A Current Controlled Isolated Integrated AC/DC LED Driver

This paper proposes the application of the boost integrated two-switch forward converter in current control mode for LED applications. Automatic power factor correction at the input is obtained with discontinuous mode (DCM) boost converter. The two-switch topology of forward converter reduces the switch voltage stresses compared to conventional forward topology. Also, transformer saturation is eliminated with reset diodes without the use of separate circuitry. The isolated integrated ac/dc LED driver circuit is simulated in matlab/Simulink software and obtained the results. The dimming capability of the driver is also observed.