公开(公告)号：US20170288575A1

公开(公告)日：2017-10-05

申请号：US15467565

申请日：2017-03-23

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroshi KITADA

IPC: H02M7/5387 ,  H02M1/12 ,  H02M7/00

CPC classification number: H02M7/5387 ,  H02M1/12 ,  H02M1/126 ,  H02M7/003

Abstract: A power converter includes: a plurality of external terminals; a grounded earth terminal; a power conversion circuit; a ground conductor; and a plurality of inductors. A plurality of nodes of the power conversion circuit are connected to the respective plurality of external terminals. The power conversion circuit performs power conversion by switching received power. A plurality of inductors are inserted between the plurality of external terminals and the plurality of nodes. Further, another inductor is inserted between the ground conductor and the earth terminal. In this way, there can be provided a power converter that provides a sufficient noise reduction effect also in a high frequency region.

公开(公告)号：US20200321856A1

公开(公告)日：2020-10-08

申请号：US16909992

申请日：2020-06-23

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroyuki TAKATSUJI ,  Hiroshi KITADA ,  Naomichi ENOKI ,  Yoshihiro IMANISHI

IPC: H02M1/42 ,  H02M3/28 ,  H02M7/217 ,  H03H7/01 ,  H02M1/12 ,  H01F17/00

Abstract: An on-board charger includes input ports, output ports, an AC-DC converter, an isolated DC-DC converter, a first filter, and a second filter. The first filter is connected to the input ports. The first filter includes a first common mode choke coil, a first across-the-line capacitor, and first line bypass capacitors. The second filter is connected between the isolated DC-DC converter and each of the output ports. The second filter includes a second common mode choke coil and second line bypass capacitors.

公开(公告)号：US20170287628A1

公开(公告)日：2017-10-05

申请号：US15467407

申请日：2017-03-23

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroshi KITADA

IPC: H01F27/33 ,  H01F27/28 ,  H01F27/29

CPC classification number: H01F27/29 ,  H01F17/0033 ,  H01F27/2828 ,  H01F27/362 ,  H01F2017/0093 ,  H01F2017/065

Abstract: A coil-included terminal block allowing for a noise suppression effect. The coil-included terminal block includes: a terminal attachment member to which at least three terminal pairs are attached, each of the terminal pairs including a terminal and another terminal; and a plurality of coils configured to connect the terminals of the at least three terminal pairs to the respective other terminals of the at least three terminal pairs.

公开(公告)号：US20180145716A1

公开(公告)日：2018-05-24

申请号：US15788840

申请日：2017-10-20

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kota SAITO ,  Yoshihiro IMANISHI ,  Hiroshi KITADA ,  Hiroyuki TAKATSUJI ,  Masashi OMURO

IPC: H04B1/40 ,  H03H7/06

CPC classification number: H04B1/40 ,  H03H7/06 ,  H04B15/04

Abstract: A signal transmission and reception element transmits and receives a differential signal. Two transmission lines transmit the differential signal between the signal transmission and reception element and a connector. The signal transmission and reception element is connected to an external apparatus with the connector interposed therebetween. A noise generation source generates noise in a wireless band, which is coupled to the transmission lines. An antenna has a gain in a frequency band of the noise which is generated in the noise generation source. A wireless signal processing circuit processes a signal received by the antenna. An absorption-type filter that is mounted on the transmission lines absorbs noise mixed in the transmission lines.