Multiple output converter with improved cross regulation

Details Multiple output converter with improved cross regulation Multiple output converter with improved cross regulation

2006-01-17

2006-01-17

Sterrett, Jeffrey (Department: 2838)

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

C363S017000, C363S021060, C363S021140, C363S127000

Reexamination Certificate

active

06987679

ABSTRACT:
A cost effective circuit improves the cross regulation of multiple outputs converter, especially for that output chokes are coupled and a synchronous rectifier is applied to one of the outputs. A DC/DC converter includes a transformer having a primary winding and two secondary windings. The first secondary winding is coupled to a synchronous rectifier and a first output choke. The second secondary winding is coupled to a diode rectifier and a second output choke. The first output choke and the second output choke are coupled. A low power MOSFET switch is added to the diode rectifier for avoiding the diode rectifier operating in DCM when light loaded.

REFERENCES:
patent: 6434026 (2002-08-01), Malik et al.
patent: 6452367 (2002-09-01), Watanabe
patent: 6549432 (2003-04-01), Giannopoulos et al.
patent: 6567261 (2003-05-01), Kanouda et al.
patent: 6744642 (2004-06-01), Hung
patent: 6771059 (2004-08-01), Zwicker

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