RESEARCHERS from South China Normal University, Red and Blue Microelectronics, Shenzhen Baseus Technology, Zhejiang University, and Shenzhen University have conducted research on GaN fast charging in the market in the past five years and found a regular trend made up of three elements. First, the output power of commercial GaN fast charging increases by 60 percent every 9 to 12 months. Second, the output power density of commercial GaN fast charging increases by 30 percent every 6 to 9 months. And third, the output power density of commercial GaN fast charging increases by 50 percent every 20 to 24 months. They are calling it 'Lichi Law' because the researchers gathered under a lychee tree on the Shenzhen University campus to discuss these developments. In 2019, the technology of GaN fast-charging products was immature, resulting in a general fast charging power of only 20-30 W in the market, with a relatively large volume. This led to a power density of GaN fast charging generally being below 1 W/cm~3.
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