METHOD AND CIRCUIT FOR REDUCING REGULATOR OUTPUT NOISE
    1.
    发明申请
    METHOD AND CIRCUIT FOR REDUCING REGULATOR OUTPUT NOISE 有权
    减少调节器输出噪声的方法和电路

    公开(公告)号:US20080303492A1

    公开(公告)日:2008-12-11

    申请号:US11759944

    申请日:2007-06-08

    IPC分类号: G05F1/46 G05F1/595

    摘要: A regulator circuit for reducing the output noise when regulators are switched includes a linear regulator and a switching regulator. The linear regulator generates a first regulator voltage from an input voltage with a first feedback loop. The switching regulator generates a second regulator voltage from the input voltage with a second feedback loop, which is connected to the first feedback loop. A loop control circuit controls the first feedback loop so as to lower the first regulator voltage when the switching regulator is activated.

    摘要翻译: 用于在调节器切换时降低输出噪声的调节器电路包括线性稳压器和开关调节器。 线性稳压器利用第一反馈环路从输入电压产生第一调节器电压。 开关稳压器利用第二反馈回路从输入电压产生第二调节器电压,第二反馈回路连接到第一反馈回路。 回路控制电路控制第一反馈回路,以便当开关调节器被激活时降低第一调节器电压。