module circuit board to control a plurality of in-vehicle equipment. A power supply circuit board has a power supply circuit that controls a power supply from a battery to a controlled equipment of the control module circuit boards connected with each connector. The control circuit board and the power supply circuit board are electrically connected and accommodated in a case. When the control module circuit boards are connected with any connector of the control circuit board, the power supply circuit is controlled by the control module and it becomes possible to control the controlled equipment such as engines.Type: GrantFiled: March 17, 2011Date of Patent: April 9, 2013Assignee: Denso CorporationInventors: Yasushi Matsumura, Eiichi Kamei, Nobumasa Ueda, Dai Ito
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Patent number: 8395338Abstract: A control system controls a multiphase rotating machine by a 120° energization process and a PWM process. In the 120° energization process, respective ones of switching elements of a high side arm and switching elements of a low side arm of a power conversion circuit are turned on. In the PWM process, the switching elements of the power conversion circuit turn on/off so that two phases that are connected to the switching elements that are in the on-state are alternately rendered conductive to the high potential side input terminal and the low potential side input terminal of the power conversion circuit.Type: GrantFiled: December 16, 2008Date of Patent: March 12, 2013Assignee: DENSO CORPORATIONInventors: Masahiro Kuroda, Hiroshi Taki, Nobumasa Ueda
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Patent number: 8217603Abstract: A motor driving apparatus has a loss-of-synchronism monitoring circuit that monitors the rotation of a rotary machine such as a brushless DC motor to detect a sign of transition to a state of loss of synchronism. When the sign is detected, an energization control circuit temporarily stops driving of the rotary machine to bring it into a free running state, and thereafter carries out control so as to resume driving of the rotary machine. Further, the motor driving apparatus has an inverter and a drive control circuit that controls switching operation of the inverter based on rotation of the rotary machine.Type: GrantFiled: November 24, 2010Date of Patent: July 10, 2012Assignee: DENSO CORPORATIONInventors: Sadahiro Akama, Shuji Agatsuma, Nobumasa Ueda, Masahiro Kuroda, Kiyoshi Nagata, Masaya Ootake
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Publication number: 20110231032Abstract: A control circuit board has a plurality of connectors that can connect each control module circuit board to control a plurality of in-vehicle equipment. A power supply circuit board has a power supply circuit that controls a power supply from a battery to a controlled equipment of the control module circuit boards connected with each connector. The control circuit board and the power supply circuit board are electrically connected and accommodated in a case. When the control module circuit boards are connected with any connector of the control circuit board, the power supply circuit is controlled by the control module and it becomes possible to control the controlled equipment such as engines.Type: ApplicationFiled: March 17, 2011Publication date: September 22, 2011Applicant: DENSO CORPORATIONInventors: Yasushi Matsumura, Eiichi Kamei, Nobumasa Ueda, Dai Ito
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Publication number: 20110231042Abstract: A vehicle power system is provided with a switching power supply that generates an operation power for operating a plurality of ECU by stepping down a power supply supplied from at least one of a generator and a battery, and a power distributor that distributes and supplies the operation power generated by the switching power supply to the individual ECUs.Type: ApplicationFiled: March 17, 2011Publication date: September 22, 2011Applicant: DENSO CORPORATIONInventors: Nobumasa UEDA, Naoki Yamamoto, Yuji Hayashi, Yuuki Tsutsu, Takuto Suzuki
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Publication number: 20110080127Abstract: A motor driving apparatus has a loss-of-synchronism monitoring circuit that monitors the rotation of a rotary machine such as a brushless DC motor to detect a sign of transition to a state of loss of synchronism. When the sign is detected, an energization control circuit temporarily stops driving of the rotary machine to bring it into a free running state, and thereafter carries out control so as to resume driving of the rotary machine. Further, the motor driving apparatus has an inverter and a drive control circuit that controls switching operation of the inverter based on rotation of the rotary machine.Type: ApplicationFiled: November 24, 2010Publication date: April 7, 2011Applicant: DENSO CORPORATIONInventors: Sadahiro Akama, Shuji Agatsuma, Nobumasa Ueda, Masahiro Kuroda, Kiyoshi Nagata, Masaya Ootake
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Patent number: 7893638Abstract: A motor driving apparatus has a loss-of-synchronism monitoring circuit that monitors the rotation of a rotary machine such as a brushless DC motor to detect a sign of transition to a state of loss of synchronism. When the sign is detected, an energization control circuit temporarily stops driving of the rotary machine to bring it into a free running state, and thereafter carries out control so as to resume driving of the rotary machine. Further, the motor driving apparatus has an inverter and a drive control circuit that controls switching operation of the inverter based on rotation of the rotary machine.Type: GrantFiled: October 31, 2007Date of Patent: February 22, 2011Assignee: DENSO CORPORATIONInventors: Sadahiro Akama, Shuji Agatsuma, Nobumasa Ueda, Masahiro Kuroda, Kiyoshi Nagata, Masaya Ootake
