Title | Computer-Aided Dynamic Characterization of Fourth-Order PWM DC #x2013;DC Converters |
Publication Type | Journal Article |
Year of Publication | 2008 |
Authors | Davoudi, A., J. Jatskevich, and P. L. Chapman |
Journal | Circuits and Systems II: Express Briefs, IEEE Transactions on |
Volume | 55 |
Pagination | 1021 -1025 |
Date Published | oct. |
ISSN | 1549-7747 |
Keywords | capacitors, computer-aided dynamic characterization, conduction losses, DC-DC power convertors, fourth-order capacitor-based switching, fourth-order PWM dc-dc converters, large-signal time-domain transients, PWM power convertors, small-signal frequency-domain characteristics, state-space methods, transient analysis |
Abstract | Average-value modeling of dc-dc converters has been an area of active research for many years. Developing accurate average-value models of higher order converters is further complicated by the presence of parasitics and waveform nonlinearity. This paper extends the numerical state-space averaging to the fourth-order capacitor-based switching stages. The proposed model takes into account conduction losses associated with switching-stage components and is seamlessly functional in all operational modes. The proposed model is validated with a hardware prototype and detailed simulation and is shown to accurately predict large-signal time-domain transients as well as small-signal frequency-domain characteristics. |
URL | http://dx.doi.org/10.1109/TCSII.2008.2001985 |
DOI | 10.1109/TCSII.2008.2001985 |