EVL6566B-65W-QR STMicroelectronics, EVL6566B-65W-QR Datasheet - Page 23

• Manufacturer Part Number: EVL6566B-65W-QR
• Description: BOARD EVAL SMPS FOR L6566B
• Manufacturer: STMicroelectronics
• Type: Power Factor Correctionr

Specifications of EVL6566B-65W-QR

• Main Purpose: AC/DC, Primary Side
• Outputs And Type: 1, Isolated
• Power - Output: 65W
• Voltage - Output: 700V
• Voltage - Input: 8 ~ 23 V
• Regulator Topology: Flyback
• Frequency - Switching: 100kHz
• Board Type: Fully Populated
• Utilized Ic / Part: L6566B
• Input Voltage: 90 V to 265 V
• Output Voltage: 1.8 V to 12 V
• Board Size: 150 mm x 75 mm
• Product: Power Management Modules
• Dimensions: 150 mm x 75 mm
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption
• Current - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: L6566B
• Other names: 497-10165

AN2749
4
Conducted noise measurements
The following pictures are the conducted noise measurements at full load and 230 Vac
mains voltage, taken on phase wire with quasi peak detection.
measurement without frequency jittering. The limits shown on the diagrams are EN55022
CLASS B, which is the most common rule for video domestic equipment, such as a set-top
box. As visible on the diagram there is a good margin of the measures with respect to the
QP limits but the measurement exceeds the average measurement limit.
Figure 32. EVL6566B-40WSTB conducted noise measurement phase A without
Figure 33
reduction of noise peak obtained using the FMOD pin function is clearly visible. Just by
adding a resistor and a capacitor, a 400 Hz modulating frequency and ±5 kHz of switching
frequency variation is applied. The conducted noise has been measured in all conditions at
different mains voltages on both mains wires with similar results.
Figure 33. EVL6566B-40WSTB conducted noise measurement phase A with
shows the same application board implementing frequency modulation. The
frequency jittering
frequency jittering
Doc ID 14630 Rev 2
Conducted noise measurements
Figure 32
shows the
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