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 generation Because the power supply is usually built-in, together with the LED bulb, 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 LED bulb operating temperature is finally determined together, and the LED is The working temperature of the chip determines the service life of the LED 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 determining the quality of the LED bulb.
(3) Current pulsation amplitude Small current pulsation amplitude can not only improve the quality of illumination light, but also extend the life of components, thus extending the life of LED bulbs.
(4) Current pulsation frequency High current pulsation frequency will not make people notice the strobe of the light. Of course, a good LED bulb should have no large current pulsation.
(5) High power factor The improvement of the power factor in the LED driving power supply 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) The electrically isolated 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 accidents.
(7) The protection function should generally have 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 good market performance. This is a common law in the Chinese market. It is difficult to change in the short term. LED lamp companies must adapt.
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