Practical development of half-bridge high frequency PWM inverter-linked DC-DC converter with diode-clamped active edge resonant cells and extended topologies

Abstract

This paper presents a new circuit prototype of two active edge resonant cells-assisted soft-switching symmetrical PWM half-bridge inverter type DC-DC high power converter employing a high frequency planar transformer with center-tapped secondary windings. Its operating principle is described in detail by using switching mode equivalent circuits which is determined under particular switching pulse pattern scheme, together with its unique features. The performance evaluations of its experimental setup are actually illustrated on the basis of the power loss analysis. The practical effectiveness of new isolated DC-DC converter treated here is proved for low voltage and large current DC output implementation. The extended circuit topologies of DC-DC converter treated here are also demonstrated for application specific equipments and discussed in this paper.