Datasheet
Test results and significant waveforms AN3119
10/32 Doc ID 16849 Rev 2
4 Test results and significant waveforms
4.1 Harmonic content measurement
One of the main purposes of a PFC pre-conditioner is the correction of input current
distortion, decreasing the harmonic contents below the limits of the relevant regulations.
Therefore, this demonstration board has been tested according to the European standard
EN61000-3-2 class-D and Japanese standard JEITA-MITI class-D, at full load, at both the
nominal input voltage mains. As shown in the following images, the circuit is able to reduce
the harmonics well below the limits of both standards from full load down to light load. 70 W
of output power has been chosen because it is almost the lowest power limit at which the
harmonics must be limited according to the above mentioned standards. Measurements are
given in Figure 3, 4, 5, and 6:
Figure 3. EVL6563S-250W TM PFC:
compliance to EN61000-3-2
standard at 250 W
Figure 4. EVL6563S-250W TM PFC:
compliance to JEITA-MITI standard
at 250 W
Vin = 230 Vac - 50 Hz, Pout = 250 W, THD = 3.95 %, PF =0.985
Vin = 100 Vac - 50 Hz, Pout = 250 W, THD = 3.77 %, PF = 0.999
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Figure 5. EVL6563S-250W TM PFC:
compliance to EN61000-3-2
standard at 70 W
Figure 6. EVL6563S-250W TM PFC:
compliance to JEITA-MITI standard
at 70 W
Vin = 230 Vac - 50 Hz, Pout = 70 W, THD = 10.84 %, PF = 0.869
Vin = 100 Vac - 50 Hz, Pout = 70 W, THD = 5.4 %, PF = 0.995
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