Power supply device with detection of malfunctioning
    14.
    发明公开
    Power supply device with detection of malfunctioning 有权
    Stromversorgungsgerätmit Fehlfunktionserkennung

    公开(公告)号:EP1178591A1

    公开(公告)日:2002-02-06

    申请号:EP00830547.6

    申请日:2000-07-31

    IPC分类号: H02M3/28

    CPC分类号: H02M3/28 H02M1/32 H02M3/33523

    摘要: The power supply device comprises a DC-DC converter circuit (8) including a power switch (10) and a driving stage (102). The driving stage (102) has a compensation terminal (102b) on which a compensation voltage (V COMP ) is present and which receives a biasing current (I P ), said driving stage (102) comprising a control circuit (107) having an output terminal connected to a control terminal (11) of the power switch (10) and disconnection-detecting means (105) connected to said compensation terminal (102b) and generating a signal for permanent turning-off of said power switch (10) when the biasing current (I P ) drops below a current-threshold value (I T ). The driving stage (102) moreover comprises over-voltage detecting means (104) connected to the compensation terminal (102b) and generating a signal for temporary turning-off of said power switch (10) when said compensation voltage (V COMP ) exceeds a voltage-threshold value (V T ).

    摘要翻译: 电源装置包括包括电源开关(10)和驱动级(102)的DC-DC转换器电路(8)。 驱动级(102)具有在其上存在补偿电压(VCOMP)并且接收偏置电流(IP)的补偿端子(102b),所述驱动级(102)包括具有输出端子 连接到所述电源开关(10)的控制端子(11)和连接到所述补偿端子(102b)的断开检测装置(105),并且当所述偏置 当前(IP)下降到当前阈值(IT)以下。 驱动级(102)还包括连接到补偿端子(102b)的过电压检测装置(104),并且当所述补偿电压(VCOMP)超过电压时产生用于暂时关断所述电源开关(10)的信号 - 阈值(VT)。