METHOD AND APPARATUS FOR ENHANCING POWER USAGE EFFICIENCY IN THE HIGH LUMINENCE LED LIGHTING SYSTEM

摘要

PURPOSE: A method and a device thereof are provided to reduce manufacturing costs by reducing an external component which comprises a high intensity LED lighting system. CONSTITUTION: A high intensity LED part(110) includes a plurality of high intensity LEDs. An LED driving part(70) controls a driving current in order to drive the high intensity LED. A voltage sensing part(30) generates a voltage error value by sensing errors regarding the total sum of the forward drop voltage of the high intensity LED. A voltage control part(20) generates a command to the high intensity LED part in order supply a correction voltage which corrects the voltage error value. A voltage generating part(10) supplies the correction voltage, which is converted into a driving current according to the command from the voltage control part, to the LED driving part.