The difference between switching power supply and LED lamp driving power supply
1. Switching power supply refers to the working principle or working state of the power supply.
2. The driving of LED lights refers to the output characteristics of the power supply.
The switching power supply is a high-efficiency small-volume power supply. It converts alternating current into direct current through rectification and filtering, and then oscillates into a high-frequency current of tens of kilohertz through a high-power transistor, and then synthesizes it into the required voltage through a transformer.
Since the high-power transistor is in a high-speed switching state, it is called a switching power supply.
3. Features
The advantage of this power supply is its small size and easy control. For example, the power of a desktop computer can reach several hundreds of W, and the power frequency transformer will not only be large in size, but also weigh more than ten kilograms.
Due to the high operating frequency of the switching power supply, the transformer can be made small and light, saving a lot of materials.
The way the power of the switching power supply is output, whether it is output in a constant current mode or a constant voltage mode, determines whether the switching power supply can be used for LED driving.
As the driving power supply of LED, there are many working modes, mainly including switching power supply, linear power supply, resistance-capacitance step-down power supply and so on.
Therefore, the switching power supply includes a part of the LED driver, while only a part of the LED driver belongs to the switching power supply. The difference between the two is still very obvious.
The above briefly introduces the difference between switching power supply and LED lamp driving power supply, I hope it will be helpful to everyone.
