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    • 86. 发明授权
    • Capacitor reliability for multiple-voltage power supply systems
    • 多电压电源系统的电容可靠性
    • US07113006B2
    • 2006-09-26
    • US11065840
    • 2005-02-25
    • Louis L. HsuRajiv V. JoshiJack Allan Mandelman
    • Louis L. HsuRajiv V. JoshiJack Allan Mandelman
    • H03K5/22H03K5/153H01G23/00
    • H02M3/07
    • A capacitor circuit having improved reliability includes at least first and second capacitors, a first terminal of the first capacitor connecting to a first source providing a first voltage, a first terminal of the second capacitor connecting to a second source providing a second voltage, the first voltage being greater than the second voltage. The capacitor further includes a voltage comparator having a first input for receiving a voltage representative of the first voltage, a second input for receiving a third voltage provided by a third source, and an output for generating a control signal. The control signal is a function of a difference between the voltage representative of the first voltage and the third voltage. A switch is connected to second terminals of the first and second capacitors. The switch is selectively operable in one of at least a first mode and a second mode in response to the control signal, wherein in the first mode the switch is operative to connect the first and second capacitors together in parallel, and in the second mode the switch is operative to connect the first and second capacitors together in series. The first mode is indicative of the voltage representative of the first voltage being less than or about equal to the third voltage, and the second mode is indicative of the voltage representative of the first voltage being greater than the third voltage.
    • 具有改进的可靠性的电容器电路包括至少第一和第二电容器,第一电容器的第一端子连接到提供第一电压的第一源极,第二电容器的第一端子连接到提供第二电压的第二源极,第一电容器 电压大于第二电压。 电容器还包括电压比较器,具有用于接收表示第一电压的电压的第一输入端,用于接收由第三源极提供的第三电压的第二输入端和用于产生控制信号的输出端。 控制信号是代表第一电压和第三电压的电压之差的函数。 开关连接到第一和第二电容器的第二端子。 响应于控制信号,开关选择性地可操作于至少第一模式和第二模式之一中,其中在第一模式中,开关可操作以并联连接第一和第二电容器,并且在第二模式中, 开关可操作以串联连接第一和第二电容器。 第一模式表示代表第一电压的电压小于或等于第三电压,第二模式表示代表第一电压的电压大于第三电压。