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    Control apparatus for a load supply device
    1.
    发明公开
    Control apparatus for a load supply device 有权
    RegelvorrichtungfürLastspeisungsgerät

    公开(公告)号：EP2202886A1

    公开(公告)日：2010-06-30

    申请号：EP09180404.7

    申请日：2009-12-22

    Applicant: STMicroelectronics Srl

    Inventor： Maiocchi, Giuseppe

    IPC: H03M1/08 ,  H03F3/217 ,  H03M1/82 ,  H03M3/02 ,  G06F1/025 ,  G05F3/16

    CPC classification number: H03M1/0845 ,  H03M1/822 ,  H03M3/324 ,  H03M3/506

    Abstract: A control apparatus for a supply device (5) of a load (2), the supply device is of switching type and is connected between a supply voltage (Vdd) and a reference voltage (GND). The apparatus comprises a sigma-delta device (10) having an input terminal at which is present a first digital signal (SDin), and being capable of providing a pulse-density modulation signal (Sdout) at the output terminal; the sigma-delta device comprises a feedback circuit (11) capable of sending to the input terminal (IN) of the sigma-delta device (10) a second digital signal (SDfb) whose value depends on the value of the output signal (SDout), and the apparatus comprises means (20) capable of digitalizing said supply voltage and of providing a further digital signal (Sg). The feedback circuit (16) comprises a terminal (Ext) capable of receiving the further digital signal (Sg), and the sigma-delta device has a gain (G) such that the output digital signal (Sdout) is proportional to the inverse of said further digital signal (Sg). ( Fig. 2 )

    Abstract translation: 一种用于负载（2）的供给装置（5）的控制装置，所述供给装置是开关型的，并且连接在电源电压（Vdd）和参考电压（GND）之间。 该装置包括具有输入端的Σ-Δ装置（10），在该输入端处存在第一数字信号（SDin），并且能够在输出端提供脉冲密度调制信号（Sdout）; Σ-Δ装置包括能够向Σ-Δ装置（10）的输入端（IN）发送第二数字信号（SDfb）的反馈电路（11），其值取决于输出信号的值（SDout ），并且该装置包括能够对所述电源电压进行数字化并提供另外的数字信号（Sg）的装置（20）。 反馈电路（16）包括能够接收另外的数字信号（Sg）的终端（Ext），并且Σ-Δ装置具有增益（G），使得输出数字信号（Sdout）与 所述另外的数字信号（Sg）。 （图2）

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