Modeling of switched DC-DC converters by mixed s-z description

— The paper explains the basic ideas of how to model the dynamical properties of switched DC-DC converters by means of the so-called generalized transfer functions (GTFs). Switched DC-DC converters like bust or bust-buck types exhibit some properties of continuous- and discrete-time characters. These systems can be globally modeled by mixed sz description, utilizing both the Laplace and z-transform operators. Then the resulting line-to-output and control-tooutput transfer functions and the corresponding frequency responses can model some system behavior more faithfully than the classical s-domain zeros/poles location, including special effects above Nyquist’s frequency.

• Type: Conference
• Year: 2006
• Where: ISCAS
• Authors: Dalibor Biolek, Viera Biolkova, Josef Dobes
• Keywords: DC-DC Converters, ISCAS 2006, So-called Generalized Transfer, Transfer Functions