ADDC02808PB–Typical EMI Curves & Test Setup for 28 V
IN
, 5 V dc Out, 100 W Converter
130
CONDUCTED EMISSIONS CE101
166
RE101 MIL-STD-461D
110
EMISSION LEVEL – dB
EMISSION LEVEL – dB/pT
146
V
90
CE101–1 4.5 AMPS
70
126
RE101–1
106
50
86
30
0.0001
0.001
FREQUENCY – MHz
0.01
66
0.0001
0.01
0.001
FREQUENCY – MHz
0.1
Figure 11. Conducted Emissions, MIL-STD-461D, CE101,
+28 V Hot Line 100 W Load
Figure 13. Radiated Emissions, MIL-STD-461D, RE101,
100 W Load
130
CONDUCTED EMISSIONS CE102
110
90
RADIATED EMISSIONS RE102
70
EMISSION LEVEL – dB V/m
EMISSION LEVEL – dB V
90
50
70
LIMIT 28VDC
50
30
RE102–2
10
30
0.01
1
0.1
FREQUENCY – MHz
10
–30
0.01
0.1
1
10
FREQUENCY – MHz
100
1000
Figure 12. Conducted Emissions, MIL-STD-461D, CE102,
+28 V Hot Line 100 W Load
Figure 14. Radiated Emissions, MIL-STD-461D, RE102,
Vertical Polarity, 100 W Load
+V
IN
LISN
LISN
1
100 F
82nF
2 F
82nF
–V
IN
TWO METERS OF
TWISTED CABLE
CASE
+V
OUT
0.1 F
RETURN
1/4
GROUND PLANE
NOTE: 100 F CAPACITOR AND 1 RESISTOR PROVIDE STABILIZATION FOR 100 H DIFFERENTIAL SOURCE INDUCTANCE
INTRODUCED BY THE LISNs. REFER TO SECTION ON EMI CONSIDERATIONS FOR MORE INFORMATION.
Figure 15. Schematic of Test Setup for EMI Measurements
–6–
REV. A
AD [ ANALOG DEVICES ]
