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公开(公告)号：US09906079B2
公开(公告)日：2018-02-27
申请号：US14523873
申请日：2014-10-25
Applicant: Renesas Electronics Corporation
Inventor： Koichiro Noguchi , Koichi Nose , Yoshifumi Ikenaga , Yoichi Yoshida
CPC classification number: H02J50/20 , G05F1/67 , H02J17/00 , H02J50/40 , H02M7/217 , H02M2001/0003 , Y10T307/549
Abstract: There is a problem in the prior semiconductor devices that energy recovery efficiency is low. According to one embodiment of the present invention, a power supply circuit includes an alternating-current signal synthesis unit including a plurality of alternating-current coupling elements having primary sides to which respective input alternating-current signals are input and secondary sides connected in series with each other, and a control circuit that outputs an input selection signal specifying a combination of the input alternating-current signals to be synthesized. The control circuit generates the input selection signal so as to maximize the output alternating-current signal synthesized by the alternating-current synthesis signal unit.
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Patent Agency Ranking
公开(公告)号：US10305468B2
公开(公告)日：2019-05-28
申请号：US16024097
申请日：2018-06-29
Applicant: Renesas Electronics Corporation
Inventor： Koichiro Noguchi , Koichi Nose , Yoshifumi Ikenaga , Yoichi Yoshida
Abstract: According to one embodiment, a semiconductor device includes: a first switch SWx which switches whether or not to supply a first power supply voltage Vx generated by accumulating a charge outputted from a power source 10, as a second power supply voltage VDD to a first circuit 13, and a second switch SW1 which switches whether or not to connect to the first circuit 13 a smoothing capacitor C1 which suppresses a fluctuation of the second power supply voltage VDD, and the first switch SWx is switched to an on state in response to that the first power supply voltage Vx has reached a sufficient voltage, and then the second switch SW1 is switched to the on state in response to that the second power supply voltage VDD has reached a sufficient voltage.
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公开(公告)号：US09965418B2
公开(公告)日：2018-05-08
申请号：US15098148
申请日：2016-04-13
Applicant: Renesas Electronics Corporation
Inventor： Koichiro Noguchi
CPC classification number: G06F13/36 , G06F13/4068
Abstract: A semiconductor device is provided which can quickly detect a malfunction of high priority modules by frequently checking a coupling state between the high priority modules and a communication bus.According to an embodiment, a host controller includes a module control circuit that performs data communication with a plurality of externally-provided modules through a communication bus, a coupling state check circuit which is coupled to the communication bus and which checks the presence or absence of a response from the modules, and selected from the modules based on information of a check list, and a control circuit that selectively causes the module control circuit and the coupling state check circuit to operate.
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公开(公告)号：US10230275B2
公开(公告)日：2019-03-12
申请号：US15826062
申请日：2017-11-29
Applicant: Renesas Electronics Corporation
Inventor： Koichiro Noguchi , Koichi Nose , Yoshifumi Ikenaga , Yoichi Yoshida
Abstract: A power supply device includes a plurality of power sources each including an antenna and an AC/DC conversion unit that converts an AC signal received by the antenna to a DC signal, a plurality of consolidating units each including a first consolidating circuit that selectively consolidates a plurality of DC signals supplied by the plurality of power sources, and a power supply unit that includes a second consolidating circuit that selectively consolidates DC signals output from the plurality of consolidating units, and a first voltage conversion circuit that converts a DC signal resulting from consolidation in the second consolidating circuit, to a predetermined voltage.
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公开(公告)号：US10033372B2
公开(公告)日：2018-07-24
申请号：US14823579
申请日：2015-08-11
Applicant: Renesas Electronics Corporation
Inventor： Koichiro Noguchi , Koichi Nose , Yoshifumi Ikenaga , Yoichi Yoshida
Abstract: According to one embodiment, a semiconductor device includes: a first switch SWx which switches whether or not to supply a first power supply voltage Vx generated by accumulating a charge outputted from a power source 10, as a second power supply voltage VDD to a first circuit 13, and a second switch SW1 which switches whether or not to connect to the first circuit 13 a smoothing capacitor C1 which suppresses a fluctuation of the second power supply voltage VDD, and the first switch SWx is switched to an on state in response to that the first power supply voltage Vx has reached a sufficient voltage, and then the second switch SW1 is switched to the on state in response to that the second power supply voltage VDD has reached a sufficient voltage.
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公开(公告)号：US09843227B2
公开(公告)日：2017-12-12
申请号：US14690381
申请日：2015-04-18
Applicant: Renesas Electronics Corporation
Inventor： Koichiro Noguchi , Koichi Nose , Yoshifumi Ikenaga , Yoichi Yoshida
Abstract: A power supply device according to an embodiment comprises a plurality of power sources 10 each including an antenna and an AC/DC conversion unit, a plurality of consolidating units 13_1 to 13_i, and a power supply unit 15. The consolidating units 13_1 to 13_i respectively include consolidating circuits 14_1 to 14_i that selectively consolidate a plurality of DC signals 21_1 to 21_n supplied by the plurality of power sources 10. The power supply unit 15 includes a consolidating circuit 16 that selectively consolidates the DC signals 21_1 to 21_i output from the plurality of consolidating units 13_1 to 13_i, and a voltage conversion circuit 17 that converts a DC signal 23 resulting from consolidation in the consolidating circuit 16, to a predetermined voltage.
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