Linear LED Driver

Open Model

This example shows a LED driver based on a linear current regulator. The scope shows the light and current output and the supply voltage. The output comes into regulation for a supply voltage greater than about 12V.

Model

Simulation Results from Simscape Logging

The plot below shows the output of the current regulator used in an LED driver circuit. Once the supply voltage reaches 12V, the driver circuit regulates its output.

The plot below shows the driver efficiency and LED current as functions of the supply voltage.