Switching power supply and method of controlling voltage induced

Details Switching power supply and method of controlling voltage induced Switching power supply and method of controlling voltage induced

1998-09-29

2000-10-24

Berhane, Adolf Deneke

Electric power conversion systems

Current conversion

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

363 89, 363127, H02M 3336, H02M 7217

Patent

active

061376981

ABSTRACT:
A switching power supply has a secondary rectifying circuit including two MOS transistors which can operate in a third quadrant for use as low-loss rectifying devices. While the MOS transistors are operating in the third quadrant, the application of a gate voltage to the MOS transistors is forcibly stopped to turn off the MOS transistors. Periods in which the MOS transistors operate in the third quadrant are prevented from overlapping each other. The periods in which the MOS transistors operate in the third quadrant may be established by an ON timer, and the periods in which the MOS transistors remain de-energized may be established by an OFF timer.

REFERENCES:
patent: 4953068 (1990-08-01), Henze
patent: 5774350 (1998-06-01), Notaro et al.
patent: 5815384 (1998-09-01), Hammond et al.
patent: 5907481 (1999-05-01), Svardsjo

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