LED lamp driver power supply design of the seven experience


1, To give up more than 4 output, the development of si […]

1, To give up more than 4 output, the development of single or two outputs, to give up large current and large current, the development of small current.
The more the more output channels, the more complex, the current interference between different ways to solve the high cost, if not resolved, the failure rate is higher. In addition, the more the output of the more the total output current is greater, and the current is the main reason for fever, the voltage itself does not directly lead to fever, in short, the heat is proportional to the square of the current, that is, the current increases to the original 2 times, then the heat will increase to 4 times the original, the current increased to 3 times the original, the heat will increase to 9 times the original. In summary, single or two output LED lamp power failure rate will be reduced a lot.
2, Intelligent control is one of the advantages of LED lamps, and power supply is the key to intelligent control.
Intelligent control The most mature condition is most obvious on the application of LED street lamp and LED tunnel lamp lighting. Intelligent control can realize the stepless control of the lamp power according to the road traffic density at different time periods, meeting the application requirements and realizing huge energy saving Effect, you can save a lot of funding for highway authorities. The application of tunnel lighting not only saves energy, but also automatically adjusts the tunnel entrance brightness according to the brightness outside the tunnel, providing the driver with an over-visual stage to ensure driving safety.
3, To give up high-power, super power, choose a higher stability of small power supply.
Because the greater the power, the greater the heat, the more compact parts inside, is not conducive to heat, and temperature is the culprit power failure. Furthermore, the development of relatively low-power power relatively mature, stability and cost advantages. In fact, many high-power power solutions have not been verified by time and proved that they are all projects launched in a hurry, are experimental products, so an endless stream of failures. In contrast, due to the development of small and medium-sized power supply earlier, more mature technology programs.
4, Cooling and protection is the main external power failure factor.
Not only the power itself will be fever, the lamp will be fever, how to distribute the two heat sources reasonably is the lighting design engineers must consider the issue, we must prevent the excessive concentration of heat to form a heat island effect, affecting the power life. The use of separate power scheme is a good choice.
5, The feasibility of maintenance.
Power failure problem can not be completely avoided, only the replacement of the power to do with conventional light source replacement is so simple, the user can be happy, even if the power is broken, the mood will not be too bad, and the user's Good mood determines the fate of LED lamp manufacturers.
6, Protective performance.
Protection is also very important, water penetration may cause short circuit, the dust on the shell will affect the power of the heat, exposure will easily lead to high temperature and aging of wires and other components, from the actual experience of use, the rotation Wiring plug the higher the failure rate, the majority of leakage caused by failure.
7, Modular design.
Modular design has become the trend today, you must think of ways to integrate the power module, if the power pluggable way to solve the maintenance problem, will be welcomed by users, but also need to establish interface standardization, so that different manufacturers LED lamp power can be universal.
Summary: LED lamp power is best to use split design, while focusing on the power supply reliability and life expectancy, even if a little additional cost, only from the perspective of customers to design products, companies can get long-term development.


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