MDW Ultra Wide Series
Single and Dual Output
20 Watt DC/DC Converter
4:1 Wide Input Voltage Range
FEATURES
APPLICATIONS
● Output Current up to 5.5A
● Measurement
● High Efficiency up to 89%
● Wireless Network
● Fixed Switching Frequency
● Telecom/Datacom
● Industry Control System
● Semiconductor Equipment
● Six-Sided Continuous Shielding
● 20 Watts Maximum Output Power
● 4:1 Ultra Wide Input Voltage Range
● Standard 2.0 x 1.0 x 0.4 Inch Package
● Options: Negative Logic Remote ON/OFF
● Compliant to RoHS EU Directive 2002/95/EC
● CE Mark Meets 2006/95/EC, 93/68/EEC, and 89/336 EEC
SPECIFICATIONS: MDW Ultra Wide Series
All specifications apply @ 25°C ambient unless otherwise noted
INPUT SPECIFICATIONS
PROTECTION SPECIFICATIONS
Input Voltage Range ............ 24V nominal input.......................... 9-36VDC
Over Voltage Protection ...........3.3V output..........................................3.9V
48V nominal input........................ 18-75VDC
(zener diode clamp)
5V output..........................................6.2V
12V output...........................................15V
15V output...........................................18V
Input Filter....................................................................................... Pi Type
Input Voltage Variation......... dv/dt............................................ 5V/ms max
(Complies with ETS300 132 part 4.4)
Over Load Protection (% of full load at nominal input)................. 150% typ.
Short Circuit Protection......................................Hiccup, automatic recovery
Input Surge Voltage (100ms max) ....... 24V input ...........................50VDC
48V input .........................100VDC
GENERAL SPECIFICATIONS
Input Reflected Ripple Current (nominal Vin and full load)...........20mAp-p
Efficiency ........................................................................................see table
Switching Frequency .................................................................400KHz typ.
Isolation Voltage (Input to Output).........................................1600VDC min.
Isolation Voltage (Input to case)............................................1600VDC min.
Isolation Voltage (Output to Case) ........................................1600VDC min.
Isolation Resistance ...............................................................109 ohms min.
Isolation Capacitance .............................................................. 1500pF max.
Case Grounding .................... Connect case to –Vin with decoupling Y Cap
Start Up Time (nominal Vin and constant resistive load)
Power Up................................................................................20ms typ.
Remote ON/OFF ....................................................................20ms typ.
Start Up Voltage................... 24V input.............................................9 VDC
48V input...........................................18 VDC
Shutdown Voltage................ 24V input .........................................7.5 VDC
48V input ..........................................15 VDC
Remote ON/OFF (Note 6)
(Positive Logic)............... DC-DC ON................Open or 3V < Vr < 12V
DC-DC OFF.............Short or 0V < Vr < 1.2V
ENVIRONMENTAL SPECIFICATIONS
(Negative Logic) ............. DC-DC ON...............Short or 0V < Vr < 1.2V
DC-DC OFF..............Open or 3V < Vr < 12V
Operating Temperature ................................. -40°C ~ +66°C (w/o derating)
+66°C ~ +105°C (w/ derating)
Input Current of Remote Control Pin (nominal Vin) ........-0.5mA ~ +0.5mA
Remote Off Input Current (nominal Vin) ...........................................2.5mA
Storage Temperature ..........................................................-55°C ~ +125°C
Maximum Case Temperature............................................................. 105°C
Relative Humidity...................................................................5% to 95% RH
OUTPUT SPECIFICATIONS
Output Voltage..............................................................................see table
Voltage Accuracy (nominal Vin and full load) ...................................... ±1%
Voltage Adjustability............................................................................. 10%
Output Current ..............................................................................see table
Output Power........................................................................ 20 watts max.
Thermal Impedance (Note 7)
Natural Convection.............................................................12°C / Watt
Natural Convection with Heat-Sink.....................................10°C / Watt
Thermal Shock ..................................................................... MIL-STD-810F
Vibration ................................10~55Hz, 10G, 30 minutes along X, Y, and Z
Line Regulation (LL to HL at FL).................. Single.......................... ±0.2%
Dual ............................ ±0.5%
MTBF (Note 1)............BELLCORE TR-NWT-000332..........1.691 X 106 hrs
MIL-STD-217F ................................. 5.629 x 105 hrs
Load Regulation (no load to full load) .......... Single.......................... ±0.5%
Dual ............................... ±1%
PHYSICAL SPECIFICATIONS
Weight ..................................................................................... 27g (0.95 oz)
Dimensions....................... 2.0 x 1.0 x 0.40 inches (50.8 x 25.4 x 10.2 mm)
Case Material ..............................................................Nickel-coated copper
Base Material................................................FR4 PCB (Effective July 2008)
Potting material..................................................................Epoxy (UL94-V0)
Shielding......................................................................................... six-sided
Cross Regulation (Dual) (Asymmetrical load 25% / 100% FL) ............ ±5%
Minimum Load ....................................................................................... 0%
Ripple/Noise (20 MHz BW)...........................................................see table
(measured with a 0.1uF/50V MLCC)
Temperature Coefficient ................................................. ±0.02% / °C max.
Transient Response Recovery Time (25% load step) .......................250us
Due to advances in technology, specifications subject to change without notice
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
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