High-power LED driver

摘要: The invention discloses a high-power LED driver comprising boost-buck switching converter which takes first pole terminal and second of an inductor as output ends, current detector for detecting value the in controller receiving signal detector. A cycle control circuit is arranged to maintain within certain threshold; comprises power switch tube connected between ground terminal; respectively controlling turn on off. Compared with traditional driver, reduces element can provide stable achieve higher dimming ratio than structure by being matched corresponding strategy.