Real-time adjustable gate current control IC solves dv/dt problems in electric drives
Conference: PCIM Europe 2014 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/20/2014 - 05/22/2014 at Nürnberg, Deutschland
Proceedings: PCIM Europe 2014
Pages: 7Language: englishTyp: PDF
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Authors:
Frank, Wolfgang; Arens, Andre (Infineon Technologies AG, Germany)
Hoerold, Stephan (Infineon Technologies AG, Austria)
Abstract:
The tuning of commutation speed of currents between freewheeling diodes and IGBT plays an important role in respect of the EMI behavior of power electronics ([1] [6]). High dv/dt means a large stress for the motor winding insulation and motor bearings ([7], [8]) as well as it causes conducted and radiated interferences with the supply in general. Many works for speed control of IGBT turn-on are known ([2], [3], [4]) and solutions result in large and complex control units. This paper presents the benefits of a novel gate drive IC ([5]), which offers an online adjustment feature for collector emitter voltage transient dvCE/dt in respect of the switching waveforms. The paper also shows, that the IC allows targeting new design tradeoffs in the application.