PWM제어기
    2.
    发明公开
    PWM제어기 有权
    脉冲宽度调制控制器

    公开(公告)号:KR1020130065569A

    公开(公告)日:2013-06-19

    申请号:KR1020120046072

    申请日:2012-05-02

    CPC classification number: H02H7/085 H02H7/0833 H02P27/08

    Abstract: PURPOSE: A PWM controller is provided to realize a protecting function against a short circuit in a signal wire or a power terminal without an separate element, thereby reducing the price of a motor controller and improving reliability. CONSTITUTION: A comparator (400) compares the current value of multiple FETs and FET drivers (500) to a reference value of overcurrent. The reference value of overcurrent is determined based on the FET having the largest capacity. The comparator decides that the FET current value is bigger than the reference value of overcurrent in case both ends (M+, M-) of a motor (M) is circuit-shorted. A MICOM (200) controls a motor, performs a circuit protecting function, and turns off the FET drivers in case the FET current value is bigger than the reference value of overcurrent according to the result of the comparator. [Reference numerals] (AA,100) Main controller; (BB) Current value; (CC) Overcurrent

    Abstract translation: 目的:提供PWM控制器,以实现对信号线或电源端子短路的保护功能,无需单独的元件,从而降低电机控制器的价格并提高可靠性。 构成:比较器(400)将多个FET和FET驱动器(500)的电流值与过电流的参考值进行比较。 基于具有最大容量的FET确定过电流的参考值。 在电动机(M)的两端(M +,M-)电路短路的情况下,比较器确定FET电流值大于过电流的参考值。 根据比较器的结果,MICOM(200)控制电动机,执行电路保护功能,并在FET电流值大于过电流参考值的情况下关闭FET驱动器。 (附图标记)(AA,100)主控制器; (BB)当前值; (CC)过电流

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