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Title:
ELECTRONIC CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/176353
Kind Code:
A1
Abstract:
The present invention implements an electronic control device capable of reducing common mode noise generated through the interior of an apparatus and caused by coupling to a virtual ground surface. A high-speed transceiver 102 of an electronic control device 1 is connected to a relative apparatus 105 via a differential transmission path 106, an insulated power source 101 and a termination circuit 103 are connected to the transceiver 102, the secondary side of the insulated power source 101 is connected to the transceiver 102, and the primary side thereof is connected to a virtual ground surface 100. The transceiver 102 is separated from the virtual ground surface 100 by the insulated power source 101 and coupled thereto by the impedance of a grounded circuit 104. The impedance of the grounded circuit 104 is higher than the line-to-line common impedance of the differential transmission path 106, and the common impedance of the differential transmission path 106 is settable such that the line-to-line common impedance between lines 107 and 108 of the differential transmission path 106 becomes minimum. Electric currents flowing to the transceiver 102 are coupled between the differential transmission paths 107 and 108 to cut off a path circulating through the transceiver 102.

Inventors:
YAMAKAWA Takeshi (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
SAKAMOTO Hideyuki (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
Application Number:
JP2019/003289
Publication Date:
September 19, 2019
Filing Date:
January 31, 2019
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
H04B3/30
Domestic Patent References:
WO2006040869A12006-04-20
Foreign References:
JP2014199988A2014-10-23
Attorney, Agent or Firm:
TODA Yuji (6-1, Marunouchi 1-chome, Chiyoda-k, Tokyo 20, 〒1008220, JP)
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