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    • 8. 发明授权
    • Power supply device
    • 电源设备
    • US07852059B2
    • 2010-12-14
    • US11902089
    • 2007-09-19
    • Takuya IshiiMikio MotomoriKazuhito KimuraYoichi DeguchiSatoshi WadaYoshihisa Minami
    • Takuya IshiiMikio MotomoriKazuhito KimuraYoichi DeguchiSatoshi WadaYoshihisa Minami
    • G05F1/40
    • G05F1/575
    • A power supply device includes an inductor controlled by switching to be charged or discharged such that a DC input voltage is boosted and a capacitor which smoothes the boosted voltage to generate a DC output voltage. Specifically, the power supply device further includes a transistor connected between the inductor and the capacitor to carry out a rectification function; an output voltage determination circuit which refers to the DC input voltage and the DC output voltage to determine the level of these voltages; and a current control circuit which controls a current flowing through the transistor such that the current has a predetermined value when the output voltage determination circuit determines that the DC output voltage is lower than the DC input voltage.
    • 电源装置包括通过切换进行充电或放电控制的电感器,使得DC输入电压升压,以及电容器,其使升压电压平滑以产生DC输出电压。 具体地,电源装置还包括连接在电感器和电容器之间的晶体管,以实现整流功能; 输出电压确定电路,其参考DC输入电压和DC输出电压以确定这些电压的电平; 以及电流控制电路,其控制流过所述晶体管的电流,使得当所述输出电压确定电路确定所述DC输出电压低于所述DC输入电压时,所述电流具有预定值。