Patents by Inventor Kenji Amada
Kenji Amada 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: 10222403Abstract: A control method of a semiconductor device includes inspecting an electrical property of a current detection circuit in the first semiconductor chip, writing information on a correction equation obtained on the basis of an inspection result in a memory circuit of the second semiconductor chip, and correcting, with the second semiconductor chip, a detection result obtained by the current detection circuit on the basis of the information on the correction equation.Type: GrantFiled: November 27, 2017Date of Patent: March 5, 2019Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Osamu Soma, Akira Uemura, Kenji Amada
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Patent number: 9941832Abstract: A semiconductor device includes an H-Bridge driver. The H-Bridge driver includes a first island on which a first power transistor and a second power transistor are mounted; a second island on which a third power transistor and a fourth power transistor are mounted; a third island on which a control circuit and a protection power transistor are mounted, the control circuit being configured to control the first, second, third and fourth power transistors, wherein the third island is allocated between the first island and the second island.Type: GrantFiled: December 15, 2016Date of Patent: April 10, 2018Assignee: Renesas Electronics CorporationInventor: Kenji Amada
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Publication number: 20180080963Abstract: A control method of a semiconductor device includes inspecting an electrical property of a current detection circuit in the first semiconductor chip, writing information on a correction equation obtained on the basis of an inspection result in a memory circuit of the second semiconductor chip, and correcting, with the second semiconductor chip, a detection result obtained by the current detection circuit on the basis of the information on the correction equation.Type: ApplicationFiled: November 27, 2017Publication date: March 22, 2018Inventors: Osamu SOMA, Akira Uemura, Kenji Amada
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Patent number: 9835660Abstract: A semiconductor device with the highly precise current detecting function is provided. Current detection is performed using a semiconductor device in which two semiconductor chips are mounted in one package. The first semiconductor chip is provided with an electric power supply transistor to supply power to a load via a load driving terminal, and a current detection circuit to detect a current flowing through the load driving terminal. In the inspection process of the semiconductor device, the electrical property of the current detection circuit in the first semiconductor chip is inspected, and the information on a correction equation obtained as the inspection result is written in a memory circuit of the second semiconductor chip. The second semiconductor chip corrects the detection result obtained by the current detection circuit based on the information on the correction equation written in the memory circuit concerned.Type: GrantFiled: March 14, 2016Date of Patent: December 5, 2017Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Osamu Soma, Akira Uemura, Kenji Amada
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Publication number: 20170099024Abstract: A semiconductor device includes an H-Bridge driver. The H-Bridge driver includes a first island on which a first power transistor and a second power transistor are mounted; a second island on which a third power transistor and a fourth power transistor are mounted; a third island on which a control circuit and a protection power transistor are mounted, the control circuit being configured to control the first, second, third and fourth power transistors, wherein the third island is allocated between the first island and the second island.Type: ApplicationFiled: December 15, 2016Publication date: April 6, 2017Applicant: Renesas Electronics CorporationInventor: Kenji AMADA
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Patent number: 9559629Abstract: A semiconductor device includes a control section, a first arm, and a second arm; and has an H-bridge circuit to supply an input current supplied from a power source to an output terminal as a reversible electric current on the basis of a control signal outputted from the control section and a reverse-connection-time backflow prevention circuit to prevent an electric current in a direction opposite to the direction of the input current from being supplied to the H-bridge circuit. The first arm is formed over a first island. The second arm is formed over a second island. The control section and the reverse-connection-time backflow prevention circuit are formed over a third island.Type: GrantFiled: November 17, 2014Date of Patent: January 31, 2017Assignee: Renesas Electronics CorporationInventor: Kenji Amada
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Publication number: 20160305989Abstract: A semiconductor device with the highly precise current detecting function is provided. Current detection is performed using a semiconductor device in which two semiconductor chips are mounted in one package. The first semiconductor chip is provided with an electric power supply transistor to supply power to a load via a load driving terminal, and a current detection circuit to detect a current flowing through the load driving terminal. In the inspection process of the semiconductor device, the electrical property of the current detection circuit in the first semiconductor chip is inspected, and the information on a correction equation obtained as the inspection result is written in a memory circuit of the second semiconductor chip. The second semiconductor chip corrects the detection result obtained by the current detection circuit based on the information on the correction equation written in the memory circuit concerned.Type: ApplicationFiled: March 14, 2016Publication date: October 20, 2016Inventors: Osamu SOMA, Akira Uemura, Kenji Amada
