What is offline LED driver? Offline switching power supply
Off-line switching power supply, also known as isolated switching power supply, is an AC-DC converter circuit. AC and DC are isolated by transformer.
Off-line switching power supply, also known as isolated switching power supply, is an AC-DC converter circuit. AC and DC are isolated by transformer. In some laboratories or high demand occasions, for the safety of the experimental staff, the experimental input power is generally used 1: 1 frequency transformer and the mains to isolate, so that the laboratory laboratory personnel regardless of which line encountered The root line will not have the risk of electric shock, because the isolated power and the earth is not connected. In industrial control equipment, it is sometimes necessary to isolate the power supply lines between the two systems, such as isolating ground noise, isolating high common mode voltages, etc., using a DC converter with a transformer to separate the two power supplies They are independent of each other, in order to achieve the above purpose. Each module is powered separately to prevent a module from damaging other modules due to high voltage discharge or other causes. The purpose of this can be to ensure that each module is working independently and undisturbed.
Offline LED driver is a circuit using EMI suppression circuit, rectifier filter circuit, paddle PFC circuit, AX2028 constant current system circuit to drive LED work, LED products to drive the power requirements include: stable, reliable, efficient, common. AX2028 is a constant current LED control chip, the system application voltage range of 12VDC to 600VDC, duty cycle of 0 to 100%, fixed off time mode of operation. It supports AC 85V ~ 265V input, non-isolated and isolated applications. AX2028 uses a unique technology for constant current control and compensation methods, the LED current in the exchange of 85V ~ 265V range of less than ± 3% .AX2028 using optimized system structure, making the system efficiency is higher than 92%. Can be widely used in E14, E27, PAR30, PAR38, GU10 and other lamp cups and LED fluorescent lamps.
