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Title: Comparative studies of common control schemes for reference tracking and application of end-point prediction
Authors: Wu, Ying
Mok, Philip
Keywords: Power convertors
Reference circuits
Voltage control
End point prediction
Reference tracking
Issue Date: 2007
Citation: Proceedings IEEE Custom Integrated Circuits Conference, 2007. CICC '07. San Jose, CA, USA, 16-19 September 2007, p. 559-562
Abstract: This paper analyzes the reference tracking behavior of Buck converters using several control schemes including voltage-mode, current-mode and V2-control from both large-signal and small-signal domains. Loop gains applicable to reference tracking are highlighted, and reference-to-output transfer functions are derived for the cases when end-point prediction (EPP) is applied to enhance the response. A novel V2-controlled Buck converter with EPP is fabricated. The measured reference tracking response shows 10 times improvement in speed.
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