The paper considers an open loop-operation of a PWM DC-DC Buck converter at a constant duty-cycle. Under these conditions, the converters compensate the effects of the parasitic resistances adjusting the diode duty-cycle D1. All four network functions describing the frequency-domain behavior of a discontinuous conduction mode (DCM) operated DC-DC buck converter power stage are derived considering D1 adjustments. These network functions are derived in a closed form both manually and by using a symbolic circuit simulator. Bode plots of the network functions are also given for the buck converter. These functions are derived by utilizing a small signal equivalent circuit of the switching-cell composed of controlled current sources and resistances. Experimental results confirm the accuracy of theoretical derivations.
Derivation of network functions for PWM DC-DC Buck converter in DCM including effects of parasitic components on diode duty-cycle / Luchetta, Antonio; Manetti, Stefano; Piccirilli, Maria Cristina; Reatti, Alberto; Kazimierczuk, Marian K.. - ELETTRONICO. - (2015), pp. 778-783. (Intervento presentato al convegno 15th IEEE International Conference on Environment and Electrical Engineering, EEEIC 2015 tenutosi a ita nel 2015) [10.1109/EEEIC.2015.7165263].
Derivation of network functions for PWM DC-DC Buck converter in DCM including effects of parasitic components on diode duty-cycle
LUCHETTA, ANTONIO;MANETTI, STEFANO;PICCIRILLI, MARIA CRISTINA;REATTI, ALBERTO;
2015
Abstract
The paper considers an open loop-operation of a PWM DC-DC Buck converter at a constant duty-cycle. Under these conditions, the converters compensate the effects of the parasitic resistances adjusting the diode duty-cycle D1. All four network functions describing the frequency-domain behavior of a discontinuous conduction mode (DCM) operated DC-DC buck converter power stage are derived considering D1 adjustments. These network functions are derived in a closed form both manually and by using a symbolic circuit simulator. Bode plots of the network functions are also given for the buck converter. These functions are derived by utilizing a small signal equivalent circuit of the switching-cell composed of controlled current sources and resistances. Experimental results confirm the accuracy of theoretical derivations.I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.