Control circuit for current mode buck converter
    1.
    发明公开
    Control circuit for current mode buck converter 有权
    SteuerschaltungfürStrombetriebsarten-Abwärtswandler

    公开(公告)号:EP1632827A1

    公开(公告)日:2006-03-08

    申请号:EP04020456.2

    申请日:2004-08-27

    IPC分类号: G05F1/62 H02M3/158

    CPC分类号: H02M3/1588 Y02B70/1466

    摘要: A control circuit for a switch element (T1) in a switching mode converter, used to convert an input voltage (Vin) into an output voltage (Vout).
    The circuit comprises:

    a pulse width modulator circuit (13), configurated so as to provide a pulse-width-modulated actuating signal (S1) for the switch element (T1) depending on a regulating signal (S14) dependent on the output voltage (Vout) and a current measurement signal (Vc) dependent on a current through an inductive storage element (Lout),
    an arrangement (20) that provides the current measurement signal (Vc), wherein the arrangement (20) for providing the current measurement signal is a measuring and regulating arrangement, configured so as to simulate the current measurement signal (Vc) from a signal dependent on the output voltage (Vout), a signal dependent on the difference between the input voltage (Vin) and the output voltage (Vout), and at least a first sampled value of a signal (Vs) proportional to the current (Iout) across the inductive storage element (Lout) during a period of the pulse-width-modulated actuating signal (S1).

    摘要翻译: 一种开关模式转换器中用于将输入电压(Vin)转换为输出电压(Vout)的开关元件(T1)的控制电路。 该电路包括:脉冲宽度调制器电路(13),其配置为根据取决于输出电压的调节信号(S14)为开关元件(T1)提供脉冲宽度调制的致动信号(S1) Vout)和取决于通过电感存储元件(Lout)的电流的电流测量信号(Vc),提供电流测量信号(Vc)的装置(20),其中用于提供电流测量信号的装置(20) 是一种测量和调节装置,其被配置为根据取决于输出电压(Vout)的信号来模拟电流测量信号(Vc),该信号取决于输入电压(Vin)和输出电压(Vout)之间的差 )以及在脉冲宽度调制的致动信号(S1)的周期期间与电感性存储元件(Lout)两端的电流(Iout)成比例的信号(Vs)的至少第一采样值。

    Method for actuating a switch in a transformer stage of a multiphase DC voltage transformer, and the multiphase DC voltage transformer
    3.
    发明公开
    Method for actuating a switch in a transformer stage of a multiphase DC voltage transformer, and the multiphase DC voltage transformer 审中-公开
    一种用于在多相DC-DC转换器的转换器级致动开关的方法,和多相DC-DC转换器

    公开(公告)号:EP1560322A1

    公开(公告)日:2005-08-03

    申请号:EP04001673.5

    申请日:2004-01-27

    IPC分类号: H02M3/158 H02J1/10

    CPC分类号: H02M3/1584 H02J1/102

    摘要: A method is provided for actuating a switch (SW; T1) regulating the current uptake in one of at least two parallel switch transformer stages (3, 3_1, 3_n) of a multiphase DC voltage transformer, which has an output terminal for connecting a load and producing an output voltage (Vout) from an input voltage (Vin), wherein the method comprises the following steps:

    providing a first control signal (S1), dependent on the output voltage (Vout),
    providing a current metering signal (S4) at least temporarily dependent on an output current (Iout) of the transformer stage (3),
    providing a clocked actuation signal (S3) having a sequence of actuation pulses for the at least one switch (SW; T1), whose duty cycle is controlled to a value depending on the first control signal (S1) and the current metering signal (S4), at which the mean value of the output current (Iout) is proportional to the first control signal (S1).

    摘要翻译: 提供了一种用于致动开关(SW; T1)的方法,调节在一个多相直流电压互感器,其具有输出端,用于连接负载的至少两个平行的开关变压器阶段(3,3_1,3-N)中的一个的当前摄入 并且在输入电压(Vin)输出电压(Vout)从产生,worin该方法包括以下步骤:提供一第一控制信号(S1)依赖于输出电压(Vout),提供了一个电流计量信号(S4) 至少暂时依赖于变压器阶段(3)的输出电流(Iout的),提供具有用于所述至少一个开关致动脉冲(SW; T1)的一个序列的时钟操作信号(S3),其占空比受到控制 到根据所述第一控制信号(S1)和电流计量信号(S4),在该输出电流(I OUT)的平均值正比于第一控制信号(S1)的值。