So there are a ton of instructables covering the use of high brightness leds. Many of them use the commercially available Buckpuck from Luxdrive. Many of them also use linear regulation circuits that top out at 350 mA because they are highly inefficient. This instructable serves to let people know that there are other options out there to drive high power leds. We came upon this project in the work we are doing with a customer for a high power led strobe [www.ohararp.com/blog.html]
The heart of this project is the STCS1 from STM Electronics:http://www.st.com/stonline/products/literature/ds/13415/stcs1.htm
Warning: Some parts of this project were designed and fabbed using professional software and hardware. However, all aspects of this design could be done using open source products or some perf board and wire wrap.