PCB is bare printed circuit board without components. PCBA is after STM and DIP processing on the basis of PCB.
A conventional charger has an output of 5 to 10 watts. A faster charger can improve that by up to eight times. For example, the iPhone 11 Pro and Pro Max come with an 18-watt fast charger.
Both PD 3.0 and QC 3.0 will charge your battery faster than traditional USB.
which is faster, PD 3.0 or QC 3.0? It depends on your device. To begin with, there’s a difference between Android and Apple products. With Android, you’re dealing with an open standard, so your mileage may vary. Most newer Android phones support PD charging, and more than half also support QC 3.0. Keep in mind, though, that this will depend on your phone’s manufacturer.