Application Note AN4137Design Guidelines for Off-line Flyback Converters Using FPSAbstractThis paper presents practical design guidelines for offline flyback converter employing FPS (Fairchild Power Switch). Switched mode power supply (SMPS) design is inherently time consuming job requiring many trade-offs and iteration with a large number of design variables. The step-by-step design procedure described in this paper helps the engineers to design SMPS easily. In order to make the design process more efficient, a software design tool, FPS design assistant that contains all the equations described in this paper is also provided.Bridge rectifier diode C DCDR2LP2VDC + -RsnC snVsn +NpNS2CO2CP2V O2DsnFPSDR1Drain 1 Vcc3LP1CL2NS1Ra D……