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    • 1. 发明公开
    • Charge pump circuit
    • Ladungspumpenschaltung
    • EP1041705A2
    • 2000-10-04
    • EP00302606.9
    • 2000-03-29
    • Nguyen, Tam
    • Nguyen, Tam
    • H02M3/07
    • H02M3/073H02M2003/075
    • The charge pump circuit (10) includes a plurality of successively coupled pump stages (14a, 14b, 14c). Each of these successively coupled charge pump stages (14a, 14b, 14c) receives at least one input signal and at least one clock input signal (CLK1, CLK2, CLK3, CLK4), and in accordance therewith, conveys at least one output signal. Significantly, at least one output signal of a prior charge pump stage (14a) is substantially equal to at least one input signal of a next adjacent charge pump stage (14b), so that the prior adjacent charge pump stage (14a) will be effectively shut off, so that reverse current flow can be prevented through the charge pump circuit. Each stage (14, Fig. 4) includes transistors (110a, 110b) which are coupled to receive the input signals and to provide the output signals of the stage, and are coupled to a clock signal (CLK2, CLK4) by a bootstrap capacitor (100b).
    • 电荷泵电路(10)包括多个连续耦合的泵级(14a,14b,14c)。 这些连续耦合的电荷泵级(14a,14b,14c)中的每一个接收至少一个输入信号和至少一个时钟输入信号(CLK1,CLK2,CLK3,CLK4),并且根据其传送至少一个输出信号。 重要的是,现有电荷泵级(14a)的至少一个输出信号基本上等于下一相邻电荷泵级(14b)的至少一个输入信号,使得先前相邻的电荷泵级(14a)将被有效地 关闭,从而可以通过电荷泵电路防止反向电流流动。 每个级(14,图4)包括晶体管(110a,110b),其被耦合以接收输入信号并提供级的输出信号,并且通过自举电容器耦合到时钟信号(CLK2,CLK4) (100B)。