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    • 67. 发明公开
    • Voltage converting circuit and multiphase clock generating circuit for driving the same
    • 电压转换电路及驱动其的多相时钟产生电路
    • EP0822478A3
    • 1998-12-30
    • EP97118054.2
    • 1993-09-02
    • NEC CORPORATION
    • Tamagawa, Akio
    • G06F1/04H03K3/02
    • H03K3/356026H02M3/07H02M2001/009H03K3/356121
    • A voltage converting circuit of the charge pump step-up type includes a first circuit means for charging each of first and second capacitors with the voltage of a voltage source at a first timing. A second circuit operates to serially connect the charged first capacitor between a positive electrode of the voltage source and a positive voltage output terminal at a second timing so that a positive voltage which is a double of the voltage source voltage, is supplied from positive voltage output terminal. A third circuit operates to the charged first and second capacitors in series between a ground terminal and a negative voltage output terminal at a third timing so that a negative voltage which is a double of the voltage source voltage, is supplied from the negative voltage output terminal. Since the positive voltage and the negative voltage are generated independently of each other, a voltage variation on one of the positive and negative voltage output terminals caused by an external load causes no voltage variation on the other of the positive and negative voltage output terminals.
    • 电荷泵升压型的电压转换电路包括第一电路装置,用于在第一时间向第一和第二电容器中的每一个充电电压源的电压。 第二电路操作以在第二时序将充电的第一电容器串联连接在电压源的正电极和正电压输出端子之间,使得电压源电压的两倍的正电压从正电压输出 终奌站。 第三电路在第三定时处将充电的第一和第二电容器串联在接地端子和负电压输出端子之间,使得作为电压源电压的两倍的负电压从负电压输出端子 。 由于正电压和负电压彼此独立地产生,因此由外部负载引起的正和负电压输出端子中的一个上的电压变化不引起正和负电压输出端子中的另一个上的电压变化。
    • 68. 发明公开
    • Voltage converting circuit and multiphase clock generating circuit for driving the same
    • Tak。。。。。。。。
    • EP0822478A2
    • 1998-02-04
    • EP97118054.2
    • 1993-09-02
    • NEC CORPORATION
    • Tamagawa, Akio
    • G06F1/04H03K3/02
    • H03K3/356026H02M3/07H02M2001/009H03K3/356121
    • A voltage converting circuit of the charge pump step-up type includes a first circuit means for charging each of first and second capacitors with the voltage of a voltage source at a first timing. A second circuit operates to serially connect the charged first capacitor between a positive electrode of the voltage source and a positive voltage output terminal at a second timing so that a positive voltage which is a double of the voltage source voltage, is supplied from positive voltage output terminal. A third circuit operates to the charged first and second capacitors in series between a ground terminal and a negative voltage output terminal at a third timing so that a negative voltage which is a double of the voltage source voltage, is supplied from the negative voltage output terminal. Since the positive voltage and the negative voltage are generated independently of each other, a voltage variation on one of the positive and negative voltage output terminals caused by an external load causes no voltage variation on the other of the positive and negative voltage output terminals.
    • 电荷泵升压型的电压转换电路包括:第一电路装置,用于在第一定时对第一和第二电容器的每个电压与电压源的电压进行充电。 第二电路用于在第二定时将电压源的正电极和正电压输出端子之间的充电的第一电容器串联连接,从而从正电压输出端提供作为电压源电压的两倍的正电压 终奌站。 第三电路在第三定时对接地端子和负电压输出端子串联的充电的第一和第二电容器进行操作,从而从负电压输出端子提供作为电压源电压的两倍的负电压 。 由于正电压和负电压彼此独立地产生,所以由外部负载引起的正电压输出端子和负电压输出端子之一上的电压变化在正负电压输出端子上不产生电压变化。