In practice, there’s no difference at all. These are different names used by the LED industry to describe the same product.

Although many people (even electricians!) use the catch-all term ‘LED transformers’, all power supplies (drivers) that are designed for use with LEDs are more than just that. An LED power supply doesn’t simply step down (transform) voltage; it also converts current from mains AC to DC.

So some lighting companies call them ‘transformers’, as they transform high-voltage 240-volt (mains power) down to a lower voltage such as 12v or 24v. Some companies call them ‘LED drivers’, because they drive other lighting products. And they are often called ‘LED power supplies simply because they supply power to your led lights