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公开(公告)号：US20210367570A1
公开(公告)日：2021-11-25
申请号：US17399268
申请日：2021-08-11
Applicant: Rohm Co., Ltd.
Inventor： Hiroyuki Makimoto , Yusuke Yoshii , Yuki Inoue
Abstract: An operational amplifier 1 comprises transistors Q1 and Q2 forming an input stage, and input resistors R1 and R2 which form a filter together with parasitic capacitors C1 and C2 accompanying the transistors Q1 and Q2. Resistance values R of the resistors R1 and R2 may be set to R=1/(2π·fc·C), where C is the capacitance value of each of the parasitic capacitors C1 and C2, and fc is the target cutoff frequency of the filter. The operational amplifier 1 may also include a power supply resistor R0 which forms a filter together with a parasitic capacitor C0 accompanying a power supply line.
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公开(公告)号：US09886047B2
公开(公告)日：2018-02-06
申请号：US15138854
申请日：2016-04-26
Applicant: Rohm Co., Ltd.
Inventor： Yusuke Yoshii , Yuki Inoue
CPC classification number: G05F1/575 , G05F3/30 , H03F3/45475 , H03F2203/45522 , H03F2203/45534 , H03K5/24
Abstract: As one example of the invention disclosed herein, a reference voltage generation circuit has: a first reference voltage source generating a first reference voltage; a second reference voltage source generating a second reference voltage having a temperature response different from that of the first reference voltage; a first comparator comparing the first and second reference voltages to generate a first comparison signal; and a selector selectively outputting one of the first and second reference voltages as a reference voltage according to the first comparison signal.
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公开(公告)号：US11121685B2
公开(公告)日：2021-09-14
申请号：US16640321
申请日：2018-08-06
Applicant: Rohm Co., Ltd.
Inventor： Hiroyuki Makimoto , Yusuke Yoshii , Yuki Inoue
Abstract: An operational amplifier 1 comprises transistors Q1 and Q2 forming an input stage, and input resistors R1 and R2 which form a filter together with parasitic capacitors C1 and C2 accompanying the transistors Q1 and Q2. Resistance values R of the resistors R1 and R2 may be set to R=1/(2π·fc·C), where C is the capacitance value of each of the parasitic capacitors C1 and C2, and fc is the target cutoff frequency of the filter. The operational amplifier 1 may also include a power supply resistor R0 which forms a filter together with a parasitic capacitor C0 accompanying a power supply line.
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公开(公告)号：US10998767B2
公开(公告)日：2021-05-04
申请号：US15755284
申请日：2016-07-15
Applicant: ROHM CO., LTD.
Inventor： Yoshihiro Ikefuji , Takeshi Seike , Yusuke Yoshii
Abstract: This power transmission apparatus transmits power to a power reception apparatus by means of a magnetic field resonance system by supplying an output AC voltage (VE) of a class E amplifier to a power-transmission side resonance circuit (TT). Before the transmission of power, the output AC voltage (VE) of the class E amplifier is divided, and a voltage obtained by the division is supplied to the power-transmission side resonance circuit (TT). A current amplitude detection value of a power-transmission side coil (TL) at this time is obtained as an evaluation value, and whether to permit execution of power transmission is controlled on the basis of the evaluation value, through determination as to whether a foreign object is present or not.
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Patent Agency Ranking
公开(公告)号：US11528001B2
公开(公告)日：2022-12-13
申请号：US17399268
申请日：2021-08-11
Applicant: Rohm Co., Ltd.
Inventor： Hiroyuki Makimoto , Yusuke Yoshii , Yuki Inoue
Abstract: An operational amplifier 1 comprises transistors Q1 and Q2 forming an input stage, and input resistors R1 and R2 which form a filter together with parasitic capacitors C1 and C2 accompanying the transistors Q1 and Q2. Resistance values R of the resistors R1 and R2 may be set to R=1/(2π·fc·C), where C is the capacitance value of each of the parasitic capacitors C1 and C2, and fc is the target cutoff frequency of the filter. The operational amplifier 1 may also include a power supply resistor R0 which forms a filter together with a parasitic capacitor C0 accompanying a power supply line.
