Patents by Inventor Keiji Amemiya
Keiji Amemiya 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: 10756553Abstract: A programmable battery protection system. Implementations may include a battery protection integrated circuit (IC) with an array of fuses, a plurality of latches coupled with the array of fuses, a plurality of MOSFETs coupled with the plurality of latches, and a plurality of resistors coupled in series and in parallel with each one of the plurality of MOSFETs. The IC may also include a comparator coupled with the plurality of resistors and with a battery control circuit. Whether any one of the array of fuses is open or closed (remains closed) may be set by a fuse trimming signal from the battery control circuit. A voltage supplied to the comparator by the plurality of resistors during operation may be one of a discharge overcurrent threshold voltage, a charge overcurrent threshold voltage, or a short current threshold voltage.Type: GrantFiled: November 9, 2018Date of Patent: August 25, 2020Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Hiroshi Saito, Keiji Amemiya, Mutsuki Niki, Yasuaki Hayashi
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Patent number: 10741884Abstract: A programmable battery protection system. Implementations may include: a battery, only two field effect transistors (FETs) coupled with the battery, and a battery protection integrated circuit (IC) coupled with the FETs. The battery protection IC may include an array of fuses, a plurality of latches coupled with the array of fuses, and a comparator coupled with the plurality of latches. The array of fuses and the plurality of latches may be coupled with a fuse refresh circuit coupled with a trigger circuit where the fuse refresh circuit is configured to refresh the states of the plurality of latches using states of the array of fuses in response to receiving one of a power on signal and an operating trigger signal generated by the trigger circuit. The plurality of latches may be used to generate a threshold voltage that is provided to the comparator.Type: GrantFiled: December 20, 2018Date of Patent: August 11, 2020Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Hiroshi Saito, Keiji Amemiya, Mutsuki Niki, Yasuaki Hayashi, Kenichi Nakajima
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Patent number: 10700390Abstract: A programmable battery protection system. Implementations may include: a battery, only two field effect transistors (FETs) coupled with the battery, and a battery protection integrated circuit (IC) coupled with the FETs. The battery protection IC may include an array of fuses, a plurality of latches coupled with the array of fuses, and a comparator coupled with the plurality of latches. The array of fuses and the plurality of latches may be coupled with a fuse refresh circuit coupled with a trigger circuit where the fuse refresh circuit is configured to refresh the states of the plurality of latches using states of the array of fuses in response to receiving one of a power on signal and an operating trigger signal generated by the trigger circuit. The plurality of latches may be used to generate a threshold voltage that is provided to the comparator.Type: GrantFiled: December 20, 2018Date of Patent: June 30, 2020Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Hiroshi Saito, Keiji Amemiya, Mutsuki Niki, Yasuaki Hayashi, Kenichi Nakajima
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Patent number: 10686317Abstract: A programmable battery protection system. Implementations may include a battery protection integrated circuit (IC) with an array of fuses, a plurality of latches coupled with the array of fuses, a plurality of MOSFETs coupled with the plurality of latches, and a plurality of resistors coupled in series and in parallel with each one of the plurality of MOSFETs. The IC may also include a comparator coupled with the plurality of resistors and with a battery control circuit. Whether any one of the array of fuses is open or closed (remains closed) may be set by a fuse trimming signal from the battery control circuit. A voltage supplied to the comparator by the plurality of resistors during operation may be one of a discharge overcurrent threshold voltage, a charge overcurrent threshold voltage, or a short current threshold voltage.Type: GrantFiled: November 9, 2018Date of Patent: June 16, 2020Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Hiroshi Saito, Keiji Amemiya, Mutsuki Niki, Yasuaki Hayashi
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Patent number: 10651644Abstract: A programmable battery protection system. Implementations may include: a battery and a battery protection integrated circuit (IC) coupled with the battery that includes a reference voltage circuit, a variable resistor circuit coupled with the reference voltage circuit, and only two field effect transistors (FETs) coupled with the overcurrent detection circuit and with the battery. The reference voltage circuit and the variable resistor circuit may be configured to cause a current sense signal of the system to vary substantially linearly with changes in a supply voltage of the system.Type: GrantFiled: January 30, 2018Date of Patent: May 12, 2020Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Yasuaki Hayashi, Keiji Amemiya, Mutsuki Niki, Hiroshi Saito
