摘要：高頻變壓器的設計是單端反激式開關電源設計的核心。如果在單端反激式開關電源中高頻變壓器的設計初步完成以后，不對高頻變壓器進行電路的仿真而是直接進行制作和實驗調試，盡管最終可以得到實驗所要求的各項性能指標，但是可能會花費大量的費用和時間。本文采用PExprt軟件對單端反激式開關電源中高頻變壓器建立模型并運用PSPICE軟件進行仿真，仿真結果表明本方法是可行的。 敘詞：高頻變壓器 PExprt PSPICE 仿真測試 Abstract：The key in the design of the switching power supply of single-ended fly-back is the design of high-frequency transformer. After completing preliminary design of switching power supply of single-ended Fly-back, if we plat and debug directly instead of going on simulating at first, although we can reach all the performance indices of the test, it will cost much more funds and time. This paper adopts PExprt software in modeling high-frequency transformer of the switching power supply of single-ended Fly-back, and PSPICE software in simulation. The results of simulation prove that the method is available. Keyword：High frequency transformer, PExprt, PSPICE, Simulative test