Rev. A

DH40 Series

Single & Dual Outputs

2:1 Wide Input Ranges

40 Watt DC/DC Power Converters

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

10/31/2012

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

Page 2 of 13

SPECIFICATIONS: DH40 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

Typ

Max

Unit

INPUT SPECIFICATIONS

12VDC nominal input models

9

12

18

24VDC nominal input models

18

24

36

Input Voltage Range

48VDC nominal input models

36

48

75

VDC

12VDC nominal input models

-0.7

25

24VDC nominal input models

-0.7

50

Input Surge Voltage (1s max.)

48VDC nominal input models

-0.7

100

VDC

12VDC nominal input models

9

24VDC nominal input models

18

Start-up Threshold Voltage

48VDC nominal input models

36

VDC

12VDC nominal input models

8.3

24VDC nominal input models

16.5

Under Voltage Lockout (UVLO)

48VDC nominal input models

33

VDC

Power Up

30

Start-up Time

Remote On/Off

Nominal Vin and constant resistive load

30

ms

Input Current

See Table

See Table

Internal Filter

for EN55022 Class A compliance see page 3

LC Filter

12VDC nominal input models

8000mA slow-blow type

24VDC nominal input models

4000mA slow-blow type

48VDC nominal input models

2000mA slow-blow type

Short Circuit Current

Hiccup mode 1.5Hz typ.

OUTPUT SPECIFICATIONS

Output Voltage

See Table

Output Voltage Balance

Dual Output Models, Balanced loads

±2.0

%

Line Regulation

Low line to high line at full load

±0.5

%

Single Output Models

±0.5

Load Regulation

Dual Output Models

Minimum load to full load

±1.0

%

Load Cross Regulation (Dual Output Models)

Asymmetrical load 25% / 100% full load

±5.0

%

Output Voltage Setting Accuracy

At 50% load and nominal Vin

±1.0

%Vnom

% of nominal output voltage

±10

%

Output Power

See Table

Output Current

See Table

Single Output Models

No minimum load required

Minimum Load

Dual Output Models

See Table

3.3 & 5VDC Output Models

100

12, 15, & 24VDC Output Models

150

Measured with a 1µF M/C

and a 10µF T/C in parallel

Dual Output Models

150

mVp-p

25% load step change

250

µs

Temperature Coefficient

±0.02

%/°C

PROTECTION

Input Polarity Protection

none

See Table

Over Load Protection

Current limitation at 150% typ. of Io max., hiccup

Thermal Protection

Shutdown temperature

110

°C

Short Circuit Protection

Hiccup, automatic recovery

Converter On

3.5~12V or open circuit

Positive Logic

Converter Off

0V ~ 1.2 or short circuit

On

Vctrl = 5.0V

0.5

Control Input Current

Off

Vctrl = 0V

-0.5

mA

Control Common

Referenced to negative input

Stand-by Input Current

Nominal Vin

2.5

mA