Title:
CIRCUIT MODULE
Document Type and Number:
WIPO Patent Application WO/2010/146678
Kind Code:
A1
Abstract:
The occurrence of inrush currents is precluded with reliability. In order to accomplish this, there are included to-be-controlled circuits (22a, 22b) that start their operations when a power supply voltage reaches a target value; a current sink circuit (26) that consumes a current (I6) supplied thereto; and a power supply activation control part (27). The power supply activation control part (27) increases, at a given rate, the current flowing through the current sink circuit (26) before the to-be-controlled circuits (22a, 22b) start their operations. When the amount of the current flowing through the current sink circuit (26) becomes equal to the amount of a current that increases because the to-be-controlled circuits (22a, 22b) start their operations because the power supply voltage reaches the target value, the power supply activation control part (27) causes the to-be-controlled circuits (22a, 22b) to start their operations and cuts off the supply of the current to the current sink circuit (26) at the same time.
Inventors:
AKIZAWA MASARU (JP)
SHIMIZU KAZUYOSHI (JP)
SHIMIZU KAZUYOSHI (JP)
Application Number:
PCT/JP2009/061045
Publication Date:
December 23, 2010
Filing Date:
June 17, 2009
Export Citation:
Assignee:
FUJITSU OPTICAL COMPONENTS LTD (JP)
AKIZAWA MASARU (JP)
SHIMIZU KAZUYOSHI (JP)
AKIZAWA MASARU (JP)
SHIMIZU KAZUYOSHI (JP)
International Classes:
G06F1/18; G05F1/10; H03K17/16
Foreign References:
| JP2003330555A | 2003-11-21 | |||
| JP2007179345A | 2007-07-12 | |||
| JP2004046616A | 2004-02-12 |
Attorney, Agent or Firm:
SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
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