University of Illinois Urbana-Champaign

Modeling and simulating switching power converters

Silva, Sergio

This item is only available for download by members of the University of Illinois community. Students, faculty, and staff at the U of I may log in with your NetID and password to view the item. If you are trying to access an Illinois-restricted dissertation or thesis, you can request a copy through your library's Inter-Library Loan office or purchase a copy directly from ProQuest.

Permalink

https://hdl.handle.net/2142/100032

Description

Title
Modeling and simulating switching power converters
Author(s)
Silva, Sergio
Contributor(s)
Hanumolu, Pavan K.
Issue Date
2018-05
Keyword(s)
  • Buck
  • boost
  • dc-dc converter
  • loop compensation
  • average model
  • PSS
Abstract
Different modeling and simulation techniques are presented for switching power converters. It is important to achieve an excellent loop compensation to reach high performance and efficiency, but the difficulty comes from modeling due to the nonlinear switching behavior. Techniques involve linearizing switching power converters to derive their small-signal transfer functions and to construct their average model. The small-signal transfer functions can be quickly modeled in MATLAB but deriving or obtaining the transfer functions can be a tedious process, and designers often wish to verify their design in a circuit simulator such as Spectre. The average model is an equivalent circuit of its power converter that can be simulated and has low simulation time since it does not involve any switching and represents the average DC value of the voltage and current waveforms. To properly represent the nonlinear switching behavior, PSS (periodic steady-state), PAC (periodic small-signal), and PSTB (periodic stability) are simulation analyses found in SpectreRF, and they can extract the open and closed-loop frequency responses from the switching transient simulation. The periodic analyses provide a more accurate frequency response across wider frequencies at the cost of increased simulation time compared to the linearized techniques.
Type of Resource
text
Language
en
Permalink
http://hdl.handle.net/2142/100032

Owning Collections

Senior Theses - Electrical and Computer Engineering PRIMARY
The best of ECE undergraduate research