公开(公告)号：US20190075648A1

公开(公告)日：2019-03-07

申请号：US16183471

申请日：2018-11-07

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takafumi NASU ,  Tatsuya HOSOTANI ,  Katsumi TANIGUCHI ,  Makoto TAKEOKA ,  Masaaki KANAO

IPC: H05K1/02 ,  H02J50/10 ,  H02J7/02 ,  H01F38/14 ,  H05K1/18 ,  H01Q7/00 ,  H01Q1/52 ,  G06K19/077 ,  G06K7/10

Abstract: A wireless module includes a substrate that includes a first portion, a second portion, and a first flexible portion connecting the first portion and the second portion to each other. The first portion includes a circuit element that is mounted on the first main surface and a circuit including at least the circuit element. The second portion includes a first coil connected to the circuit. The first portion and the second portion face each other. A magnetic sheet is disposed on a second main surface of the second portion, and a battery is disposed between the second main surface of the first portion and the magnetic layer.

公开(公告)号：US20180083491A1

公开(公告)日：2018-03-22

申请号：US15821381

申请日：2017-11-22

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Tatsuya HOSOTANI

IPC: H02J50/12 ,  H02J3/01

CPC classification number: H02J50/12 ,  H02J3/01 ,  H02M1/44 ,  H02M3/33576 ,  H02M2001/0058 ,  Y02B70/1491

Abstract: A power receiving rectifier circuit is configured in series with a power receiving resonance mechanism. A first power receiving device has a load with a small equivalent resistance value, and the frequency response of a voltage gain thereof, which is the ratio of direct-current output to input voltage, is double-peaked. A second power receiving device has a load with a large equivalent resistance value, and a single-peaked frequency response of a voltage gain thereof. For the first power receiving device, by setting a coupling coefficient between power receiving and transmitting coils, the voltage gain is determined by the positional relationship between one of the frequencies at maximum voltage gain and the operating frequency, whereas for second power receiving device, the frequency at maximum voltage gain is determined close to the operating frequency, and the voltage gain is determined by setting a coupling coefficient between power receiving and transmitting coils.

公开(公告)号：US20140376273A1

公开(公告)日：2014-12-25

申请号：US14480998

申请日：2014-09-09

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Tatsuya HOSOTANI ,  Naoki YAMAGUCHI

IPC: H02M3/335 ,  H02M1/32

CPC classification number: H02M3/33546 ,  H02H3/093 ,  H02M1/32 ,  H02M1/36 ,  H02M3/33507 ,  H02M2001/0058 ,  Y02B70/1491

Abstract: In a switching power supply apparatus, when it is detected at time t1 that a voltage Vis has exceeded a first threshold Vth1, a timer counting a period of time T1 is started, and the number times the input voltage Vis does not exceed Vth1 is started to be counted. When the timer expires before the count reaches a predetermined number, a first overcurrent protection operation is performed. When it is detected at time t2 that Vis has exceeded a second threshold Vth2, a second overcurrent protection operation is immediately performed. As a result, appropriate overcurrent protection is performed in accordance with the operating state of a load.

Abstract translation: 在开关电源装置中，当在时间t1检测到电压Vis已经超过第一阈值Vth1时，开始计时一段时间T1的定时器，并且开始输入电压Vis不超过Vth1的次数 要算 当定时器在计数达到预定数量之前到期时，执行第一过电流保护操作。 当在时间t2检测到Vis已经超过第二阈值Vth2时，立即执行第二过电流保护操作。 结果，根据负载的工作状态进行适当的过电流保护。

公开(公告)号：US20140247625A1

公开(公告)日：2014-09-04

申请号：US14256679

申请日：2014-04-18

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Tatsuya HOSOTANI

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M3/33569 ,  H02M3/33576 ,  H02M7/4826 ,  H02M2001/0058 ,  H02M2007/4815 ,  Y02B70/1433 ,  Y02B70/1491

Abstract: A primary side resonant circuit is formed by a primary side resonant inductor and a primary side resonant capacitor, and secondary side resonant circuits are formed by secondary side resonant inductors and secondary side resonant capacitors. Mutual inductances are formed equivalently through magnetic field resonant coupling between a primary winding and secondary windings, and a multi-resonant circuit that includes two or more LC resonant circuits is formed by a primary side circuit and a secondary side circuit. Electric power is transmitted from the primary side circuit to the secondary side circuit; resonant energy that is not transmitted from the primary winding and, of energy which the secondary winding has received, resonant energy that is not supplied to an output are each retained in the multi-resonant circuit; and, at the secondary side, the resonant energy is retained in a current path in which a rectifying element is not formed in series.

