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公开(公告)号：US10789792B2
公开(公告)日：2020-09-29
申请号：US16221205
申请日：2018-12-14
Applicant: Renesas Electronics America Inc.
Inventor： Robert E. Grange , Shigeru Maeta , Eugene G. Bonev
Abstract: A dual mode, passcode storage, wireless secure lock is disclosed. In one embodiment, a key is provided that includes a key coil, a first key data processing device (DPD), a second key DPD, and a key radio transceiver. The first key DPD is configured to receive a first authentication code (AC) from a lock via the key coil. The first key DPD is configured to compare the first AC with data in memory of the key DPD. The first key DPD is configured to activate the second key DPD in response to response to determining the first AC compares equally to data in memory of the first key DPD. The second key DPD is configured to transmit a second AC to the lock via the key radio transceiver after the second key DPD is activated.
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公开(公告)号：US10673254B2
公开(公告)日：2020-06-02
申请号：US15657134
申请日：2017-07-22
Applicant: Renesas Electronics America Inc.
Inventor： Kota Kano , Tetsuo Sato , Shigeru Maeta
Abstract: A simple battery and battery charger. In one embodiment, the battery charger includes an output terminal that provides a charging voltage Vout and charging current Iout. The battery is contained in a battery pack having an input terminal, which can be connected to the output terminal in order to receive Vout and Iout. The battery charger may include a first circuit for controlling the magnitude of Vout. The battery pack may include a second circuit that generates a control signal when the output terminal is connected to the input terminal. The first circuit is configured to control the magnitude of Vout based on the control signal.
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公开(公告)号：US20160118825A1
公开(公告)日：2016-04-28
申请号：US14525546
申请日：2014-10-28
Applicant: Renesas Electronics America Inc.
Inventor： Kenji Yoshida , Tetsuo Sato , Shigeru Maeta , Chikara Kobayashi
CPC classification number: H02J7/0052 , H02J7/022 , H02J2007/0059 , H02M1/10 , H02M3/158 , H02M3/1582
Abstract: A method and apparatus for generating a high voltage at a battery system. The apparatus in one embodiment includes a supply node configured for direct or indirect coupling to a supply voltage. A converter is coupled between an input node and an output node, wherein the converter is configured to operate in a forward mode or a reverse mode. The converter generates a voltage at the converter output node for charging a battery when operating in the forward mode, wherein a magnitude of the voltage generated at the converter output node is less than a magnitude of the supply voltage. The converter generates a voltage at the converter input node when operating in the reverse mode, wherein a magnitude of the voltage generated at the converter input node is different than a magnitude of a voltage provided by the battery. A control circuit is coupled to and configured to control operation of the converter in the forward mode or the reverse mode.
Abstract translation: 一种用于在电池系统产生高电压的方法和装置。 在一个实施例中的装置包括配置用于直接或间接耦合到电源电压的供电节点。 A转换器耦合在输入节点和输出节点之间，其中转换器被配置为以正向模式或反向模式操作。 该转换器在转换器输出节点处产生电压，用于在正向模式下工作时对电池充电，其中在转换器输出节点处产生的电压的幅度小于电源电压的幅度。 当在反向模式下操作时，转换器在转换器输入节点处产生电压，其中在转换器输入节点处产生的电压的大小不同于由电池提供的电压的幅度。 控制电路耦合到并被配置为在正向模式或反向模式下控制转换器的操作。
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公开(公告)号：US10679986B2
公开(公告)日：2020-06-09
申请号：US16208335
申请日：2018-12-03
Applicant: RENESAS ELECTRONICS AMERICA INC.
Inventor： Kenji Yoshida , Tetsuo Sato , Shigeru Maeta , Toshio Kimura
IPC: H01L27/06 , H01L27/12 , H01L29/786 , H01L23/538 , H03K7/08 , H01L25/065 , H01L23/528 , H01L21/8258
Abstract: A semiconductor die is disclosed upon which is formed direct current (DC) isolated first and second circuits. The first circuit is configured for electrical connection to a first ground. The second circuit is configured for electrical connection to a second ground. The first and second grounds can be at different potentials. The first and second circuits were formed using front end of line (FEOL) and back end of line (BEOL) processes. The first circuit includes a plurality of first devices, such as transistors, which were formed during the FEOL process, and the second circuit includes only second devices, such as transistors, which were formed during the BEOL process.
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公开(公告)号：US09711984B2
公开(公告)日：2017-07-18
申请号：US14525546
申请日：2014-10-28
Applicant: Renesas Electronics America Inc.
Inventor： Kenji Yoshida , Tetsuo Sato , Shigeru Maeta , Chikara Kobayashi
CPC classification number: H02J7/0052 , H02J7/022 , H02J2007/0059 , H02M1/10 , H02M3/158 , H02M3/1582
Abstract: A method and apparatus for generating a high voltage at a battery system. The apparatus in one embodiment includes a supply node configured for direct or indirect coupling to a supply voltage. A converter is coupled between an input node and an output node, wherein the converter is configured to operate in a forward mode or a reverse mode. The converter generates a voltage at the converter output node for charging a battery when operating in the forward mode, wherein a magnitude of the voltage generated at the converter output node is less than a magnitude of the supply voltage. The converter generates a voltage at the converter input node when operating in the reverse mode, wherein a magnitude of the voltage generated at the converter input node is different than a magnitude of a voltage provided by the battery. A control circuit is coupled to and configured to control operation of the converter in the forward mode or the reverse mode.
