The small supply voltage of Ultra-Low-Power CMOS will also have an impact on the
power supply techniques.
On the one hand, low
allows to utilize low-voltage energy sources
such as batteries and solar cells more efficiently. On the other hand,
the low voltage makes it more difficult to deliver a given amount of
power to a chip. In addition, the power per chip area will not likely decrease,
especially, in high-performance systems
which are power-limited
[4].
In the following, some of the prospects, problems, and potential
solutions are discussed.