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This report studies the influence of printed circuit board (PCB) design on voltage overshoot and ringing oscillation in switching operation of gallium nitride gate injection transistor (GaN-GIT) for high-frequency DC-DC converter. The parasitic inductances in the main power loop have been identified based on moment of method (MoM) analysis and frequency characteristics of impedance measured with 2-port...
This paper describes the soft switching dc-dc converter with the coupling inductor for continuous current mode operation. The coupling inductor makes the commutation of the auxiliary inductor current at switching off to realize the zero current switching at switching on. The coupling inductor also makes it possible to suppress the overvoltage of the lossless snubber capacitor. The analysis of the...
Concerning switching-mode power supply, voltage or current transformation for power conversion is conducted by high speed semiconductor device, while high voltage or current spike produced in the process of switching causes serious electromagnetic interference noises. Ordinary DC/DC converters work under fixed switching frequency mode, so the spectrum is discrete and the energy concentrate at the...
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