Title :
Soft switching of IGBTs in lagging lag of ZVT phase shift DC/DC converter
Author :
Zeljkovic, Sandra ; Reiter, Tomas ; Gerling, Dieter
Author_Institution :
Infineon Technol. AG, Neubiberg, Germany
Abstract :
The additional effort to achieve zero voltage transition (ZVT) in the lagging leg of frequently used ZVT phase shift full bridge converter can be avoided by designing the converter with `high speed´ trench fieldstop IGBTs. Thanks to their reduced turn-off but at the same time low turn-on losses, the lost of ZVT in the lagging leg is not anymore critical to converter´s efficiency. Moreover, it can be beneficial due to their improved `conduction to switching loss´ ratio. Based on that conclusion, a simple method to maximize their efficiency by minimizing the resonant inductance is proposed.
Keywords :
DC-DC power convertors; inductance; insulated gate bipolar transistors; zero voltage switching; DC-DC converter; ZVT phase shift full bridge converter; conduction to switching loss ratio; high speed trench fieldstop IGBT; lagging leg; resonant inductance; soft switching; turn-on losses; zero voltage transition; Capacitance; Current measurement; Insulated gate bipolar transistors; Logic gates; Loss measurement; Switches; Windings; HV to LV DC/DC converter; high speed IGBTs; hybrid electric vehicle; lagging leg; phase shift full bridge ZVT DC/DC converter;
Conference_Titel :
Power Electronics and Applications (EPE'14-ECCE Europe), 2014 16th European Conference on
Conference_Location :
Lappeenranta
DOI :
10.1109/EPE.2014.6910698
