Rev. A

DCREDUW20 Series

Single & Dual Outputs

4:1 Input Voltage Range

20 Watt DC/DC Power Converters

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

02/26/2013

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

Page 2 of 5

SPECIFICATIONS: DCREDUW20 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

9

24

36

VDC

48VDC nominal input models

18

48

75

110VDC nominal input models

43

110

160

Input Surge Voltage (1 sec max)

24VDC nominal input models

50

VDC

48VDC nominal input models

100

110VDC nominal input models

170

Start-Up Voltage

24VDC nominal input models

9

VDC

48VDC nominal input models

18

110VDC nominal input models

43

Shutdown Voltage

24VDC nominal input models

8

VDC

48VDC nominal input models

16

110VDC nominal input models

40

Input Filter

24VDC & 48VDC nominal input models

Common choke

110VDC nominal input models

Pi filter

Input Reflected Ripple Current

Nominal Vin and full load

30

mAp-p

OUTPUT SPECIFICATIONS

Output Voltage

See Table

Line Regulation

Low line to high line at full load

Single Output

-0.2

+0.2

%

Dual Output

-0.5

+0.5

Load Regulation

No load to full load

Single Output

-0.2

+0.2

%

Dual Output

-1.0

+1.0

10% Load to 90% Load

Single Output

-0.1

+0.1

%

Dual Output

-0.8

+0.8

Cross Regulation (Dual Outputs)

Asymmetrical load 25%/100% full load

-5

+5

%

Voltage Accuracy

Full load an nominal Vin

-1.0

+1.0

%

-10

+10

%

Output Power

20

W

Output Current

See Table

Ripple & Noise (20MHz)

Measured with a 1µF/50V MLCC

See Table

Transient Response Recovery Time

25% load step change

250

µs

Start-Up Time

Nominal Vin and constant resistive

load

Power Up

30

ms

Remote On/Off

30

Minimum Load

0

%

Temperature Coefficient

-0.02

+0.02

%/°C

PROTECTION

Over Load Protection

% of full load at nominal input

150

%

Short Circuit Protection

Hiccup, automatic recovery

Over Voltage Protection

See Table

GENERAL SPECIFICATIONS

Efficiency

Nominal Vin and full load

See Table

Switching Frequency

330

KHz

Isolation Voltage

Input to Output

1600

VDC

Input to Case

1000

Output to Case

1000

Isolation Resistance

10

GΩ

Isolation Capacitance

3000

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 Vin

-0.5

+1.0

mA

Remote Off State Input Current

Nominal Vin

2.5

mA

ENVIRONMENTAL SPECIFICATIONS

With derating

-40

+101

°C

Maximum Case Temperature

+105

°C

Storage Temperature

-55

+125

°C

Relative Humidity

5

95

% RH

Thermal Shock

EN61373, MIL-STD-810F

Vibration

EN61373, MIL-STD-810F

Natural Convection

12

°C/Watt

Natural Convection with Heatsink

10

BELLCORE TR-NWT-000332

1,630,000 hours

MIL-HDBK-217F

295,000 hours

PHYSICAL SPECIFICATIONS

Weight

1.06oz (30g)

Case Material

Nickel-coated copper

Base Material

FR4 PCB

Potting Material

Silicon (UL94-V0)

Dimensions (L x W x H)

2.00 x 1.00 x 0.40 inches (50.8 x 25.4 x 10.2 mm)

Shielding

Six-sided

SAFETY & EMC CHARACTERISTICS

Safety Approvals (pending)

UL60950-1, EN60950-1, IEC60950-1, EN50155

EN55022, EN55011

24VDC & 48VDC nominal input models

Class B

110VDC nominal input models

Class A

ESD

EN61000-4-2

Air

±8KV

Perf. Criteria A

Contact

±6KV

Radiated Immunity

EN61000-4-3

20 V/m

Perf. Criteria A

EN61000-4-4

±2KV

Perf. Criteria A

EN61000-4-5

±2KV

Perf. Criteria A

Conducted Immunity

EN61000-4-6

10 Vrms

Perf. Criteria A