LDU2430S500-WD

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LED Drivers are devices designed to control and convert the current and power for LED lights. LDU2430S500-WD is a LED driver, developed by STMicroelectronics, that is specifically designed for streetlight applications and AC to DC LED driver applications. The product supports a wide range of AC input voltages and current ratings. This driver is suitable for both single-side and double-side lighting systems and provides flexibility in the selection of output voltage, output current, and working mode.

Application Field

The LDU2430S500-WD is suitable for street lighting and other low power LED lighting applications. The product operates in the Boost converter mode and offers high efficiency of up to 90%. This driver can be used in both indoor and outdoor lighting systems and provides wide input voltage ranges, ranging from 88 VAC to 305 VAC.

The product features an active power factor correction (PFC) circuit, which helps to reduce total harmonic distortion and improve power factor. It also has a built-in surge protection circuit which helps to protect tunnel or bridge lighting systems from overvoltage or surge. This driver is also suitable for industrial LED lighting, signage application and construction lighting where lower power consumption and higher lumens per watt are required.

Working Principle

The LDU2430S500-WD is based on the Boost DC-DC converter topology. The device utilizes an N-channel MOSFET as a main switch. The input voltage is applied to the primary side, and the voltage is boosted to a fixed output voltage via the MOSFET switch. The output voltage is regulated via the MCU control loop. The outputs current is sensed by using a low resistance sense resistor.

The output current is then regulated by adjusting the pulse width modulation (PWM) duty cycle of the switch. The product integrates a programmable soft-start function to ensure controlled start-up. Additionally, it contains a protection circuitry against over voltage, over current, short circuit and overtemperature.

Conclusion

The LDU2430S500-WD is an ideal product for LED lighting applications such as indoor/outdoor lighting systems. It provides high efficiency, wide input voltage range, active PFC and surge protection circuit. This driver ensures constant regulation of the LED light output, low power loss and long lifetime of the LED lamps.

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