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    • 2. 发明申请
    • STANDARD VOLTAGE GENERATION CIRCUIT
    • 标准电压发生电路
    • US20080157861A1
    • 2008-07-03
    • US12039227
    • 2008-02-28
    • Junichi NAKAMichiko TokumaruYoichi OkamotoKoji Oka
    • Junichi NAKAMichiko TokumaruYoichi OkamotoKoji Oka
    • G05F3/16H02J7/00
    • G05F3/262G05F3/242
    • A standard voltage generation circuit is provided with a function of automatically stopping charging when a standard voltage reaches a stable voltage point by rapidly charging a standard voltage stabilization capacitor during transition from a standby state to a normal operation state. The standard voltage generation circuit is also provided with a function of precharging an output terminal of the circuit to a voltage close to the stable voltage by a potential division effect of the capacitor during transition from the standby state to the normal operation state. Thereby, it is possible to prevent an increase in the amount of time that is required until the standard voltage reaches the stable voltage when the state of an analog circuit included in the standard voltage generation circuit changes from its off state to its on state.
    • 标准电压产生电路具有当标准电压达到稳定电压点时自动停止充电的功能,通过在从待机状态转换到正常工作状态的过程中快速充电标准稳压电容器。 标准电压产生电路还具有通过在从待机状态转换到正常工作状态期间电容器的分压效应将电路的输出端子预充电到接近稳定电压的功能。 因此,当包括在标准电压发生电路中的模拟电路的状态从其断开状态变为其接通状态时,可以防止在标准电压达到稳定电压之前所需的时间量的增加。