Power supply apparatus with current-sharing function

Details Power supply apparatus with current-sharing function Power supply apparatus with current-sharing function

2009-07-27

2011-11-22

Laxton, Gary L (Department: 2838)

Electric power conversion systems

Current conversion

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

C363S021040

Reexamination Certificate

active

08064228

ABSTRACT:
A power supply apparatus with a current-sharing function includes a conversion circuit, a square-wave generating circuit, a resonant circuit, and a rectifier-filter circuit. The conversion circuit has two transformers, and each of the transformers has a primary winding and two secondary windings. More particularly, two secondary windings of the different transformers are electrically connected in series and then the two in-series secondary windings are electrically connected in parallel. The square-wave generating circuit is used to switch a DC voltage into a pulsating voltage. The resonant circuit is electrically connected to the square-wave generating circuit, and having a first capacitor and the primary windings of the transformers. The rectifier-filter circuit has at least two switch components and a second capacitor, and electrically connected to the secondary windings of the transformers to rectify an AC output voltage into a DC output voltage, and the DC output voltage is outputted to at least one output terminal.

REFERENCES:
patent: 5177675 (1993-01-01), Archer
patent: 5712772 (1998-01-01), Telefus et al.
patent: 7352596 (2008-04-01), Cheng
patent: 7660136 (2010-02-01), Yang
patent: 7889520 (2011-02-01), Moiseev

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