Title :
Analysis of self-excited resonant DC-DC converter to determine oscillation condition
Author :
Kanai, Yasuyulu ; Yamashita, Nobuhiko ; Murakami, Naoki ; Yachi, Toshiaki
Author_Institution :
NTT Integrated Inf. & Energy Syst. Labs., Tokyo, Japan
Abstract :
A method is proposed for analyzing a self-exciting resonant DC-DC converter that gives the theoretical oscillation condition under which the converter can work. This condition was determined by theoretically analyzing the energy transmission between the main-resonant circuit and the resonant gate-driving circuit. Maintaining oscillation requires that the energy supplied by the main-resonant circuit is larger than the conduction power loss caused by the parasitic gate resistance. The analysis also showed that the oscillation area depends on the feedback and gate capacitances. The analytical results agreed with the experimental ones
Keywords :
DC-DC power convertors; capacitance; circuit oscillations; driver circuits; electric resistance; feedback; losses; resonant power convertors; conduction power loss; energy supply; energy transmission; feedback; gate capacitance; main-resonant circuit; oscillation; oscillation condition determination; parasitic gate resistance; resonant gate-driving circuit; self-excited resonant DC-DC converter; theoretical oscillation condition; Capacitance; DC-DC power converters; Equivalent circuits; Inductors; Inverters; MOSFET circuits; Power MOSFET; RLC circuits; Resonance; Zero voltage switching;
Conference_Titel :
Power Conversion Conference - Nagaoka 1997., Proceedings of the
Conference_Location :
Nagaoka
Print_ISBN :
0-7803-3823-5
DOI :
10.1109/PCCON.1997.638328
