Title:
SWITCHING POWER SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/124555
Kind Code:
A1
Abstract:
To obviate the need for a noise reduction filter of a relay drive driver circuit and reduce the size of a device, this switching power supply device is provided with a plurality of power supply circuits corresponding to each phase of a multi-phase AC power supply, wherein the switching power supply device is provided with: a switching circuit that is capable of switching a phase connected to a power supply circuit not corresponding to one discretionary phase of the multi-phase AC power supply, from among the plurality of power supply circuits, to the one discretionary phase or to the phase to which the power supply circuit corresponds; an inrush current prevention circuit for preventing inrush current, the inrush current prevention circuit being provided on a negative-electrode-side power supply line of the multi-phase AC power supply and at a position further toward the multi-phase AC power supply than is a connection point to which each of the plurality of power supply circuits are connected; and a filter circuit provided between the multi-phase AC power supply and the inrush current prevention circuit, the filter circuit having all lines of the plurality of phases magnetically coupled thereto.
Inventors:
TAZAKI SHINTARO
MOCHIZUKI KENTO
MOCHIZUKI KENTO
Application Number:
PCT/JP2018/047363
Publication Date:
June 27, 2019
Filing Date:
December 21, 2018
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02M7/06; H02M7/12
Domestic Patent References:
| WO2013018185A1 | 2013-02-07 |
Foreign 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 | |||
| US20140140112A1 | 2014-05-22 |
Attorney, Agent or Firm:
WASHIDA, Kimihito (JP)
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