EVL170W-FTV STMicroelectronics, EVL170W-FTV Datasheet - Page 11

• Manufacturer Part Number: EVL170W-FTV
• Description: DEMO BOARD VIPER27 L6599A L6564
• Manufacturer: STMicroelectronics
• Series: VIPER™r

Specifications of EVL170W-FTV

• Main Purpose: Power Supply with PFC
• Outputs And Type: 2, Isolated
• Power - Output: 170W
• Voltage - Output: 24V, 12V, 5V
• Current - Output: 6A, 2A, 2A
• Voltage - Input: 90 ~ 264VAC
• Regulator Topology: Flyback
• Frequency - Switching: 130kHz
• Board Type: Fully Populated
• Utilized Ic / Part: Viper27LN, L6564, L6599A
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-11254

AN3329
3
Figure 7.
Figure 9.
Vin=230 Vac - 50 Hz, Pin=191 W
THD=4.52 %, PF=0.982
Vin=230 Vac - 50 Hz, Pin=75 W
THD=7.15 %, PF=0.867
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.
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.
EN61000-3-2 compliance at 230 Vac
- 50 Hz, full load
EN61000-3-2 compliance at
230 Vac - 50 Hz, 75 W
Figure 7
to
Figure 10
Doc ID 18376 Rev 1
show the test results. Note that the PFC stage operates
Figure 8.
Figure 10. JEITA-MITI compliance at
Vin=100 Vac - 50 Hz, Pin=191 W
THD=3.97 %, PF=0.999
Vin=100 Vac - 50 Hz, Pin=75 W
THD=5.66 %, PF=0.999
JEITA-MITI compliance at
100 Vac - 50 Hz, full load
100 Vac - 50 Hz, 75 W
Harmonic content measurement
11/47