In order to suppress the temperature increase of the power adapter, in addition to selecting a power MOS tube with small leakage current and short storage time, it is also necessary to install a heat sink for the power MOS tube. After the MOS tube is equipped with a radiator, the stability of the power adapter will be greatly improved and the loss rate will be greatly reduced. The function of the electronic switch overheating protection measure is to cut off the AC input line of the power adapter, or forcibly turn off the modulation pulse output, and stop high-frequency oscillation before the temperature of components prone to heat rises. The power adapter or power cabinet exceeds the specified limit.

        If the power adapter has IC-controlled driver overheating protection, there is no need to add any external components, or only a few external components can be added to prevent overheating. Since the power adapter controls the driver IC, a PN junction temperature sensor is built-in, including a thermal shutdown circuit. PN junction temperature sensors have built-in driver ICs connected to the sensor. Thermal shutdown circuit and overheat protection of the driver IC become very simple. The cost of the integrated circuit itself is very low, and the cost performance is very high.

        The power adapter uses low voltage drop and low loss switching components, and the heat dissipation area should be as large as possible. Switching power supplies above 100W usually have perforated metal casings or cooling fans. Try to place the power adapter in a place with good ventilation and heat dissipation. Do not place books or other objects on the power supply.