Use of state trajectory prediction in hysteresis control for achieving fast transient response of the buck converter

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)22_Publication in policy or professional journal

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Original languageEnglish
Journal / PublicationProceedings - IEEE International Symposium on Circuits and Systems
Publication statusPublished - 2003


TitleProceedings of the 2003 IEEE International Symposium on Circuits and Systems
LocationImperial Queen's Park Hotel
Period25 - 28 May 2003


A dynamic hysteresis control of the buck converter for achieving high slew-rate response to disturbances is proposed. The hysteresis band is derived from the output capacitor current that predicts the output voltage magnitude after a hypothesized switching action. Four switching criteria are formulated to dictate the state of the main switch. The output voltage can revert to the steady state in two switching actions after a large-signal disturbance. The technique is verified with the experimental results of a 50W buck converter.

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