CONTROL CIRCUIT SERVING ITS ROLE IN INTEGRATED CIRCUIT IN ORDER TO PROVIDE CONTROL SIGNAL TO POWER SEMICONDUCTOR DEVICE FOR SUPPLYING OUTPUT POWER TO FILAMENT LAMP

摘要

PROBLEM TO BE SOLVED: To provide a driving circuit for providing a control signal to a power semiconductor device for supplying power to a filament lamp.;SOLUTION: The driving circuit comprises an oscillator for generating the control signal. The driving circuit may further comprise a soft start circuit 180 which controls the oscillator so as to avoid an excessive current in the lamp at start-up, a voltage compensation circuit which controls the oscillator so as to compensate for variations in load, a shutdown circuit 254 for shutting down and automatically restarting the oscillator in response to a fault condition, an adaptive dead time circuit 78 which controls the oscillator for providing cool running of the power semiconductor device, and/or a dimming circuit which controls the oscillator for driving the lamp. The driving circuit and the control circuit may serve their roles in an integrated circuit.;COPYRIGHT: (C)2008,JPO&INPIT