Abstract
The lifetime of traditional light-emitting diode (LED) drivers is mainly affected by electrolytic capacitor. Therefore, a single-stage isolated electrolytic capacitor-less LED driver is proposed, with which the electrolytic capacitor is eliminated and the output current ripple is reduced. Firstly, the operation principle and switching mode of the topology are analyzed. Then, the feasibility of the topology is analyzed by using the state space average method. Finally, an experimental prototype of 60 W output power is built to verify the correctness of the scheme.
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