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

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

CMMMW Series

4:1 Input Voltage Ranges

18~30 Watt, Single Output

Chassis Mount DC/DC Converter

Rev A

BLOCK DIAGRAM

INPUT VOLTAGE TRANSIENT RATING

10uS

150

140

130

120

110

100

90

80

70

60

100uS

1mS

10mS

100mS

50

40

30

20

10

0

48VDC Input Models

24VDC Input Models

EFFICIENCY GRAPHS

Efficiency vs Input Voltage (Single Output)

Efficiency vs Output Load (Single Output)

Input Voltage (V)

Nom

Low

High

50

60

70

80

90

100

Load Current (%)

100

60

40

20

10

80

30

40

50

60

70

80

90

100

DERATING CURVE

¡ã

0

20

40

60

80

100

-40

50

60

80

100

110

90

70

400LFM

200LFM

100LFM

Natural

convection

Ambient Temperature (°C)

~

Single Output

+Vo

PWM

Isolation

Ref.Amp

LC

Filter

+Vin

-Vin

-Vo

On/Off

Trim

OVP

OTP

OVP