Invention Grant
- Patent Title: Power supply control circuit, and electronic control device, power supplying circuit, and power control integrated circuit equipped with power supply control circuit
- Patent Title (中): 电源控制电路，电子控制装置，供电电路和配有电源控制电路的电源控制集成电路
-
Application No.: US11802216Application Date: 2007-05-21
-
Publication No.: US07800878B2Publication Date: 2010-09-21
- Inventor: Kazuhiro Komatsu , Yuichiro Shimizu , Daisuke Enomoto
- Applicant: Kazuhiro Komatsu , Yuichiro Shimizu , Daisuke Enomoto
- Applicant Address: JP Kobe
- Assignee: Fujitsu Ten Limited
- Current Assignee: Fujitsu Ten Limited
- Current Assignee Address: JP Kobe
- Agency: Oliff & Berridge, PLC
- Priority: JP2006-141653 20060522
- Main IPC: H02H3/08
- IPC: H02H3/08 ; H02H3/00
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.
Public/Granted literature
Information query
