Frequency Optimum of Semiconductor Technologies and State-of-the-Art Magnetic Components on SMPS

Conference: CIPS 2018 - 10th International Conference on Integrated Power Electronics Systems
03/20/2018 - 03/22/2018 at Stuttgart, Deutschland

Proceedings: ETG-Fb. 156: CIPS 2018

Pages: 8Language: englishTyp: PDF

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Authors:
Reimann, Tobias (Technische Universität Ilmenau, Ilmenau, Germany & ISLE Steuerungstechnik und Leistungselektronik GmbH, Ilmenau, Germany)
Scherf, Marko (ISLE Steuerungstechnik und Leistungselektronik GmbH, Ilmenau, Germany)

Abstract:
Switching frequency is key parameter for SMPS system optimization for efficiency and power density. State-of-the-art power semiconductors allow very high switching frequencies up to the MHz range, especially in the 600/650 V class. Today’s limiting factors for overall system frequency are given very often by magnetic materials and components. The paper shows this problematic using the example of transformer and inductor of the well-known two-transistorforward (TTF) converter topology. The difference between an idealised approach and real magnetics designs concerning loss and size reduction with increasing switching frequency is presented.