ADDC02828SA–Typical EMI Curves and Test Setup

REV. 0

–6–

RETURN

CASE

LISN

1/4

Ω

0.1µF

GROUND PLANE

82nF

82nF

2µF

1

Ω

100µF

TWO METERS OF

TWISTED CABLE

NOTE: 100µF CAPACITOR AND 1

Ω RESISTOR PROVIDE STABILIZATION FOR 100µH DIFFERENTIAL SOURCE INDUCTANCE

INTRODUCED BY THE LISNs. REFER TO SECTION ON EMI CONSIDERATIONS FOR MORE INFORMATION.

LISN

Figure 15. Schematic of Test Setup for EMI Measurements

FREQUENCY – MHz

130

0.01

0.0001

0.001

70

90

30

110

50

CONDUCTED EMISSIONS CE–101

CE101–1 4.5 AMPS

Figure 11. Conducted Emissions, MIL-STD-461D, CE101,

+28 V Hot Line 100 W Load

FREQUENCY – MHz

130

10

0.01

0.1

70

90

30

110

50

1

CONDUCTED EMISSIONS CE–102

LIMIT 28VDC

Figure 12. Conducted Emissions, MIL-STD-461D, CE102,

+28 V Hot Line 100 W Load

FREQUENCY – MHz

166

0.1

0.0001

0.001

106

126

66

146

86

0.01

RE101 MIL–STD–461D

RE101–1

Figure 13. Radiated Emissions, MIL-STD-461D, RE101,

100 W Load

FREQUENCY – MHz

90

10

0.01

0.1

30

50

–30

70

10

1

100

1000

RADIATED EMISSIONS RE–102

RE102–2

Figure 14. Radiated Emissions, MIL-STD-461D, RE102,

Vertical Polarity, 100 W Load

Note: Figures 11–15 were obtained from measurements on the ADDC02805SA, a single 5 V dc output converter. Since the con-

struction and topology of the ADDC02828SA is almost identical to the ADDC02805SA, and the component values of the EMI

differential and common-mode filter in the ADDC02828SA are identical to the ADDC02805SA, the subject figures are shown here

as typical of the ADDC02828SA.