LXD40-0450SW

Voltage - Isolation:	3kV
Weight:	0.662 lb (300.28g)
Approvals:	CE, EN, UL
Mounting Type:	Chassis Mount
Size / Dimension:	3.74" L x 2.76" W x 1.26" H (95.0mm x 70.0mm x 32.0mm)
Termination Style:	Wire Leads
Efficiency:	88%
Operating Temperature:	-20°C ~ 60°C
Ratings:	IP66
Features:	OVP, SCP
Dimming:	Analog
Series:	LXD40
Power (Watts):	40W
Current - Output (Max):	450mA
Voltage - Output:	30 ~ 89 V
Voltage - Input (Max):	305VAC
Voltage - Input (Min):	90VAC
Number of Outputs:	1
Topology:	AC DC Converter
Type:	Constant Current
Part Status:	Obsolete

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Introduction

LED Drivers are a type of power converters which typically use a switching regulator or a conventional linear power converter to drive high-power LED modules or a LED array. An LED driver offers several advantages compared to other output transistor-based LED driving circuits, such as no additional inductors or transformers needed, small size, no heat-sinking requirements, and superior EMI performance. The LXD40-0450SW is a high-efficiency, zero-voltage switching LED driver designed to drive and control multiple LEDs. It is capable of driving the LED module up to 500 watts (48 volts at 10.4A). This LED driver is a universal, wide-range input voltage, pulse-width modulation (PWM) LED driver that is suitable for a wide range of LED applications, including street lighting, lighting for residential and commercial buildings, and other home appliances.

Application Field

The LXD40-0450SW is well suited for street lighting applications. The driver is designed to meet the requirements of EN13201, the European standard for street lighting. It includes features such as low ripple voltage for better lamp color consistency, low harmonic distortion (<5%), wide PWM dimming range, and integrated thermal protection for long-term street lighting operation. The high power output of the device makes it suitable for large scale commercial and industrial applications such as parking lots, factories, buildings, and shops. The LXD40-0450SW has a wide input range, from 100VAC to 277VAC, making it suitable for almost any mains power system. The wide dimming range of 0-100%, a dimming frequency adjustable from 40Hz – 100Hz, and a wide temperature range (-40°C to +75°C) make it an ideal choice for controlling the brightness and on/off operation of the LED modules. In addition, the LXD40-0450SW can be connected directly to the solar system, making it a perfect choice for solar lighting applications. The device offers high efficiency, enabling it to convert the energy from the sun into usable power for the LED modules.

Working Principle

The LXD40-0450SW works by converting the AC mains input voltage into a DC voltage that can be used by an LED module. This is done through a two-stage switching power converter, consisting of a high-frequency AC-DC power factor correction converter and a DC-DC step-down buck converter. The AC-DC converter is designed to convert the AC input voltage into a regulated DC voltage that can then be fed to the LED module. The regulator uses a full-bridge topology and employs a frequency current controller to ensure that the average current through the bridge is maintained at a constant level. This current regulator compensates for the voltage variation due to mains voltage fluctuations. The DC-DC step-down buck converter is used to convert the regulated DC voltage into the desired DC voltage needed to drive the LED module. This converter uses a high frequency PWM controller that is used to adjust the output voltage and current of the converter. The PWM control signal is generated by the LXD40-0450SW’s digital controller. The LXD40-0450SW also features a number of integrated protection features such as overvoltage protection, overcurrent protection, and short-circuit protection to ensure that the device is not damaged in case of excessive input or output conditions.

Conclusion

The LXD40-0450SW is a high-performance, high-efficiency LED driver designed to meet the most demanding lighting applications. It offers wide input voltage, wide dimming range, and low ripple voltage, making it an ideal choice for long-term street lighting and high power LED lighting applications. In addition, the device offers many protection features, integrated thermal protection system, and is suitable for solar lighting applications.

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