Laptops, tablets, smartphones, wireless earphones, smart watches… As more and more devices need to be charged on your desk, the power strip at your feet is filled with factory adapters and your wiring becomes spaghetti. The GaN (Gallium Nitride) charger, which uses a new generation of semiconductor material, solves this problem once and for all. By appropriately introducing a GaN charger that achieves high efficiency, low heat generation, and ultra-compact size, you can smartly centralize power supply for the entire desk with a single device that fits in the palm of your hand. In this article, we will thoroughly explain output selection and placement techniques that won’t fail.
Common traps: Mechanisms of “single maximum output” and “automatic distribution when connected simultaneously”
When choosing a GaN charger, you may regret purchasing if you only look at the maximum 100W'' number on the package. What is important is "output distribution when multiple ports are used simultaneously." For example, in the case of a 100W 3-port charger, even if 1 port can output 100W, the distribution will be finely restricted such as 65W + 30W’’ when using 2 ports and 65W + 18W + 18W'' when using 3 ports. If you want to quickly charge your smartphone while powering your laptop, you need to choose a spec that allows the main port to maintain at least 65W. Also, be sure to understand the behavior of momentary power outage (power renegotiation),’’ where charging is interrupted momentarily every time you connect a new device. For devices that are vulnerable to instantaneous power outages, such as those connected to external monitors, models with independent power supply ports provide peace of mind.
Recommended number of W for each device and how to choose it
- Lightworker (smartphone + earphones + mobile laptop): Total 65W
67W class (23 ports). Extremely compact and easy to carry. - Standard (MacBook Pro 14 inch + iPad + smartphone): Total 100W class (3 to 4 ports). While stably supplying 65W or more to your PC, you can also charge peripheral devices at high speed.
- Heavy User/Creator (High Performance Workstation + Dual Power Supply): Total 140W to 200W class (4 ports or more). A high-end model compatible with the latest USB PD 3.1 (maximum 240W) will come into view.
Desk arrangement technique: stationary type vs. wall plug type
There are two main types of GaN chargers: direct plug-in type'' and desktop type with glasses cable.’'
Types that plug directly into a wall or power strip are convenient to carry, but if you frequently plug and unplug the cable on your desk, the charger itself will be pulled and fall out, causing stress. If you want to permanently set up your desk environment, we overwhelmingly recommend a tabletop type that allows you to place the charger on your desk. By fixing it to the back of the desk top with double-sided tape or placing it next to the monitor stand, you will have an ideal charging station that can be easily attached and detached at your fingertips. Also, don’t forget to get a “100W compatible USB-C cable” with a built-in E-Marker chip to take advantage of the high output of 100W or more.
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