A voltage down-converter with reduced ripple
    2.
    发明公开
    A voltage down-converter with reduced ripple 有权
    Spannungs-Abwärts-Wandler mit reduzierter Welligkeit

    公开(公告)号:EP1667158A1

    公开(公告)日:2006-06-07

    申请号:EP04105354.7

    申请日:2004-10-28

    IPC分类号: G11C5/14 G11C16/30

    CPC分类号: G11C5/147 G11C16/30

    摘要: A voltage-down converter ( 125 ) for providing an output voltage (Vo) lower than a power supply voltage (Vdd) of the converter is proposed. The converter includes voltage regulation means ( 205 ) for obtaining an intermediate voltage (Vr) corresponding to the output voltage from the power supply voltage by controlling a variable-conductivity element ( Tr ) with a control signal (Vg) resulting from a comparison between the intermediate voltage (Vr) and a reference voltage (Vbg), and an output stage ( 220,225 1 - 225 N ) for obtaining the output voltage from the power supply voltage by controlling a further variable-conductivity element ( Tsb,T 1 - T N ) with the control signal, wherein the further variable-conductivity element has a modular structure with at least one set ( MM,ML,MH ) of multiple basic modules ( 225 1 - 225 N ), the converter further including means ( 230,SW 1 - SW N ) for enabling and/or disabling the modules of each set in succession according to a comparison between the output voltage and the intermediate voltage.

    摘要翻译: 提出了用于提供低于转换器的电源电压(Vdd)的输出电压(Vo)的降压转换器(125)。 转换器包括电压调节装置(205),用于通过利用控制信号(Vg)控制可变电导率元件(Tr)来获得与来自电源电压的输出电压相对应的中间电压(Vr) 用于通过控制另外的可变电导率元件(Tsb,T 1 -TN)来获得来自电源电压的输出电压的输出级(220,225×1〜225N)的中间电压(Vr)和参考电压(Vbg) 与所述控制信号相关联,其中所述另一可变导电元件具有至少一个多个基本模块(225 1至225 N)的组(MM,ML,MH)的模块化结构,所述转换器还包括装置(230,SW 1 - SW N),用于根据输出电压和中间电压之间的比较来连续地启用和/或禁用每组的模块。