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    • 1. 发明授权
    • Power circuit including inrush current limiter, and integrated circuit
including the power circuit
    • 包括浪涌电流限制器的电源电路和包括电源电路的集成电路
    • US6150800A
    • 2000-11-21
    • US395971
    • 1999-09-15
    • Masayoshi KinoshitaShiro SakiyamaJun KajiwaraKatsuji SatomiHiroo YamamotoKatsuhiro Ootani
    • Masayoshi KinoshitaShiro SakiyamaJun KajiwaraKatsuji SatomiHiroo YamamotoKatsuhiro Ootani
    • G05F1/56G05F1/573G05F1/575H02H9/02G05F1/40
    • G05F1/573G05F1/575Y10S323/908
    • A power circuit including means for preventing the generation of an inrush current during the power circuit's initial operation without increasing the size of the power circuit is described. The power circuit comprises an output transistor for supplying a current from a power supply to an output terminal, and a differential amplifier for controlling the current supplied by the output transistor in such a manner as to regulate a voltage at the output terminal based on a preset reference voltage. A limiting transistor is provided as a source follower on a current path at the output stage of the differential amplifier. The gate potential of the output transistor is controlled using the source potential of the limiting transistor. Before the power circuit starts to operate, an operation controller charges a capacitor to control the gate potential of the limiting transistor so that during the initial operation of the power circuit, the capacitor is discharged by using a current source. Accordingly, during the initial operation of the power circuit, the gate potential of the limiting transistor gradually decreases while the gate-source voltage of the output transistor gradually increases. As a result, the generation of the inrush current can be suppressed.
    • 描述了一种电源电路,其包括用于在电源电路的初始操作期间防止产生浪涌电流的装置,而不增加电源电路的尺寸。 电源电路包括用于从电源向输出端子提供电流的输出晶体管,以及差分放大器,用于根据预设的方式控制由输出晶体管提供的电流,以调节输出端子处的电压 参考电压。 在差分放大器的输出级的电流路径上提供限制晶体管作为源极跟随器。 使用限制晶体管的源极电位来控制输出晶体管的栅极电位。 在电源电路开始工作之前,操作控制器对电容器充电以控制限流晶体管的栅极电位,使得在电源电路的初始操作期间,通过使用电流源来放电电容器。 因此,在电源电路的初始动作期间,限制晶体管的栅极电位逐渐降低,同时输出晶体管的栅极 - 源极电压逐渐增大。 结果,可以抑制浪涌电流的产生。
    • 4. 发明授权
    • Cell library database and design aiding system
    • 细胞库数据库和设计辅助系统
    • US06490715B1
    • 2002-12-03
    • US09550352
    • 2000-04-14
    • Toshiyuki MoriwakiShiro SakiyamaHiroo YamamotoJun KajiwaraMasayoshi Kinoshita
    • Toshiyuki MoriwakiShiro SakiyamaHiroo YamamotoJun KajiwaraMasayoshi Kinoshita
    • G06F1750
    • G06F17/5022
    • A cell library database includes function information of standard cells which are basic circuits forming a logical device, each of the standard cell comprising at least one of power supply terminal as logical terminals, the function information of the standard cell containing logical information or delay information of the power supply terminal relative to an output terminal, or function information of macro cells which are functional circuits forming a logical device, each of the macro cell comprising at least one of power supply terminals as logical terminals, the function information of the macro cell containing logical information or delay information of said power supply terminals relative to an output terminal. A design aiding system uses the cell library database to execute logical simulation, etc.
