AN4105 - Fairchild Semiconductor

AN4105 Design Considerations

www.DataSheet4U.com www.fairchildsemi.com Application Note AN4105 Design Considerations for Switched Mode Power Supplies Using A Fairchild Power Switch (FPS) in a Flyback Converter Introduction Flyback switched mode power supplies (SMPS) are among the most frequently used power circuits in household and consumer electronics. The basic function of an SMPS .

Features

se width modulation (PWM) based control IC in one package. Moreover, they provide enhanced IC functionality, thereby minimizing the number of additional components needed in an SMPS. Fairchild Power Switch (SPS) ICs are widely used in the power circuits of a variety of equipment, such as color TVs, printers, PCs, monitors, battery chargers and ac adapters. They typically incorporate a variety of enhanced protection functions and they permit a much reduced power consumption in standby modes. This application note considers the three major functional blocks of an SMPS: Fairchild Power Switch (SP.