A family of high power density bus converters
- 15 November 2004
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 1, 527-532 Vol.1
- https://doi.org/10.1109/pesc.2004.1355802
Abstract
This paper begins by reviewing current bus converters and exploring their limitations. Then a family of inductor-less bus converters is proposed to overcome the limitations. In the new bus converter, magnetizing current is used to achieve zero-voltage-switching (ZVS) turn-on for all switches. The resonant concept is used to achieve zero-current-switching (ZCS) without turn-off loss and body diode loss. Meanwhile, the self-driven method can be easily applied to save drive loss in the synchronous rectifiers. Based on these concepts, a full-bridge bus converter is built in the quarter-brick size to verify the analysis. The experimental results indicate that it can achieve 95% efficiency at 500 W, 12 V/45 A output. Compared with industry products, this topology can dramatically increase the power density.Keywords
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