Research on electro-thermal coupling simulation platform of switching mode power supply

With miniaturization development of switching mode power supply, electro-thermal interaction inside the power supply cannot be ignored. Realization of electro-thermal coupling simulation involves multiple software interfaces and automatic calling. There is a lack of usable integrated software platform at present, which has restricted application of electro-thermal coupling in switching mode power supply simulation analysis and optimization. This paper studies electro-thermal coupling simulation technology of switching mode power supply via the relaxation method. Based on this, it sets up an electro-thermal coupling simulation software platform of switching mode power supply through secondary development of Isight. Moreover, by taking a light-emitting diode (LED) driver as an example, simulation analysis and optimization are conducted by utilizing the established platform.