From the horse’s mouth
A significant trend over the last few years is to see the use of gallium nitride as the new electronics semiconductor. It is being seen as the “new silicon” – a new highly-impressive highly-capable semiconductor material that opens up new doors.
At the moment, the application that impresses is highly-compact highly-efficient power supply circuits. Here, such power supplies run very cool and a USB-C PD “wall-wart” AC charger based on this technology occupies the same space on a power outlet as an ordinary AC plug yet able to yield at least 30 watts.That is due to it wasting less energy as heat therefore not needing much in the way of cooling space.
Belkin, a household name associated with computer accessories, has now joined the party with their own gallium-nitride-based USB-C Power Delivery wall chargers.
One of these can support a 30-watt load which would answer use cases like smartphones or tablets. The other is a 68-watt unit that has two USB-C outlets and a dynamic load-balancing circuit. This can mean that one of the outlets can be used to power something like a Dell XPS 13 Ultrabook while the other is used to charge that smartphone or battery pack.
The idea of combining USB-C PD and the GaN power-supply technology is appealing towards having these devices that can work with laptops, smartphones and tablets yet not take up much room on that powerboard.
What Belkin and other respected accessory vendors need to work on are multi-outlet USB-C PD charging stations that can support at least two or three USB-C PD devices with a draw of at least 45 watts each. This would be important for situations where multiple tablets or ultraportable laptops are likely to be used in the same space.