The drive power supply is a power converter that converts the power supply into a specific voltage and current to drive the LED to emit light. Usually: the input of the LED drive power supply includes high-voltage power frequency AC (that is, mains power), low-voltage DC, high-voltage DC, low-voltage high-frequency AC (such as the output of an electronic transformer), etc. The following LED drive switching power supply supplier will introduce to you what the driving power supply means and the difference between the driving power supply and the switching power supply.
The difference between driving power supply and switching power supply
1. Different in nature
1) Nature of switching power supply: a high-frequency power conversion device.
2) The nature of the driving power supply: a power converter that converts the power supply into a specific voltage and current to drive the LED to emit light.
2. Different characteristics
1) Switching power supply features:
① Small size and light weight: Since there is no power frequency transformer, the volume and weight are only 20-30% of the linear power supply.
②Low power consumption and high efficiency: The power transistor works in the on-off state, so the power consumption of the transistor is small and the conversion efficiency is high, generally 60-70%, while the linear power supply is only 30-40%.
2) Features of the drive power supply:
① High reliability Especially like the drive power of LED street lamps, which are installed at high altitude and have a waterproof aluminum casing drive power. If the quality is good, it is not easy to be damaged, and the number of repairs is reduced.
②High-efficiency LED is an energy-saving product, and the efficiency of the driving power supply should be high. It is particularly important for the power structure installed on the lamp. Since the luminous efficiency of the LED decreases with the increase of the temperature of the LED, the heat dissipation of the LED is very important. The power supply has high efficiency, low power consumption, and little heat generated in the lamp, which also reduces the temperature rise of the lamp. It is beneficial to delay the light attenuation of LED.
What is the role of the drive power?
The drive power supply is a kind of power converter, which can be divided into constant current type, regulated voltage type, pulse drive, and AC drive according to the drive mode. The driving power supply has high reliability and has functions such as overcurrent protection and open circuit protection.
This is the end of this article. I hope this article will be helpful to everyone.