Title:
SWITCHING POWER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2019115150
Kind Code:
A
Abstract:
To provide a switching power supply device capable of miniaturizing a device by eliminating necessity of a noise removal filter of a relay drive driver circuit.SOLUTION: A switching power supply device having a plurality of power supply circuits corresponding to each phase of an AC power supply of plural phases, includes: a switching circuit capable of switching a phase connected to the power supply circuit which does not correspond to an optional one phase of the AC power supply of the plural phases among the plural power supply circuits to the optional one phase or a phase to which the power supply circuits corresponds; an inrush current prevention circuit which is provided on a power source line on a negative electrode side of the AC power supply of the plural phases and a position of the AC power supply side of the plural phases than a connecting point to which the plural power source circuits are respectively connected, and prevents inrush current; and a filter circuit provided between the AC power supply of the plural phases and the inrush current prevention circuit, in which all the lines of the plural phases are magnetically coupled.SELECTED DRAWING: Figure 2
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Inventors:
TAZAKI SHINTARO
MOCHIZUKI KENTO
MOCHIZUKI KENTO
Application Number:
JP2017246187A
Publication Date:
July 11, 2019
Filing Date:
December 22, 2017
Export Citation:
Assignee:
PANASONIC IP MAN CORP
International Classes:
H02M7/06; H02M7/12
Domestic Patent References:
| JP2017169350A | 2017-09-21 | |||
| JP2017038500A | 2017-02-16 | |||
| JP2001178122A | 2001-06-29 | |||
| JPH10248265A | 1998-09-14 | |||
| JPH03283392A | 1991-12-13 | |||
| JPS55162425U | 1980-11-21 | |||
| JP2016208505A | 2016-12-08 |
Foreign References:
| WO2013018185A1 | 2013-02-07 | |||
| US20140140112A1 | 2014-05-22 |
Attorney, Agent or Firm:
Koichi Washida