The demand for smaller, lighter, and more efficient AC/DC USB power delivery (PD) chargers is always a challenge for power-supply design engineers. Below 100 W, the quasi-resonant flyback is still the ...

USB PD 3.1 incorporates additional voltage levels: 28V, 36V, and 48V – alongside adjustable voltage supply (AVS) capabilities. The company says the transformer designs specifically accommodate these ...

The harnessing of electricity has played a pivotal role in human history and has exponentially expedited our growth as a species. Since becoming a household commodity in the late 19th century, ...