Rev B

DCQEB50 Series

50W, Single Outputs

Quarter-Brick Package

DC/DC Power Converters

Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833

03/09/2012

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

Page 2 of 5

SPECIFICATIONS: DCQEB50 SERIES

All specifications are based on 25°C, Nominal Input Voltage, and Maximum Output Current unless otherwise noted.

We reserve the right to change specifications based on technological advances.

SPECIFICATION

TEST CONDITIONS

Min

Nom

Max

Unit

INPUT SPECIFICATIONS

Input Voltage Range

24VDC nominal input models

18

24

36

VDC

48VDC nominal input models

36

48

75

Start-up Voltage

24VDC nominal input models

18

VDC

48VDC nominal input models

36

Shutdown Voltage

24VDC nominal input models

15

VDC

48VDC nominal input models

32

Input Surge Voltage

24VDC nominal input models

100ms

50

VDC

48VDC nominal input models

100

Input Current

See Table

Input Filter

L-C Type

OUTPUT SPECIFICATIONS

Output Voltage

See Table

Line Regulation

Low line to high line at full load

-0.2

+0.2

%

Load Regulation

No load to full load

-0.3

+0.3

%

Voltage Accuracy

-1.5

+1.5

%

-20

+10

%

Output Power

See Table

Output Current

See Table

Minimum Load

0

%

Ripple & Noise

Measured at nominal input and full load with 20MHz BW and

1µF M/C and 10µF T/C capacitors in parallel.

100

mVp-p

Transient Response Recovery Time

25% load step change

200

µs

Start-Up Time

Power Up

Nominal input and constant resistive load

25

ms

Remote ON/OFF

25

ms

10

% Vo

Temperature Coefficient

-0.02

+0.02

%/°C

PROTECTION

Over Voltage Protection Threshold

Non-latching Hiccup

120

% Vo

Over Current Protection Threshold

110

140

% Io

Short Circuit Protection

Hiccup, automatic recovery

Over Temperature Protection

+110

°C

GENERAL SPECIFICATIONS

Efficiency

Nominal input and full load

See Table

Switching Frequency

243

270

297

KHz

Isolation Voltage

Input to Output

For 1 minute

1600

VDC

Input to Base-plate

For 1 minute

1000

VDC

Output to Base-plate

For 1 minute

1000

VDC

Isolation Resistance

10

M

Ω

Isolation Capacitance

2500

pF

Positive Logic (standard)

DC/DC ON

Open or 3V < Vr < 15V

DC/DC OFF

Short or 0V < Vr < 1.2V

Negative Logic (optional)

DC/DC ON

Short or 0V < Vr < 1.2V

DC/DC OFF

Open or 3V < Vr < 15V

Input Current of Remote Control Pin

Nominal input

-0.5

1

mA

Remote Off Input Current

Nominal input

2.5

mA

ENVIRONMENTAL SPECIFICATIONS

-40

+100

°C

Storage Temperature

-55

+125

°C

Relative Humidity

Non-condensing

5

95

% RH

Thermal Shock

MIL-STD-810F

Vibration

MIL-STD-810F

BELLCORE TR-NWT-000332

2,500,000

Hours

MIL-HDBK-217F

356,800

Hours

PHYSICAL SPECIFICATIONS

Weight

1.46oz (42g)

Dimensions (L x W x H)

2.28 x 1.45 x 0.50 inches (57.9 x 36.8 x 12.7 mm)

Case Material

Aluminum base-plate

SAFETY & EMC CHARACTERISTICS

Safety Approvals

UL60950-1, IEC60950-1, EN60950-1

(DCQEB50-48S1.8, 48S2.5, 48S3.3, and 48S05 have approvals; approvals pending for all other models)

EN55022

Class A

Radiated Immunity

EN61000-4-3

10 V/m

Perf. Criteria A

EN61000-4-4

±2KV

Perf. Criteria B

EN61000-4-5

±1KV

Perf. Criteria B

Conducted Immunity

EN61000-4-6

10 Vrms

Perf. Criteria A