Discrete Modeling and Analysis of Switching Regulators

Citation

Packard, Dennis John (1976) Discrete Modeling and Analysis of Switching Regulators. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/VR66-DX76. https://resolver.caltech.edu/CaltechETD:etd-01082008-110208

Abstract

A simplified method for finding and using discrete small-signal models for switching regulators is presented. With introduction of a new "straight-line" approximation, and application of root locus techniques, it is demonstrated that discrete models may be used accurately to predict wide bandwidth closed-loop behavior with methods simple enough to be useful in the initial design phase of a switching regulator. The principal result is a set of converter transfer functions comparable to the set derived by describing function techniques, but not subject to the low frequency restriction of describing function models. Also presented is a set of pulse-width modulator transfer functions which indicates that the potential small-signal transient behavior of a switching regulator is independent of the choice of modulator.

Thesis Files