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    • 1. 发明申请
    • CHARGE PUMP CIRCUIT, CONTROL METHOD THEREOF, AND SEMICONDUCTOR INTEGRATED CIRCUIT
    • 充电泵电路,其控制方法和半导体集成电路
    • US20120299642A1
    • 2012-11-29
    • US13522114
    • 2011-11-10
    • Takeshi HamadaYoshihiko Koizumi
    • Takeshi HamadaYoshihiko Koizumi
    • G05F3/02
    • H02M3/07G11C5/145
    • There is provided a charge pump circuit suited for reducing the power consumption. A capacitor 201a, a capacitor 201b, a capacitor 201c, and switching elements 202a to 202k, for electrically connecting or separating capacitors 201a, 201b, and 201c, repeats: a first state where charge supplied from an input power-supply voltage VDD is accumulated in the capacitors 201a and 201b; a second state where the charge accumulated in the capacitor 201a is transferred to the third capacitor 201c, and a positive output power-supply voltage is held by the charge accumulated in the capacitor 201b; a third state where the charge supplied from an input power supply is accumulated in the capacitors 201a and 201b; and a fourth state where the charge accumulated in the capacitor 201b is transferred to the third capacitor 201c, and the positive output power-supply voltage VCC is held by the charge accumulated in the capacitor 201a.
    • 提供了适合于降低功耗的电荷泵电路。 用于电连接或分离电容器201a,201b和201c的电容器201a,电容器201b,电容器201c和开关元件202a至202k重复:从输入电源电压VDD提供的电荷被累积的第一状态 在电容器201a和201b中; 电容器201a中累积的电荷被传送到第三电容器201c的第二状态,并且通过在电容器201b中累积的电荷来保持正输出电源电压; 第三状态,其中从输入电源供应的电荷累积在电容器201a和201b中; 以及第四状态,其中累积在电容器201b中的电荷被传送到第三电容器201c,并且正输出电源电压VCC由积累在电容器201a中的电荷保持。
    • 2. 发明授权
    • Charge pump circuit, control method thereof, and semiconductor integrated circuit
    • 电荷泵电路,其控制方法和半导体集成电路
    • US08446213B2
    • 2013-05-21
    • US13522114
    • 2011-11-10
    • Takeshi HamadaYoshihiko Koizumi
    • Takeshi HamadaYoshihiko Koizumi
    • G05F1/10
    • H02M3/07G11C5/145
    • There is provided a charge pump circuit suited for reducing the power consumption. A capacitor 201a, a capacitor 201b, a capacitor 201c, and switching elements 202a to 202k, for electrically connecting or separating capacitors 201a, 201b, and 201c, repeats: a first state where charge supplied from an input power-supply voltage VDD is accumulated in the capacitors 201a and 201b; a second state where the charge accumulated in the capacitor 201a is transferred to the third capacitor 201c, and a positive output power-supply voltage is held by the charge accumulated in the capacitor 201b; a third state where the charge supplied from an input power supply is accumulated in the capacitors 201a and 201b; and a fourth state where the charge accumulated in the capacitor 201b is transferred to the third capacitor 201c, and the positive output power-supply voltage VCC is held by the charge accumulated in the capacitor 201a.
    • 提供了适合于降低功耗的电荷泵电路。 用于电连接或分离电容器201a,201b和201c的电容器201a,电容器201b,电容器201c和开关元件202a至202k重复:从输入电源电压VDD提供的电荷被累积的第一状态 在电容器201a和201b中; 电容器201a中累积的电荷被传送到第三电容器201c的第二状态,并且通过在电容器201b中累积的电荷来保持正输出电源电压; 第三状态,其中从输入电源供应的电荷累积在电容器201a和201b中; 以及第四状态,其中累积在电容器201b中的电荷被传送到第三电容器201c,并且正输出电源电压VCC由积累在电容器201a中的电荷保持。
    • 3. 发明授权
    • Oscillation type inertia force sensor
    • 振荡式惯性力传感器
    • US09003884B2
    • 2015-04-14
    • US13569209
    • 2012-08-08
    • Yoshitaka KatoAkira MoriMakoto NaritaYoshihiko Koizumi
    • Yoshitaka KatoAkira MoriMakoto NaritaYoshihiko Koizumi
    • G01C19/56G01C19/5776
    • G01C19/5776
    • An oscillation type inertia force sensor includes an oscillator, an oscillation circuit unit, and a detection circuit unit. The oscillation circuit unit functions as a self oscillation circuit of a closed loop with the oscillator as a resonant element, and includes an AGC circuit. The AGC circuit includes a VGA circuit, a comparison circuit comparing a predetermined reference voltage with a voltage of the monitor signal to output a control signal based on the compared result, and a pulse width modulation circuit modulating the control signal to a pulse width modulation signal. Based on the pulse width modulation signal, the driving signal is modulated with the output of the VGA circuit switched between an ON state and OFF state to control the degree of the amplification factor of the VGA circuit.
    • 振荡型惯性力传感器包括振荡器,振荡电路单元和检测电路单元。 振荡电路单元用作振荡器作为谐振元件的闭环的自振荡电路,并且包括AGC电路。 AGC电路包括VGA电路,将预定参考电压与监视信号的电压进行比较的比较电路,基于比较结果输出控制信号;以及脉宽调制电路,将控制信号调制为脉宽调制信号 。 基于脉宽调制信号,驱动信号被调制,VGA电路的输出在ON状态和OFF状态之间切换,以控制VGA电路的放大系数的程度。