LED Drivers for FLUXengines

We recommend to use a constant current LED driver for FLUXengine modules. Most users want to run more than one module, so finding the right power supply can be complicated because there are lots of specifications to  consider. Thus here you will find a little walk-through on the topic. For individual questions and recommendations we are happy to assist you. Furthermore you can refer to the FLUXengine LED Calculator which suggests LED setups and constant current drivers with only three clicks.

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Why Do I Need a LED Driver?

What´s a LED Driver good for? It´s quite simple to supply power to LEDs. Basically every power supply is capable of delivering current, providing that its output voltage is suitable. But it is best practice to use a constant current power supply – a so called LED driver. That way you can ensure flicker-free operation even at tiny mains fluctuations. Constant current drivers add savety and ensure reliable operation within your LEDs’ specs.We have picked some MEAN WELL LED drivers which perfectly harmonize with different FLUXengine setups.

Find the Right Driver – Step by Step

If you read this you ideally already have some idea what your setup will look like, since the driver already determines how many FLUXengines you can operate at a certain current. You should also think about the wiring scheme of the LED engines. We have gathered some examples. Series wiring is always prefered, but if you run a lot of engines you might consider parallel wiring in order to limit the voltage.

Always observe the savety instructions provided by the power supply manufacturer

Wiring FLUXengines to different types of LED drivers

In Rank and File

Series wiring is the easiest way to wire FLUXengine modules. Each FLUXengines needs a forward voltage of about 20 V. Thus your driver needs to be capable of providing n (module count) x 20 V for series wiring. The MEAN WELL HLG-H-C, XLG-(L/M/H) and ELG-C Series come with suitable options providing a wide range of output voltage (Constant Current Region)

LED Treiber mit FLUXengine in Serienschaltung

High Current, Low Voltage

Parallal wiring sometimes is more practical but can lead to unwanted side effects. In generall we would recommend series wiring. But the good thing about parallel wiring is that you deal with much lower voltages. Most Mean Well drivers with the “-20” or “-24” suffix, including HLG-H, ELG, XLG series are suited for this, have an output voltage range that includes 20 V (+-2V)

LED Treiber mit FLUXengine in Parallelschaltung

(Don’t) Mix it up

A couple of reasons can indicate that a hybrid of series and parallel wiring is the way to go. For expample you want to run more FLUXengines on one driver, but there is not enough voltage available. As a solution you can open a new “branch” and split the current. Again, the MEAN WELL HLG-H-C, XLG-(L/M/H) and ELG-C series are suited for this kind of scheme. But also other drivers are possible, provided they are capable to supply increments of 20 V (according to the number of FLUXengines in series).


We recommend MEAN WELL LED drivers for our FLUXengine LED modules. The Taiwanese manufacturer stands for reliable and reasonably priced producs since 1982.Wir empfehlen MEAN WELL LED-Treiber für unsere FLUXengines. Especially HLG-H and ELG series are recommended for constant current drivers. If you plan a high power setup you should take advantage of the superior efficiency of the HLG-H product line. ELG line is cheaper and also offers high efficiencies of over 90%. The newest XLG Series is a real deal breaker when it comes to economical LED lighting solutions. It performs at the same efficiency as the ELG series but offers greater flexibility and scalabilty due to the unique constant power design.

Caution when dimming MEAN WELL drivers

Every individual device is subject to deviations in performance. It is possible to set currents that exceed the specified maximum values using the dimming function.

In order to ensure safety of use and attaining the warranted lifetime it is necessary to oblige to the maximum ratings specified in the data sheet. After selecting a current, please verify that it does not exceed the maximum rating (multi meter). Alternatively you can measure the power consumption, if you don not have other measuring gear.

Adjust Power Supply with a Power Meter

Instead of using professional devices, it is also possible to adjust the current using a power meter.
<li>Plug the meter between the mains power supply and the and the load (LED driver)</li>
<li>Before switching on for the first time, set the LED driver to the lowest current (turn potentiometer counter-clockwise in most cases, e.g. internal potentiometer “I (out)” on your device)</li>
<li>After switching on you can slowly increase the current “I (out)” until the power meter indicates the desired power consumtion.</li>
<li>The power consumption must not exceed 60 W per FLUXengine and must not exceed the maximum power rating of the LED driver.</li>

Types A / B / AB

MEAN WELL LED drivers are available as different types which vary regarding the dimming operation. For the HLG, ELG and XLG series these types are indicated in the product number by the suffix -A, -B and -AB, e. g. HLG-240H-C2100A.

A – internal potentiometer

Products marked with the “A” suffix, can be dimmed using the internal potentiometer. In order to manipulate the current with a Phillips screwdriver you have to remove the protective cover on the device, marked I (out). The adjustment range is limited to 50 – 100 %.

B – dimming signal input wires / 3-1-function

MEAN WELL drivers with a “B” suffix come with a seperate pair of wires that are named “DIM+” and “DIM-“. In order to dim the output you can choose between three different signal inputs.

  • Resistance: The easiest way is to hook up a resistor between DIM+ and DIM-. You can use a standard 100 kOhm potentiometer, which is the reason it is very popular for DIY projects. If you want to simultaneously dim two or more drivers, you would need another resistance value [100kOhms/n(drivers)], e. g. 50 kOhms for two drivers, and so on.
  • Voltage: Most domestic use dimming switches rely on the 1-10 V standard signale to adjust brightness. This signal is supported by the B-Type drivers, too.
  • PWM: Pulse Width Modulation (PWM) is a digital signal that can also be interpreted by the B-Type drivers. It is especially convenient for DIY projects with automation in mind, e.g. using Raspis or Arduinos.

The advantage of the B-Type driver is not only its greater flexibility and more convenient operation of the external dimmer. It enables also a larger adjustment range of 10 – 100 % of the driver output

AB Type – Best of Both Worlds

You guessed it: drivers with “AB” suffix offer both internal potentiometer and the above mentioned 3-in-1 dimming input. It is the ideal solution which we are happy to offer with the majority of our driver products. Unfortunately it is not available for all models yet.