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Publication number: 20150069937Abstract: A semiconductor device includes a control section, a first arm, and a second arm; and has an H-bridge circuit to supply an input current supplied from a power source to an output terminal as a reversible electric current on the basis of a control signal outputted from the control section and a reverse-connection-time backflow prevention circuit to prevent an electric current in a direction opposite to the direction of the input current from being supplied to the H-bridge circuit. The first arm is formed over a first island. The second arm is formed over a second island. The control section and the reverse-connection-time backflow prevention circuit are formed over a third island.Type: ApplicationFiled: November 17, 2014Publication date: March 12, 2015Applicant: Renesas Electronics CorporationInventor: Kenji AMADA
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Patent number: 8917134Abstract: A semiconductor device includes a control section, a first arm, and a second arm; and has an H-bridge circuit to supply an input current supplied from a power source to an output terminal as a reversible electric current on the basis of a control signal outputted from the control section and a reverse-connection-time backflow prevention circuit to prevent an electric current in a direction opposite to the direction of the input current from being supplied to the H-bridge circuit. The first arm is formed over a first island. The second arm is formed over a second island. The control section and the reverse-connection-time backflow prevention circuit are formed over a third island.Type: GrantFiled: October 18, 2013Date of Patent: December 23, 2014Assignee: Renesas Electronics CorporationInventor: Kenji Amada
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Publication number: 20140118056Abstract: A semiconductor device includes a control section, a first arm, and a second arm; and has an H-bridge circuit to supply an input current supplied from a power source to an output terminal as a reversible electric current on the basis of a control signal outputted from the control section and a reverse-connection-time backflow prevention circuit to prevent an electric current in a direction opposite to the direction of the input current from being supplied to the H-bridge circuit. The first arm is formed over a first island. The second arm is formed over a second island. The control section and the reverse-connection-time backflow prevention circuit are formed over a third island.Type: ApplicationFiled: October 18, 2013Publication date: May 1, 2014Applicant: Renesas Electronics CorporationInventor: Kenji AMADA
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Patent number: 7804310Abstract: A multi-source MOS transistor includes a sense MOS transistor and a load MOS transistor, and is connected to a load. A current detection portion has a negative input offset voltage characteristic, and detects a first sense current in a state where it is connected to the power supply and the sense MOS transistor and a second sense current in a state where it is connected to the sense MOS transistor and the load MOS transistor. A calculation control portion calculates a load current based on the first sense current and the second sense current such that the effect of the input offset voltage in the current detection portion is cancelled.Type: GrantFiled: September 10, 2008Date of Patent: September 28, 2010Assignee: NEC Electronics CorporationInventor: Kenji Amada
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Publication number: 20090079415Abstract: A multi-source MOS transistor includes a sense MOS transistor and a load MOS transistor, and is connected to a load. A current detection portion has a negative input offset voltage characteristic, and detects a first sense current in a state where it is connected to the power supply and the sense MOS transistor and a second sense current in a state where it is connected to the sense MOS transistor and the load MOS transistor. A calculation control portion calculates a load current based on the first sense current and the second sense current such that the effect of the input offset voltage in the current detection portion is cancelled.Type: ApplicationFiled: September 10, 2008Publication date: March 26, 2009Applicant: NEC ELECTRONICS CORPORATIONInventor: Kenji Amada
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Publication number: 20070108840Abstract: An electronic controlling device according to an embodiment of the present invention includes: a power supply control circuit generating a second power based on a first power in response to input of a first trigger signal or a second trigger signal; and a device control circuit operating based on the second power, operating in a first operating mode if activated in accordance with the first trigger signal, operating in a second operating mode if activated in accordance with the second trigger signal, and outputting a shutdown signal to stop generation of the second power with the power supply control circuit after a predetermined operation in the first operating mode or the second operating mode.Type: ApplicationFiled: November 2, 2006Publication date: May 17, 2007Applicant: NEC ELECTRONICS CORPORATIONInventors: Kenji Amada, Hiroyuki Ikeda