Title:
電源制御回路及び電源制御回路を備えた電子制御装置
Document Type and Number:
Japanese Patent JP4305875
Kind Code:
B2
Abstract:
A power supply control circuit is configured including a MOS-FET (61) connected between a DC power supply (10) and a load circuit (31) so that a body diode (D300) formed between the drain and the source is in a forward direction; and a holding circuit (62) for maintaining the ON state of the MOS-FET (61) for a predetermined time when the power supply from the DC power supply (10) is stopped; where heat generation of the switching element by the surge voltage is suppressed when the surge voltage is generated to prevent breakdown of the switching element while preventing breakdown of internal circuits with respect to reverse connection of the power supply.
Inventors:
Kazuhiro Komatsu
Yuichiro Shimizu
Enomoto Taiho
Yuichiro Shimizu
Enomoto Taiho
Application Number:
JP2006141653A
Publication Date:
July 29, 2009
Filing Date:
May 22, 2006
Export Citation:
Assignee:
Fujitsu Ten Co., Ltd.
International Classes:
H02H11/00; H02H9/04
Domestic Patent References:
| JP2003037933A | ||||
| JP5259864A | ||||
| JP2000138574A | ||||
| JP8223935A | ||||
| JP3218226A | ||||
| JP7271459A |
Attorney, Agent or Firm:
Kaoru Hashimoto