POWER SUPPLY UNIT
PROBLEM TO BE SOLVED: To provide a power supply unit using a piezoelectric transformer, capable of achieving a large output current while ensuring control stability.SOLUTION: A power supply unit having a step-up converter with a piezoelectric transformer and a DC-DC converter performing depression a...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a power supply unit using a piezoelectric transformer, capable of achieving a large output current while ensuring control stability.SOLUTION: A power supply unit having a step-up converter with a piezoelectric transformer and a DC-DC converter performing depression and current amplification operations on the basis of output power of the step-up converter, includes a constant-voltage circuit connected in parallel to the DC-DC converter.SELECTED DRAWING: Figure 1
【課題】圧電トランスを用いた電源装置において、制御の安定性を確保しつつ、大きな出力電流を得る。【解決手段】圧電トランスを有する昇圧コンバータと、昇圧コンバータの出力電力に基づいて減圧、電流増幅動作を行なうDC−DCコンバータとを備えた電源装置であって、DC−DCコンバータと並列に定電圧回路が設けられていることを特徴とする。【選択図】図1 |
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