High Efficiency Isolated Half-Bridge Gate Driver with PCB Integrated Transformer

Conference: CIPS 2008 - 5th International Conference on Integrated Power Electronics Systems
03/11/2008 - 03/13/2008 at Nuremberg, Germany

Proceedings: CIPS 2008

Pages: 6Language: englishTyp: PDF

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Zeltner, Stefan (Fraunhofer Institute of Integrated Systems and Device Technology, Germany)

This paper describes in detail a novel concept for isolated gate drivers by combining the advantages of printed circuit board (PCB) integrated transformers with the high efficiency of a resonance driven voltage clamped gate drive circuit. The pros and cons of PCB integrated transformers in gate drive applications are discussed. The used resonance driven voltage clamped gate drive circuit is analyzed, the efficiency of the driver circuit is calculated and compared with the measured one. Overall measurements on the developed half-bridge driver prototype are presented and principle limitations are discussed.