THERMAL MANAGEMENT OF A PLANAR MAGNETIC MICRO-TRANSFORMER

摘要

This paper reports a numerical and experimental study ofrnmicro-transformer thermal behavior in a cell-phonerncharger. A detailed thermal analysis of the charger hasrnbeen presented. In the end some thermal solutions forrnspreading the hot spot temperature have been outlined. Itrnis shown that this thermal solution strategy can reduce therntouch temperature by 13 C at high line. Based on thermalrnsimulation some heat sinking approaches have beenrnproposed which drastically reduced the transformerrntemperature.