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

Konferenz: CIPS 2018 - 10th International Conference on Integrated Power Electronics Systems
20.03.2018 - 22.03.2018 in Stuttgart, Deutschland

Tagungsband: ETG-Fb. 156: CIPS 2018

Seiten: 8Sprache: EnglischTyp: 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.