Abstract translation: 初级侧谐振电路由初级侧谐振电感器和初级侧谐振电容器构成，次级侧谐振电路由次级侧谐振电感器和次级侧谐振电容器构成。 互感通过初级绕组和次级绕组之间的磁场谐振耦合等效地形成，并且由初级侧电路和次级侧电路形成包括两个或更多个LC谐振电路的多谐振电路。 电力从初级侧电路传输到次级侧电路; 没有从初级绕组传递的谐振能量和次级绕组接收到的能量不被提供给输出的谐振能量分别保持在多谐振电路中; 并且在次级侧，谐振能量被保持在不形成整流元件的电流路径中。

公开(公告)号：US20130301306A1

公开(公告)日：2013-11-14

申请号：US13941765

申请日：2013-07-15

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Tatsuya HOSOTANI

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M3/07 ,  H02M3/33576 ,  H02M3/338 ,  H02M2001/0058 ,  Y02B70/1491

Abstract: In a switching power supply device with reduced size and increased power conversion efficiency, a secondary-side rectifier circuit includes an adder-rectifier circuit that stores a voltage generated in a secondary winding in a capacitor as electrostatic energy in an on period of one of a high-side and low-side switching circuits or, and adds the voltage in the capacitor and the voltage generated in the secondary winding and outputs the sum as a direct-current voltage during in an on period of the other of the high-side and low-side switching circuits. A switching control circuit adjusts an output power to be output from the secondary-side rectifier circuit, by using on-period ratio controller that controls a proportion of periods during which the respective high-side side and low-side switching elements are brought into a conductive state.

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，次级侧整流器电路包括加法器 - 整流器电路，其将在次级绕组中产生的电压存储在电容器中作为静电能在一个 高侧和低侧开关电路，或者在电容器中产生的电压和在次级绕组中产生的电压相加，并且在高侧的另一个的导通时段期间输出该和作为直流电压，以及 低端开关电路。 开关控制电路通过使用控制各高侧侧开关元件和低侧开关元件的周期的比例的周期比率控制器来调整从次级侧整流电路输出的输出功率 导电状态。

公开(公告)号：US20130257393A1

公开(公告)日：2013-10-03

申请号：US13851119

申请日：2013-03-27

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Tatsuya HOSOTANI

IPC: H02M3/155

CPC classification number: H02M3/155 ,  H02M3/156

Abstract: In a switching power supply apparatus, a switching element is turned on/off to intermittently conduct current input via an inductor. Current input during a period in which the switching element is turned off is supplied to an electrolytic capacitor via a conduction path. A rectifier diode is provided in the conduction path to face toward the electrolytic capacitor. An inductor is provided in the conduction path to be connected in series with the rectifier diode. A high speed diode has a reverse recovery time shorter than the reverse recovery time of the rectifier diode, and is connected in parallel with the inductor to face toward the electrolytic capacitor.

Abstract translation: 在开关电源装置中，开关元件被导通/截止以间断地通过电感器传导电流输入。 在开关元件关断期间的电流输入通过导通路径供给到电解电容器。 在导通路径中提供整流二极管以面向电解电容器。 电感器设置在与整流二极管串联连接的导通路径中。 高速二极管具有比整流二极管的反向恢复时间短的反向恢复时间，并且与电感器并联连接以面向电解电容器。

公开(公告)号：US20130128623A1

公开(公告)日：2013-05-23

申请号：US13740363

申请日：2013-01-14

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Tatsuya HOSOTANI

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M3/33523 ,  H02M3/33569 ,  H02M2001/0032 ,  Y02B70/16

Abstract: An external circuit is connected to a polarity detection terminal of a switching control IC. An increased value of the voltage of a pulse signal input to the polarity detection terminal at the time of the activation of a power supply changes in response to this external circuit. Accordingly, owing to the external circuit connected to the polarity detection terminal, the validity/invalidity of a standby mode is set. When the standby mode is validated, a blanking frequency changes in response to the voltage of a feedback terminal, and a switching loss in a light load is reduced. Accordingly, a switching control circuit and a switching power supply apparatus are configured that are able to set the validity/invalidity of the standby mode or select the method of the standby mode without using a dedicated terminal.

Abstract translation: 外部电路连接到开关控制IC的极性检测端子。 在激活电源时输入到极性检测端子的脉冲信号的电压的增加值响应于该外部电路而改变。 因此，由于与极性检测端子连接的外部电路，设定待机模式的有效/无效。 当待机模式被验证时，消隐频率响应于反馈端的电压而变化，并且轻负载中的开关损耗减小。 因此，配置能够设定待机模式的有效/无效的开关控制电路和开关电源装置，或者不使用专用端子来选择待机模式的方法。