Title:
SWITCHING POWER SUPPLY DEVICE AND ELECTRON DEVICE
Document Type and Number:
WIPO Patent Application WO/2006/006289
Kind Code:
A1
Abstract:
A transformer (T) includes a primary winding (N1) connected in series to a first switching element (Q1) and a secondary winding (N2) having a rectification circuit (2) and an output voltage control circuit (3) for detecting an output voltage and feeding it back to a control circuit (4). The control circuit (4) includes an ON-period control circuit (6) for turning off the first switching element (Q1) in the ON-state according to the feedback signal from the output voltage control circuit (3) and an OFF-period control circuit (5) for delaying the turn ON of the first switching element (Q1) according to the same feedback signal and controlling the OFF-period.
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Inventors:
NISHIDA AKIO (JP)
KITAO FUMI (JP)
TAKEMURA HIROSHI (JP)
KITAO FUMI (JP)
TAKEMURA HIROSHI (JP)
Application Number:
PCT/JP2005/007496
Publication Date:
January 19, 2006
Filing Date:
April 20, 2005
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
NISHIDA AKIO (JP)
KITAO FUMI (JP)
TAKEMURA HIROSHI (JP)
NISHIDA AKIO (JP)
KITAO FUMI (JP)
TAKEMURA HIROSHI (JP)
International Classes:
H02M3/28; (IPC1-7): H02M3/28
Foreign References:
| JP2002359974A | 2002-12-13 | |||
| JP2002369517A | 2002-12-20 | |||
| JP2004080941A | 2004-03-11 | |||
| JPH11313483A | 1999-11-09 |
Attorney, Agent or Firm:
Komori, Hisao (Noninbashi Chuo-k, Osaka-shi Osaka 11, JP)
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