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Publication number: 20090174350Abstract: A control system controls a multiphase rotating machine by a 120° energization process and a PWM process. In the 120° energization process, respective ones of switching elements of a high side arm and switching elements of a low side arm of a power conversion circuit are turned on. In the PWM process, the switching elements of the power conversion circuit turn on/off so that two phases that are connected to the switching elements that are in the on-state are alternately rendered conductive to the high potential side input terminal and the low potential side input terminal of the power conversion circuit.Type: ApplicationFiled: December 16, 2008Publication date: July 9, 2009Applicant: DENSO CORPORATIONInventors: Masahiro Kuroda, Hiroshi Taki, Nobumasa Ueda, Sadahiro Akama, Kiyoshi Nagata, Masaya Ootake
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Patent number: 7531852Abstract: In an electronic unit with a substrate, a control circuit is mounted on the substrate and is configured to execute an operation related to a load. A package encapsulates the control circuit and the substrate. The package has sides around a periphery of the substrate. At least one input terminal for input of a signal externally sent to the electronic unit is disposed on at least one of the plurality of surfaces. At least one output terminal for output of a control signal for controlling the load is disposed on at least another one of the plurality of surfaces. At least one check terminal for input/output of a signal for checking at least the control circuit is disposed on at least another one of the plurality of surfaces.Type: GrantFiled: June 14, 2005Date of Patent: May 12, 2009Assignee: DENSO CORPORATIONInventors: Nobumasa Ueda, Hirokazu Kasuya, Koji Numazaki, Yutaka Fukuda, Mitsuhiro Saitou
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Publication number: 20080252242Abstract: A motor driving apparatus has a loss-of-synchronism monitoring circuit that monitors the rotation of a rotary machine such as a brushless DC motor to detect a sign of transition to a state of loss of synchronism. When the sign is detected, an energization control circuit temporarily stops driving of the rotary machine to bring it into a free running state, and thereafter carries out control so as to resume driving of the rotary machine. Further, the motor driving apparatus has an inverter and a drive control circuit that controls switching operation of the inverter based on rotation of the rotary machine.Type: ApplicationFiled: October 31, 2007Publication date: October 16, 2008Applicant: DENSO CORPORATIONInventors: Sadahiro Akama, Shuji Agatsuma, Nobumasa Ueda, Masahiro Kuroda, Kiyoshi Nagata, Masaya Ootake
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Patent number: 7391175Abstract: A smart actuator that includes a driving device and an electric actuator such as a DC motor includes a driving current detecting circuit, a driving circuit connected to the electric actuator, a control circuit that controls the driving circuit according to current data provided by the current detecting circuit to supply the electric actuator with a set amount of driving current when the electric actuator has a designed operating condition and a correction circuit that corrects the current data of the driving current if the operating condition is shifted from the designed operating condition to supply the set amount of driving current to the electric actuator.Type: GrantFiled: May 18, 2006Date of Patent: June 24, 2008Assignee: DENSO CORPORATIONInventor: Nobumasa Ueda
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Patent number: 7212036Abstract: In order to protect semiconductor switching-devices employed in an H bridge circuit against an over-voltage without using a special protection circuit, a control circuit outputs a control signal to a driving circuit for driving the H bridge circuit in order to turn off FETs serving as the semiconductor switching-devices when an over-voltage detection circuit detects the over-voltage applied to the H bridge circuit.Type: GrantFiled: February 15, 2005Date of Patent: May 1, 2007Assignee: Denso CorporationInventors: Hirokazu Kasuya, Koji Numazaki, Mitsuhiro Saitou, Yutaka Fukuda, Nobumasa Ueda
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Publication number: 20060267559Abstract: A smart actuator that includes a driving device and an electric actuator such as a DC motor includes a driving current detecting circuit, a driving circuit connected to the electric actuator, a control circuit that controls the driving circuit according to current data provided by the current detecting circuit to supply the electric actuator with a set amount of driving current when the electric actuator has a designed operating condition and a correction circuit that corrects the current data of the driving current if the operating condition is shifted from the designed operating condition to supply the set amount of driving current to the electric actuator.Type: ApplicationFiled: May 18, 2006Publication date: November 30, 2006Applicant: DENSO CORPORATIONInventor: Nobumasa Ueda
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Patent number: 7109558Abstract: A power MOS transistor formed of an array of source cells and drain cells on an IC chip substrate has a plurality of substrate contact cells, each formed external to the source cells, having respective substrate potential-setting electrodes to which an externally supplied substrate bias voltage can be applied, enabling the substrate potential to be set independently of the source potential of the transistor. It thereby becomes possible to modify the threshold voltage of the transistor or maintain a constant potential difference between the substrate potential and that of a gate input signal. Since the requirement for a substrate contact region within each source cell is eliminated, and the number of substrate contact cells can be fewer than that of the source cells, the chip area occupied by the transistor can be reduced by comparison with a prior art configuration providing such a substrate potential control capability.Type: GrantFiled: June 4, 2002Date of Patent: September 19, 2006Assignee: Denso CorporationInventors: Takashi Nakano, Satoshi Shiraki, Yutaka Fukuda, Nobumasa Ueda, Shoji Miura