MDW Ultra Wide Series
Single and Dual Output
20 Watt DC/DC Converter
4:1 Wide Input Voltage Range
FEATURES
APPLICATIONS
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Output Current up to 5.5A
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Measurement
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High Efficiency up to 89%
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Wireless Network
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Fixed Switching Frequency
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Telecom/Datacom
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Six-Sided Continuous Shielding
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Industry Control System
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20 Watts Maximum Output Power
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Semiconductor Equipment
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4:1 Ultra Wide Input Voltage Range
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Standard 2.0 x 1.0 x 0.4 Inch Package
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Options: Negative Logic Remote ON/OFF
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Compliant to RoHS EU Directive 2002/95/EC
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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
Input Voltage Range ............ 24V nominal input .......................... 9-36VDC
48V nominal input ........................ 18-75VDC
Input Filter ....................................................................................... Pi Type
Input Voltage Variation......... dv/dt ............................................ 5V/ms max
(Complies with ETS300 132 part 4.4)
Input Surge Voltage (100ms max) ....... 24V input ...........................50VDC
48V input .........................100VDC
Input Reflected Ripple Current (nominal Vin and full load) ...........20mAp-p
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
(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 Input Current (nominal Vin) ...........................................2.5mA
PROTECTION SPECIFICATIONS
Over Voltage Protection ...........3.3V output .......................................... 3.9V
(zener diode clamp)
5V output .......................................... 6.2V
12V output ........................................... 15V
15V output ........................................... 18V
Over Load Protection (% of full load at nominal input) ................. 150% typ.
Short Circuit Protection...................................... Hiccup, automatic recovery
GENERAL SPECIFICATIONS
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 ...............................................................10 ohms min.
Isolation Capacitance .............................................................. 1500pF max.
Case Grounding .................... Connect case to –Vin with decoupling Y Cap
9
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature ................................. -40°C ~ +66°C (w/o derating)
+66°C ~ +105°C (w/ derating)
Storage Temperature .......................................................... -55°C ~ +125°C
Maximum Case Temperature ............................................................. 105°C
Relative Humidity...................................................................5% to 95% RH
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
MTBF (Note 1)............BELLCORE TR-NWT-000332..........1.691 X 10 hrs
5
MIL-STD-217F ................................. 5.629 x 10 hrs
6
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.
Line Regulation (LL to HL at FL).................. Single.......................... ±0.2%
Dual ............................ ±0.5%
Load Regulation (no load to full load) .......... Single.......................... ±0.5%
Dual ............................... ±1%
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
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
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
WALL [ WALL INDUSTRIES,INC. ]
