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MEAN WELL Driver for led XLG-320-H-AB

MEAN WELL Driver for led XLG-320-H-AB

Specifications

Input Voltage: 100V - 305V AC, 142V - 431V DC
Output Voltage: 30 ~ 56V
Output Current: 5560~7420mA
Dimming: With Dimming 3 in 1
Output Power: 312 W
Efficiency: 92.5%
Operating Temperature: -40°C ~ 85°C
IP: 67
Length: 246 mm (9.7 in)
Width: 77 mm (3 in)
Height: 39.5 mm (1.5 in)
Weight: 1.45kg

Full Description

Mean Well XLG-320-H-AB LED Driver: Quality and Reliability

The industrial, waterproof Mean Well XLG-320-H-AB driver, with a nominal output power of 320W, is designed to provide a stable and safe power supply for modern LED lighting fixtures. Operating in Constant Current (CC) mode, this power supply guarantees optimal operating conditions for LED modules and high-power LED arrays, preventing premature failure.

Key Features and Benefits:

  • Versatile "3-in-1" Dimming: The "AB" modification allows for flexible adjustment of the output current and lighting brightness using a PWM signal, 0–10V regulated voltage, or a standard 100kΩ variable resistor (by connecting the first and middle terminals).
  • IP67 Protection Class: The sealed die-cast aluminum housing and full potting compound 100% guarantee the protection of the electronics against dust, direct splashes, and even water jets. This makes the driver an excellent choice for use in grow boxes, greenhouses, and hydroponic systems.
  • Comprehensive Safety System: The manufacturer has integrated multi-level automatic protection against output short circuits, overload, overvoltage, and dangerous overheating (overtemperature protection). Suitable for DIY projects.

Thanks to its high energy efficiency, with up to 92.5% efficiency, reliability, and strict adherence to international quality standards, the XLG-320-H-AB LED driver ensures the stable and uninterrupted operation of LED lighting equipment over many years of intensive use.

Additional Information

The "H" (High Voltage) version of the LED driver is a classic constant current (CC) power supply with an operating voltage range of 30–56 V. The maximum output power is 320 W, which means the maximum output current of 8 A is only available at lower output voltages. At the maximum output voltage of 56 V, the driver is power-limited and can deliver approximately 5.71 A. This LED driver is an excellent choice for professional custom grow lights, high-power LED luminaires, and industrial lighting systems using premium LED modules based on Osram OSCONIQ, Seoul Semiconductor, Cree, and similar high-efficiency LEDs. For maximum system efficiency (rated up to 94%), the total LED forward voltage should be designed as close as possible to the upper end of the operating range, ideally between 45 V and 54 V.

If you have difficulty selecting the correct driver or interpreting the polygon operating area chart, you can use the interactive Mean Well XLG operating area diagram ↗.

Dimming features (AB version): The built-in 3-in-1 dimming interface is reliable, stable, and very easy to integrate.

  • PWM control: The driver reliably accepts PWM frequencies from approximately 100 Hz to 3 kHz. When using a microcontroller, a transistor driver is recommended for proper level shifting. Inverted PWM control is fully supported by using a transistor that shorts the DIM+ and DIM− terminals together. This is the simplest and most reliable method for dimming the driver from Arduino, ESP32, STM32, and similar microcontrollers.
  • Manual dimming: A standard 100 kΩ linear potentiometer can be used. The potentiometer power rating is not critical because the dimming circuit draws only a negligible current. Connect the DIM+ and DIM− terminals to the two outer potentiometer terminals, with the center terminal acting as the wiper.

Limitations: The driver cannot smoothly start from an absolute 0% output level. In practice, LED emission begins at approximately 8–12% of rated output power. This should be considered when developing microcontroller firmware. For most Mean Well XLG drivers, the minimum PWM duty cycle required for reliable startup is approximately 30–32 out of 255 using an 8-bit PWM signal.

Frequently Asked Questions

Brightness control for LEDs or LED modules connected to a MEAN WELL driver is only possible in series and models specifically designed for this purpose. For example, in the XLG series, the LED driver part number must include the "AB" suffix, such as XLG-240-H-AB or XLG-25-AB. This indicates that the driver supports "3-in-1" output current dimming via a 0–10V regulated voltage source, PWM signal, or a standard 100kΩ variable resistor. In the HLG/ELG series, support for external dimming is indicated by the letter "B" at the end of the part number. Certain other MEAN WELL LED driver series also support dimming, though the control methods differ and are intended for more specialized residential or industrial applications.

Yes, provided that the MEAN WELL Driver for led XLG-320-H-AB housing has an Ingress Protection rating of at least IP44. For humid environments (grow boxes, hydroponics), we recommend using only MEAN WELL models with an IP65 rating or higher. An IP65 protection level allows for the use of the LED driver in conditions of very high humidity and protects the device from direct splashes or even water jets, which is critical for hydroponic systems.

Parallel connection of LED modules to a high-power LED driver is always permissible, provided that one single rule is strictly observed: all parallel-connected LED modules (or diodes) must be of the exact same model and have the identical voltage drop. This guarantees a uniform current distribution among the LED modules or diodes. It is also worth noting that in a parallel LED configuration, the current cannot be distributed 100% evenly; there is always a 5–10% margin of error. Therefore, LEDs or LED modules should not be operated at their maximum rated current, and a current headroom of at least 10% must be maintained.

When using MEAN WELL drivers, there is no need to worry about any additional protection; it is sufficient to adhere to standard high-voltage grid connection practices, wire insulation regulations, and to utilize appropriate residential or industrial input circuit breakers. In MEAN WELL LED drivers and power supplies, the manufacturer integrates a comprehensive suite of protective features, including protection against overload, short circuits at the output, overtemperature, and overvoltage, along with various other safeguards depending on the specific series of the LED driver or power supply.

The most likely cause is the activation of the underload protection (low voltage cutoff). For example, if the minimum output voltage of the LED driver is 51V, and an LED matrix with a nominal voltage of 36V is connected to it (insufficient load), the driver will begin to ramp up the voltage upon startup until the current reaches its set limit, such as 1A. However, since a 1A current will flow through the circuit at 36V instead of the required 51V minimum, the LED driver will immediately trip its protection circuit and shut down the output. After a brief pause, it will attempt to restart the LED matrix, causing a 1A current to flow again at a voltage below the minimum allowable threshold. This cycle repeats, resulting in sharp LED flashes at a frequency of approximately 1Hz. If the connected load is 100% compliant with all specifications, the issue may be due to a faulty LED module, a poor connection, or a failure within the LED driver itself.

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LED Drivers
MEAN WELL Driver for led XLG-320-H-AB
Price
$ 67.00
In stock (1)

Info

Brand MEAN WELL
Article 4711287482316

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