ADDC02815DATV Просмотр технического описания (PDF) - Analog Devices

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ADDC02815DATV

28 V/100 W DC/DC Converters with Integral EMI Filter

Analog Devices 

Typical EMI Curves and Test Setup

130

CONDUCTED EMISSIONS CE–101

110

90

CE101–1 4.5 AMPS

70

50

30

0.0001

0.001

0.01

FREQUENCY – MHz

Figure 13. Conducted Emissions, MIL-STD-461D, CE101,

+28 V Hot Line 100 W Load

ADDC02812DA/ADDC02815DA

166

RE101 MIL–STD–461D

146

126

RE101–1

106

86

66

0.0001

0.001

0.01

0.1

FREQUENCY – MHz

Figure 15. Radiated Emissions, MIL-STD-461D, RE101,

100 W Load

130

CONDUCTED EMISSIONS CE–102

110

90

70

LIMIT 28VDC

50

30

0.01

0.1

1

10

FREQUENCY – MHz

Figure 14. Conducted Emissions, MIL-STD-461D, CE102,

+28 V Hot Line 100 W Load

90

RADIATED EMISSIONS RE–102

70

50

30

RE102–2

10

–30

0.01

0.1

1

10

100

1000

FREQUENCY – MHz

Figure 16. Radiated Emissions, MIL-STD-461D, RE102,

Vertical Polarity, 100 W Load

LISN

LISN

TWO METERS OF

TWISTED CABLE

1⍀

2␮F

100␮F

82nF

+VIN

+VOUT

82nF

–VIN

RETURN

CASE

0.1␮F

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 17. Schematic of Test Setup for EMI Measurements

Note: Figures 13–17 were obtained from measurements on the

ADDC02805SA, a single 5 V dc output converter. Since the

construction and topology of the dual output converters are

almost identical to the single output converter, and the compo-

nent values of the EMI differential and common filter in the

dual output converters are identical to the single output con-

verter, the subject figures are shown here as typical of the

ADDC028012DA and the ADDC02815DA converters.

REV. A

–7–

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