SELF OSCILLATING RESONANT CONVERTER BASED LED DRIVER

摘要

A self oscillating resonator (SOR) may be used to control current through light emitting diodes (LEDs). The SOR may be starte d and stopped by a controller coupled to a transistor switch in the SOR. The controller may output a control signal that starts and stops the SOR by coupling a supply voltage or a ground to a base of the transistor switch in the SOR. Additional control over the curre nt output to the LEDs may be gained through a resistive DAC coupled to the SOR and duty cycling the SOR.