The paper discussed a half-bridge converter of single-stage PFC with ZVZCS.

This paper proposes an input-paralleled output-series half-bridge converter based on single half-bridge converter, it is suitable for the high output voltage and large power application.

For isolated-type symmetry half-bridge bidirectional converter with phase-shifted control, a simplified circuit under 4 modes using the primary windings of transformer as reference object is built.