Title:
INSULATION BOOST TYPE PUSH-PULL SOFT-SWITCHING DC/DC CONVERTER
Document Type and Number:
WIPO Patent Application WO/2008/020629
Kind Code:
A1
Abstract:
An insulation boost type push-pull soft-switching DC/DC converter is realized by
a circuit including a voltage source (Vin), an energy storage inductance (Lin), main
switches (S1, S2), externally installed capacitors (C1, C2) connected in parallel
to the main switches, auxiliary switches (S1a, S2a), externally installed capacitors
(C1a, C2a) connected in parallel to the auxiliary switches, a resonance capacitor
(CG), a boost transformer (Tr) having a primary winding equipped with
a center tap and a secondary winding equipped with a center tap, rectifying diodes
(DR1, DR2), an output filter inductance (Lf), an output filter capacitor(Cf),
and a load resistance (RLd). Control is performed to make and cut off
electrical connection when the main switches and the auxiliary switches is in
the zero voltage state so as to reduce the switching loss and the EMI noise and obtain
a high conversion efficiency.
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Inventors:
XIANG AN
SADOHARA TADASHI
ZENKE MICHIHIKO
MIYANO TOSHIO
SADOHARA TADASHI
ZENKE MICHIHIKO
MIYANO TOSHIO
Application Number:
PCT/JP2007/066036
Publication Date:
February 21, 2008
Filing Date:
August 17, 2007
Export Citation:
Assignee:
UNIV SHANGHAI JIAOTONG (CN)
YASKAWA DENKI SEISAKUSHO KK (JP)
XIANG AN
SADOHARA TADASHI
ZENKE MICHIHIKO
MIYANO TOSHIO
YASKAWA DENKI SEISAKUSHO KK (JP)
XIANG AN
SADOHARA TADASHI
ZENKE MICHIHIKO
MIYANO TOSHIO
International Classes:
H02M3/155
Foreign References:
| JP2003134817A | 2003-05-09 | |||
| JP2005110384A | 2005-04-21 | |||
| JP2006115680A | 2006-04-27 |
Attorney, Agent or Firm:
OGURI, Shohei et al. (7-13 Nishi-Shimbashi 1-chom, Minato-ku Tokyo 03, JP)
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