High efficiency DC-DC converter for reduced switching loss

Details High efficiency DC-DC converter for reduced switching loss High efficiency DC-DC converter for reduced switching loss

2009-02-26

2011-11-15

Sterrett, Jeffrey (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

Reexamination Certificate

active

08059430

ABSTRACT:
A DC-DC converter includes: a first series circuit in which a resonance reactor, a primary winding of a transformer, and a switching element are connected in series, the first series circuit being connected to both ends of a direct current power supply; a second series circuit in which a first rectifier, a current resonance capacitor, and a secondary winding of the transformer are connected in series, the second series circuit being connected to both ends of the direct current power supply; a rectifying/smoothing circuit having a second rectifier and a smoothing capacitor and connected to both ends of a series circuit of the current resonance capacitor and the secondary winding of the transformer; an output voltage detection circuit that detects an output voltage of the rectifying/smoothing circuit; and a control circuit that turns on and off the switching element based on an output voltage signal from the output voltage detection circuit.

REFERENCES:
patent: 6788556 (2004-09-01), Hosotani et al.
patent: 7339799 (2008-03-01), Osaka et al.
patent: 2003/0111982 (2003-06-01), Watanabe
patent: 2007/0007933 (2007-01-01), Chan et al.
patent: 2007/0159865 (2007-07-01), Iwamoto et al.
patent: 2007/0171680 (2007-07-01), Perreault et al.
patent: 2007/0274105 (2007-11-01), Osaka
patent: 2008/0036435 (2008-02-01), Watanabe et al.
patent: 2008/0316775 (2008-12-01), Tsai et al.
patent: 2000-78836 (2000-03-01), None

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