A high-quality power adapter, from its development and design all the way through to its use after leaving the factory, must not only take into account aesthetic appearance but also ensure the rationality of its switching power supply’s internal structure. During operation, it’s crucial to closely monitor the temperature rise range to prevent overheating, which could otherwise reduce the efficiency of the switching power adapter. In the course of using a switching power adapter, excessive temperature in the power product is typically caused by two main factors: first, the MOSFET, and second, design issues inherent in the power adapter itself. Today, let’s explore together how to address the problem of excessive temperature in switching power adapters.

First, let’s take a look at MOSFETs. Generally, switching losses are caused by the magnitude of individual charge carriers and the switching time. We can reduce these losses in switching power adapters during operation by using electronic components with faster speeds and shorter recovery times.

As for the issue of on-state losses, we can reduce these losses by using switches with low on-state resistance. Of course, a better design can also further minimize losses—this depends on the skill level of the designer and engineer. During the adapter design process, the MOSFET experiences the most severe heating, precisely because its power losses are the highest. These MOSFET power losses mainly stem from two sources: one is the on-state loss, and the other is the switching loss.

Power adapter

The Dajing power supply features intelligent recognition and multi-layered protection, offering nine-fold circuit safety protections to ensure a worry-free charging experience throughout the entire process. Equipped with smart control chips and charge/discharge chips, it not only safeguards the power supply itself but also provides tailored protection based on the connected device. The chips come with comprehensive protective functions, including overvoltage and overload protection. Only high-quality power supply chips can extend the lifespan of the device. Featuring dual MOS power devices and leveraging resonant principles, this design minimizes power loss and maximizes efficiency. High-capacity MOSFETs guarantee maximum peak performance. With 18 years of dedicated expertise in power supply manufacturing and independent R&D capabilities, Dajing Power Supply offers customized power solutions tailored specifically to your needs.