3 страницы.
Статья по применению продукции APD Semiconductor.
Application Note AN-1005.
With the growing demand for portability today, power supply designers are forced to develop external power supplies that are smaller, lighter and more efficient than ever before. This growing trend is leading designers to look for new solutions on how to produce effective designs that can fit in the palm of your hand and not burn it at the same time. With aesthetics driving smaller casing to fit these power supplies into, dissipating heat has become an overwhelming issue in advanced designs. Simply put, the smaller the power supply, the higher the temperature it will operate at. The large amount of heat that is produced not only creates a problem with the UL 1012 safety standard, but it also severely lowers the lifetime reliability of the power supply itself. The main source of reliability problems in power supplies can be attributed to the failure of the output rectifiers. More so, the essential factor on how reliable and efficient the power supply will run in these smaller casing will depend on how well the output rectifiers perform under these high temperature conditions. Hence, the purpose of this paper.