Power Integrations introduces a power supply design tool for switched mode power supplies (SMPS) built with the company's scalable power conversion integrated circuits. The PC-based software, PI Expert Suite version 5.0, automates the design of flyback, forward converter, and buck topology power supplies. The suite consists of three major components. PI Expert Design Software is an interactive program that takes a designer's power supply specifications and automatically determines the critical components needed to generate an energy efficient switch mode power supply. These include transformer specs, bulk input capacitance, and the selection of the correct Power Integrations' power conversion IC. PIXls Designer offers spreadsheet design support for recently released products. PI Viewer allows the viewing of designs created with previous versions of PI Expert. Enhancements for v 5.0 include an improved user interface, a design wizard that guides the user to the best circuit topology, and the best power integrations device family to fit the power supply requirements.