How To Effectively Use LED Drivers?

- Sep 06, 2018 -

How to effectively use LED drivers?

 

Universal Dc Adapter Power.jpgBased on voltage-current rate-of-change characteristics, LED drivers require a compliant design, so understanding their characteristics and selecting the appropriate driver circuit for a particular application is critical. Such a dedicated drive circuit can provide the rated voltage and current for these LEDs, creating a good condition for their normal operation.


To achieve the purpose of illumination, the LED needs a forward voltage to allow current to flow. The LED driver therefore has to provide a forward bias to the LED to illuminate it. The level of illumination or brightness of an LED is usually proportional to the magnitude of the forward current. In addition, the current through the LED should not exceed the rated current specified by the device, otherwise it may cause permanent damage. Thus a constant current drive circuit is the ideal solution for controlling the current at the correct level of driving the LED. In other words, the LED drive circuit is a power conversion circuit that provides a constant current instead of a constant voltage. The LED driver circuit should contain at least one voltage detection circuit and one current switch circuit.


When the voltage detecting circuit detects different voltage levels of the power supply, it sends a signal to the current opening circuit, and then the current switching circuit is automatically activated, and the electrical setting of the LED is re-adjusted using a predetermined current value, thereby effectively lighting As many LEDs as possible.



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