Charge pump circuit
    3.
    发明授权
    Charge pump circuit 有权
    电荷泵电路

    公开(公告)号:US06734717B2

    公开(公告)日:2004-05-11

    申请号:US10286962

    申请日:2002-11-04

    申请人: Kyeong Sik Min

    发明人: Kyeong Sik Min

    IPC分类号: G05F316

    摘要: A charge pump circuit includes a first switch for connecting an input terminal to a first pumping node, a first pumping capacitor for boosting up a voltage level of the first pumping node in response to a first control signal, a second switch for connecting the first pumping node to an output terminal, a third switch for connecting the input terminal to a second pumping node, a second pumping capacitor for boosting up a voltage level of the second pumping node in response to a second control signal, and a fourth switch for connecting the second pumping node to the output terminal. The charge pump circuit decreases a loss of an output voltage and prevents malfunctions in MOS devices by preventing damages of gate oxides of the MOS devices due to excessively high voltage differences.

    摘要翻译: 电荷泵电路包括用于将输入端子连接到第一泵浦节点的第一开关,用于响应于第一控制信号升高第一泵浦节点的电压电平的第一泵浦电容器,用于连接第一泵浦 节点连接到输出端子,第三开关,用于将输入端子连接到第二泵浦节点;第二泵浦电容器,用于响应于第二控制信号升高第二泵浦节点的电压电平;以及第四开关, 第二泵送节点到输出端。 电荷泵电路减小了输出电压的损失,并且通过防止由于过高的电压差而损坏MOS器件的栅极氧化物,从而防止MOS器件的故障。