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Publication number: 20190237820Abstract: A programmable battery protection system. Implementations may include: a battery, only two field effect transistors (FETs), and a battery protection integrated circuit (IC). The battery protection IC may include an array of fuses, first plurality of latches, second plurality of latches, and a comparator. The array of fuses, first plurality of latches, and second plurality of latches may be coupled with a fuse refresh circuit coupled with an analog trigger circuit and a logic trigger circuit. The fuse refresh circuit may be configured to refresh the states of the latches using states of the array of fuses in response to receiving an operating trigger signal generated by the analog trigger circuit or a logic trigger signal generated by the logic trigger circuit. The first plurality of latches may be used to generate a threshold voltage that is provided to the comparator.Type: ApplicationFiled: April 8, 2019Publication date: August 1, 2019Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Keiji Amemiya, Hiroshi Saito, Mutsuki Niki, Yasuaki Hayashi
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Patent number: 10290907Abstract: A programmable battery protection system. Implementations may include: a battery, only two field effect transistors (FETs), and a battery protection integrated circuit (IC). The battery protection IC may include an array of fuses, first plurality of latches, second plurality of latches, and a comparator. The array of fuses, first plurality of latches, and second plurality of latches may be coupled with a fuse refresh circuit coupled with an analog trigger circuit and a logic trigger circuit. The fuse refresh circuit may be configured to refresh the states of the latches using states of the array of fuses in response to receiving an operating trigger signal generated by the analog trigger circuit or a logic trigger signal generated by the logic trigger circuit. The first plurality of latches may be used to generate a threshold voltage that is provided to the comparator.Type: GrantFiled: July 30, 2015Date of Patent: May 14, 2019Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Keiji Amemiya, Hiroshi Saito, Mutsuki Niki, Yasuaki Hayashi
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Publication number: 20190123398Abstract: A programmable battery protection system. Implementations may include: a battery, only two field effect transistors (FETs) coupled with the battery, and a battery protection integrated circuit (IC) coupled with the FETs. The battery protection IC may include an array of fuses, a plurality of latches coupled with the array of fuses, and a comparator coupled with the plurality of latches. The array of fuses and the plurality of latches may be coupled with a fuse refresh circuit coupled with a trigger circuit where the fuse refresh circuit is configured to refresh the states of the plurality of latches using states of the array of fuses in response to receiving one of a power on signal and an operating trigger signal generated by the trigger circuit. The plurality of latches may be used to generate a threshold voltage that is provided to the comparator.Type: ApplicationFiled: December 20, 2018Publication date: April 25, 2019Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Hiroshi SAITO, Keiji AMEMIYA, Mutsuki NIKI, Yasuaki HAYASHI, Kenichi NAKAJIMA
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Publication number: 20190123399Abstract: A programmable battery protection system. Implementations may include: a battery, only two field effect transistors (FETs) coupled with the battery, and a battery protection integrated circuit (IC) coupled with the FETs. The battery protection IC may include an array of fuses, a plurality of latches coupled with the array of fuses, and a comparator coupled with the plurality of latches. The array of fuses and the plurality of latches may be coupled with a fuse refresh circuit coupled with a trigger circuit where the fuse refresh circuit is configured to refresh the states of the plurality of latches using states of the array of fuses in response to receiving one of a power on signal and an operating trigger signal generated by the trigger circuit. The plurality of latches may be used to generate a threshold voltage that is provided to the comparator.Type: ApplicationFiled: December 20, 2018Publication date: April 25, 2019Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Hiroshi SAITO, Keiji AMEMIYA, Mutsuki NIKI, Yasuaki HAYASHI, Kenichi NAKAJIMA
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Publication number: 20190081490Abstract: A programmable battery protection system. Implementations may include a battery protection integrated circuit (IC) with an array of fuses, a plurality of latches coupled with the array of fuses, a plurality of MOSFETs coupled with the plurality of latches, and a plurality of resistors coupled in series and in parallel with each one of the plurality of MOSFETs. The IC may also include a comparator coupled with the plurality of resistors and with a battery control circuit. Whether any one of the array of fuses is open or closed (remains closed) may be set by a fuse trimming signal from the battery control circuit. A voltage supplied to the comparator by the plurality of resistors during operation may be one of a discharge overcurrent threshold voltage, a charge overcurrent threshold voltage, or a short current threshold voltage.Type: ApplicationFiled: November 9, 2018Publication date: March 14, 2019Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Hiroshi SAITO, Keiji AMEMIYA, Mutsuki NIKI, Yasuaki HAYASHI
