The development of LED lighting has entered a new stage, the modern lighting tomorrow star LED bulb driver power supply has the following requirements:
(1) High efficiency and low heat
Because the power supply is usually built-in, together with the LED bulb beads, the heat generated by the power supply and the LED chip will be superimposed. When the heat is generated and the balance is lost, the working temperature of the LED bulb is determined together, and the operating temperature of the LED chip determines the LED. The service life of the bulb;
(2) Long service life
According to the barrel theory, the shortest board determines how much water the barrel can hold, and the power supply is the shortest board that determines the life of the LED bulb, so the power supply is the key factor in determining the quality of the LED bulb.
(3) The current ripple amplitude is small
The small current ripple amplitude not only improves the quality of the illumination, but also extends the life of the component, thus extending the life of the LED bulb.
(4) High current ripple frequency
If the current pulsation frequency is high, it will not make people notice the strobe of the light. Of course, a good LED bulb should have no large current ripple.
(5) High power factor
Increasing the power factor in the LED driving power source can improve the power utilization efficiency of the power grid equipment and reduce the power grid loss, thereby improving the utilization efficiency of the power grid.
(6) Electrical isolation
The LED drive power supply is powered by a higher voltage AC mains grid, but the LEDs operate at a lower safe voltage and need to be electrically isolated between them to comply with safety regulations to avoid electric shock.
(7) Protection function
Generally, there should be over temperature, over current and open circuit protection to comply with safety regulations, and multiple protections to avoid electric shock accidents.
(8) small size
Because the general LED bulb power supply is an integrated built-in power supply, only a small size is required to install.
(9) low cost
Low-cost and low-price will have a good market performance. This is a common law in the Chinese market. It is difficult to change in the short term, and LED lamps companies must adapt.
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