Implementation of a ZVS Isolated Boost Converter

作者：Chen J J; Lin B R

来源：International Review of Electrical Engineering, 2009, 4(2): 184-190.

• Zero-voltage switching (ZVS)
• Active clamp circuit

A Zero-voltage switching (ZVS) isolated converter is presented in this paper. The active clamp circuit is connected in parallel with the primary side of transformer which is not only to absorb the energy of leakage inductor, but also achieve ZVS for all power switches. Moreover, the transformer can be reset and the voltage stresses of secondary diodes are clamped to output voltage automatically. Hence, the proposed converter has reduced switching losses, the voltage stresses on the secondary diodes and transformer size. The operational principles, steady state analyses and design consideration are discussed Finally, experimental results from a 50W prototype are presented to confirm the effectiveness of the proposed converter.

• 出版日期2009-4