SWITCHING POWER SOURCE DEVICE - MURATA MANUFACTURING CO

Title:

SWITCHING POWER SOURCE DEVICE

Document Type and Number:

WIPO Patent Application WO/2013/114710

Kind Code:

A1

Abstract:

The invention is provided with: an insulated converter (2B) for converting a power source voltage and outputting a direct current voltage, the power conversion efficiency of a rated load having higher efficiency properties than those of the power conversion efficiency of a light load; an FET (13) for switching between starting and stopping the supply of the power source voltage to the insulated converter (2B); a secondary cell (3) for storing the direct current voltage outputted from the insulated converter (2B); a voltage detection unit (6) for detecting the amount of charge of the secondary cell (3); and an MCU (8) for switching the FET (13) on the basis of the amount of charge of the secondary cell (3). When the secondary cell (3) is fully charged, a switching power source device (1) turns the FET (13) off and outputs the direct current voltage with which the secondary cell (3) is charged. When the secondary cell (3) falls below a threshold value, the switching power source device (1) turns on the FET (13) and outputs the direct current voltage converted in the insulated converter (2B). The switching power source device (1) can thereby effectively minimize power usage.

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Inventors:

HOSOTANI TATSUYA (JP)

Application Number:

PCT/JP2012/080270

Publication Date:

August 08, 2013

Filing Date:

November 22, 2012

Export Citation:

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Assignee:

MURATA MANUFACTURING CO (JP)

International Classes:

H02J7/34; H01M10/44; H01M10/48; H02M3/28; H02M7/21; H02M1/00

Foreign References:

JP2007068338A	2007-03-15
JP2003087997A	2003-03-20
JP2008278631A	2008-11-13
JP2009153339A	2009-07-09

Attorney, Agent or Firm:

Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)

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