Title :
Computer aided small-signal analysis for PWM DC-DC converters operated in discontinuous conduction mode
Author :
Reatti, Alberto ; Balzani, Marianna
Author_Institution :
Dept. of Electron. & Telecommun., Florence Univ., Italy
Abstract :
A computer analysis of PWM dc-dc converters operated in discontinuous conduction mode DCM is presented. The analysis is based on a linearized small-signal model of the converter ideal switching-cell (ISC), which is used as a sub-circuit inside the circuit simulation program. The sub-circuit is used in computer simulation of a PWM buck-boost converter, which is based on equivalent circuits. A computer program for PWM dc-dc converters analysis generates the symbolic expressions of the root locus and Bode plots of the control-to-output voltage transfer function, the input-to-output voltage transfer function, the input impedance, and the output impedance which are given both in symbolic and numerical expression.
Keywords :
DC-DC power convertors; PWM power convertors; equivalent circuits; transfer functions; Bode plots; PWM DC-DC converters; PWM buck-boost converter; circuit simulation program; computer aided small-signal analysis; discontinuous conduction mode; equivalent circuits; ideal switching-cell; linearized small-signal model; root locus; voltage transfer function; Circuit simulation; Computer simulation; DC-DC power converters; Equivalent circuits; Impedance; Pulse width modulation; Pulse width modulation converters; Switching circuits; Switching converters; Transfer functions;
Conference_Titel :
Circuits and Systems, 2005. 48th Midwest Symposium on
Print_ISBN :
0-7803-9197-7
DOI :
10.1109/MWSCAS.2005.1594413
