Flexible switching speed control to improve switching losses and EMI by a gate driver with adjustable gate current

Conference: CIPS 2014 - 8th International Conference on Integrated Power Electronics Systems
02/25/2014 - 02/27/2014 at Nuremberg, Germany

Proceedings: ETG-Fb. 141: CIPS 2014

Pages: 6Language: englishTyp: PDF

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Bauch, Julia; Lindemann, Andreas (Otto-von-Guericke-University Magdeburg, Institute of Electric Power Systems, Chair for Power Electronics, Universitaetsplatz 2, 39106 Magdeburg, Germany)

IGBT switching speed defines the performance of the power semiconductor device as well as it influences the efficiency and the electromagnetic emissions of a power converter system. Thus, a driver which allows to flexibly tune the IGBT switching speed through control of transient voltage and current slopes is desirable to adjust the trade-off between power device’s switching losses and EMI behaviour. This paper describes the application of a gate driver with adjustable gate current for flexible switching speed control in a power converter system and the benefit obtained in switching losses and conducted EMI compared to a standard IGBT gate driver.