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    • 3. 发明申请
    • DC-DC converter and control circuit thereof
    • DC-DC转换器及其控制电路
    • US20070096711A1
    • 2007-05-03
    • US11545050
    • 2006-10-06
    • Takuya IshiiHiroki AkashiMakoto IshimaruYoshiyuki Konishi
    • Takuya IshiiHiroki AkashiMakoto IshimaruYoshiyuki Konishi
    • G05F1/00
    • H02M3/1563
    • The present invention is intended to provide a DC-DC converter, in which the relationship between the duty ratio of a drive signal and the output DC voltage is nonlinear, being characterized in that the relationship between an error signal and the output DC voltage is linear, and that the design of stabilizing the feedback system is facilitated. The DC-DC converter comprises an error-amplifier circuit for generating the error signal that is obtained by amplifying the error between the output and a target value, an oscillating circuit for generating a triangular wave signal having an amplitude corresponding to the error signal, and a comparison circuit for comparing the triangular wave signal with a reference signal having a predetermined value and for generating the drive signal to turn ON/OFF a switching device.
    • 本发明旨在提供一种DC-DC转换器,其中驱动信号的占空比与输出DC电压之间的关系是非线性的,其特征在于误差信号与输出DC电压之间的关系是线性的 并且促进了稳定反馈系统的设计。 DC-DC转换器包括用于产生通过放大输出与目标值之间的误差而获得的误差信号的误差放大器电路,产生具有对应于误差信号的振幅的三角波信号的振荡电路,以及 比较电路,用于将三角波信号与具有预定值的参考信号进行比较,并产生用于导通/关断开关装置的驱动信号。
    • 6. 发明授权
    • Charge pump circuit
    • 电荷泵电路
    • US07541859B2
    • 2009-06-02
    • US11753671
    • 2007-05-25
    • Hiroki AkashiTakuya IshiiYoshiyuki KonishiMakoto Ishimaru
    • Hiroki AkashiTakuya IshiiYoshiyuki KonishiMakoto Ishimaru
    • G05F3/16H02M3/18
    • H02M3/07
    • For downsizing a charge pump circuit which selects a voltage multiple ratio, converts its input voltage and outputs the converted voltage, the number of switching devices of the charge pump circuit is reduced. The control circuit of the charge pump circuit is configured to carry out switching control for multiple switching devices and charge/discharge at least a first capacitor and a second capacitor so as to have at least a 2Vi mode for alternately repeating a first state and a second state, and a 1.5Vi mode for alternately repeating a third state and a fourth state, thereby carrying out boosting depending on the detected input voltage.
    • 为了减小选择电压倍数的电荷泵电路,转换其输入电压并输出转换的电压,减少了电荷泵电路的开关器件的数量。 电荷泵电路的控制电路被配置为对多个开关器件执行开关控制,并且至少对第一电容器和第二电容器进行充电/放电,以具有至少2Vi模式,用于交替地重复第一状态和第二状态 状态和用于交替重复第三状态和第四状态的1.5Vi模式,从而根据检测到的输入电压进行升压。