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公开(公告)号：US10067522B2
公开(公告)日：2018-09-04
申请号：US15857434
申请日：2017-12-28
Applicant: Rohm Co., Ltd.
Inventor： Yusuke Yoshii , Yuki Inoue
Abstract: As one example of the invention disclosed herein, a reference voltage generation circuit has: a first reference voltage source generating a first reference voltage; a second reference voltage source generating a second reference voltage having a temperature response different from that of the first reference voltage; a first comparator comparing the first and second reference voltages to generate a first comparison signal; and a selector selectively outputting one of the first and second reference voltages as a reference voltage according to the first comparison signal.
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公开(公告)号：US11658219B2
公开(公告)日：2023-05-23
申请号：US17371301
申请日：2021-07-09
Applicant: ROHM CO., LTD.
Inventor： Kazuki Kawasaki , Yuki Inoue , Yusuke Yoshii
IPC: H01L29/417 , H01L23/49
CPC classification number: H01L29/41725 , H01L23/49
Abstract: The present disclosure provides a semiconductor device capable of reducing wiring resistance by using a stripe wire. The semiconductor device includes: a source pad electrode formed on a second interlayer insulating layer; a plurality of source extraction electrodes extracted in a first direction from the source pad electrode; a drain pad electrode formed on the second interlayer insulating layer; and a plurality of drain extraction electrodes extracted in the first direction from the drain pad electrode. The source pad electrode and the plurality of source extraction electrodes are electrically connected to a plurality of source wires of stripe wire covered by the second interlayer insulating layer. The drain pad electrode and the plurality of drain extraction electrodes are electrically connected to a plurality of drain wires of the stripe wire. The plurality of drain extraction electrodes are engaged with the plurality of source extraction electrodes.
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公开(公告)号：US10333354B2
公开(公告)日：2019-06-25
申请号：US15442250
申请日：2017-02-24
Applicant: Rohm Co., Ltd.
Inventor： Yusuke Yoshii
Abstract: A contactless communication medium, includes: a coil sensitive to a magnetic field; a rectifying circuit configured to rectify an alternating power energy generated in the coil; a smoothing circuit configured to smooth a rectified output outputted from the rectifying circuit to generate a DC voltage; an output terminal connected to the smoothing circuit; a voltage detecting circuit configured to compare an output voltage extracted from the output terminal with a reference voltage; a switch configured to operate in response to an output from the voltage detection circuit and to attenuate the alternating power energy generated in the coil when the output voltage reaches a predetermined value; and a load connected to the output terminal, wherein impedance of the load has a value such that the output voltage has a predetermined value when an effective value of the magnetic field applied to the coil is 12 A/m or more.
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公开(公告)号：US20170256989A1
公开(公告)日：2017-09-07
申请号：US15442250
申请日：2017-02-24
Applicant: Rohm Co., Ltd.
Inventor： Yusuke Yoshii
CPC classification number: H02J50/12 , H02M3/335 , H02M3/33592 , H02M3/338 , H04B5/0037 , H04B5/0075 , Y02B70/1475
Abstract: A contactless communication medium, includes: a coil sensitive to a magnetic field; a rectifying circuit configured to rectify an alternating power energy generated in the coil; a smoothing circuit configured to smooth a rectified output outputted from the rectifying circuit to generate a DC voltage; an output terminal connected to the smoothing circuit; a voltage detecting circuit configured to compare an output voltage extracted from the output terminal with a reference voltage; a switch configured to operate in response to an output from the voltage detection circuit and to attenuate the alternating power energy generated in the coil when the output voltage reaches a predetermined value; and a load connected to the output terminal, wherein impedance of the load has a value such that the output voltage has a predetermined value when an effective value of the magnetic field applied to the coil is 12 A/m or more.
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