40WLEDBULBGEVB

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The 40W LED Bulb GEVB (General Evaluation Board) is a complete evaluation board for creating LED lighting applications in just minutes. It features a single board design that enables integrated LED power conversion and offers the highest level of protection from over-voltage, over-current, overtemperature and short-circuit hazards when driving LEDs up to 40W. It contains multiple LED driver stages and is capable of driving up to six LEDs in series in a closed loop emergency lighting application. In this article, we will discuss the application field and working principle of the 40W LED Bulb GEVB Evaluation Board.

Application Field

The 40W LED Bulb GEVB offers an ideal solution for general LED lighting applications, as well as for emergency lighting, industrial lighting, street lighting or any other application that requires reliable and efficient LED light sources. Its high level of protection from over-voltage, over-current, overtemperature and short-circuit hazards makes it ideal for driving current levels up to 40W in a closed loop system. It also features advanced protection features like over-temperature protection, short-circuit protection, and thermal shutdown.

Working Principle

The 40W LED Bulb GEVB is powered by a single control board and contains a power MOSFET stage, several LED driver stages, a current sense resistor, a sense amplifier, and a temperature tracking circuit. Each LED driver stage is connected to a LED in a closed loop application and monitors the LED current to maintain a constant current output. When one LED reaches its maximum current, the other LED drivers reduce their current output to compensate, leading to a constant current output in the closed loop system. In order to protect the LED drivers, the GEVB includes protection features such as over-temperature protection, short-circuit protection, current fold-back, and thermal shutdown.

The GEVB is designed for maximum performance and flexibility, allowing for the adjustment of LED current and temperature tracking, as well as the current sensing capability. The LED drivers also feature constant current regulation and over-voltage detection. This allows them to maintain constant current output even when the input voltage changes. Additionally, the GEVB integrates a power management stage which regulates the input voltage and monitors the output current in order to maintain a constant current output.

Conclusion

The 40W LED Bulb GEVB is a powerful, reliable, and efficient evaluation board for creating LED lighting applications in minutes. Its integrated LED power conversion, high level of protection from over-voltage, over-current, overtemperature and short-circuit hazards, as well as its advanced protection features, make the GEVB a superior choice for emergency lighting, industrial lighting, street lighting or any other application that requires reliable and efficient LED light sources.

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