Title :
Bi-frequency control for quasi-resonant converters
Author :
Zhang, Yuefeng ; Sun, Xubin ; Lee, C.Q.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Illinois Univ., Chicago, IL, USA
Abstract :
A new control technique for quasi resonant converters, called the bi-frequency control, is proposed. This control technique can regulate the output of quasi-resonant converters at two fixed switching frequencies without adding an auxiliary switch. The basic principle of the bi-frequency control is presented. Based on a zero-voltage-switching buck converter, the theoretical analysis and design procedures are given. PSPICE simulations are used to demonstrate the operation, and a 50 watts prototype is implemented to verify the analytic work
Keywords :
SPICE; circuit analysis computing; circuit resonance; digital simulation; frequency control; power convertors; switching circuits; 50 W; PSPICE simulations; bi-frequency control; fixed switching frequencies; quasi-resonant converters; zero-voltage-switching buck converter; Analytical models; Buck converters; Frequency conversion; Frequency modulation; Resonance; SPICE; Switches; Switching converters; Switching frequency; Virtual prototyping; Zero current switching; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, PESC '94 Record., 25th Annual IEEE
Conference_Location :
Taipei
Print_ISBN :
0-7803-1859-5
DOI :
10.1109/PESC.1994.349716
