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The Disadvantages and Shortcomings of Switching Power Supplies

Article Source：Kinri Energy | Author：Kinri Energy | Issuing Time：2024.06.03
The Important Position of Switching Power Supply

Switching power supply is the core power supply component of many electronic devices. Widely used in various fields such as computers, communication equipment, consumer electronics, industrial control, etc., providing stable and reliable electricity for these devices.


400W Switching Power Supply


Secondly, switching power supplies have the characteristic of high efficiency, which can more effectively utilize electrical energy compared to traditional power sources, and are of great significance for energy conservation and reducing energy consumption. It has the advantages of small size and light weight, making it easy to integrate and install in various electronic devices, providing support for device miniaturization and portability.

Finally, with the continuous development of electronic technology, the technology of switching power supplies is also constantly advancing and innovating, constantly driving the development and transformation of the entire electronics industry.

The Disadvantages and Shortcomings of Switching Power Supplies

1.Noise issues

The noise problem of switching power supplies is always an aspect that cannot be ignored. When disharmonious noise appears, we must trace back to the source and carefully investigate whether it is due to abnormalities in high-frequency transformers or inductors, or defects in the filtering process. This seemingly small noise may actually reflect a more complex circuit condition.

2.Unstable output voltage phenomenon

The phenomenon of unstable output voltage poses a threat to the normal operation of electronic devices. The occurrence of this situation may be closely related to faults in the feedback circuit, and subtle changes in component parameters or significant fluctuations in input voltage may become triggering factors. Exploring these factors in depth and seeking methods to stabilize the output voltage is a topic we must face.

3.Severe fever situation

Severe heat generation can also occur in switching power supplies, which can be due to excessive load, abnormal operation of switch tubes, or inadequate heat dissipation design. It is crucial to investigate and address these possibilities one by one to ensure the safe and efficient operation of the switching power supply.

4.Inefficient issues

The problem of low efficiency also troubles us. Excessive switch losses, unreasonable drive circuit design, and poor performance of magnetic components may all be the reasons for the decrease in efficiency. How to improve efficiency and achieve the goals of energy conservation and environmental protection is the direction we are constantly striving for.

5.Electromagnetic interference issues

In addition, electromagnetic interference is also a serious challenge faced by switching power supplies. The electromagnetic radiation generated during its operation may cause interference to surrounding electronic devices. Exploring effective electromagnetic interference suppression measures to ensure the harmony and stability of the electronic environment is our unshirkable responsibility.

6.Relatively high cost

Switching power supplies are relatively more expensive than traditional transformer power supplies. Switching power supplies require the use of multiple electronic components, some of which are expensive and require additional processes such as processing, testing, and debugging. Therefore, in terms of the same power output and performance, switching power supplies are usually more expensive than transformer power supplies.

7.Short lifespan

The lifespan of switching power supplies is usually shorter than that of traditional transformer power supplies. Due to the working principle of switch mode power supply, its electronic components need to be constantly switched on and off according to time and usage conditions, which can lead to wear and aging of electronic components. During long-term use, electrolytic capacitors in switching power supplies often experience a decrease in capacitance value, leading to a decrease in the stability of the switching power supply.

8.Other issues

The difficulties or inability to start the switching power supply, as well as the large output ripple, also require us to analyze and solve them in depth with a scientific and rigorous attitude.

In summary, although switching power supplies are widely used in modern electronic devices, they have some shortcomings and shortcomings in terms of stability, EMI interference, cost, output ripple, and lifespan. However, with the advancement of technology, switch mode power supply technology is also constantly being optimized and upgraded, such as inverter power supply, flying rotor motor driver, etc. These technologies are striving to solve the shortcomings of switch mode power supply and provide more reliable power supply for electronic devices.
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