公开(公告)号：US20190294134A1

公开(公告)日：2019-09-26

申请号：US16464675

申请日：2017-10-24

Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Katsuya OYAMA ,  Mitsuhiko WATANABE ,  Takeshi KONNO ,  Yasushi SUGIYAMA ,  Chihiro SATO

IPC: G05B19/042 ,  H03K17/08 ,  H03K17/687 ,  B60R16/023

Abstract: The present disclosure provides a control device having versatility and extensibility of a load driving circuit. A control device includes a processor and an IC, in which the IC includes: a communication circuit that transmits a control signal from the processor; a first drive circuit that drives a first load; a second drive circuit that drives a second load and is provided outside the IC separately from the first drive circuit; and a third drive circuit that controls the second drive circuit, the processor transmits channel information corresponding to the number of switches of the second drive circuit to the IC, and the communication circuit changes the number of channels of the third drive circuit on the basis of the channel information.

公开(公告)号：US20180106232A1

公开(公告)日：2018-04-19

申请号：US15636102

申请日：2017-06-28

Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Katsuya OYAMA ,  Chihiro SATO ,  Mitsuhiko WATANABE

IPC: F02P9/00 ,  F02D41/26 ,  H04L1/08 ,  H04L29/08

CPC classification number: F02P9/002 ,  F02D41/26 ,  F02D41/266 ,  F02D2041/286 ,  F02D2250/12 ,  H04L1/08 ,  H04L29/08

Abstract: The invention, while reducing noise, suppresses a load increase in a processor and a delay in drive control. An engine control unit includes a processor, a driving circuit including a switching element to drive a load such as a fuel injector and an ignition device, and a communication circuit that transmits control signals from the processor to the driving circuit via serial communication. The control signals each include a command frame for controlling the driving circuit and a data frame for driving the load. If a predetermined bits in each of the data frames received from the processor at predetermined time intervals are determined to be the same twice in succession, the engine control unit changes a state of a driving signal ‘Drive’ for driving the load and thereby changes an operating state of the switching element.

公开(公告)号：US20160071642A1

公开(公告)日：2016-03-10

申请号：US14785528

申请日：2013-04-25

Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Kiyoshi AIKI ,  Ayumu HATANAKA ,  Takuya MAYUZUMI ,  Katsuya OYAMA ,  Ryosuke ISHIDA ,  Yasushi SUGIYAMA

IPC: H01F7/20

CPC classification number: H01F7/204 ,  F02D41/20 ,  F02D2041/001 ,  F02D2041/2041 ,  H02M1/44 ,  H02M3/155 ,  H02M2003/1555 ,  H03K17/162

Abstract: The present invention is to provide a magnet coil drive control device that can efficiently suppress conduction noise while reducing the capacitance of a capacitor. A capacitor and an impedance element are arranged in series on the connecting line connecting the positive electrode line and the negative electrode line of a DC power supply, the connecting line between the capacitor and the impedance element is connected to one end of a magnet coil via a freewheeling diode, and the portion between the freewheeling diode and the one end of the magnet coil is connected to the positive electrode line or the negative electrode line by a switching element. Conduction noise caused by the driving current of the magnet coil can be suppressed by the impedance element, and the capacitance of the capacitor can be further reduced. Accordingly, the magnet coil drive control device can be made smaller in size.

Abstract translation: 本发明提供一种能够有效地抑制导通噪声同时降低电容器的电容的磁体线圈驱动控制装置。 电容器和阻抗元件串联在连接直流电源的正极线和负极线的连接线上，电容器和阻抗元件之间的连接线连接到电磁线圈通孔的一端 续流二极管，续流二极管和电磁线圈的一端之间的部分通过开关元件连接到正极线或负极线。 可以通过阻抗元件来抑制由电磁线圈的驱动电流引起的导通噪声，并且可以进一步降低电容器的电容。 因此，可以使电磁线圈驱动控制装置的尺寸更小。