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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 電機工程學系 > 會議論文  >  A Current Mode Adaptive On-Time Control Scheme for Fast Transient DC-DC Converters

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/68879

    Title: A Current Mode Adaptive On-Time Control Scheme for Fast Transient DC-DC Converters
    Authors: H.-C. Lin;B.-C. Fung;T.-Y. Chang
    教師: 張慶元
    Date: 2008
    Publisher: Institute of Electrical and Electronics Engineers
    Relation: ISCAS 2008, 2008 IEEE International Symposium on Circuits and Systems, Seattle. WA. USA, 18-21 May 2008, Pages 2602-2605
    Keywords: current mode adaptive on-time control scheme
    fast transient DC-DC converters
    variable switching frequency controllers
    Abstract: For controlling DC-DC converters, variable switching frequency controllers have the advantage of fast transient response since the switching cycles can instantaneously change during the transient condition. However, these control techniques generally suffer significant steady-state switching frequency variation when the input voltage and output voltage are varied. Such drawback complicates the design of input and output filters. Therefore, this paper presents a current mode adaptive on-time control scheme. The proposed controller can dynamically adjust the turn-on time of power switches according to the changes of input voltage and output voltage in steady-state operation and can change switching cycles instantaneously in transient operation. Through the proposed control scheme, the DC-DC converters can accomplish fast transient response with the capability of mitigating the switching frequency variation. Full chip simulation results are provided to verify the proposed method. Comparisons with other control techniques are also presented.
    Relation Link: http://www.ieee.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/68879
    Appears in Collections:[電機工程學系] 會議論文

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