Most USB chargers cram a lot of electronics into a mighty small volume, and are built to a price point, meaning that something has to give in the design ... to switch-mode power supply designs ...

Combining a buck-boost topology and Silent Switcher technology brings very low EMI at the highest power-conversion efficiency ...

The common type of power supply used with computers and other electronic equipment. The "switching" comes from switching a transistor on and off to create square waves for input to a transformer.

While he was fortunate enough that someone labeled it as having a bad power supply, things aren’t always that easy. He gives a broad explanation as to how switched mode power supplies work as ...