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Publication number: 20190081491Abstract: A programmable battery protection system. Implementations may include a battery protection integrated circuit (IC) with an array of fuses, a plurality of latches coupled with the array of fuses, a plurality of MOSFETs coupled with the plurality of latches, and a plurality of resistors coupled in series and in parallel with each one of the plurality of MOSFETs. The IC may also include a comparator coupled with the plurality of resistors and with a battery control circuit. Whether any one of the array of fuses is open or closed (remains closed) may be set by a fuse trimming signal from the battery control circuit. A voltage supplied to the comparator by the plurality of resistors during operation may be one of a discharge overcurrent threshold voltage, a charge overcurrent threshold voltage, or a short current threshold voltage.Type: ApplicationFiled: November 9, 2018Publication date: March 14, 2019Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Hiroshi SAITO, Keiji AMEMIYA, Mutsuki NIKI, Yasuaki HAYASHI
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Patent number: 10205197Abstract: A programmable battery protection system. Implementations may include: a battery, only two field effect transistors (FETs) coupled with the battery, and a battery protection integrated circuit (IC) coupled with the FETs. The battery protection IC may include an array of fuses, a plurality of latches coupled with the array of fuses, and a comparator coupled with the plurality of latches. The array of fuses and the plurality of latches may be coupled with a fuse refresh circuit coupled with a trigger circuit where the fuse refresh circuit is configured to refresh the states of the plurality of latches using states of the array of fuses in response to receiving one of a power on signal and an operating trigger signal generated by the trigger circuit. The plurality of latches may be used to generate a threshold voltage that is provided to the comparator.Type: GrantFiled: July 29, 2015Date of Patent: February 12, 2019Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Hiroshi Saito, Keiji Amemiya, Mutsuki Niki, Yasuaki Hayashi, Kenichi Nakajima
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Patent number: 10205330Abstract: A programmable battery protection system. Implementations may include a battery protection integrated circuit (IC) with an array of fuses, a plurality of latches coupled with the array of fuses, a plurality of MOSFETs coupled with the plurality of latches, and a plurality of resistors coupled in series and in parallel with each one of the plurality of MOSFETs. The IC may also include a comparator coupled with the plurality of resistors and with a battery control circuit. Whether any one of the array of fuses is open or closed (remains closed) may be set by a fuse trimming signal from the battery control circuit. A voltage supplied to the comparator by the plurality of resistors during operation may be one of a discharge overcurrent threshold voltage, a charge overcurrent threshold voltage, or a short current threshold voltage.Type: GrantFiled: July 27, 2015Date of Patent: February 12, 2019Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Hiroshi Saito, Keiji Amemiya, Mutsuki Niki, Yasuaki Hayashi
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Publication number: 20180159314Abstract: A programmable battery protection system. Implementations may include: a battery and a battery protection integrated circuit (IC) coupled with the battery that includes a reference voltage circuit, a variable resistor circuit coupled with the reference voltage circuit, and only two field effect transistors (FETs) coupled with the overcurrent detection circuit and with the battery. The reference voltage circuit and the variable resistor circuit may be configured to cause a current sense signal of the system to vary substantially linearly with changes in a supply voltage of the system.Type: ApplicationFiled: January 30, 2018Publication date: June 7, 2018Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Yasuaki HAYASHI, Keiji AMEMIYA, Mutsuki NIKI, Hiroshi SAITO
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Patent number: 9906015Abstract: A programmable battery protection system. Implementations may include: a battery and a battery protection integrated circuit (IC) coupled with the battery that includes a reference voltage circuit, a variable resistor circuit coupled with the reference voltage circuit, and only two field effect transistors (FETs) coupled with the overcurrent detection circuit and with the battery. The reference voltage circuit and the variable resistor circuit may be configured to cause a current sense signal of the system to vary substantially linearly with changes in a supply voltage of the system.Type: GrantFiled: July 30, 2015Date of Patent: February 27, 2018Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Yasuaki Hayashi, Keiji Amemiya, Mutsuki Niki, Hiroshi Saito
