Title:
SWITCHING POWER SUPPLY CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2003/092146
Kind Code:
A1
Abstract:
A switching power supply circuit which can ensure an output power of a specified voltage in quick response even to an abrupt and significant variation in load. The switching power supply controls the output voltage Vo being supplied to a load to a specified target level by supplying the load with an input current while switching periodically and controlling the on/off time ratio (t1/t2) of switching variably, wherein the control of on/off time ratio is performed independently every conduction period T.
Inventors:
NAKAO FUMIAKI (JP)
SUZUKI TETSUYA (JP)
YAMASHITA YASUO (JP)
TAKEHARA KAZUO (JP)
SUZUKI TETSUYA (JP)
YAMASHITA YASUO (JP)
TAKEHARA KAZUO (JP)
Application Number:
PCT/JP2003/005194
Publication Date:
November 06, 2003
Filing Date:
April 23, 2003
Export Citation:
Assignee:
FDK CORP (JP)
NAKAO FUMIAKI (JP)
SUZUKI TETSUYA (JP)
YAMASHITA YASUO (JP)
TAKEHARA KAZUO (JP)
NAKAO FUMIAKI (JP)
SUZUKI TETSUYA (JP)
YAMASHITA YASUO (JP)
TAKEHARA KAZUO (JP)
International Classes:
H02M3/28; H02M3/137; H02M3/156; H02M3/335; (IPC1-7): H02M3/28
Foreign References:
| JPS634186U | 1988-01-12 | |||
| JPH06233148A | 1994-08-19 | |||
| JPS52132662A | 1977-11-07 | |||
| JPH09298872A | 1997-11-18 | |||
| JP2002051551A | 2002-02-15 | |||
| JP2000308335A | 2000-11-02 |
Attorney, Agent or Firm:
ISSHIKI & CO. (12-7 Shinbashi 2-chom, Minato-ku Tokyo, JP)
Download PDF: