100-watt MATLAB/Simulink Model LED Based Light Source for Medical Endoscopy

This work is a step forward to develop, design and manufacturing of 100-watt enoscopic LED light sources for the sponsor of this work endoscopic German manufacturer and supplier “Ingenious Medical”. The Greek prefix “endo” means “within, inside”. Endoscopes are scopes to view inside. More precisely, medical endoscopes are devices used to view internal human body organs and cavities to diagnose or perform a surgery. This needs optimum control of light intensity to provide comfortable surgeon's view during surgery. There are three major categories of light sources used in endoscopy: LED, halogen and xenon. Based on its benefits, LED light sources dominate in surgical theatres. In our work, 100-watt endoscopic LED light source MATLAB/Simulink model has been developed and tested virtually. Our 100-watt LED power supplier and controller MATLAB/Simulink model consists of: AC-DC medical SMPS converter with an input “AC – 220V/0.45A” & an output “DC – 12V/8.3A”, DC-DC buck converter with an input “DC – 12V/8.3A” & an output “DC – 3.6V/1-28A”, voltage and current control units (LED's light intensity regulator), thermally controlled silent Fan (LED's thermal management), and 100-watt LED. The model has been simulated and the results are recorded. The role behind the simulation of this model is to develop a real physical 100-watt LED light source with optimum design and best control for the German Ingenious Medical Company. Based on the simulation's results, the second step will be the application of learned experience to make real electronic boards to start the long process of manufacturing. Thus, this work stresses the importance of computational model in the design and manufacturing process of safe and reliable medical devices.