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Publication number: 20170033412Abstract: A programmable battery protection system. Implementations may include: a battery, only two field effect transistors (FETs) coupled with the battery, and a battery protection integrated circuit (IC) coupled with the FETs. The battery protection IC may include an array of fuses, a plurality of latches coupled with the array of fuses, and a comparator coupled with the plurality of latches. The array of fuses and the plurality of latches may be coupled with a fuse refresh circuit coupled with a trigger circuit where the fuse refresh circuit is configured to refresh the states of the plurality of latches using states of the array of fuses in response to receiving one of a power on signal and an operating trigger signal generated by the trigger circuit. The plurality of latches may be used to generate a threshold voltage that is provided to the comparator.Type: ApplicationFiled: July 29, 2015Publication date: February 2, 2017Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Hiroshi SAITO, Keiji AMEMIYA, Mutsuki NIKI, Yasuaki HAYASHI, Kenichi NAKAJIMA
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Publication number: 20170033413Abstract: A programmable battery protection system. Implementations may include: a battery, only two field effect transistors (FETs), and a battery protection integrated circuit (IC). The battery protection IC may include an array of fuses, first plurality of latches, second plurality of latches, and a comparator. The array of fuses, first plurality of latches, and second plurality of latches may be coupled with a fuse refresh circuit coupled with an analog trigger circuit and a logic trigger circuit. The fuse refresh circuit may be configured to refresh the states of the latches using states of the array of fuses in response to receiving an operating trigger signal generated by the analog trigger circuit or a logic trigger signal generated by the logic trigger circuit. The first plurality of latches may be used to generate a threshold voltage that is provided to the comparator.Type: ApplicationFiled: July 30, 2015Publication date: February 2, 2017Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Keiji AMEMIYA, Hiroshi SAITO, Mutsuki NIKI, Yasuaki HAYASHI
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Publication number: 20170033578Abstract: A programmable battery protection system. Implementations may include a battery protection integrated circuit (IC) with an array of fuses, a plurality of latches coupled with the array of fuses, a plurality of MOSFETs coupled with the plurality of latches, and a plurality of resistors coupled in series and in parallel with each one of the plurality of MOSFETs. The IC may also include a comparator coupled with the plurality of resistors and with a battery control circuit. Whether any one of the array of fuses is open or closed (remains closed) may be set by a fuse trimming signal from the battery control circuit. A voltage supplied to the comparator by the plurality of resistors during operation may be one of a discharge overcurrent threshold voltage, a charge overcurrent threshold voltage, or a short current threshold voltage.Type: ApplicationFiled: July 27, 2015Publication date: February 2, 2017Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Hiroshi SAITO, Keiji AMEMIYA, Mutsuki NIKI, Yasuaki HAYASHI
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Publication number: 20170033547Abstract: A programmable battery protection system. Implementations may include: a battery and a battery protection integrated circuit (IC) coupled with the battery that includes a reference voltage circuit, a variable resistor circuit coupled with the reference voltage circuit, and only two field effect transistors (FETs) coupled with the overcurrent detection circuit and with the battery. The reference voltage circuit and the variable resistor circuit may be configured to cause a current sense signal of the system to vary substantially linearly with changes in a supply voltage of the system.Type: ApplicationFiled: July 30, 2015Publication date: February 2, 2017Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Yasuaki HAYASHI, Keiji AMEMIYA, Mutsuki NIKI, Hiroshi SAITO
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Publication number: 20170033585Abstract: A battery reset system. Implementations may include: an embedded battery, a battery control circuit coupled with the embedded battery, a discharging field effect transistor (FET) coupled with the battery control circuit, and a charging FET coupled with the battery control circuit. The system may also include a positive battery terminal coupled with the battery and a negative battery terminal coupled with the embedded battery and a reset terminal coupled with a reset circuit coupled with the battery control circuit. The reset circuit and the battery control circuit may be included in a single semiconductor chip coupled with the discharging FET, charging FET, and embedded battery.Type: ApplicationFiled: July 31, 2015Publication date: February 2, 2017Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Mutsuki NIKI, Keiji AMEMIYA, Yasuaki HAYASHI, Katsumi YAMAMOTO