基于零电流开关准谐振变换器的高频交流LED驱动器系列

A family of dimmable ac light-emitting-diode (LED) drivers fed from dc voltages, is presented in this paper based on zero-current-switching quasi-resonant converters. The proposed family of drivers is based on replacing the diode in the conventional converter topologies (i.e., buck, boost, or buck-boost) by a string of high-brightness LEDs (HB-LEDs). Hence, the HB-LED string will be working as the...