The service life of a power adapter mainly depends on the service life of electronic components, and any faulty component will affect the normal use of the power adapter. Let's follow the manufacturer to learn more!

1. Chip IC

The chip does not have a core component in the power supply. It is recommended to choose a first tier brand to ensure a balance between performance, process, and cost. We generally choose to use AC-DC power adapter chips made by Anbao, Silijie, and Xinpeng Microelectronics

2. Electrolytic capacitors

Electrolytic capacitors are temperature sensitive devices in power adapter devices. From this perspective, the quality of electrolytic capacitors also determines the lifespan of power devices to a certain extent. AC-DC power adapter products have outstanding performance

3. Primary switching transistor (MOS transistor)

This type of switching device is in a high-speed switching state and is subjected to high voltage and current stresses. The heating caused by switching losses can also accelerate the aging of the device, and it is also susceptible to external high-voltage interference and breakdown damage

4. High frequency power transformer

High frequency transformers generate heat due to internal losses during energy transmission, and the heat emitted can also affect the lifespan of the transformer material. Common transformer faults include insulation layer breakdown, winding burnout, copper wire breakage, etc

5. Multilayer ceramic capacitors

The common problem with SMT ceramic capacitors is at the solder joints of the capacitors, which may crack due to some stress. To minimize the possibility of occurrence, it is recommended to avoid using multiple ceramic capacitors in parallel as much as possible

6. Output rectifier diode

Diodes mainly bear two major electrical stresses, including reverse withstand voltage and forward current. At the same time, diodes are also heating devices. To ensure the service life of this device, we will provide sufficient margin during design to ultimately ensure the batch performance of the power adapter

7. Optocouplers

The current transfer ratio (CTR) will gradually decrease over time. In order to maintain loop stability, the current of the light-emitting diode will continue to increase, eventually reaching its limit value, causing damage to the optocoupler