What are the different types of dimming for LED drivers

- Aug 14, 2018-

OTTIMA Constant Current LED drivers are available with different types of dimming. OTTIMA Constant Voltage drivers are non-dimmable. The dimming types are explained below:

  1. Phase Dimming

    • There are two types of Phase Dimming: Leading Edge Dimming and Trailing Edge Dimming

    • Hatch LED drivers with a “P” in the part number after the current rating are compatible with both Leading Edge and Trailing Edge Phase Dimmers 

    • Leading Edge dimming is sometimes called Forward Phase or TRIAC dimming

    • Trailing Edge dimming is sometimes called Reverse Phase or Electronic Low Voltage Dimming.

    • There is a massive installed base of phase dimmers which is why they are so popular.

    • There are no additional wires on a Phase Dimming driver. The dimmer is wired in line with the output of the driver.

    • Phase dimming is only available in 120V input

  2. 0-10V Dimming

    • This dimming type is used in most new construction and commercial applications.

    • Hatch LED drivers with a “Z” in the part number after the current rating are compatible with 0-10V dimmers 

    • There are extra wires (usually grey and purple) on the driver that hook up to the 0-10V dimmer.

    • 9V is the maximum light level and 1V is the minimum light level.

    • 0-10V dimming is available in universal 120V-277V input.