There looks to be more BOM cost given to PSU functions than anything else, after the CPU. Of course the PSU earns its keep by getting max battery life from this CPU/display/memory but switchers are also a source of EMI, control of which adds more components.
I look forward to wide-range 200MHz converters with built-in L and C, sold in such huge qties that the cost is negligible, like the old 78xx series.
Replay available now: A handful of emerging network technologies are competing to be the preferred wide-area connection for the Internet of Things. All claim lower costs and power use than cellular but none have wide deployment yet. Listen in as proponents of leading contenders make their case to be the metro or national IoT network of the future. Rick Merritt, EE Times Silicon Valley Bureau Chief, moderators this discussion. Join in and ask his guests questions.