Driver power supply manufacturer-LED drive control system power supply is a voltage converter that can innovate the power technology by converting it into a voltage and current with a specific drive LED to emit light. Usually, the input information of the LED drive system power supply includes high-voltage power frequency AC (< commercial power supply), low-voltage DC, high-voltage DC, low-voltage control high-voltage power frequency AC (< electronic design transformer as output), etc. The output mode of the LED drive control system for power supply is mostly a constant current source, which can change its operating voltage as the forward voltage drop value of the LED changes by finding problems. Here is some knowledge about LED drive power supply for friends who have just entered the industry.

1. Driving power supply manufacturer-what is LED driving system power supply

Driving power supply manufacturer-LED driving system power supply can convert power into a specific voltage and current to drive the LED to emit light voltage converter. Usually, the input of LED driver power supply includes high voltage AC (commercial power supply), low voltage DC, high voltage DC, low voltage high frequency AC (such as the output of electronic transformer), and the output of LED driver power supply is mainly a constant current source. The voltage can change with the change of the forward voltage drop value of the LED. The design of the core management functional components of LED power supply mainly includes an important switch controller, inductor, switch internal control element, feedback resistor, input information data filter device, output signal filter device, etc. According to the requirements of different occasions, there are input overvoltage protection circuit, input undervoltage protection circuit, LED open circuit protection circuit, overcurrent protection circuit.

2. Driver power supply manufacturer-LED driver power supply characteristics

(1) High reliability

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(2) High efficiency

LED is an energy-saving product with high-efficiency drive power supply. It is very important to dissipate heat from the power connection installed in the lamp. The power management efficiency is high, the power control loss is small, the heat generated by the pressure in the lamp tube is small, and the temperature rise of the lamp tube is reduced. It is beneficial to delay the light decay of the LED.

(3) High power factor

The power factor can be a factor that is the requirement of the power grid for the load. Generally, electrical appliances below 70 watts have no problem meeting the mandatory indicators. Although the power factor of a small-power single appliance is low and has little impact on the power grid, the large amount of lighting at night and the excessive concentration of the same load will cause serious pollution to the power grid. For 30W~40W LED driver power supplies, it can be said that there will be certain index requirements for power factor in the near future.

(4) Driver power supply manufacturer - driving mode

There are two types now: one is a constant voltage source with multiple constant current sources, each of which supplies power to each LED separately. This allows for flexible combination, and a problem with one LED will not affect the operation of other LEDs, but the cost will be slightly higher. The other is a direct constant current power supply technology drive development method, where the LEDs are operated in series or parallel systems. Its advantage is low cost, but poor flexibility, and the problem of a certain LED failure needs to be solved without affecting the operation of other LEDs. These two forms coexisted for a while. The power supply management method with multiple constant current outputs will be better in terms of cost and performance. Perhaps it is our future mainstream development direction. (5) Surge protection LEDs have poor surge protection capabilities, especially the ability to resist reverse working voltage. It is also important to strengthen this protection. Some LED lamps are installed outdoors, such as LED street lamps. Due to the startup of the grid load and the induction of lightning strikes, various surges can invade from the grid system, some of which can damage the LEDs. (6) Protection function In addition to the regular protection system function of the working power supply, try to add negative feedback of the LED temperature in the constant current output to prevent the LED temperature from being too high. This needs to meet the requirements of safety regulations and electromagnetic environment compatibility.