| Abstract |
In this paper, output voltage deviations issues in multi-output DCM cross-regulated flybacks are studied, with a particular focus on the transformer. Using the extended Cantilever model, a general explanation of the influence of the transformer on voltage deviations is developed. Then, an application of an analytical model based on a formulation of the magnetic vector potential allowing to characterize the transformer around 1,000 faster than its finite-element method (FEM) equivalent is presented. This characterization method, fast and accurate, offers the possibility to create a design aid tool for the transformer manufacturer, allowing to define the winding layout with the best cross-regulation performances for a transformer taking place in a given converter. |
