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

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

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DBW Series

Single and Dual Outputs

40 Watt DC/DC Converter

4:1 Ultra Wide Input Voltage Range

Rev C

FEATURES

● High Efficiency up to 88%

● RoHS Directive Compliant

● Fixed Switching Frequency

● Six-Sided Continuous Shield

● Standard 2” x 2” x 0.4” Package

● Options: Negative Remote ON/OFF

● 4:1 Ultra Wide Input Voltage Range

● ISO9001 Certified Manufacturing Facilities

● UL60950-1, EN60950-1, and IEC60950-1 Licensed

● CE Mark Meets 2006/95/EC, 93/68/EEC, and 2004/108/EC

DESCRIPTION

The DBW series of DC/DC converters offers 40 Watts of output power in a 2 x 2 x 0.4 inch package. The DBW series has a 4:1 ultra wide

input range of 9-36VDC or 18-75VDC. This series also offers single and dual output models. Some features include 1600VDC isolation,

positive or negative remote on/off, and six-sided shielding. All models are short circuit, over voltage, over load, and over temperature

protected. Heatsinks are also available, please call factory for ordering details

.

SPECIFICATIONS: DBW Series

All specifications apply @ 25°C ambient unless otherwise noted

INPUT SPECIFICATIONS

Input Voltage Range ............ 24V nominal input ........................ 9 - 36VDC

48V nominal input ...................... 18 - 75VDC

Input Filter ....................................................................................... Pi Type

Input Surge Voltage (100ms max) ............... 24V input ...................50VDC

48V input .................100VDC

Input Reflected Ripple Current (nominal Vin and FL) ...................20mAp-p

Start Up Time (nominal Vin and constant resistive load)

Power Up.............................................................................20ms, max.

Remote ON/OFF .................................................................20ms, max.

Start-Up Voltage .................. 24V nominal input ................................9VDC

48V nominal input ..............................18VDC

Shutdown Voltage ................ 24V nominal input ................................8VDC

48V nominal input ..............................16VDC

Positive Logic ................. DC-DC ON ................Open or 3V < Vr < 12V

DC-DC OFF .............Short or 0V < Vr < 1.2V

Negative Logic................ DC-DC ON ...............Short or 0V < Vr < 1.2V

DC-DC OFF ..............Open or 3V < Vr < 12V

Input Current of Remote Control Pin (nominal Vin) .......... -0.5mA~+0.5mA

Remote Off State Input Current ........... 24V nominal input................ 10mA

48V nominal input.................. 5mA

OUTPUT SPECIFICATIONS

Output Voltage ..............................................................................see table

Voltage Accuracy (nom Vin and full load) ........................................... ±1%

Output Current ..............................................................................see table

Output Power ....................................................................... 40 watts, max.

Line Regulation (LL to HL at FL) ....................................................... ±0.2%

(min. load to full load)

Dual Output ................... ±1%

Transient Response Recovery Time................................................. 250µs

(25% load step change)

PROTECTION SPECIFICATIONS

Over Voltage Protection ................................... 3.3V Output................. 3.9V

(Zener diode clamp)

5V Output.................... 6.2V

12V Output................... 15V

15V Output................... 18V

±12V Output............... ±15V

±15V Output............... ±18V

Over Load Protection (% of FL at nominal input) ...................... 150%, max.

Short Circuit Protection...................................... Hiccup, automatic recovery

Over Temperature Protection ......................................................110°C, typ.

GENERAL SPECIFICATIONS

Efficiency ........................................................................................see table

Switching Frequency ................................................................300KHz, typ.

Isolation Voltage

Input to Output .................................................................. 1600VDC, min.

Input to Case .................................................................... 1600VDC, min.

Output to Case.................................................................. 1600VDC, min.

Case Grounding .......................connect case to -Vin with decoupling Y cap

Isolation Resistance .....................................................................10

Isolation Capacitance ............................................................ 2500pF, max.

ENVIRONMENTAL SPECIFICATIONS

Operating Ambient Temperature ............. -40°C to +50°C (without derating)

+50°C to +105°C (with derating)

Storage Temperature .......................................................... -55°C ~ +125°C

Maximum Case Temperature ........................................................... +105°C

Relative Humidity...................................................................5% to 95% RH

Temperature Coefficient .................................................. ±0.02% / °C, max.

Without Heat-Sink.............................................................. 9.2°C / Watt

With Heat-Sink................................................................... 7.6°C / Watt

Thermal Shock ..................................................................... MIL-STD-810F

Vibration ................................................................................MIL-STD-810F

MIL-STD-217F ............................. 1.511 x 10

UL

TUV

CB

CE MARK

APPLICATIONS

● Telecom/Datacom

● Wireless Networks

● Measurement Equipment

● Industry Control Systems

● Semiconductor Equipment