The 45W PD charger manufacturer tells you that the PD charger is a power adapter with PD protocol. The pd protocol is a protocol for fast charging, which requires the charging power to comply with the standards proposed by the USB standardization organization, which is very common in fast charging technology.

There are usually two protocols for fast charging, namely QC protocol and PD protocol. 45W PD charger manufacturers tell you that because major manufacturers have different requirements for charging efficiency during design, they need a unified specification to limit them, so pd Protocols and QC protocols follow.
The 45W PD charger manufacturer tells you that the charger (charger) is divided according to the working frequency of the designed circuit, which can be divided into power frequency machine and high frequency machine. The 45W PD charger manufacturer tells you that the power frequency machine is designed based on the traditional analog circuit principle. The internal power components of the machine (such as transformers, inductors, capacitors, etc.) are large, and generally there is less noise when running with a large load, but This model has strong resistance performance in harsh power grid environmental conditions, and its reliability and stability are stronger than those of high-frequency machines.