Several switching-converter topologies exist for power converters that operate from the ac mains and must maintain a power factor of 0.9 or better. One topology is a boost converter with a control ...

Buck-boost converter topologies fit into a wide range of applications. Whether you are charging a battery from a battery, powering a string of LEDs, or running a handheld device from a single cell, ...

For low-power devices powered by alkaline or lithium primary batteries, every microampere of current becomes critical for extending battery life and increasing the time between battery replacements.