UM2170
Efficiency
testing and measurements
DocID030279 Rev 1
13/24
3.2
IEC61000-3-2 class C harmonic measurement
The STEVAL-ILL082V1 is IEC61000-3-2 compliant. The harmonic current is measured
from the 2nd to the 39th harmonic order as required by IEC61000-3-2 class C for lighting
equipment. The measured value at 230 V
AC
is well behind the specified harmonic limits.
Figure 14: STEVAL-ILL082V1: full load condition
3.3
LED dimming versus output power and LED current
The LED dimming is implemented in 5 steps: 2.5, 20, 40, 60 and 80% of the LED power
output. It is linear for the entire EU line voltage range and almost independent from line
voltage variations.
Figure 15: STEVAL-ILL082V1: LED dimming linearity
3.4
Standby power consumption
The STEVAL-ILL082V1 evaluation board standby power consumption is between 0.4 and
0.6 W for the entire line voltage variation.
At the lowest dimming condition, the power consumption is less than standby thanks to the
fact that HVLED815 PF IC is working in high voltage startup mode to generate 3.3 V
housekeeping power supply.
