LED LIGHTING DRIVE CIRCUIT AND METHOD FOR COMPENSATING CURRENT ERROR BETWEEN A ROWS THEREOF

摘要

PURPOSE: An LED driving circuit and a method for compensating current errors are provided to improve reliability of an LED lamp by compensating, controlling, and sensing the current errors. CONSTITUTION: A half-bridge inverter(10) converts input DC power into AC power. A first transformer(20) outputs the boosted or dropped AC power after the AC power is boosted or dropped. An electric wave rectifying unit(30) full wave-rectifies the AC power. An LED unit(40) includes a plurality of LEDs which are connected in parallel to be turned on with the DC power. A second transformer(50) transforms the supplied current into the voltage and outputs the sensed voltage. A feedback unit(60) compares the sensed voltage with a reference voltage and outputs the comparison result signal.