DC-DC CONVERTER CURRENT SENSING
    40.
    发明申请
    DC-DC CONVERTER CURRENT SENSING 有权
    DC-DC转换器电流传感器

    公开(公告)号:US20120049894A1

    公开(公告)日:2012-03-01

    申请号:US13289134

    申请日:2011-11-04

    IPC分类号: G11C27/02

    摘要: A sample-and-hold (SAH) current estimating circuit and a first switching power supply are disclosed. The first switching power supply provides a first switching power supply output signal based on a series switching element and a setpoint. The SAH current estimating circuit samples a voltage across the series switching element of the first switching power supply during an ON state of the series switching element and during a ramping signal peak to provide an SAH output signal based on an estimate of an output current of the first switching power supply output signal. The first switching power supply selects the ON state of the series switching element, such that during the ramping signal peak, the series switching element has a series current having a magnitude, which is about equal to a magnitude of the output current of the first switching power supply output signal.

    摘要翻译: 公开了采样保持(SAH)电流估计电路和第一开关电源。 第一开关电源基于串联开关元件和设定点提供第一开关电源输出信号。 SAH电流估计电路在串联开关元件的导通状态期间和在斜坡信号峰值期间对第一开关电源的串联开关元件两端的电压进行采样,以基于对输出电流的输出电流的估计提供SAH输出信号 第一开关电源输出信号。 第一开关电源选择串联开关元件的导通状态,使得在斜坡信号峰值期间,串联开关元件具有串联电流,其大小等于第一开关的输出电流的幅度 电源输出信号。