A power supply has long since ceased to be just the classic power supply with mains cable on one side and low voltage on the other. AC/DC & DC/DC converters can also perform this task directly, but can also generate other operating voltages internally or provide galvanic isolation. Distributed power architectures thus make development faster and more flexible and improve the quality of the supply at the point of load.
Its Effects on DC-DC Converter Performance and Characteristics
A modern DC/DC converter typically has a negative input resistance. This can lead to instability if the wrong circuit is used. This whitepaper explains how this negative input resistance arises and how stability can be guaranteed.