PLECS: Two Stage LED Driver

This demonstration shows the design of a two-stage LED driver circuit consisting of a boost-PFC for AC/DC conversion followed by a flyback converter for DC/DC conversion. The first stage provides a near unity power factor and a low total harmonic distortion (THD), while the second DC/DC stage is used to provide a tight regulation of the output. The controllers in both these cases have been tuned analytically using the K-factor method. The LED load is represented by a non-linear V-I curve obtained from the forward current characteristic curve of an actual device.

Tags: #Controls, #Power-Supplies