What does usb pd mean?
The meaning of usb pd charging includes the following 3 points:
1. USB pd charging is USB-Power delivery, which is one of the main fast charging protocols at this stage.
2. usb pd charging improves power engineering transportation through USB cables and RF connectors, expanding the power distribution capabilities of cable system buses in USB applications.
3. The standard transportation efficiency can reach up to 100 watts, and the transmission direction of the power project can be changed arbitrarily.

The relationship between usb pd charging and Type-C charging:
Some people often put USB PD and Type-C together, and even call the Type-C charging head a PD charging head. USB PD and Type-C are actually two different things. USB PD is a fast charging protocol, and Type-C is a new interface specification.
By default, the Type-C socket is set larger, suitable for 5V/3A, but after keeping the USB PD protocol, the power can be made larger, suitable for the above 100W.
Therefore, the USB PD protocol will be suitable for many facilities that are easy to use Type-C sockets.
The development prospect of PD charging
USB PD has now progressed to the USB PD3.0 version number. Under the promotion of Google, USB PD has withdrawn from the QC fast charging protocol of Qualcomm chips, and has been applied by the Ministry of Industry and Information Technology of China. Hope to unify the currently chaotic fast charging and sales market in the near future.