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公开(公告)号：US20140368056A1
公开(公告)日：2014-12-18
申请号：US14472136
申请日：2014-08-28
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Tatsuya HOSOTANI
IPC: H02J5/00
CPC classification number: H02J50/12 , H01F27/28 , H01F38/14 , H02J5/005 , H02J7/025 , H04B5/0037 , H04B5/0075
Abstract: A power transmitting unit-side resonance circuit including a resonance capacitor connected in series to a power transmitting coil and a power receiving unit-side resonance circuit including a resonance capacitor connected in series to a power receiving coil are caused to resonate with each other so that each resonance circuit resonates. With this, power is transmitted between the power transmitting coil and the power receiving unit making use of magnetic field resonance coupling and electric field resonance coupling. By making use of resonance, only effective power is transmitted from the power transmitting unit side to the power receiving unit side, while reactive power that is reflected is reserved as resonance energy in each resonance circuit.
Abstract translation: 包括与电力传输线圈串联连接的谐振电容器和包括与受电线圈串联连接的谐振电容器的受电单元侧谐振电路的发送单元侧谐振电路彼此谐振，从而 每个谐振电路谐振。 由此，利用磁场共振耦合和电场谐振耦合，在发送线圈和受电单元之间传递功率。 通过利用谐振，只有有效功率从发送单元侧发送到电力接收单元侧，而反射的无功功率被保留为每个谐振电路中的谐振能量。
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公开(公告)号：US20130301308A1
公开(公告)日：2013-11-14
申请号：US13941753
申请日：2013-07-15
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tatsuya HOSOTANI
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M3/33576 , H02M3/3381 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
Abstract: In a switching power supply device with reduced size and increased power conversion efficiency, a first resonant circuit including a series resonant inductor and a series resonant capacitor, and a second resonant circuit including a series resonant inductor and a series resonant capacitor, are caused to resonate with each other to cause sympathetic vibration of each resonant circuit, such that transmission is performed by utilizing both magnetic field coupling and electric field coupling between a primary winding and a secondary winding. Operation at a switching frequency higher than a specific resonant frequency of an overall multi-resonant circuit allows a ZVS operation to be performed, enabling a significant reduction in switching loss and high-efficiency operation.
Abstract translation: 在具有减小的尺寸和增加的功率转换效率的开关电源装置中，使包括串联谐振电感器和串联谐振电容器的第一谐振电路和包括串联谐振电感器和串联谐振电容器的第二谐振电路谐振 彼此引起每个谐振电路的交感振动，使得通过利用初级绕组和次级绕组之间的磁场耦合和电场耦合来执行传输。 在高于整个多谐振电路的特定谐振频率的开关频率下的操作允许执行ZVS操作，能够显着降低开关损耗和高效率操作。
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公开(公告)号：US20130272031A1
公开(公告)日：2013-10-17
申请号：US13860719
申请日：2013-04-11
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Tatsuya HOSOTANI
IPC: H02M3/335
CPC classification number: H02M3/33569 , H02M1/34 , H02M2001/346 , Y02B70/1491
Abstract: A transformer that realizes ZVS operation includes a primary winding and a secondary winding. A control circuit turns switching elements on and off in a complimentary manner in order to repeatedly invert the voltage applied to the primary winding. A conduction path supplies a voltage excited in the secondary winding to a load connected between a high-potential side and a ground side of the secondary winding. A first rectifier diode has a rectification direction extending from the high-potential side toward the ground side of the load and is provided along the conduction path. A second rectifier diode and a capacitor, which are connected in series with each other, are connected in parallel with the secondary winding. An inductor is connected in parallel with the second rectifier diode. A rectification direction of the second rectifier diode matches the direction extending from the high-potential side to the ground side.
Abstract translation: 实现ZVS操作的变压器包括初级绕组和次级绕组。 控制电路以互补的方式使开关元件导通和截止，以便反复地反转施加到初级绕组的电压。 传导路径将次级绕组中激发的电压提供给连接在次级绕组的高电位侧和接地侧之间的负载。 第一整流二极管具有从负载的高电位侧向接地侧延伸的整流方向，沿着导通路径设置。 彼此串联连接的第二整流二极管和电容器与次级绕组并联连接。 电感器与第二整流二极管并联连接。 第二整流二极管的整流方向与从高电位侧向地侧延伸的方向相匹配。
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公开(公告)号：US20130182480A1
公开(公告)日：2013-07-18
申请号：US13737064
申请日：2013-01-09
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tatsuya HOSOTANI
IPC: H02M7/537
CPC classification number: H02M7/537 , H02M7/538 , H02M2007/4815 , Y02B70/1441
Abstract: In an AC power supply apparatus, first and second switching circuits connected in series to an input terminal to which a DC input power supply is connected include first and second rectification elements, respectively. A capacitor, an inductor, and a capacitive load are equivalently connected in series to the second switching circuit. The capacitor is charged after the first switching circuit is turned on before the second rectification element is turned off and the charged capacitor is caused to discharge after the second switching circuit is turned on before the second rectification element is turned off. The above operations are periodically repeated. The voltage of the capacitive load is reversed with current flowing during the charge and the discharge of the capacitor to adjust the on and off periods of the first and second switching circuits in order to supply desired AC voltage to the capacitive load.
