Multiple-stage charge pump circuit with charge recycle circuit,申请号US20070878653-传众专利搜索

Multiple-stage charge pump circuit with charge recycle circuit

申请公布号：US2009027108(A1)

申请号：US20070878653

申请日期：2007.07.26

申请公布日期：2009.01.29

申请人：

MACRONIX INTERNATIONAL CO., LTD.

发明人：CHEN CHUNG-KUANG;HUNG CHUN-HSIUNG;SHIH YI-TE

分类号：G05F3/02

主分类号：G05F3/02

摘要：A multiple-stage charge pump circuit includes first and second pump capacitors, a charge recycle circuit, and first and second transfer circuits. The charge recycle circuit includes first and second driving circuits and a switch circuit turning off to make a node floating and to couple first terminals of the first and second pump capacitors to the node in a first time period. The switch circuit and first and second driving circuits provide a specific voltage to the node and control voltages at the first terminals of the first and second pump capacitors in second and third time periods, respectively. The first and second transfer circuits provide a high voltage to a second terminal of the first pump capacitor in the second time period, and provide the voltage of the second terminal of the first pump capacitor to a second terminal of the second pump capacitor in the third time period.