The demand for low-power, high-voltage isolation transformers has increased dramatically in the last few years as a result of the growth in high power electric mobility systems, energy storage systems, charging stations and industrial automation. Although not part of the main power train, these small, high-density transformers, are crucial in isolating user accessible ports from dangerous high voltage systems and ensuring overall compliance with various global safety standards. Typically, these transformers are converting < 5W of power but are connected to 400V/800V/1.2kV systems requiring isolation in excess of 5kVrms. This seminar will explain and detail several design approaches for maintaining the required agency safety distances (creepage and clearances), review some common pitfalls when dealing with triple insulated Teflon wire (TIW) and fully insulated magnet wire (FIW) as well as explain some of the ramifications of the new IEC61558-1 safety standard as it supersedes the traditional UL60950-1.
Pulse Electronics will introduce multiple new high voltage isolation transformer platforms for use with push-pull, flyback and h-bridge topologies, review the relevant specifications and applications including industrial control boards, solar systems, UPS and electric vehicles.