| 摘要 |
An integrated light-emitting diode driver circuit (10) includes a bi-directional power line communication unit (102), a power conversion module (104), and a constant current/constant voltage control unit (106). The bi-directional PLC unit (102) receives an AC voltage (Vac), and converts a modulation signal (Spwm) on the AC voltage (Vac) to generate a light-dimming control signal (Sdim). The power conversion module (104) receives the AC voltage (Vac) and converts the AC voltage (Vac) to generate an output voltage (Vo). The CC/CV control unit (106) receives the light-dimming control signal (Sdim) to generate a dimming constant current (Idim) or a dimming constant voltage (Vdim). The integrated LED driver circuit (10) outputs the dimming constant current (Idim) or the dimming constant voltage (Vdim) and the output voltage (Vo) to drive a LED string (20). |
