Title :
DC and AC small signal analysis of zero-current quasi-resonant buck converter
Author_Institution :
Dept. of Electr. Eng., Southwest Jiaotong Univ., Sichuan, China
Abstract :
The time averaging equivalent circuit approach for a class of periodically switching linear networks previously presented by the author (1989) is applied to the modeling and analysis of a zero-current quasi-resonant (ZC-QR) buck converter. The key point of the approach is to replace the switches inside the periodically switching linear networks with controlled voltage sources and controlled current sources, upon which any standard method can be used to perform DC steady-state and AC small-signal analysis. Using the approach, the time averaging equivalent circuit model of the ZC-QR buck converter is obtained, and DC steady-state and AC small-signal analysis are performed on it
Keywords :
equivalent circuits; linear network analysis; power convertors; switched networks; AC small signal analysis; DC steady state analysis; ZC-QR buck converter; controlled current sources; controlled voltage sources; periodically switching linear networks; time averaging equivalent circuit approach; zero-current quasi-resonant buck converter; Buck converters; DC-DC power converters; Equivalent circuits; Pulse width modulation; Pulse width modulation converters; Signal analysis; Steady-state; Switches; Switching circuits; Switching converters;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112171
