https://scholars.lib.ntu.edu.tw/handle/123456789/388702
標題: | Analyses of the Impact of Current Load Change on a Current-Mode Constant On-Time Buck Converter Regulator | 作者: | Ming-Chuan Yen Dan Chen Sheng-Fu Hsiao Yung-Jen Chen DAN CHEN |
關鍵字: | Adaptive voltage position (AVP); Constant on-time control; Current mode control; Output voltage ripple; Voltage regulator (VR) | 公開日期: | 九月-2014 | 起(迄)頁: | 2005-2012 | 來源出版物: | IEEE Energy Conversion Congress and Exposition (ECCE) | 摘要: | For recent energy-saving computer power converter products, it's required to provide a very tightly regulated voltage under very stringent current load change conditions. In this paper, this issue is dealt with for a current-mode constant on-time buck converter. An issue about beat frequency effects analysis is first given using modulation spectrum theory and small-signal frequency-domain model. This analysis provides insight into the complexity of the issue. Then a time-domain approach is used to derive converter output voltage ripple in terms of converter load current excitation. The results are verified in experiments. A mathematical solution is established for estimating the worst-case output ripple voltage due to repetitive large-step AC load current excitation of wide-range frequencies. © 2014 IEEE. |
URI: | http://scholars.lib.ntu.edu.tw/handle/123456789/388702 | DOI: | 10.1109/ECCE.2014.6953666 | SDG/關鍵字: | Energy conservation; Frequency domain analysis; Time domain analysis; Voltage regulators; Adaptive voltage; Current Mode Control; Mathematical solutions; Modulation spectrum; On-time controls; Output voltage ripple; Signal frequencies; Time-domain approach; DC-DC converters |
顯示於: | 電機工程學系 |
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