Title :
Efficiency improvement for SR forward converters with LC snubber
Author_Institution :
Dept. of Electr. Eng., I-Shou Univ., Ta-Hsiang, Taiwan
fDate :
11/1/2001 12:00:00 AM
Abstract :
A novel circuit is proposed to alleviate the problems associated with using synchronous rectifiers in forward converters. The proposed circuit employed an LC snubber in the primary side of the converter as opposed to conventional schemes of employing an additional active switch to improve the efficiency. For the proposed forward converter with 40 W output, 91% efficiency at 3.3 V and 4 A output is obtained. In this paper, the circuit operation of this converter is described with the aid of simulation waveforms and the design criteria are also established
Keywords :
DC-DC power convertors; power supplies to apparatus; rectifying circuits; snubbers; 3.3 V; 4 A; 40 W; 91 percent; LC snubber; circuit operation; efficiency improvement; low output voltage power supplies; primary side; simulation waveforms; synchronous rectifier forward converters; Capacitors; Diodes; Electromagnetic interference; Inductance; MOSFET circuits; Rectifiers; Snubbers; Strontium; Surges; Switches;
Journal_Title :
Power Electronics, IEEE Transactions on
