DC-DCコンバータのための高速比例ディジタル制御回路について  [in Japanese] Fast Proportion Digital Control Circuit for DC-DC Converter  [in Japanese]

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Author(s)

Abstract

近年,高性能のエネルギーマネージメントが求められており,DC-DCコンバータのディジタル制御に関しての研究が多く行われている。ここでは,降圧形DC-DCコンバータにディジタル制御を施した場合の過度特性について検討する。本論文では2種類のA-Dコンバータを用いている。負荷のステップ変化に対しての出力電圧のシミュレーション結果の比較検討を行う。その結果,提案するディジタル制御方式では,従来の方式に比べ非常に優れた特性でありながら,低コストである回路を実現した。

This paper presents fast sampling and a low cost digital control circuit for dc-dc converter. The dynamic characteristics are improved by the new method. However the cost of control circuit does not increase hardly. The digital control circuit has A-Delay time which is occurred from a conversion time and calculation time. The sampling period is synchronized with the switching frequency in the conventional digital control method. So, the total length of calculation and sampling time is necessary a few switching period. On the other hand, the proposed method has a unique sampling method. The calculation process of P and I-D controls are parallel. Although the sampling interval and points for I-D control are same to the conventional method, the sampling point of P control is shorter than the switching period of DC-DC converter. In this case, the fast low resolution A-D converter is used for P control and the slow time one in used for I-D control. These A-D converters are extremely cheaper than an excellent high-resolution and fast-conversion A-D converter. The experiment results against the step change of the loA-D are discussed. As a result, it is revealed experimentally that the proposed circuit has a fast transient response.

Journal

  • IEICE technical report

    IEICE technical report 110(393), 73-77, 2011-01-20

    The Institute of Electronics, Information and Communication Engineers

References:  4

Codes

  • NII Article ID (NAID)
    110008675361
  • NII NACSIS-CAT ID (NCID)
    AA11135980
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    09135685
  • NDL Article ID
    10971428
  • NDL Source Classification
    ZN33(科学技術--電気工学・電気機械工業--電子工学・電気通信)
  • NDL Call No.
    Z16-940
  • Data Source
    CJP  NDL  NII-ELS 
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