The main features of LED driver
High reliability
LED products are mainly composed of LED chips, dissipation case and control circuit. The quality of LED driver directly affects the quality of LED luminaires, especially that of street lamp, because it is installed at a high altitude, so it is inconvenient to fix it and the maintenance fee is high as well.
High efficiency
LED is energy saving product, so the efficiency of LED driver is very high. the installation structure of LED driver inside the LED luminaires is very important. Because the luminous efficiency decreases with the increase of LED temperature, so the heat dissipation is very important. The dissipation rate of high efficiency driver is low, so it causes lower thermal energy, and then reduce the temperature rise of lamp. It is beneficial to delay the light decay of LED.
High PF factor
The power factor is the load requirement of grid. Generally, electrical appliances below 70w have no hard indicators. Although a single low PFC factor appliance has little impact on grid, the amount of lighting at night is large, and the same load is too concentrated, so it will cause serious pollution.
Surge protection
LED anti-surge ability is relatively poor, especially the ability to resist reverse voltage and strengthen the protection of this aspect is important as well. Some LED luminaires are installed outside, such as street lamp. Due to the load of the grid and the induction of the lightning strikes. All kinds of surges invade from the grid system and some of them will lead to the damage of LED. Therefore, the led driver should have the ability to inhibit the invasion of the surge and protect the led from being damaged.
Protection mechanism
In addition to conventional protection function, the driver better needs to be added with the function of LED temperature negative feedback to prevent driver from overheating.
Safety regulation
LED drivers need to meet safety standards and the requirements of electromagnetic compatibility and the lifespan of LED drivers need to be matched with the lifespan of luminaires.