Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23684
Title: Intermittent chaotic operation in switching power converters
Authors: Wong, SC 
Tse, CK 
Tam, KC
Keywords: Current-mode control
Intermittent chaos
Switching power converters
Issue Date: 2004
Publisher: World Scientific
Source: International journal of bifurcation and chaos in applied sciences and engineering, 2004, v. 14, no. 8, p. 2971-2978 How to cite?
Journal: International journal of bifurcation and chaos in applied sciences and engineering 
Abstract: In the process of designing and constructing switching power converters, chaotic operations are often observed intermittently between long periods of regular operations. In practice, such intermittent chaotic operations can be eliminated by incorporating appropriate design measures to combat interference of spurious signals. In this paper, we explain the mechanism that causes "intermittent" chaos in a popular type of switching converters, namely, current-mode controlled switching converters. The circuit model used to study the phenomenon incorporates a coupling process through which a spurious signal is coupled to the current sensing and ramp compensation circuitry, resulting in a modulation of the compensation slope which causes the system to become unstable intermittently. We show that coupling of spurious signals into the compensation ramp can cause intermittent chaotic or subharmonic operations.
URI: http://hdl.handle.net/10397/23684
ISSN: 0218-1274
EISSN: 1793-6551
DOI: 10.1142/S0218127404011077
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