A fast hysteretic buck converter with adaptive ripple controller

The paper presents the design of a fast voltage-mode hysteretic buck converter with adaptive ripple controller. The conventional hysteretic converters have the merit of fast response and yet stable operation. However, the output voltage ripple is always higher than the fixed window of the hysteretic...

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Bibliographic Details
Published in2012 IEEE 55th International Midwest Symposium on Circuits and Systems (MWSCAS) pp. 1156 - 1159
Main Authors Chin-Long Wey, Ze-Yan Li, Kun-Chun Chang, Gang-Neng Sung, Wey, Dennis K.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.08.2012
Subjects
Capacitors
Delay
Hysteresis
Regulators
Simulation
Switching frequency
Voltage control
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Summary:The paper presents the design of a fast voltage-mode hysteretic buck converter with adaptive ripple controller. The conventional hysteretic converters have the merit of fast response and yet stable operation. However, the output voltage ripple is always higher than the fixed window of the hysteretic comparator. The adaptive ripple controller is a circuit which automatically generates a virtual hysteresis window for the hysteretic comparator such that the output voltage ripples are stable within the fixed hysteresis window according to the load conditions. The hysteretic comparator with the adaptive ripple controller has been designed and implemented with the TSMC .35 CMOS process.
ISBN:1467325260
9781467325264
ISSN:1548-3746
1558-3899
DOI:10.1109/MWSCAS.2012.6292230