http://www.maxim-ic.com/appnotes.cfm/appnote_number/710/ln/en
What I've been playing around with is very similar to the way these systems operate.
The big difference is that they're powering HV ignition coils, while I'm powering a 1:1 transformer. The switching methodology is virtually identical. Pay close attention to the requirements they list for a switching transistor.
http://ourworld.compuserve.com/homepages/JET_AV8R/Vision/Ignition/CDI.HTML