From the Trek site:
Turbo Charger HP gets you on the bike with the right pressure faster with a piston bore customized for easier high-pressure inflation
The diameter and stroke distance of the pump define its performance; everything is a tradeoff. Pumps that have an easier stroke require more of them, while pumps that push a lot of air each stoke require more effort per stroke. Pumps that support high pressures (e.g. your pump and most road bike specific pumps) tend to be in the former group because once you get above 80-90 psi, the force per stroke becomes considerable.
If you want to inflate faster, look for a pump designed for mountain bikes, but keep in mind that pressures over 80 psi will be a workout.