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    • 15. 发明申请
    • SWITCHING REGULATOR DEVICE AND METHOD WITH ADAPTIVE FREQUENCY FOLDBACK
    • 切换稳压器器件和具有自适应频率折叠的方法
    • US20120038394A1
    • 2012-02-16
    • US12856376
    • 2010-08-13
    • Benjamin M. Rice
    • Benjamin M. Rice
    • H03K5/00H03B28/00
    • H03K5/08
    • A device and method for regulating the output of a power circuit is provided, which in one embodiment includes a pulsewidth modulation (PWM) circuit that produces pulses each having a period of at least a minimum duration, a comparator circuit that produces a control signal, a timer initiated at the output of each pulse and operable to expire no later than expiration of twice the minimum pulsewidth duration, and wherein the PWM circuit is operable to reduce the frequency of outputted pulses in response to receiving the control signal having a first state at expiration of the first timer initiated at the output of a first pulse.
    • 提供了一种用于调节电源电路的输出的装置和方法,其在一个实施例中包括产生每个具有至少最小持续时间的周期的脉冲宽度调制(PWM)电路,产生控制信号的比较器电路, 在每个脉冲的输出处启动的定时器,其可操作以使其不晚于最小脉冲宽度持续时间的两倍,并且其中PWM电路可操作以响应于接收到具有第一状态的控制信号而减小输出脉冲的频率 在第一脉冲的输出处启动的第一定时器的期满。