Do you know why is PD65W fast charger so popular?

Due to the high efficiency of integrated parts, thinness and low office performance requirements for business notebooks, the power of business notebooks is generally low. So why is PD fast charging? The reason is very simple. Although the QC fast charging protocol is open to the outside world, the QC protocol is only used for fast charging of models that support Snapdragon chips. At present, Snapdragon models are mostly mobile phones and tablet devices. In fact, notebooks rarely use Snapdragon chips, and the QC4.0+ protocol supports PD3.0 compatibility, which makes PD fast charging the first choice.

Many business laptops now use the USB type-c interface, and the PD already supports 240W of charging power, but it has not been mass-produced. In fact, it is not difficult to see that the type-c interface has appeared to unify all charging interfaces.

Back to the question just now, why is the 65W fast charge the most popular? At present, the most common chip manufacturers for mobile phones on the market are Apple (A digital series), Qualcomm Snapdragon (Snapdragon), MediaTek (MTK), Kirin (Kirin), and Samsung Orion (Exynos). Only the Qualcomm series of mobile phones that support the PD protocol are left. Manufacturers position their products to be portable for charging mobile phones and laptops, so 65W power has become the most suitable charging power for mobile phones and laptops. When it comes to portable fast charging, I will mention the recently popular GaN chargers.

Characteristics of GaN new semiconductor materials:

1. Has a high forbidden band width and can cover the red, yellow, green, blue, violet and ultraviolet spectral ranges
2. High frequency characteristics, can reach 300GHz (silicon is 10G, gallium arsenide is 80G)
3. High temperature characteristics, work normally at 300°C (very suitable for aerospace, military and other high temperature environments)
4. High electron drift saturation speed, small dielectric constant and good thermal conductivity
5. Acid resistance, alkali resistance, corrosion resistance (can be used in harsh environments)
6. High voltage characteristics (shock resistance, high reliability)
7. High power (high power device)

Due to the high thermal conductivity, low heat generation, high voltage resistance, higher charging efficiency, high integration density and small size of GaN chargers, GaN chargers are 30% smaller than ordinary fast-charging chargers, and their charging efficiency is also 10%~20% smaller than that of ordinary fast-charging chargers. % increase.

If you want to buy a GaN charger but don't know how to choose the right one for you, you can try this 65W GaN A+C gallium nitride charger that I am using now.

Type C fast charger 65W US standard GaN charger 1C1A, PD fast charger Compatible with Samsung Type C Mobile Phone, Tablets, Laptops