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Title:
POWER SUPPLY CONTROL UNIT AND MOTOR DRIVER EQUIPPED WITH THE SAME
Document Type and Number:
Japanese Patent JP2009044914
Kind Code:
A
Abstract:

To suppress a rush current when a power supply is fed, with a simple circuit configuration and control configuration.

In a power supply control unit 20, a semiconductor switching element 15 is turned on/off, according to control signal Spc set in binary. The power supply control unit 20 turns on the semiconductor switching element 15, in place of a system main relay SMR1 during a specified period, immediately after a power supply is fed to supply a current from a battery 10 to a load 30. Meanwhile, when the specified period is expired, the semiconductor switching element 15 is turned off, and the system main relay SMR1 is turned on. The on-resistance of the semiconductor switching element 15 is designed to be a resistance value that is higher than that of the normal semiconductor switching element, so that charge current in a capacitor 42 which is to become the rush current, immediately after a power supply is fed, can be suppressed to a specified value or less.


Inventors:
YOSHINAGA FUMITAKA
HIROSE SATOSHI
Application Number:
JP2007209463A
Publication Date:
February 26, 2009
Filing Date:
August 10, 2007
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
H02J1/00; H02H9/02; H02M7/48; H02P6/06; H02P6/08; H02P6/28
Attorney, Agent or Firm:
深見 久郎
森田 俊雄
武藤 正



 
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