Closed-loop performance comparisons of switching regulators with current-injected control

Author

Schoneman, George K. ; Mitchell, Daniel M.

Author_Institution

Rockwell Int., Cedar Rapids, IA, USA

Volume

3

Issue

1

fYear

1988

fDate

1/1/1988 12:00:00 AM

Firstpage

31

Lastpage

43

Abstract

The authors verify the validity of applying state-space averaging and linearization to the control law of current-injected switching regulators for designs with wideband first-order open-loop responses without right-hand plane (RHP) zeros. Quantitative closed-loop performance comparisons are made of current-injected versus voltage control for the boost and buck switching regulator topologies. In buck-topology regulators, current-injected control implemented using pole cancellation, does not yield categorically better closed-loop performance than what is obtained by using lead compensated voltage control. For the boost regulator, the advantages of current-injected control are greater since lead-compensation cannot usually be used due to the duty-factor-dependent complex pole and RHP zero

Keywords

closed loop systems; electric current control; switching circuits; voltage regulators; boost regulator; buck switching regulator; closed-loop performance; control law; current-injected control; linearization; state-space averaging; switching regulators; voltage control; Control systems; Equations; Inductors; Open loop systems; Pulse width modulation; Regulators; Switching circuits; Vectors; Voltage control; Wideband;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.4329

Filename

4329