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

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.