Why do LED drivers need high efficiency?
High efficiency is the overall energy saving requirement of LED lighting system, and is the foundation and guarantee of low temperature rise, long life and high reliability.
1) High efficiency, low loss, low temperature rise
For example, an LED driving power supply with an output of 100W, when the efficiency reaches 95%, its loss is 5.2W, and when the efficiency is only 85%, its loss is 17.6W, the latter is 3.4 times of the former, the experiment shows that under the same conditions, the former The temperature is 10-15°C lower than the latter.
2) Reduce the working temperature of LED lights and delay light decay
The increase in the temperature of the LED chip will lead to changes in the performance of the light-emitting device and attenuation of the electro-optical conversion efficiency, and even failure in severe cases. Experimental tests have shown that the luminous flux of the LED itself decreases by 3% for every 5 degrees Celsius increase in the temperature of the LED itself.
3) High efficiency, low temperature rise, long life
If you choose a high-temperature electrolytic capacitor with a life span of 10,000 hours at 105 degrees, and according to the common life expectancy of electrolytic capacitors, the company estimates that "every 10 degrees lowers, the life is doubled", then its working life in a 95-degree environment is 20,000 hours, and at 85 degrees The working life in the environment is 40,000 hours. For example, when the operating temperature of the Inventronics drive power supply is generally 70 degrees, and the temperature of the electrolytic capacitor is roughly controlled at about 85 degrees, the life can reach 40,000 hours. If it is calculated by 12 hours of work per day , the life expectancy is nearly ten years.
4) High efficiency, low temperature rise, high reliability
As the temperature of the power supply decreases and the working environment of ICs and power semiconductors improves, the MTBF (mean time between failures) will increase significantly.
