Title:
LINEAR SOLENOID DRIVE DEVICE
Document Type and Number:
Japanese Patent JP2017005638
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve current detection accuracy in a configuration in which a linear solenoid drive device detects a current which flows through a linear solenoid.SOLUTION: In the linear solenoid drive device, in which one end of a linear solenoid coil is connected to power through a positive electrode side switching element, whereas another coil end is connected to the ground through a negative electrode side switching element 20, a reflux diode 40 is connected in parallel to one switching element out of the positive electrode side switching element and the negative electrode side switching element 20 and the coil. The linear solenoid drive device includes a current detection circuit which is connected to a current monitor part 21, which is defined to be a part disposed on a part of the one switching element, and detects a current flowing through the coil. The reflux diode 40 is overlaid on the upper side of the part of the one switching element in which the current monitor part 21 is disposed, with a vertically piled structure.SELECTED DRAWING: Figure 3A
Inventors:
GOTO TOSHIO
Application Number:
JP2015120719A
Publication Date:
January 05, 2017
Filing Date:
June 16, 2015
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H03K17/695; F16K31/06; H01F7/18; H03K17/14
Attorney, Agent or Firm:
Patent Corporation yki International Patent Office