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    Multi-stage charge pump with clock-controlled initial stage and shifted clock-controlled additional stage
    1.
    发明授权
    Multi-stage charge pump with clock-controlled initial stage and shifted clock-controlled additional stage 有权

    公开(公告)号：US11569738B1

    公开(公告)日：2023-01-31

    申请号：US17488380

    申请日：2021-09-29

    申请人： GLOBALFOUNDRIES U.S. Inc.

    发明人： Siva K. Chinthu

    IPC分类号： H02M3/07

    摘要： Disclosed is a multi-stage charge pump. A first stage is controlled by a first clock signal. A second stage is controlled by a second clock signal, which has high and low states that are shifted relative to the high and low states of the first clock signal. The high and low states of the second clock signal can be higher than the high and low states, respectively, of the first clock signal for a positive charge pump and vice versa for a negative charge pump. Any additional stage is similarly controlled by an additional clock signal that is shifted with respect to the clock signal controlling the immediately preceding stage. By shifting the high and low states of clock signals controlling downstream stages, the need for series-connected or high voltage capacitors in the downstream stages is eliminated and circuit complexity and area consumption are reduced.