ILLUMINATION DRIVING APPARATUS

摘要

PURPOSE: An illumination driving device is provided to drive a light emitting device for a user request by allowing AC power to accurately detect dimming intensity. CONSTITUTION: A triac dimmer(500) controls the phase of a waveform by receiving commercial AC power. A rectifier(100) rectifies the AC waveform controlled in the triac dimmer. A DC/DC converter(600) converts an output of the rectifier into a constant voltage level. A light emitting diode(700) is operated by receiving the output controlled in the DC/DC converter. A feedback voltage part(800) generates a feedback voltage from the output voltage of the DC/DC converter. [Reference numerals] (100) Rectifier; (200) Comparator; (300) Reference voltage generator; (400) PWM signal generator; (500) Triac dimmer