A primary side feedforward control scheme for low power LED driver compatible with Triac dimmer

@article{Jiang2012APS,
  title={A primary side feedforward control scheme for low power LED driver compatible with Triac dimmer},
  author={Ting Jiang and Hulong Zeng and Junming Zhang and Zhaoming Qian},
  journal={2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC)},
  year={2012},
  pages={963-968}
}
This paper proposes a primary side feedforward control scheme for low power Triac dimmable LED driver. The LED driver is based on the Flyback topology operated in constant frequency (CF) DCM mode. The input power is controlled by the proposed control scheme based on the Triac dimming angle, which is not affected by the AC input voltage variation. Therefore the output power and current can be regulated without any isolated feedback circuit. Also, the input current automatically follows the input… CONTINUE READING