DIGITAL POWER CONTROLLER
    1.
    发明公开
    DIGITAL POWER CONTROLLER 有权
    数字电源控制

    公开(公告)号:EP1149511A2

    公开(公告)日:2001-10-31

    申请号:EP99962489.3

    申请日:1999-12-07

    IPC分类号: H05B41/00

    CPC分类号: H05B37/0263 H05B41/28

    摘要: A power controller for fluorescent lamp dimming is disclosed, using all digital internal and external programmable controls. A specific ASIC is described. A gate array and microcomputer share parallel functions with fast sub-functions carried out by the gate array and slower sub-functions carried out by a micro-processor. Circuits are provided for automatic shut down when a high frequency ground fault is detected; for connecting the filaments of gas discharge lamps in a series/parallel circuit; for driving the load as close to resonance as possible but in an inductive mode; and for developing a dead time between high side and low side switches which is related to transformer current, switch current, bridge voltage or bridge voltage dv/dt.