TRIAC Dimmable LED Drivers

Dimmable LD Drivers

The term “TRIAC dimmable LED driver” tends to be used to refer to a LED driver that is compatible with leading edge, or trailing edge dimming switches.  

What you actually need is a “Phase Cut Dimmable LED driver”. 

ADM stocks a wide range of phase cut dimmable LED drivers, which are compatible with most of the leading edge and trailing edge dimmers used in Australia. You can browse our product range by clicking on the following link: 

Phase Cut Dimmable LED Drivers 

Mean Well PCD-16-700B
Indoor Constant Voltage TRIAC dimmable LED driver
Outdoor Constant Voltage TRIAC dimmable LED driver


Leading edge dimmers use a TRIAC (triode for alternating current) switch to control the power. Which, of course is where the term “TRIAC dimmable LED driver” comes from.  

However, trailing edge dimmers use a completely different technology, typically using MOSFETs or IBGTs to control the power. Hence, why the term “TRIAC dimmable LED driver” is not always an accurate description. 

When buying a phase cut dimmable LED driver it is advisable to ascertain that it is compatible with the dimmer switch you intend to use before buying.  

Reputable brands, such as MEAN WELL and Power Source publish details of dimmer switches that their LED drivers are compatible with.  

However, it is advisable to test the compatibility for yourself. Especially, if you are designing or installing a lighting system that is going to use multiple dimmers and drivers. 

ADM's expert team is on hand to help you select the most appropriate LED driver for your application. Simply call us on 1300 236 467.  

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Power Source


15 February 2019