The thesis deals with the development of tester for testing functions of automotive LED lamps.
At the beginning there are presented requirements and causes of LED lamps testing. In the second part we find out what LED lamp actually is. There is a short description of development over the time, estimations about the development in the future and actual trends in automotive industry. An exploded 3-D view gives us an explanation of some main part of the modern LED lamp. Continuing with the types of power supplying found in LED lamps nowadays, basic topologies and characteristics of DC-DC switching converters.
The structure of the tester is shown in the main part with a block diagram and end goals about the device functionality, followed by descriptions of LED driver, PCB which was used and operation of Ćuk converter. The output current of converter is regulated. For this cause measuring circuit board was made with amplifier and appropriate filter, which distributes the signal to the control unit. The operation of converter is controlled by development board STM32F429, with build in LCD screen, which allows different options of brightness.
In the last part there is a description of individual parts of end product and its functionality.