Driver power supply manufacturers Driver power supply development trend
 

2. The LED driver power supply has an intelligent control function, which enables the LED load current to be controlled at a pre-designed level under the influence of various factors. When the load current changes due to various factors, the main control IC restores the load current to the initial design value by controlling the switch.

3. In the design of the control circuit, it develops towards three aspects: centralized control, standard modularization, and system scalability. 4. Under the condition of limited LED luminous efficiency and luminous flux, the characteristics of LED color diversity are fully utilized to develop a color-changing LED lighting control circuit.

The development direction of LED driver power supply manufacturers

Driver power supply manufacturers' driver power supply LED has many advantages, such as environmental protection, energy saving, small size, long life, etc., which makes LED gradually replace traditional fluorescent lamps and incandescent lamps in general lighting in the future. The performance of the driver power supply is the key to ensure the overall performance of the LED, so it is necessary to ensure that the LED driver power supply has the advantages of compactness, long life, and high reliability. The research hotspots of LED drivers are as follows: 1. Driving power supply manufacturers to improve the service life of driving power supplies One of the important advantages of LED is its long service life, about 30,000 to 100,000 hours. Traditional LED driver power supplies contain electrolytic capacitors, and the life of electrolytic capacitors is relatively short, about 5,000 hours, which is the main reason for restricting the life of LED driver power supplies, so try not to use electrolytic capacitors in LED driver power supplies.

2. Improve the input power factor of the driver power supply and reduce total harmonic distortion. The U.S. Department of Energy's ENERGYSTAR solid-state lighting document states that power factor correction is mandatory for any power level. This standard applies to a range of products, such as table lamps, cabinet lighting, etc. Among them, the power factor of household lighting LED driver power supply should be greater than 0.7. The power factor of commercial lighting LED driver power supply should be greater than 0.9. The IEC61000-3-2 harmonic content standard stipulates that for illumination greater than 25W, the total harmonic distortion THD should be less than 35%, and the power factor should not be less than 0.7. The introduction of these standards has put forward higher requirements for the design of LED lighting driver power supply.

LEDs are relatively small, which makes them ideal for portable products. The LED driver should also be as small as possible so that it can be smoothly installed in the LED lamp holder. During the design process, the size of the driver should be minimized. 4. Driver power supply manufacturers to improve the reliability of driver power supply During the operation of LED, non-human factors such as temperature rise and equipment aging can cause fatal damage to the LED body. Therefore, the LED driver power supply should add protection circuits such as overvoltage protection and overcurrent protection to deal with accidents and ensure the safety of the LED body.