In fact, the heating of power adapters and mobile phones is a normal phenomenon, because currently the conversion efficiency of power adapters can only reach about 75-85%. When power adapters convert voltage, a part of the energy is lost, and except for a small part that is lost in the form of waves, the rest is dissipated in the form of heat. Therefore, the greater the power of the power adapter, the more energy is lost, directly leading to an increase in the heat generation of the power adapter.

The housing of a power adapter is generally sealed with heat-resistant and fire-resistant plastic, and the heat inside is conducted and dissipated through the external plastic housing. It is well known that high temperatures can cause short circuits or even fires, so a complete heat dissipation system is now being built. Here is a recommended thermal conductive material - thermal conductive silicone sheet