MEAN WELL Driver for led MW XLG-150-H-AB
Specifications
| Input Voltage: | 100V - 305V AC, 142V - 431V DC |
| Output Voltage: | 27 ~ 56V |
| Output Current: | 1400~4170mA |
| Dimming: | With Dimming 3 in 1 |
| Output Power: | 150 W |
| Efficiency: | 91% |
| Operating Temperature: | -40°C ~ 90°C |
| IP: | 67 |
| Length: | 180 mm (7.08 in) |
| Width: | 63 mm (2.48 in) |
| Height: | 35.5 mm (1.398 in) |
| Weight: | 0.838kg |
Full Description
Mean Well XLG-150-H-AB LED Driver: Quality and Reliability
The industrial waterproof Mean Well XLG-150-H-AB driver with a nominal output power of 150W is designed to provide stable and safe power for modern LED lighting fixtures. Operating in Constant Current mode, this power supply guarantees optimal operating conditions for LED modules and high-power LED arrays, preventing their premature failure.
Key Features and Benefits:
- Universal "3 in 1" Dimming: The "AB" modification allows for flexible adjustment of the output current and lighting brightness using a PWM signal, 0–10V adjustable voltage, or a standard 100kOhm variable resistor (connecting the first and middle terminals).
- IP67 Protection Class: The hermetically sealed die-cast aluminum housing and 100% potting compound ensure electronics are fully protected from dust, direct splashes, and even water jets, making this driver an excellent choice for use in grow tents, greenhouses, and hydroponic systems.
- Comprehensive Safety System: The manufacturer has integrated multi-level automatic protection against output short circuits, overloads, overvoltage, and dangerous overheating (overtemperature protection). Perfect for DIY projects.
Thanks to its high energy efficiency (up to 91%), reliability, and strict compliance with international quality standards, the XLG-150-H-AB LED driver ensures 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) source with an operating voltage range of 27–56 V. The maximum output current is limited by the 150W power rating; this means you cannot get the maximum 4.17A current at 54V. The maximum current at maximum voltage is 2.68A. This LED driver is perfect for building custom grow lights, especially when using high-power arrays or specialized LED modules (e.g., with Osram OSCONIQ chips). A crucial point for your calculations: if you want to squeeze the maximum efficiency out of the unit (rated up to 91%), build your LED string so that the total forward voltage drop is closer to the upper limit of the range — optimally keeping it between 45–54 V.
If you have trouble choosing a driver and reading the polygonal operating area graph, you can use the interactive Mean Well XLG LED driver operating area diagram ↗.
Dimming Nuances (AB Index)
The built-in "3 in 1" control circuit works stably and is highly convenient:
- PWM: It adequately handles frequencies from 100 Hz to 3 kHz. If you plan to control it with a microcontroller, be sure to match the logic levels — use a transistor switch. Inverted PWM is allowed, which controls a transistor that shorts the DIM+ and DIM- wires together. This is the simplest way to dim using a microcontroller.
- Manual adjustment: Use a standard 100 kOhm linear potentiometer. The wattage rating doesn't matter, as the currents are negligible. Connect the DIM+ and DIM- contacts to the first and wiper (middle) pins of the potentiometer.
- Limitations: The driver cannot smoothly turn on the light from exactly 0%; in reality, it starts powering the LED at 8-12% output. Keep this in mind if you are writing firmware for a microcontroller. The minimum PWM value that stably starts the driver is 30-32 out of 255.
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 MW XLG-150-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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