100VDC to 13.5VDC simple switcher

i want to build a dc-dc converter that will handle higher input voltages
than the common 72v limit of modules or the 60v limit of the "simple
switcher" line. i would prefer not to need a preregulator stage, so what i
really want is an LM2576HV that would work with an input range of 30v-100v
and provide 13.5VDC @1-2A. I would much prefer a boost converter topology
using a torroid over a transformer i have to wind. any ideas? and thanks
in advance.

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