切換電容式電荷泵裝置
  ‧ 專利名稱 切換電容式電荷泵裝置
  ‧ 專利證書號 I367626
US 7,772,897 B2
  ‧ 專利權人 國立臺灣大學
  ‧ 專利國家
    (申請日)
中華民國 (2008/09/23)
美國 (2009/02/23)
 
  ‧ 發明人/PI 蔡作敏,何白雄 ,王暉 ,
  ‧ 單位 電信工程學研究所
  ‧ 簡歷/Experience
技術摘要 / Our Technology:
一種切換電容式電荷泵裝置,其可應用於整合至一相位鎖定迴路或延遲鎖定迴路之電路系統,用以提供一切換電容式之電荷泵功能來產生一具有更廣之電壓範圍的直流輸出電壓。此切換電容式電荷泵裝置的特點在於採用2組切換電容式之電路架構來搭配至輸出電容器,並採用一輸出電壓比較器(例如為舒密特觸發器)來將輸出電壓與半值之驅動電壓作比較;並利用其比較結果來於該切換電容式之電路架構中的電容器進行放電操作時,將其中之電容器所連接之驅動電壓切換於全值與半值之間。此作法即可使得本發明之切換電容式電荷泵裝置可提供一更廣之直流輸出電壓範圍。

A switched-capacitor charge pump device is proposed, which is designed for integration to a circuit system, such as a PLL (phase-locked loop) circuit system, for generation of an output direct-current (DC) voltage with a wide amplitude range; and which is characterized by the utilization of two switched-capacitor circuit units in addition to the output capacitor circuit and the utilization of an output voltage comparing circuit (such as a Schmitt trigger) for comparing the end-result output DC voltage against a half-amplitude drive voltage such that when the switched-capacitor circuit units are subjected to a charging-discharging action for voltage pump-up or pump down operations, the switched-capacitor circuit units are switched between a full-amplitude drive voltage and a half-amplitude drive voltage. This feature allows the invention to provide an output DC voltage with a wider amplitude range than prior art.





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