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    • 41. 发明申请
    • METHOD FOR REGULATING AN OUTPUT VOLTAGE
    • 用于调节输出电压的方法
    • WO2009134249A1
    • 2009-11-05
    • PCT/US2008/061914
    • 2008-04-29
    • SEMICONDUCTOR COMPONENTS INDUSTRIES, L.L.C.SAPHON, RémyBASSO, Christophe
    • SAPHON, RémyBASSO, Christophe
    • H02M3/156
    • H02M3/156H02M2001/0022
    • A method for regulating the output voltage of a power supply. A boost PWM switching converter adjusts the gate drive signals to a switching transistor and a pass transistor so that the power supply has an operating frequency, Fs, based on a comparison between a parameter and a reference. The parameter may be a ratio of an input voltage to an output voltage, a difference between the output voltage and the input voltage, or the value of an input voltage. In accordance with the comparison between the parameter and the reference, the switching control circuit linearly decreases the operating frequency of the power supply. By changing the operating frequency, the output and input voltages of the power regulator may be almost equal to each other when operating with a control signal having a low duty cycle while maintaining a low output voltage ripple and a low inductor current ripple.
    • 一种用于调节电源的输出电压的方法。 升压型PWM开关转换器将栅极驱动信号调整到开关晶体管和传输晶体管,使得电源具有基于参数和参考之间的比较的工作频率Fs。 该参数可以是输入电压与输出电压的比值,输出电压和输入电压之间的差值,或输入电压的值。 根据参数与参考的比较,开关控制电路线性地减小电源的工作频率。 通过改变工作频率,当用具有低占空比的控制信号进行操作时,功率调节器的输出和输入电压可以彼此几乎相等,同时保持低输出电压纹波和低电感电流纹波。