Rev B

DHW40 SERIES

40 Watts

DC/DC Power Converter

Single & Dual Outputs

1/9/2018

Wall Industries, Inc. • 37 Industrial Drive, Exeter, NH 03833 • Tel: 603-778-2300 • Toll Free: 888-597-9255 •

Fax 603-778-9797

website: www.wallindustries.com • e-mail: sales@wallindustries.com

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SPECIFICATIONS

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

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

SPECIFICATION

TEST CONDITIONS

Min

Typ

Max

Unit

INPUT SPECIFICATIONS

Input Voltage Range

24VDC Nominal Input Models

9

24

36

VDC

48VDC Nominal Input Models

18

48

75

Input Surge Voltage (100ms Max.)

24VDC Nominal Input Models

-0.7

50

VDC

48VDC Nominal Input Models

-0.7

100

Start-Up Threshold Voltage

24VDC Nominal Input Models

9

VDC

48VDC Nominal Input Models

18

Under Voltage Lockout

24VDC Nominal Input Models

8.3

VDC

48VDC Nominal Input Models

16.5

Input Filter

All models

Internal LC Type

OUTPUT SPECIFICATIONS

Output Voltage

See Table

Voltage Accuracy

±1.0

%Vnom

Line Regulation

Vin=Min. to Max. @Full Load

±0.5

%

Load Regulation

Min. Load to Full Load

Single Outputs

±0.5

%

Dual Outputs

±1.0

Voltage Balance

Dual Outputs, Balanced Loads

±2.0

%

Load Cross Regulation

Dual Outputs, Asymmetrical Load 25%/100% Full Load

±5.0

%

Trim Up/Down Range

% of Nominal Output Voltage

24V Models

-10

+20

%

Other Models

±10

Output Power

See Table

Output Current

See Table

Minimum Load

Single Output Models

No Minimum Load Requirement

Dual Output Models

See Table

Maximum Capacitive Load

See Table

3.3V & 5V

100

mVp-p

12V, 15V, & 24V Models

150

Dual Output Models

150

25% Load Step Change

250

µsec

Transient Response Deviation

25% Load Step Change

±3

±5

%

Start-Up Time (Power On)

Nominal Vin and Constant Resistive Load

30

ms

Temperature Coefficient

±0.02

%/ºC

REMOTE ON/OFF CONTROL

Converter On

3.5~12V or Open Circuit

Converter Off

0V~1.2V or Short Circuit

Control Input Current

On, Vctrl=5.0V

0.5

mA

Off, Vctrl=0V

-0.5

Control Common

Referenced to Negative Input

Remote OFF Input Current

Nominal Vin

2.5

mA

PROTECTION

Short Circuit Protection

24V Output Model

0.3Hz Typ. Automatic Recovery

Others

Hiccup Mode 1.5Hz Typ.

Over Load Protection

Hiccup

Circuit Limitation at 150% typ. of Iout max.

Over Voltage Protection

See Table

Over Temperature Protection

Shutdown Temperature

+110

ºC

GENERAL SPECIFICATIONS

Efficiency

See Table

Switching Frequency

24V Models

285

KHz

Other Models

320

Isolation Voltage

60 Seconds

1500

VDC

1 Second

1800

Isolation Resistance

500VDC

1000

M

Ω

Isolation Capacitance

100KHz, 1V

1500

PHYSICAL SPECIFICATIONS

Weight

1.06oz (30g)

Dimensions (L x W x H)

24V Models

2in x 1in x 0.43in (50.8mm x 25.4mm x 11mm)

Others

2in x 1in x 0.40in (50.8mm x 25.4mm x 10.2mm)

Case Material

Aluminum Alloy, Black Anodized Coating

Base Material

FR4 PCB (Flammability to UL 94V-0 Rated)

Pin Material

Copper Alloy w/ Gold Plate Over Nickel Subplate

RFI

Six-Sided Shielded, Metal Case