Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/13917
Title: Nullor-based design of compensators for fast transient recovery of switching regulators
Authors: Tse, CK 
Poon, NK
Issue Date: 1995
Source: IEEE transactions on circuits and systems. I, Fundamental theory and applications, 1995, v. 42, no. 9, p. 535-537
Abstract: Compared to linear regulators, switching regulators are much slower in response to sudden load change. The dynamics are usually improved by introducing proper feedback loops whose design is based on frequency domain techniques and some appropriate models of the power stage. Fast transient recovery is generally difficult to achieve. In this paper, we present a new approach to designing compensators for achieving very fast transient recovery in switching regulators. Essentially, we create a 'phantom' load for the switching regulator which, in the event of any rapid change of the actual load, remains as a slowly varying load. The design of such a phantom load is based on the use of two ideal elements, namely the nullator and the norator. Practical circuits can be easily constructed using active devices such as transistors and op-amps.
Publisher: Institute of Electrical and Electronics Engineers
Journal: IEEE transactions on circuits and systems. I, Fundamental theory and applications 
ISSN: 1057-7122
DOI: 10.1109/81.414827
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