A unified SPICE compatible model of PWM and quasi-resonant converters

Author

Ben-Yaakov, Sam

Author_Institution

Dept. of Electr. & Comput. Eng., Ben Gurion Univ. of the Negev, Beer Sheva, Israel

fYear

1991

fDate

11-14 Jun 1991

Firstpage

1069

Abstract

The switched inductor model (SIM) is developed by considering the average voltages and currents in pulse-width-modulated (PWM) converters. The objective is to present the unified features of the SIM model and to identify its limitations. Close examination of the power stage of common switch mode topologies reveals that they all include an inductor which is switched at one end between two points. This switching action is usually carried out by a transistor and a steering diode. The net behavior is that of a switch which toggles the inductor between the two end points. The idea behind the SIM is to replace this switching part by an equivalent circuit which emulates the average behavior of the three terminals. Good agreement was found between computer simulations based on the proposed SIM and experimental results for PWM and quasi-resonant converters

Keywords

digital simulation; equivalent circuits; power convertors; pulse width modulation; switching circuits; PWM; SIM model; average behavior; average currents; average voltages; common switch mode topologies; computer simulations; equivalent circuit; quasi-resonant converters; steering diode; switched inductor model; switching action; unified SPICE compatible model; Diodes; Inductors; Pulse width modulation; Pulse width modulation converters; SPICE; Switches; Switching circuits; Switching converters; Topology; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1991., IEEE International Sympoisum on

Print_ISBN

0-7803-0050-5

Type

conf

DOI

10.1109/ISCAS.1991.176550

Filename

176550