The main function of the power module is voltage conversion, which can convert AC or DC power into the AC or DC power you want. For example, converting 220V AC power from the mains to 5V DC power requires a conversion device to convert the voltage of 220V AC into low voltage, as 220V AC power is high voltage while electronic products are powered by low voltage.
Simply put, it is similar to a power adapter. Your electronic product needs to be plugged in to function properly, but you cannot directly connect it to 220V for use as it may cause the product to burn out. Therefore, a specialized conversion device is needed.
With the development of the electronics industry, there is a demand for smaller and more reliable power supplies. With the advancement of high-frequency soft switching technology, semiconductor processes, and packaging technology, the power density of power modules is increasing, the conversion efficiency is also improving, and their applications are becoming simpler.
