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    • 6. 发明授权
    • Charge pump circuit and method of controlling the same
    • 电荷泵电路及其控制方法
    • US07576592B2
    • 2009-08-18
    • US12068281
    • 2008-02-05
    • Hyo-jin KimJae-sung KangSi-woo Kim
    • Hyo-jin KimJae-sung KangSi-woo Kim
    • G05F1/10
    • H01L27/0222H02M3/07
    • A charge pump circuit and related method are provided. The charge pump circuit includes first, second and third voltage generation units, first and second control units, and a latch-up prevention unit. The first generation unit regulates a first output signal, the second generation unit boosts a second output signal, and the third generation unit boosts a third output signal in response to the first and second output signals. The first control unit is connected between the first generation unit and the third generation unit, and the second control unit is connected between the second generation unit and the third generation unit. The first and second control units block respective outputs of the first and second generation units during the boosting time for the second output signal. The latch-up prevention unit prevents a latch-up operation caused by a parasitic transistor until the third output signal is maintained at a third voltage.
    • 提供电荷泵电路及相关方法。 电荷泵电路包括第一,第二和第三电压产生单元,第一和第二控制单元以及闭锁预防单元。 第一代单元调节第一输出信号,第二代单元升高第二输出信号,第三代单元响应于第一和第二输出信号升高第三输出信号。 第一控制单元连接在第一生成单元和第三生成单元之间,第二控制单元连接在第二生成单元和第三生成单元之间。 第一和第二控制单元在第二输出信号的升压时间期间阻止第一和第二发电单元的相应输出。 闩锁防止单元防止由寄生晶体管引起的闩锁操作,直到第三输出信号保持在第三电压。
    • 7. 发明授权
    • Voltage generator that prevents latch-up
    • 电压发生器,防止闩锁
    • US07990204B2
    • 2011-08-02
    • US12117445
    • 2008-05-08
    • Hyo-jin KimJae-sung KangJong-won KimSi-woo Kim
    • Hyo-jin KimJae-sung KangJong-won KimSi-woo Kim
    • G05F1/10
    • G09G3/3696H02M3/073H02M2001/009
    • A voltage generator that prevents latch-up includes: a charge pump circuit that is controlled by first through third enable signals, boosts an internal power voltage generated from an external power voltage, and generates first through fourth voltages; a detector that detects the first through third voltages and generates first through third flag signals that go logic high when the first through third voltages reach predetermined respective voltage levels and maintain logic low when the voltages do not reach the predetermined respective voltage levels; and a charge pump controller that receives the first through third flag signals, and generates the first through third enable signals to have the first through fourth voltages sequentially generated. The voltage generator can prevent latch-up that may occur in a boosting mode or in a normal operation mode.
    • 防止闩锁的电压发生器包括:由第一至第三使能信号控制的电荷泵电路,升高由外部电源电压产生的内部电源电压,并产生第一至第四电压; 检测器,其检测第一至第三电压并产生第一至第三标志信号,当第一至第三电压达到预定的各个电压电平时,第一至第三标志信号变为逻辑高电平,并且当电压未达到预定的各个电压电平时维持逻辑低电平; 以及电荷泵控制器,其接收第一至第三标志信号,并且产生第一至第三使能信号以顺序产生第一至第四电压。 电压发生器可以防止在升压模式或正常工作模式下可能发生的闩锁。