USING MEAN WELL CONSTANT VOLTAGE LED DRIVERS IN CONSTANT CURRENT MODE

Most of the MEAN WELL constant voltage LED drivers stocked by ADM can be used in constant current mode.

EXCEPTIONS

The exceptions are the PWM, IDLV and APV series LED drivers.

HOW DOES IT WORK?

The actual current that will be delivered by the LED driver is shown in the product data sheet as the “Rated Current”.

You simply run the driver at the maximum current output. The MEAN WELL LED driver will then ‘clamp’ this current and continue to operate as a constant current LED driver.

WHAT IF I CAN’T FIND A MEAN WELL LED DRIVER WITH REQUIRED OUTPUT?

If you cannot find a MEAN WELL LED driver with exact rated output current required, then we recommend looking at the ‘adjustable models’ within the HLG-H and ELG series. These are identified with either an ‘A’ or 'AB' suffix to the part number displayed on the LED driver. For example: HLG-120H-24A.

The current output of these LED drivers can be adjusted via a built-in potentiometer. The current adjustment range available is shown in the product data sheet.

It should be remembered that when selecting a constant current LED driver, you need to ensure that it can deliver the current within the voltage range that is suitable for the LEDs.

All MEAN WELL constant voltage LED drivers, which can be used in constant current mode will have a ‘constant current region’ stipulated within the data sheet. You will need to check that the input voltage required by your LEDs is within the stipulated constant current region.

Please do not hesitate to contact ADM, if you require assistance in selecting a suitable LED driver. A member of our expert team will be happy to answer any questions.

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