Title:
POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/169395
Kind Code:
A1
Abstract:
In the present invention a reverse current prevention circuit (2; 102) is equipped with MOSFETs (21, 22; 221, 222; 621, 622; 721, 722) and an on-off control unit (23). When the on-off control unit applies an on-control voltage to the gates of the MOSFETs a main power supply input from a main power supply line is output to a shared connection node via the MOSFETs, and when the on-off control unit applies an off-control voltage to the gates of the MOSFETs the electrical connection between the main power supply line and the shared connection node is interrupted, thereby preventing reverse current. Diodes (6, 7; 6, 7, 31, 32) are connected such that a forward current flows from a sub power supply line toward the shared connection node and a reverse current is prevented. The voltage drop of the main power supply when the on-off control unit applies the on-control voltage to the gates of the MOSFETs is set lower than the voltage drop of the sub power supply due to the diodes.
Inventors:
TSUJIOKA TERUHIRO (JP)
Application Number:
PCT/JP2017/007135
Publication Date:
October 05, 2017
Filing Date:
February 24, 2017
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02J7/00; B60R16/03; H02J1/00
Foreign References:
| JPH07194027A | 1995-07-28 | |||
| JP2013215095A | 2013-10-17 | |||
| JP2009183020A | 2009-08-13 | |||
| JP2010098827A | 2010-04-30 |
Attorney, Agent or Firm:
SATO INTERNATIONAL PATENT FIRM (JP)
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