Abstract translation: 在交流电源装置中，与直流输入电源连接的输入端子串联连接的第一和第二开关电路分别包括第一和第二整流元件。 电容器，电感器和电容性负载等效地与第二开关电路串联连接。 在第二整流元件关闭之前，在第一开关电路接通之后，电容器被充电，并且在第二整流元件断开之前第二开关电路接通之后，使充电电容器放电。 定期重复上述操作。 电容性负载的电压在充电期间的电流流过和电容器的放电反转，以调节第一和第二开关电路的接通和断开时段，以便向容性负载提供期望的AC电压。
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公开(公告)号：US20240396375A1
公开(公告)日：2024-11-28
申请号：US18792853
申请日：2024-08-02
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takahiro NAGAI , Tatsuya HOSOTANI
Abstract: A wireless power receiving device includes a receiving power shut-off circuit and an impedance adjusting circuit. When a smoothed voltage is less than a first voltage, the receiving power shut-off circuit causes a rectifying circuit to execute a rectifying operation. When the smoothed voltage is greater than or equal to the first voltage, the receiving power shut-off circuit causes the rectifying circuit to stop the rectifying operation and by stopping the rectifying operation of the rectifying circuit, protects a power receiving direct-current circuit from overvoltage. The impedance adjusting circuit suppresses an increase in a voltage between two ends of a power receiving coil and further protects a power receiving alternating-current circuit from overvoltage at the time of both executing and stopping the rectifying operation caused by the receiving power shut-off circuit. Thus, the impedance adjusting circuit protects both the power receiving alternating-current circuit and the power receiving direct-current circuit.
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Patent Agency Ranking
公开(公告)号：US20240204581A1
公开(公告)日：2024-06-20
申请号：US18590231
申请日：2024-02-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Norikazu SAKAMOTO , Tatsuya HOSOTANI , Hiroto YASUI
CPC classification number: H02J50/80 , H02J7/00045 , H02J50/12
Abstract: A wireless power transfer system includes a power transmission device and a power reception device. The power transmission device includes a power transmission circuit and a power transmission coil. The power reception device includes a power reception circuit and a power reception coil. The power reception device is arranged relative to the power transmission device such that the power reception coil electromagnetically couples with the power transmission coil. The power transmission circuit and the power reception circuit each set a power exclusive-use period and a signal insertion period. The power exclusive-use period is set as a main part of a repetition cycle of power transmission and reception, during which an interrupt signal for power transmission authentication is not used.
The signal insertion period is set as a localized part of the repetition cycle of power transmission and reception, during which the interrupt signal for power transmission authentication is inserted.-
公开(公告)号：US20240195282A1
公开(公告)日：2024-06-13
申请号：US18583563
申请日：2024-02-21
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tatsuya HOSOTANI , Yoshihiro FUJIWARA
CPC classification number: H02M1/0048 , H02M3/155 , H02M1/088
Abstract: A power supply system includes an MPU, multiple power conversion circuits, and multiple extended-control circuits. The MPU supplies a digital switching driving signal to the power conversion circuit, and supplies a digital switching driving signal to the power conversion circuit. The extended-control circuit, which includes a CR circuit, generates a switching driving signal which is delayed with respect to the digital switching driving signal, and supplies the switching driving signal to the power conversion circuit. The extended-control circuit, which includes a CR circuit, generates a switching driving signal which is delayed with respect to the digital switching driving signal, and supplies the switching driving signal to the power conversion circuit.
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公开(公告)号：US20240136925A1
公开(公告)日：2024-04-25
申请号：US18399221
申请日：2023-12-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yuki ISHIKURA , Tatsuya HOSOTANI , Hiroyuki TAKATSUJI
Abstract: A circuit board of a switching power supply device includes a positive terminal circuit pattern and a negative terminal circuit pattern that are provided on a component mount surface and respectively supply currents from input parts to two input terminals of a common mode choke coil. The positive terminal circuit pattern and the negative terminal circuit pattern are positioned in parallel and close to each other. The component mount surface of the circuit board includes a component mount surface side ground pattern arranged below the common mode choke coil. A heat dissipation ground surface of the circuit board includes a ground pattern and a plurality of heat dissipation conductor patterns. Input terminals and output terminals of the common mode choke coil are respectively electrically and thermally connected to the heat dissipation conductor patterns via through-hole conductors provided between the component mount surface and the heat dissipation ground surface.
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公开(公告)号：US20240088791A1
公开(公告)日：2024-03-14
申请号：US18353364
申请日：2023-07-17
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tatsuya HOSOTANI
CPC classification number: H02M3/1584 , H02M1/0009 , H02M1/088
Abstract: Converter units of a power supply system apparatus each perform feedback control using an individual voltage feedback loop. Master-slave control for synchronizing oscillation control signals is performed in such a manner that master control of the converter unit and slave control of the converter unit are performed. The oscillation control signals are set in such a manner that a phase difference occurs between a plurality of power conversion circuits in association with the number of power conversion circuits that are operate. The power supply system apparatus supplies power to a load, while causing the converter units to be synchronized with each other and performing a voltage conversion operation for converting the voltage of an input power supply using a plurality of power conversion circuits in the converter units.
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公开(公告)号：US20230327539A1
公开(公告)日：2023-10-12
申请号：US18335075
申请日：2023-06-14
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yuki ISHIKURA , Hiroyuki TAKATSUJI , Tatsuya HOSOTANI
Abstract: A switching power supply device includes an inverter circuit and a noise reduction circuit. The noise reduction circuit includes a first half-bridge capacitor circuit coupled to the DC input line, a second half-bridge capacitor circuit coupled to the AC output line, a first common-mode choke coil coupled between the first half-bridge capacitor circuit and the second half-bridge capacitor circuit, and an electrical path that electrically couples a middle point of the first half-bridge capacitor circuit with a middle point of the second half-bridge capacitor circuit.
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