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    • 3. 发明申请
    • Digital pulse width modulation controlling system and method
    • 数字脉宽调制控制系统及方法
    • US20070165428A1
    • 2007-07-19
    • US11370632
    • 2006-03-08
    • Yi-Chan LinYueh-Mei HouChien-Feng LaiYi-Chen Liu
    • Yi-Chan LinYueh-Mei HouChien-Feng LaiYi-Chen Liu
    • H02M1/12
    • H02M3/157
    • A digital pulse width modulation (DPWM) controlling system for controlling a load of an application circuit with a DPWM unit is provided, which comprises a comparator and a micro-control unit, the comparator receiving a sense signal detected from the load and a reference signal and comparing the sense signal and the reference signal to output an analog comparison signal, and the micro-control unit generating a trigger signal having a minimum pulse width and receiving the analog comparison signal to output a DPWM signal, wherein the micro-control unit adjusts the minimum pulse width of the trigger signal to obtain a pulse width of the DPWM signal in response to the analog comparison signal whenever the sense signal is within a stable duration so as to output the DPWM signal to the application circuit to control the load.
    • 提供了一种用于利用DPWM单元控制应用电路的负载的数字脉宽调制(DPWM)控制系统,其包括比较器和微控制单元,比较器接收从负载检测的感测信号和参考信号 以及比较所述感测信号和所述参考信号以输出模拟比较信号,并且所述微控制单元产生具有最小脉冲宽度的触发信号并接收所述模拟比较信号以输出DPWM信号,其中所述微控制单元调整 触发信号的最小脉冲宽度,以便每当感测信号处于稳定持续时间内时,响应于模拟比较信号获得DPWM信号的脉冲宽度,以便将DPWM信号输出到应用电路以控制负载。