クロック周波数可変DC-DCコンバータ

概要

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In this paper, the author proposes a novel boost type DC-DC converter with variable frequency clock. A conventional booster such as a charge pump type booster or a switched capacitor booster operates with a fixed frequency clock and it's output voltage is not constant by load variation. In order to improve this problem, new converter circuit consisting of VCO, output voltage detector and DC-DC converter block is introduced. This converter can generate a variable frequency clock suitable to load variation and minirnizes variations of output voltages and reduces power dissipation. The new booster circuits are simulated by Spice and are confirmed that proposed system has better characteristics than conventional DC-DC converter. The circuits are useful for embedded power supply circuits in IC or LSI.
津山工業高等専門学校の論文
2002-01-28