For example, this datasheet refers to a 'freewheeling' diode and a 'boost' diode. The upper diode is the freewheeling diode, right?
If you wanted to switch an inductive load with a single such module, the upper diode would act as the flyback (freewheeling?) diode in parallel with your inductance, and the anti-parallel diode would not be doing much.
I'm curious because I recently saw a failure analysis report of an IGBT module in which the the terms 'freewheeling' and 'flyback' we use -not- interchangeably. I've also seen the term 'body diode' used for the anti-parallel diode.
Are these terms contextual? Is there a preferred name for the lower diode?