Title:
ON-VEHICLE ELECTRICAL LOAD DRIVE CONTROL UNIT
Document Type and Number:
Japanese Patent JP3845261
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To detect heat release from a current flowing through a power MOS- FET by detecting the temperature change of a thermoelectric device which is built in a power MOS-FET by measuring a voltage change, and to adjust gate drive signals to a constant value by on/off controlling the gate drive signals of the power MOS-FET, after the voltage of the thermoelectric device becomes stable.
SOLUTION: A power MOS-FET is connected to a power supply B, in series together with a load L to turn a power source on or off for the load L. A thermoelectric element D, whose voltage is decreased by heat released from the power MOS-FET when it is energized, is built in the power MOS-FET, a control means COT for on/off controlling the gate drive signals of the MOS- FET on, on the basis of a voltage reduction in the thermoelectric element D is provided, and the gate drive signals are made constant after the voltage gets stable.
Inventors:
Hiroo Yabe
Eiji Nagatomo
Eiji Nagatomo
Application Number:
JP2001055280A
Publication Date:
November 15, 2006
Filing Date:
February 28, 2001
Export Citation:
Assignee:
Yazaki Corporation
International Classes:
G01R31/02; B60R16/02; H03K17/08; H02H5/04; H03K17/082; H03K17/687; (IPC1-7): H03K17/08; B60R16/02; G01R31/02; H03K17/687
Domestic Patent References:
| JP60146527A | ||||
| JP61059323A | ||||
| JP5041096U | ||||
| JP1041797A | ||||
| JP2000299627A |
Attorney, Agent or Firm:
Hideo Takino
Hiroshi Ochi
Sadao Matsumura
Isamu Kakiuchi
Hiroshi Ochi
Sadao Matsumura
Isamu Kakiuchi
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