Efficiency should be a major consideration when designing a flyback switching power supply. It can impact many aspects of a product design, from enclosure size and ventilation to safety qualification. Many design choices affect the efficiency of a given power supply design, including such seemingly disparate factors as the value of the bulk storage capacitor, transformer core geometry and construction, choice of output rectifier, and snubber and clipper networks. This application note will concentrate on efficiency comparisons between TOPSwitch and conventional power supply designs, efficiency measurement techniques, and general design considerations for constructing efficient flyback power supplies using TOPSwitch. For a more detailed treatment of flyback power supply and transformer design refer to application notes AN-16, AN-17 and AN-18. TOPSwitch Flyback Power Supply Efficiency Application Note AN-19 Introduction and conventional power supply designs, efficiency measurement techniques, and general design considerations for constructing Efficiency should be a major consideration when designing a efficient flyback power supplies using TOPSwitch. For a more flyback switching power supply. It can impact many aspects of detailed treatment of flyback power supply and transformer a pr……