WEBENCH Visualizer, a comparison and selection tool that allows users to rapidly select an optimal power system design, creates a graphical snapshot of options across multiple criteria such as power efficiency, footprint, and system bill of materials cost. Providing 25 unique switching power supply architectures and 21,000 components, users can navigate through countless power supply design alternatives in seconds. Design criteria can be modified and the real-time effects observed. The tool supports a variety of power supply topologies such as buck, boost, buck-boost, SEPIC, and flyback. Alternative circuit configurations are also available, i.e., fixed-frequency and constant-on-time architectures plus current-mode and voltage-mode control loops. For more details, call NATIONAL SEMICONDUCTOR CORP., Santa Clara, CA. (800) 272-9959.