High-precision constant current controller for primary-side feedback LED drivers

@article{Wang2013HighprecisionCC,
  title={High-precision constant current controller for primary-side feedback LED drivers},
  author={Yulin Wang and Junmin Jiang and Lenian He},
  journal={2013 IEEE International Symposium on Industrial Electronics},
  year={2013},
  pages={1-5}
}
This paper presents a novel constant current LED controller with primary-side feedback control method for flyback topology. The method is proposed based on sampling input peak current and secondary-side electric information detected by an extra auxiliary winding. Eliminating opto-isolator, the controller can still regulated the output current precisely by designing special sample circuit and compensating signal propagation delay. A prototype with 7 LEDs has been built to verify the control… CONTINUE READING
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Priamry Side Control Circuit of a Flyback Converter for HBLED

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Primary-Side Control Scheme for High-Power-Factor LED Driver With TRIAC Dimming Capacity

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