In the modern era of rapid development of science and technology, electronic devices have become an indispensable part of our lives. And all this is inseparable from a key component - switching power supply. 
And in the switching power supply, there is an important component inductance, how does it affect the work of the power supply? This article will delve into the role of inductors in switching power supplies.
First, the basic principle of inductance.
An inductor, also known as a coil, is a component that stores magnetic energy. When an electric current is passed through the coil, the coil creates a magnetic field that stops the change in current. To put it simply, an inductor has the characteristics of "on-DC and resist-AC".
Second, the role of inductance in switching power supply.
Energy storage: In switching power supplies, the main role of inductors is energy storage. When the switch is turned on, an electric current passes through the inductor coil, creating a magnetic field that stores energy. When the switch is disconnected, the magnetic field disappears, and the current in the coil produces a reverse electromotive force due to the disappearance of the magnetic field, and this electromotive force will continue to maintain the current flow for a period of time, which is what we usually call "magnetic energy release of the inductor".
Filtering: Due to the "on-DC, resistant-AC" characteristics of the inductor, it can effectively filter out the AC components and make the DC power supply more pure. This is critical for electronic devices that require a stable voltage.
Stable current: In the working process of switching power supply, the inductor can stabilize the current and prevent the sudden change of current from impacting the equipment.
3. Summary. As an important component in the switching power supply, the inductor has the effect of energy storage, filtering and stabilizing current so that our electronic equipment can operate stably and efficiently. As technology continues to evolve, we look forward to more efficient and stable switching power supply technologies, in which inductors will continue to play a key role.