A dual-path, current-sensing resistor-free boost LED driver with fast PWM dimming

• Published in: 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC) pp. 848 - 853
• Main Authors: Minchao Zhou, Lin Cheng, Danzhu Lv, Zhiliang Hong, Liu, Bill Yang
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.03.2013
• Subjects: Current measurement; Light emitting diodes; Mirrors; Pulse width modulation; Switches; Voltage control

A boost LED driver features high PWM dimming ratio and optimized efficiency is presented. This LED driver, which having low dropout voltage and is able to drive 3~7 LEDs in series with constant output current and fast PWM dimming, is alternative for brightness adjustment. A dual-path control scheme...