Consideration from electricity rules to the characteristics and  requirements of  LED driver design.

Between daily life or the production of electricity grid electricity rules and LED drive power characteristics and requirements, usually in the selection and design of LED drive power to consider the following points:

 1. Solid special circumstances like LED street lamp drive power mounted at a height not convenient maintenance, maintenance repair costs in the conventional case will be relatively large.

 2. High-efficiency LED energy-saving product, the higher efficiency of the drive power. LED drive power on the power supply unit
Lamps within the structure, particularly the main. LED luminous efficiency is followed LED temperature rise and decline, so the LED heat very major. High power efficiency, and its depletion power, heat a small fixture, will reduce the temperature rise of the lamp. Beneficial to delay the LED light failure.

3. The high power factor power factor grid load requirements. Generally less than 70 watts of electrical appliances, there is no mandatory targets. Although power is not a single bit lower electrical power factor has little effect on the power grid, but the evening lighting, the similar load too concentrated, to be grid more serious pollution. It is said that in the near future, may be power factor index requirements for 30 watts to 40 watts of LED drive power.

4. Drive now prevailing in two ways: The first is a constant voltage source for more than a constant current source, each constant current source power individually to each LED. In this way, the combination of flexible LED fault all the way, does not affect the work of other LED, but the cost will be slightly higher. Another is a direct constant current power supply, LED series or parallel operation. Its advantage is low cost, but the flexibility is poor, but also to resolve an LED fault, does not affect the other LED running problem. These two forms coexist for some time. Multi-channel constant current output power supply would be better, in terms of cost and performance. Perhaps the future direction of the mainstream.

5. The ability of the anti-surge protection LED power surge is relatively poor, especially anti-reverse voltage capability. Is also very important to strengthen the protection in this regard. Some LED lights are installed in the outdoors, such as LED street lights. Due to the the grid load Kai rejection and lightning induction from the grid system will invade various surge some surge can cause damage to the LED. Therefore, LED driving power supply to have inhibitory surge intrusion, and the ability to protect the LED without being damaged.

6. Maintain its normal use of power in addition to the protection features of the practice, it is best to add the constant current output LED temperature negative reaction to prevent LED temperature is too high.

7. The device type, the protection aspects lamps outside the power structure to be waterproof, moisture-proof shell Fast.

8. The drive power of the use of time and usage time of the LED other accessories photogenic adaptation.

9. To achieve compliance with the security requirements of the current national regulations and electromagnetic compatibility parameters.

Market with the use of LED products in various industries become increasingly common for the implementation of the functionality of the product and market applications, LED driver power development and application of the the increasingly appropriate LED industry market requirements.