Ron,
In the newer units, like our 2012, it is equipped with a separate inverter and converter. They are both Xantrex. The inverter is a Xantrex PRO Inverter XM 1800. The converter is a Xantrex AC to DC Converter (XADC).
This separate arrangement was a step up for us from our 2008 Tripp-Lite. We use ours just like 2Frazzled, we only turn it on when needed. Works great!!!