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    • 1. 发明授权
    • Drive control signal generating circuit
    • 驱动控制信号发生电路
    • US08648557B2
    • 2014-02-11
    • US13247050
    • 2011-09-28
    • Takashi OgawaTakahisa NakaiTsutomu Murata
    • Takashi OgawaTakahisa NakaiTsutomu Murata
    • H02K5/00
    • H02P6/085H02P6/26
    • A drive control signal generating circuit that generates a drive control signal for driving a motor includes an output control circuit that includes a flip-flop in which a state changes by a rotational state signal of the motor crossing a reference value and generates a motor drive control signal according to the state of the flip-flop, a clock generating circuit that generates a clock that defines a time of reading data in the flip-flop of the output control circuit; and a PWM conversion circuit that PWM-converts the drive control signal using the clock as a PWM signal. The clock has a frequency in which the output control circuit operates and has a duty ratio of the PWM signal.
    • 产生用于驱动电动机的驱动控制信号的驱动控制信号产生电路包括:输出控制电路,包括触发器,其中状态由电动机的旋转状态信号变化而与参考值相交,并产生电动机驱动控制 信号根据触发器的状态产生时钟产生电路,其生成定义在输出控制电路的触发器中读取数据的时间的时钟; 以及使用该时钟作为PWM信号对驱动控制信号进行PWM转换的PWM变换电路。 时钟具有输出控制电路工作的频率,并具有PWM信号的占空比。