Rev. D

JR Series

Single & Dual Outputs

2:1 Input Voltage Ranges

10 Watt DC/DC Power Converters

Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833

04/20/2012

603-778-2300 www.wallindustries.com Fax 603-778-9797

Page 4 of 5

CHARACTERISTICS

-40

-20

0

20

40

60

80

100

120

77.2

120

100

80

60

40

20

0

JR48S5-2000 Derating Curve

-40

-20

0

20

40

60

80

100

120

81

120

100

80

60

40

20

0

JR48S5-2000 Derating Curve with Heatsink

36

40

44

48

52

56

60

64

68

72

75

90

85

80

75

70

65

60

JR48S5-2000 Efficiency vs Input Voltage

10

20

30

40

50

60

70

80

90

100

90

85

80

75

70

65

60

JR48S5-2000 Efficiency vs Output Load

EMI FILTER

Recommended Filter for EN55022 Class B Compliance

Recommended EN55022 Class B Filter Circuit Layout

+INPUT

-INPUT

C1

C2

L1

C3

C4

LOAD

+Vin

+Vout

-Vin

-Vout

DC/DC

CONVERTER

The components used in the figure above are as follows:

Model

C1

C2

C3

C4

L1

12VDC

nominal input

3.3µF/50V

1812 MLCC

N/A

1000P/2KV

MLCC

1000P/2KV

MLCC

325µH

Common Choke

PMT-050

24VDC

nominal input

2.2µF/50V

1812 MLCC

N/A

1000P/2KV

MLCC

1000P/2KV

MLCC

325µH

Common Choke

PMT-050

48VDC

nominal input

2.2µF/100V

1812 MLCC

2.2µF/100V

1812 MLCC

1000P/2KV

MLCC

1000P/2KV

MLCC

325µH

Common Choke

PMT-050