Title:
電源装置、及び電源制御方法
Document Type and Number:
Japanese Patent JP6507030
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent an excessive current (through current) from flowing to a primary-side switching element under a light load.SOLUTION: A power supply device comprises a DC/DC converter. The DC/DC converter comprises: a full bridge circuit; a transformer including a primary-side coil to which the full bridge circuit is connected, and a secondary-side coil which is insulated from the primary-side coil; a synchronous rectifier circuit which is connected to the secondary-side coil; and a control part which controls a first switching element and a second switching element that are connected to a first end of the primary-side coil by a predetermined fixed duty, controls a third switching element and a fourth switching element that are connected to a second end of the primary-side coil by pulse width modulation, and turns on a fifth switching element and a sixth switching element that the synchronous rectifier circuit includes, for at least a predetermined period just before the third switching element and the fourth switching element are turned off.SELECTED DRAWING: Figure 1
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Inventors:
Wu Yongdong
Takamasa Kasai
Takamasa Kasai
Application Number:
JP2015103743A
Publication Date:
April 24, 2019
Filing Date:
May 21, 2015
Export Citation:
Assignee:
Shindengen Industry Co., Ltd.
International Classes:
H02M3/28; H02M3/335
Domestic Patent References:
| JP2014176226A | ||||
| JP2013252000A | ||||
| JP2004215469A |
Foreign References:
| WO2010137278A1 | ||||
| US4953068 |
Other References:
位相シフト・フルブリッジ,[online],日本テキサス・インスツルメンツ株式会社,2013年 4月16日,P.4-P.16,[retrieved on 2018.09.06], Retrieved from the Internet,URL,http://www.tij.co.jp/jp/lit/ug/jaju166/jaju166.pdf
Attorney, Agent or Firm:
Sumio Tanai
Yasushi Matsunuma
Toshio Komuro
Yasushi Matsunuma
Toshio Komuro