LED driver (LED Driver) refers to the power adjustment electronic device that drives LED light -emitting or LED module components.At present, the diode driving chip can be divided into: constant -voltage driving chips, constant current driving chips, and pulse -type drive chips.The constant voltage driver chip is generally our common DC/DC boost chip.The advantage of this scheme is that the chip cost is cheap and there is no complicated peripheral circuit.However, only the constant voltage driver LED can cause an uncontrollable circuit current during the drive output.It is impossible to ensure the consistency of LED brightness.
How to pick up the LED drive
Drive the power supply directly to connect the power supply, the output is connected to the LED light, and the light adjustment is PWM.(Connected to the drive power supply)
LED drive price
First, the price refers to its power size, generally between 30 and 100 yuan.2. Features 1. High reliability is particularly like the driving power of LED street lights. It is installed at high altitude, it is not convenient for maintenance, and the cost of maintenance is also large.2. High -efficiency LED is an energy -saving product, and the efficiency of driving power is high.For power installation, the structure of the LED drive power in the lamp is particularly important.Because the luminous efficiency of LED decreases with the rise of the LED temperature, the heat dissipation of LED is very important.The efficiency of the power supply is high, its loss of weight is small, and the heat in the lamp will be small, and the temperature of the lamp is reduced.It is beneficial to delaying the light failure of LED.
The role of LED drive
1. Since LED is a semiconductor device with sensitive characteristics and has negative temperature characteristics, the LED driver power supply (also known as a drive) is the protection of the stable working state during the application process.2. The requirements of the LED device for the driving power supply are almost harsh. LED is not like ordinary incandescent light bulbs, which can directly connect 220V AC market electricity.LED is a low -voltage driver. The complex transform circuit must be designed. The LED lights with different uses must be equipped with different power adapters.To design a good power supply, we must comprehensively consider efficiency conversion, effective power, constant current accuracy, power life, and electromagnetic compatibility, because the role of the power supply in the entire lamp is as important as a human heart.
LED drive principle
LED drive is a power adjustment electronic device that drives LED light -emitting or LED module components.Due to the viewing characteristics of the LEDPN knot, the range of the voltage and current change of the power supply that can adapt is very narrow. If it is deviated, it may not be able to light up the LED or the light emitting efficiency is severely reduced, or the service life is shortened or even burned the chip.The current industrial frequency power supply and common battery power supply are not suitable for directly supply LEDs. The LED drive is an electronic component that can drive LEDs to work in the best voltage or current state.

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