GaN fast charging and PD fast charging are different concepts!
GaN →Gallium Nitride is a third-generation new semiconductor material, which has the characteristics of large forbidden band width, high thermal conductivity, high temperature resistance, radiation resistance, acid and alkali resistance, high strength and high hardness. It was widely used in new energy vehicles, Rail transit, smart grid, semiconductor lighting, and new generation mobile communications are known as the third generation of semiconductor materials. As the cost of technological breakthroughs is controlled, gallium nitride is currently widely used in consumer electronics and other fields, and chargers are one of them. Simply put, GaN has a wider band gap. The wide band gap also means that GaN can withstand higher voltages than silicon and has better conductivity. In the same volume, GaN technology is used for charging. The output efficiency of the charger is higher than that of ordinary chargers. For example, a charging head made of gallium nitride material can achieve more output power when it is about the same size as an Apple 5W charger. From the above we know that gallium nitride is a kind of material, it has nothing to do with the agreement, the current industry development fast charging trend is PD chargers, so most of them will be applied to PD chargers. Using gallium nitride MOS tube chargers, the switching frequency can be increased, and the product volume can be reduced by 30~60% (single-port output) and weight by 20~40% compared with traditional silicon MOS tube chargers. In addition to fast charging heads, where else is GaN used? There are three more important directions: ➦The field of optoelectronics: like common LED, lidar and VCSEL sensors; ➦Power field: common power devices such as fast charging heads and inverters; ➦RF field: 5G base stations, radars, low-orbit satellites, etc.
Are GaN chargers more expensive than other ordinary chargers? Compared with ordinary chargers, the R&D/manufacturing cost of GaN chargers is much higher, and the price will naturally be higher than that of ordinary chargers. For example, single-port GaN chargers and multi-port GaN chargers also have different prices due to different costs. What is PD fast charge? The PD protocol is a safe charging standard formulated by the International USB-IF Organization Association. As a member of this association, Apple's original PD Charger also follows this standard. Apple has supported PD fast since the iPhone 8 series models released in 2017. iPhone8-iPhone11 series models support PD18W fast charging, and use with PD18W and above charger + USB-C to Lightning Apple fast charging data cable to achieve fast charging effect, and can charge up to 50% in 30 minutes; iPhone12 series models support PD20W fast charging, and use it with PD20W and above charger + USB-C to Lightning Apple fast charging data cable to achieve fast charging effect, and it can charge up to 60% in 30 minutes. Of course, the devices that use the PD fast charge protocol are not only Apple's iPhone, iPad Pro, MacBook, Samsung's Galaxy S20 series, etc., but also Huawei, Honor, Contact and other brand laptops. At present, the common mobile phone fast charging agreements on the market are as follows Such as QC2.0/3.0/4.0, SCP, AFC, PD, Dash Charge, VOOC flash charging, dual-engine flash charging, etc. Anyway! When buying a charger for a mobile phone/tablet/laptop, just check in according to the fast charging protocol and power supported by the device! Anyway, the condition of fast charging = device + charger + data line all support the same fast charging protocol and power. Note: The power of the charger is backward compatible. For example, using PD30W/45W/65W can charge iPhone12 that only supports PD20W, because the charger will intelligently identify the current drop required by the device, so you don`t need to worry about it~
