Title :
Characterization of asymmetrical half bridge flyback converter
Author :
Chen, Tso-Min ; Chen, Chern-Lin
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
Flyback derived converters are attractive because of their simple capacitive output filter when compared with other converters used in multiple-output or cost-sensitive applications. This paper analyzes the detailed circuit behavior of the asymmetrical half bridge flyback converter. Several practical issues, including the specific relationships between the duty cycle and the different types of energy in the energy-storage elements, and the zero voltage switching (ZVS) conditions of the power switches have been thoroughly examined. Mathematical equations have also been given. A 5 V/20 A prototype has been built to verify the analytical results.
Keywords :
bridge circuits; power convertors; switching circuits; 20 A; 400 V; 5 V; ZVS; asymmetrical half bridge flyback converter characterisation; capacitive output filter; circuit behavior; duty cycle; energy-storage elements; flyback derived converters; power switches; zero voltage switching; Bridge circuits; Equations; Inductors; Prototypes; Resonance; Stress; Switches; Switching converters; Switching loss; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 2002. pesc 02. 2002 IEEE 33rd Annual
Print_ISBN :
0-7803-7262-X
DOI :
10.1109/PSEC.2002.1022572
