Rev. C

DC100 Series

2:1 Input Voltage Ranges

Up to 100 Watts, Single Outputs

Half-Brick DC/DC Power Converters

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

10/23/2012

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

Page 5 of 8

DERATING CURVES

Natural Convection (20LFM)

100LFM

200LFM

300LFM

400LFM

500LFM

Natural Convection (20LFM)

100LFM

200LFM

300LFM

400LFM

500LFM

Natural Convection (20LFM)

100LFM

200LFM

300LFM

400LFM

500LFM

120

100

80

60

40

20

0

120

100

80

60

40

20

0

120

100

80

60

40

20

0

-40

20

40

60

80

100

120

-40

20

40

60

80

100

120

-40

20

40

60

80

100

120

Ambient Temperature (°C)

Ambient Temperature (°C)

Ambient Temperature (°C)

DC100-48S05 Derating Curve

DC100-48S05 Derating Curve

With 0.24” Height Heatsink (See Note 9)

DC100-48S05 Derating Curve

With 0.45” Height Heatsink (See Note 9)

EFFICIENCY GRAPHS

60.0

62.5

65.0

67.5

70.0

72.5

75.0

77.5

80.0

82.5

85.0

87.5

90.0

92.5

95.0

10

20

30

40

50

60

70

80

90

100

Vin = 18V

Vin = 24V

Vin = 48V

Vin = 75V

79.00

80.25

81.50

82.75

84.00

85.25

86.50

87.75

89.00

90.25

91.50

92.75

94.00

36

40

44

48

52

56

60

64

68

72

75

Iout = 100% F.L.

Iout = 50% F.L.

Iout = 25% F.L.

Input Voltage (VDC)

% of Full Load

DC100-48S05 Efficiency vs Input Voltage

DC100-48S05 Efficiency vs Output Load

OUTPUT VOLTAGE ADJUSTMENT

Output is adjustable for 10% trim up or -20% trim down of nominal output voltage by connecting an external resistor between

the TRIM pin and either the +SENSE or -SENSE pins. With an external resistor between the TRIM and -SENSE pin, the

output voltage set decreases. With an external between the TRIM and -SENSE pin, the output voltage set point increases.

Maximum output deviation is +10% inclusive of remote sense. The value of the external resistor can be obtained by the

equations below. The external TRIM resistor needs to be at least 1/8W resistor.

TRIM UP

TRIM DOWN





















K

2

%

100

 































K

V

R

OUT

U

%

%

2

100

%

225

.

1

%

100