New Dynamic Photo-Electro-Thermal Modeling of Light-Emitting Diodes With Phosphor Coating as Light Converter—Part II: Model Parameter Determination and Practical Verification

Based on the dynamic photo-electro-thermal (PET) theory for light-emitting diode (LED) systems, a comprehensive theory for analyzing and modeling the phosphor coating in white LEDs as a dynamic light converter has been presented in Part I of this paper. Part II of this paper provides the details of the model parameter determination, model setup, and experimental verification. The procedures of obtaining the parameters in the experimental setup are explained. Using the comprehensive theory, a dynamic PET computer model of a phosphor-coated LED device has been developed. The simulation results compare well with the practical measurements, confirming the validity of the comprehensive theory in Part I of this paper. The new model provides the novel equations for new information such as the power loss in phosphor coating and transients of the light emitted from the phosphor coating. Such information can be used for the designs of LED drivers and systems.