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

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

CMMDW Series

20 Watt Single Output

Chassis Mount DC/DC Converter

4:1 Ultra Wide Input Voltage Range

Rev B

OUTPUT VOLTAGE / CURRENT RATING CHART

Output Current

Input Current

Model Number

Input Range

Output

Voltage

Min. load Full load

Output

(4)

Eff

(4)

Capacitor

(5)

Load max

CMMDW24S3.3-5500

3.3 VDC

0mA

5500mA

60mVp-p

50mA

934mA

85%

18000uF

CMMDW24S5-4000

5 VDC

0mA

4000mA

75mVp-p

65mA

992mA

88%

9600uF

CMMDW24S12-1670

12 VDC

0mA

1670mA

75mVp-p

22mA

1018mA

86%

1650uF

CMMDW24S15-1330

24 VDC

(9-36 VDC)

15 VDC

0mA

1330mA

75mVp-p

22mA

1014mA

86%

1050uF

CMMDW48S3.3-5500

3.3 VDC

0mA

5500mA

60mVp-p

35mA

467mA

85%

18000uF

CMMDW48S5-4000

5 VDC

0mA

4000mA

75mVp-p

35mA

496mA

88%

9600uF

CMMDW48S12-1670

12 VDC

0mA

1670mA

75mVp-p

15mA

503mA

87%

1650uF

CMMDW48S15-1330

48 VDC

(18-75 VDC)

15 VDC

0mA

1330mA

75mVp-p

15mA

501mA

87%

1050uF

NOTES

1. BELLCORE TR-NWT-000332. Case 1: 50% Stress, Temperature at 40ºC (Ground fixed and controlled environment).

MIL-STD-217F Notice2 @Ta=25 ºC, Full load (Ground, Benign, controlled environment)

2. Maximum value at nominal input voltage and full load.

3. Typical value at nominal input voltage and no load.

4. Typical value at nominal input voltage and full load.

5. Test by minimum Vin and constant resistive load.

6. The ON/OFF control pin voltage is referenced to -Vin.

To order negative logic ON/OFF control add the suffix ”R” (Ex: CMMDW48S5-4000R)

7. Heat sink is optional, consult factory for ordering details.

8. Chassis Mount Options: No suffix for open frame, “U” suffix for U Channel, and “E” suffix for Enclosed type.

FED20-48S05W Derating Curve

0

20

40

60

80

100

120

-40

-20

0

20406080

100

120

AMBIENT TEMPERATURE(℃)

72

Natural convection

100LFM

200LFM

300LFM

400LFM

500LFM

105

DERATING CURVES & EFFICIENCY GRAPHS

FED20-48S05W Derating Curve

With Heatsink (Note 7 )

0

20

40

60

80

100

120

-40

-20

0

20

40

60

80

100

120

AMBIENT TEMPERATURE(℃)

Natural convection

100LFM

200LFM

300LFM

400LFM

500LFM

105

78

CMMDW48S5-4000

DERATING CURVE

CMMDW48S5-4000

DERATING CURVE

With Heatsink (Note 7)

FED20-48S05W

Efficiency VS Input Voltage

78%

80%

82%

84%

86%

88%

90%

18

24

30

36

42

48

54

60

66

72

INPUT VOLTAGE (V)

CMMDW48S5-4000

Efficiency vs Input Voltage

FED20-48S05W

Efficiency VS Output Load

45

50

55

60

65

70

75

80

85

90

95

10

20

30

40

50

60

70

80

90

100

OUTPUT LOAD (% of Full Load)

CMMDW48S5-4000

Efficiency vs Input Voltage