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Patent Agency Ranking
公开(公告)号：US20170077729A1
公开(公告)日：2017-03-16
申请号：US14851433
申请日：2015-09-11
Applicant: Renesas Electronics America Inc.
Inventor： Tetsuo Sato , Shigeru Maeta , Toshio Kimura , Atsushi Mitamura , Akira Negishi , Gary S. Jacobson
CPC classification number: H02J7/0045 , H02J7/0029 , H02J7/022
Abstract: A transformer less battery charger system. In one embodiment, the battery charger system includes input terminals for receiving an AC voltage, output terminals for receiving terminals of a rechargeable battery pack, and a non-isolated DC-DC converter coupled between the input terminals and the output terminals. A device is also coupled somewhere between the input terminals and the output terminals. The device is configured to selectively and indirectly couple the input terminals to the output terminals. More particularly, the device indirectly couples the input terminals to the output terminals when the rechargeable battery pack terminals are received by the output terminals, and the device indirectly decouples the input terminals from the output terminals when the rechargeable battery pack terminals are separated from the output terminals.
Abstract translation: 一个变压器少电池充电器系统。 在一个实施例中，电池充电器系统包括用于接收AC电压的输入端子，用于接收可再充电电池组的端子的输出端子以及耦合在输入端子和输出端子之间的非隔离DC-DC转换器。 器件也耦合在输入端子和输出端子之间的某处。 该设备被配置为选择性地并间接地将输入端子耦合到输出端子。 更具体地，当可再充电电池组端子被输出端子接收时，该装置将输入端子间接耦合到输出端子，并且当可再充电电池组端子与输出端分离时，该装置将输入端子与输出端子间接解耦 终端。
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公开(公告)号：US10658855B2
公开(公告)日：2020-05-19
申请号：US15827169
申请日：2017-11-30
Applicant: Renesas Electronics America Inc.
Inventor： Tetsuo Sato , Shigeru Maeta , Toshio Kimura , Atsushi Mitamura , Akira Negishi , Gary S. Jacobson
Abstract: A transformer less battery charger system. In one embodiment, the battery charger system includes input terminals for receiving an AC voltage, output terminals for receiving terminals of a rechargeable battery pack, and a non-isolated DC-DC converter coupled between the input terminals and the output terminals. A device is also coupled somewhere between the input terminals and the output terminals. The device is configured to selectively and indirectly couple the input terminals to the output terminals. More particularly, the device indirectly couples the input terminals to the output terminals when the rechargeable battery pack terminals are received by the output terminals, and the device indirectly decouples the input terminals from the output terminals when the rechargeable battery pack terminals are separated from the output terminals.
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公开(公告)号：US20180047756A1
公开(公告)日：2018-02-15
申请号：US15235878
申请日：2016-08-12
Applicant: Renesas Electronics America Inc.
Inventor： Kenji Yoshida , Tetsuo Sato , Shigeru Maeta , Toshio Kimura
IPC: H01L27/12 , H03K17/687 , H03K7/08 , H03K17/691 , H01L29/786 , H01L23/538
CPC classification number: H01L27/0688 , H01L23/528 , H01L23/5386 , H01L25/0657 , H01L27/1218 , H01L27/1225 , H01L29/78603 , H01L29/7869 , H03K7/08
Abstract: A semiconductor die is disclosed upon which is formed direct current (DC) isolated first and second circuits. The first circuit is configured for electrical connection to a first ground. The second circuit is configured for electrical connection to a second ground. The first and second grounds can be at different potentials. The first and second circuits were formed using front end of line (FEOL) and back end of line (BEOL) processes. The first circuit includes a plurality of first devices, such as transistors, which were formed during the FEOL process, and the second circuit includes only second devices, such as transistors, which were formed during the BEOL process.
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公开(公告)号：US20170207642A1
公开(公告)日：2017-07-20
申请号：US15406288
申请日：2017-01-13
Applicant: Renesas Electronics America Inc.
Inventor： Tetsuo Sato , Shigeru Maeta , Toshio Kimura , Kenji Yoshida
IPC: H02J7/00 , H01L29/786
CPC classification number: H02J7/0031 , H01L27/1225 , H01L27/124 , H02J7/0029 , H02J7/0068 , H02J7/0072 , H02J2007/0037
Abstract: An apparatus and method for use in devices such as rechargeable battery packs. The apparatus, in one embodiment, includes an integrated circuit comprising a first circuit, a second circuit, and a thin film transistor (TFT). The first circuit is configured to generate a square wave signal. The second circuit is configured to convert the square wave signal to a direct current (DC) signal. The TFT is configured to activate and conduct current in response to the DC control signal.
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公开(公告)号：US11095133B2
公开(公告)日：2021-08-17
申请号：US16889407
申请日：2020-06-01
Applicant: RENESAS ELECTRONICS AMERICA INC.
Inventor： Kota Kano , Tetsuo Sato , Shigeru Maeta
IPC: H02J7/00
Abstract: A simple battery and battery charger. In one embodiment, the battery charger includes an output terminal that provides a charging voltage Vout and charging current Iout. The battery is contained in a battery pack having an input terminal, which can be connected to the output terminal in order to receive Vout and Iout. The battery charger may include a first circuit for controlling the magnitude of Vout. The battery pack may include a second circuit that generates a control signal when the output terminal is connected to the input terminal. The first circuit is configured to control the magnitude of Vout based on the control signal.
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