Power supply optimization for new technology adaptable televisions

The concept of low profile power supply became a current issue because of the recent trends in LCD/LED TV consumer market. Realizing a low profile power supply with high power density is a challenging work due to the size limitation of passive components. While preparing this study, power supplies belong to different brands in the TV market, are examined and by using the resuls of this examination, the parameters which shape the desing such as topology, component, thermal performance, component placement, power supply dimension, input/output power are revealed. From the results, LLC, PFC and flyback converter structures are realized as the main component of a power supply and 10mm height limit is discovered as commonly used lower limit of the power supplies. Based on the abovementioned outcomes, realizing the needed parameters for the optimization of a power supply is the main purpose of this study. In this study, a very low profile power supply implemented by considering the criteria of 10mm component height limit without any drop-in cuts on the surface of printed circuit board. In the design stage, the simulation model of the converters used in the power supply are applied to SPICE tool in order to estimate the performance of the converters and borders of the passive components. On the basis of theoretical approach and simulation results, a power supply with 34% increased power density is implemented. In addition, this optimization is performed by considering the critical parameters of the power supply such as board surface area, temperature limit, stand by power consumption etc.