| Abstract |
The paper presents a detailed analysis of the asymmetrical half-bridge PWM converter. Due to its advantageswith regard to efficiency, power density and cost the topology gains increasing attention. Recentpublications propose a rough but simple converter model which helps to understand the basic converterfunctioning. A comparison between measured and simulated waveforms, however, reveals its insufficiency.The simple model fails to predict important converter characteristics. The necessary modelrefinement considers the actual capacitance and inductance values instead of replacing these componentsby ideal voltage or current sources. Further, according to previous research, incorporation of parasiticcomponents is inevitable for the development of an optimal design. Thus, the paper identifies the mostimportant parameters and reveals their primary influence on efficiency. Finally, an optimization strategyis proposed. |
