The LinkSwitch - HP family is a highly integrated monolithic switcher IC designed for off - line power supplies. The Output regulation is achieved using primary - side sense regulation (PSR) that gives accurate Output regulation for designs of up to 90 W / 117 W.

This application note is intended for engineers designing an isolated AC - DC flyback power supply using LinkSwitch - HP devices. It provides guidelines to enable an engineer to quickly select the key components and also complete a suitable transformer design.