Title:
負荷駆動回路
Document Type and Number:
Japanese Patent JP4469886
Kind Code:
B2
Abstract:
According to the present invention, the operation of a diagnostic circuit within a load drive circuit, which has been built into an electronic control device, is checked without modifying the electronic control device or the like. The load drive circuit, which drives a load such as a solenoid using a DC power supply as a power supply, includes a drive circuit and a diagnostic circuit which is independently provided within the drive circuit. Upon input of a drive-stop signal from a control circuit that controls the drive circuit, the operation of at least the drive circuit stops, so that whether the diagnostic circuit, which diagnoses the condition of the load, is normally operating or not is checked in a condition in which the load drive circuit has been built into the electronic control device.
Inventors:
Naotatsu Nakata
Masahiro Sasaki
Takuya Mayuzumi
Mitsuhiko Watanabe
Ryoichi Oura
Masahiro Sasaki
Takuya Mayuzumi
Mitsuhiko Watanabe
Ryoichi Oura
Application Number:
JP2007244358A
Publication Date:
June 02, 2010
Filing Date:
September 20, 2007
Export Citation:
Assignee:
Hitachi Automotive Systems, Ltd.
International Classes:
H02P7/06; B60R16/02; F02D45/00
Domestic Patent References:
| JP2006042446A | ||||
| JP2001304025A | ||||
| JP2005287284A |
Attorney, Agent or Firm:
Yusuke Hiraki