Title:
DC-DC CONVERTER CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2011/074081
Kind Code:
A1
Abstract:
A DC-DC converter circuit is provided with: first and second switch elements (S1, S2); an output transformer (T) provided with a first primary winding (P1) connected in series between the positive electrodes of the first and the second switch elements (S1, S2), a second primary winding (P2) connected in series between the negative electrodes of the switch elements and a secondary winding (S) and tertiary windings (n3, n4) for the purpose of obtaining output voltages; a first voltage source (C1) which is connected between a first connecting point where the first primary winding (P1) is connected to the second switch element (S2), and the first switch element (S1), and applies a voltage to the first switch element through the first primary winding; a second voltage source (C2) which is connected to an area symmetrical to the first voltage source (C1); a control unit (CT) which alternately turns on and off the first and the second switch elements (S1, S2); and first and second regenerative snubber circuits (SN1, SN2) which regenerate the stored charges of snubber capacitors (C3, C4) to the voltage sources (C1, C2). The regenerative snubber circuits (SN1, SN2) are provided with third and fourth switch elements (S3, S4) driven by the output voltages from the tertiary windings (n3, n4).
Inventors:
KATSUSHIMA HAJIME (JP)
FUJIYOSHI TOSHIKAZU (JP)
MORIMOTO KENJI (JP)
YAMAMOTO HAJIME (JP)
YAMAMURA SATOSHI (JP)
FUJIYOSHI TOSHIKAZU (JP)
MORIMOTO KENJI (JP)
YAMAMOTO HAJIME (JP)
YAMAMURA SATOSHI (JP)
Application Number:
PCT/JP2009/070946
Publication Date:
June 23, 2011
Filing Date:
December 16, 2009
Export Citation:
Assignee:
SANSHA ELECTRIC MFG CO LTD (JP)
KATSUSHIMA HAJIME (JP)
FUJIYOSHI TOSHIKAZU (JP)
MORIMOTO KENJI (JP)
YAMAMOTO HAJIME (JP)
YAMAMURA SATOSHI (JP)
KATSUSHIMA HAJIME (JP)
FUJIYOSHI TOSHIKAZU (JP)
MORIMOTO KENJI (JP)
YAMAMOTO HAJIME (JP)
YAMAMURA SATOSHI (JP)
International Classes:
H02M3/337; H02M3/28
Foreign References:
| JPS6154875A | 1986-03-19 | |||
| JP2004266976A | 2004-09-24 | |||
| JP2000152624A | 2000-05-30 | |||
| JP2007151225A | 2007-06-14 | |||
| JP2005279774A | 2005-10-13 | |||
| JP2001112253A | 2001-04-20 |
Other References:
See also references of EP 2515427A4
Attorney, Agent or Firm:
Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
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