Design of Single-ended Flyback Transformers in the Switching Power Supply

Transformer is the core of the switching power supply device.In the design of flyback transformers that work in the current continuous and current discontinuous mode,there are many difficult issues,such as many formula and parameters.This paper carefully analyzes various factors,including the core size,the original edge inductance value,air-gap size,the original edge of the coil turns,and the diameter of the coupling winding around the law and other issues.And then we provide a concrete method and the detailed procedures about the design of flyback transformers.By means of practical examples,it can be seen that this method can rapid design a flyback transformer that we need.