Title :
High-Voltage Tapped-Inductor Buck Converter Utilizing an Autonomous High-Side Switch
Author :
Modeer, Tomas ; Norrga, Staffan ; Nee, Hans-Peter
Author_Institution :
Dept. of Electr. Energy Conversion, KTH R. Inst. of Technol., Stockholm, Sweden
Abstract :
A high-voltage tapped-inductor buck converter utilizing a novel autonomous high-voltage valve is presented in this paper. Its application as auxiliary power supply for high-power cascaded-converter submodules is discussed, followed by a presentation of the most challenging problems in designing a low-power high-voltage step-down converter. The TI-buck converter topology is analyzed, which together with the novel autonomous high-voltage valve overcomes most of the problems. Analytical expressions describing the operation as well as circuit simulations are presented. Finally, an experimental evaluation of a 3-kV 70-W prototype converter utilizing the proposed autonomous high-voltage valve with series-connected super-junction MOSFETs is presented.
Keywords :
power MOSFET; power convertors; power inductors; TI-buck converter topology; autonomous high-side switch; autonomous high-voltage valve; auxiliary power supply; circuit simulation; high-power cascaded-converter submodules; high-voltage tapped-inductor buck converter; low-power high-voltage step-down converter; power 70 W; series-connected superjunction MOSFET; voltage 3 kV; DC-DC power converters; Inductors; Logic gates; Switches; Topology; Valves; Zero voltage switching; Autonomous switch; Tapped-inductor buck converter; autonomous switch; cascaded converter; high-voltage dc-dc converter; high-voltage dc???dc converter; modular multilevel converter; modular multilevel converter (M2C); quasi-resonant converter; quasiresonant converter; series connection; super-junction MOSFET; synchronous rectification; tapped-inductor buck (TI-buck) converter;
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2014.2365157
