I've been perusing some of the ways that I can drive higher current and
voltage (automotive) things such as lights, and the multi-channel
high-side/low-side switches (from Infineon) seem to fit the bill. I've
fooled around with them and they do work for what I'm doing, but I'd like to
add the theory to my practice.

However, my confusion is to what's the general difference between the
high-side and a low-side designations. It's obvious from the spec sheets
that there's a bunch more current running through the high-side switches. Is
there more? Same thing applies to other companies designation of a
high-side/low-side driver (I'm assuming they're similar to Infineon's
switches).

Bummer that my Art of Electronics book doesn't have a reference to them... I
guess I'm a dazed software guy in hardware hell...

-DO