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The development of a power section for a 5 kW automotive dc to ac inverter operating at 24 V is presented. General design considerations and optimization approaches to ensure high electrical performance including high efficiency and compact size at the same time are evaluated by means of simulations. Prototypes of the concept inverter were fabricated and tested in the laboratory. Measurement results...
An analysis of a desaturation detection circuit specially designed for low voltage power MOSFETs is presented and design aspects are carried out. The characteristics are a low detection threshold hysteresis, a fast shutdown reaction and a junction temperature compensation. The proposed desaturation detection circuit is described in detail and experimental results are given. The influence of the junction...
In battery fed power trains with power converters like in lift trucks or electrical passenger cars the battery voltage varies substantially between charching and discharching and for full loaded and empty battery status. For gate drive circuit design and MOSFET selection the overvoltage at turn-off affected by the induced voltages at the stray inductances in the commutation path and the maximum dc...
An analysis and improvement of the switching behaviour of low voltage power MOSFETs with high current ratings is presented. Different turn-off active gate control circuits are described and their performance is analyzed with the focus on the reduction of the overvoltage at turn-off under the precondition of limited increasing of switching losses. The control methods are experimentally compared to...
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