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AN3329 датащи(PDF) 11 Page - STMicroelectronics

номер детали AN3329
подробное описание детали  This application note describes the characteristics and features
PDF  47 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3329 датащи(HTML) 11 Page - STMicroelectronics

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AN3329
Harmonic content measurement
Doc ID 18376 Rev 1
11/47
3
Harmonic content measurement
The main purpose of a PFC pre-regulator is the input current shaping to reduce the
harmonic content below the limits of the relevant regulations. 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 and 75 W input power, at both the nominal input
voltage mains. Figure 7 to Figure 10 show the test results. Note that the PFC stage operates
properly as it effectively reduces harmonics well below the limits of both regulations in all
conditions. Total harmonic distortion and power factor values are reported below in each
diagram.
Figure 7.
EN61000-3-2 compliance at 230 Vac
- 50 Hz, full load
Figure 8.
JEITA-MITI compliance at
100 Vac - 50 Hz, full load
Vin=230 Vac - 50 Hz, Pin=191 W
THD=4.52 %, PF=0.982
Vin=100 Vac - 50 Hz, Pin=191 W
THD=3.97 %, PF=0.999
Figure 9.
EN61000-3-2 compliance at
230 Vac - 50 Hz, 75 W
Figure 10.
JEITA-MITI compliance at
100 Vac - 50 Hz, 75 W
Vin=230 Vac - 50 Hz, Pin=75 W
THD=7.15 %, PF=0.867
Vin=100 Vac - 50 Hz, Pin=75 W
THD=5.66 %, PF=0.999



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