“Switchers Made Simple” is a switching regulator design software that”s used within the online WEBENCH power supply design environment, and is also available as a downloadable tool. For additional electrical and thermal analysis tools and access to customized evaluation boards, as well as recommendations for newer products, check out WEBENCH online. Switchers Made Simple v6.24, and supports the following Buck, Boost, and Flyback SIMPLE SWITCHER converters: — Buck topology: LM259x and LM259xHV, LM267x — Boost/Flyback topologies: LM2698, LM258x, LM2577 SMS6.24 functionally combines the calculation tools of the earlier Switchers Made Simple v4.3 and LM267x Made Simple v2.01 with the “Solution Selector” tool originally developed for online use in WEBENCH. Released 12/6/01, Version 6.24 includes all the features and solutions of v6.1, plus LM259xHV and LM2698 designs, reduced download size and an improved install procedure. The software can be downloaded from National”s Switchers Made S
The latest standalone version I could find is ver. 6.3.1 found here – http://web.archive.org/web/20071011022813/http://www.national.com/appinfo/power/0,1768,383,00.html