Improvements in AC/DC power supply design are evolutionary, rather than revolutionary. It’s easy to settle for tried-and-tested approaches because no one new design technique is likely to yield great benefits. The design challenge is to establish what small enhancements can be made in various parts of the design to achieve worthwhile improvements in power density, efficiency and EMC performance.
This article looks at some new techniques that have recently been pioneered and tested in commercial power supplies. Many are equally applicable to many in-house custom power supply designs.