Output Current Dependencies - Philips Xitanium LED Xtreme SR Design-In Manual

Output Current dependencies

The actual output current in the application depends on
configuration of those driver features which influence output
current and which are enabled or activated, like ALO, CLO, SR
dim level, MTP, DTL, Dynadimmer and DCemDim.
The reference for output current is defined by the configured AOC
value in mA. The actual output current then follows the values as
configured for the several enabled features.
In formula, the actual output current is:
AOC x ALO x CLO x Dynadimmer x (MTP and/or DTL)
AOC x ALO x CLO x SR dim level x (MTP and/or DTL)
AOC x ALO x CLO x (MTP and/or DTL)
Example 1:
Driver AOC = 700mA, CLO = 70%, Dynadimmer level = 50% and
ALO = 80% and driver Tc is such that DTL dictates 50%
dimming. Actual output current is then 98mA or minimum
specified driver output current, whichever value is reached first.
Example2:
Driver AOC = 500mA, CLO = 80%, SR dim command =
242 (70%). Actual output current is then 280mA.
The following applies for DCemDim-equipped drivers while running
on DC input voltage:
Actual output current = rated AOC x 0.6 (max).
Design-in Guide - Philips Xitanium LED Xtreme SR driver 37