    • 单元库数据库包括作为形成逻辑装置的基本电路的标准单元的功能信息,标准单元中的每一个包括作为逻辑端的电源端子中的至少一个,包含逻辑信息或延迟信息的标准单元的功能信息 所述电源端子相对于输出端子,或作为形成逻辑装置的功能电路的宏电池的功能信息,所述宏电池单元包括作为逻辑端子的电源端子中的至少一个,所述宏单元的功能信息包含 所述电源端子相对于输出端子的逻辑信息或延迟信息。 设计辅助系统使用单元库数据库执行逻辑仿真等。
    • 5. 发明授权
    • Power supply voltage detection circuit
    • 电源电压检测电路
    • US06686782B2
    • 2004-02-03
    • US10053552
    • 2002-01-24
    • Masayoshi KinoshitaJun KajiwaraShiro Sakiyama
    • Masayoshi KinoshitaJun KajiwaraShiro Sakiyama
    • H03K1722
    • G01R19/16538H03K17/223
    • A power supply voltage detection circuit includes a voltage division circuit for linearly dividing a power supply voltage, a reference voltage circuit for providing a reference voltage, and a comparison circuit for comparing the output voltage from the voltage division circuit and the reference voltage from the reference voltage circuit. The power supply voltage detection circuit outputs a signal upon detecting that the power supply voltage is equal to or higher than the reference voltage. A PMOS transistor is provided between the voltage division circuit and the comparison circuit. The PMOS transistor includes a source terminal connected to an output terminal of the voltage division circuit, a drain terminal connected to an input terminal of the comparison circuit, and a gate terminal connected to the ground. Until the output voltage from the comparison circuit is higher than the threshold voltage of the PMOS transistor, the PMOS transistor remains OFF, thereby canceling the input of the output voltage signal from the voltage division circuit to the comparison circuit. Thus, without using external components, the signal is prevented from being erroneously output due to the output voltage from the voltage division circuit rising over, without crossing, the reference voltage from the reference voltage circuit during a sharp rise of the power supply voltage.
    • 电源电压检测电路包括用于线性分割电源电压的分压电路,用于提供参考电压的参考电压电路和用于比较来自分压电路的输出电压和参考电压的参考电压的比较电路 电压电路。 电源电压检测电路在检测到电源电压等于或高于参考电压时输出信号。 在分压电路和比较电路之间设置PMOS晶体管。 PMOS晶体管包括连接到分压电路的输出端的源极端子,连接到比较电路的输入端子的漏极端子和连接到地的栅极端子。 在比较电路的输出电压高于PMOS晶体管的阈值电压之前,PMOS晶体管保持截止状态,从而消除从分压电路到比较电路的输出电压信号的输入。 因此,在不使用外部部件的情况下,由于来自分压电路的输出电压在电源电压的急剧上升期间不与基准电压电路交叉而不会交叉,所以不会错误地输出信号。
    • 6. 发明授权
    • Power source system for reducing power consumption in an intermittent mode of operation
    • 电源系统,用于在间歇运行模式下降低功耗
    • US06531856B2
    • 2003-03-11
    • US09920670
    • 2001-08-03
    • Shiro SakiyamaJun KajiwaraMasayoshi Kinoshita
    • Shiro SakiyamaJun KajiwaraMasayoshi Kinoshita
    • G05F140
    • H02M1/15H02J7/345
    • During an intermittent operation mode, a switch is normally opened and a capacitor with a large capacitance is isolated from a circuit. Under this condition, a power source voltage is intermittently supplied to a driven device. Since a charge/discharge current of the capacitor during the intermittent operation mode is limited to the charge/discharge current of the capacitor with a small capacitance, the power consumption can be lowered. In addition, since no switch exists in the current path from a power source voltage conversion circuit to the driven device, there is no drop, due to a switch, in the voltage supplied from the power source voltage conversion circuit to the driven device. On the other hand, during a continuous operation mode in which power source voltage is continuously provided to the driven device, the switch is normally closed and a capacitor with a large capacitance is connected to the power source system. Then the noise level in the supplied power is lowered.
    • 在间歇操作模式期间,开关通常被打开,并且具有大电容的电容器与电路隔离。 在这种情况下,电源电压被间歇地供给到被驱动装置。 由于在间歇操作模式期间电容器的充电/放电电流被限制为具有小电容的电容器的充电/放电电流,所以可以降低功耗。 此外,由于在从电源电压转换电路到被驱动装置的电流路径中不存在开关,因此从电源电压转换电路向被驱动装置提供的电压不会由于开关而下降。 另一方面,在向被驱动装置连续提供电源电压的连续运转模式中,开关常闭,电容器电容器与电源系统连接。 然后降低供电电源中的噪声电平。