ESP040W-0940-43

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LED Drivers

LED drivers are a type of power supplies specifically designed to power and control light-emitting diode (LED) strings or arrays. They are usually either constant current or constant voltage. LED drivers are designed to provide a stable flow of current and voltage to LEDs, even when the supply voltage is fluctuating. This ensures that LEDs are provided with a consistent level of output. They are also designed to protect the LEDs from variations in the voltage or current that they draw.

ESP040W-0940-43

The ESP040W-0940-43 is a high-performance LED driver with a power rating of 40W and a current rating of 0.94A. It is capable of providing a wide range of output voltages from 10 to 50V. The device has an internal soft start function that reduces power consumption and provides a smooth transition to the desired output voltage. It also features an over-current protection feature that prevents damage to the device and application from too much current being delivered.

Application Field

The ESP040W-0940-43 LED driver is ideal for applications that require a reliable and stable output voltage, such as LCD TVs, LED backlights, lighting fixtures, and architectural lighting. Its wide operating voltage and current range make it suitable for a variety of applications. It is also suitable for outdoor applications, as it is resistant to high temperatures and moisture.

Working Principle

The ESP040W-0940-43 LED driver utilizes a buck converter to regulate the output voltage. In a buck converter, an AC input is rectified to DC and then regulated by an active component, such as a transistor. The transistor constantly monitors the output voltage and adjusts its operating frequency to maintain the output voltage within desired parameters. This ensures that the LED is efficiently supplied with the correct amount of voltage and current.

The device also features an over-current protection circuit, which works by measuring the average current and comparing it to a set threshold value. If the current exceeds the threshold value, the protection circuit will shut off the output. This prevents any damage to the device or LED due to an excessively high current.

Overall, the ESP040W-0940-43 LED driver is an ideal solution for applications that require reliable, stable, and efficient power delivery.

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