AN3065 datasheet(10/33 Pages) STMICROELECTRONICS

10 / 33 page

Test results and significant waveforms

AN3065

10/33

Doc ID 16279 Rev 2

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.

The circuit is able to reduce the harmonics well below the limits of both regulations from full

load down (measurements are shown in

Figure 3 and 4) to light load. Please note that all

measures and waveforms have been done using a Pi-filter for filtering the noise coming from

the circuit, using a 20 mH common-mode choke and two 470NF-X2 filter capacitors.

Figure 3.

EVL6563S-100W TM PFC:

compliance to EN61000-3-2

standard

Figure 4.

EVL6563S-100W TM PFC:

compliance to JEITA-MITI standard

Vin = 230 Vac - 50 Hz

Pout = 100 W

THD = 2.31 %

PF = 0.982

Vin = 100 Vac - 50 Hz

Pout = 100 W

THD = 2.30 %

PF = 0.999

AN3065 Arkusz danych(PDF) 10 Page - STMicroelectronics