Sustainability of switching power supplies

[Ralf Mardorf]

Hi,

does anybody know about papers related to the sustainability of
switching power supplies?

In my very limited experiences they are seemingly less sustainable than
old school power supplies.

I'm curious, if any paper does exist related to energy efficiency of
usage of a power supply, but also taking into account how much energy
is needed to repair or replace those switching thingies and classic
stone age power supplies. And apart from energy efficiency, how much
other resources are required to produce and maintain different kinds of
power supplies?

My experiences with modern computer power supplies aren't bad, but
my impression about switching power supplies in almost everything and
the sustainability of this approach ... voltage undersized caps etc.
isn't good.

Regards,
Ralf