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
●
Six-Sided Continuous Shielding
●
Industry Control System
●
20 Watts Maximum Output Power
●
Semiconductor Equipment
●
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
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
MDW Ultra Wide Series
Single and Dual Output
20 Watt DC/DC Converter
4:1 Wide Input Voltage Range
SAFETY & EMC
Safety Standard Pending ................. IEC60950-1, UL60950-1, EN60950-1
EMI (See Note 8) ............... EN55022............................................. Class A
ESD.................... EN61000-4-2……..
Air
± 8KV
……Perf. Criteria B
Contact ± 6KV
Radiated Immunity........... EN61000-4-3……………10V/m Perf. Criteria A
Fast Transient.................. EN61000-4-4 ................... ±2KV Perf. Criteria B
Surge (See Note 9).......... EN61000-4-5……………..±1KV Perf. Criteria B
Conducted Immunity…… EN61000-4-6……….…10 Vrms Perf. Criteria A
OUTPUT VOLTAGE / CURRENT RATING CHART
Model Number
MDW24S3.3-5500
MDW24S5-4000
MDW24S12-1670
MDW24S15-1330
MDW24D5-2000
MDW24D12-833
MDW24D15-667
MDW48S3.3-5500
MDW48S5-4000
MDW48S12-1670
MDW48S15-1330
MDW48D5-2000
MDW48D12-833
MDW48D15-667
Input
Range
Output
Voltage
3.3 VDC
5 VDC
12 VDC
15 VDC
±5 VDC
±12VDC
±15VDC
3.3 VDC
5 VDC
12 VDC
15 VDC
±5 VDC
±12VDC
±15VDC
Output Current
Min. load Full load
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
0mA
5500mA
4000mA
1670mA
1330mA
±2000mA
±833mA
±667mA
5500mA
4000mA
1670mA
1330mA
±2000mA
±833mA
±667mA
Output
(4)
Ripple & Noise
60mVp-p
75mVp-p
75mVp-p
75mVp-p
100mVp-p
100mVp-p
100mVp-p
60mVp-p
75mVp-p
75mVp-p
75mVp-p
100mVp-p
100mVp-p
100mVp-p
Input Current
Capacitor
(5)
Efficiency
(4)
Load max
No load
(3)
Full load
(2)
50mA
65mA
22mA
22mA
55mA
30mA
30mA
35mA
35mA
15mA
15mA
35mA
17mA
17mA
934mA
992mA
1018mA
1014mA
992mA
1004mA
1005mA
467mA
496mA
503mA
501mA
490mA
496mA
496mA
85%
88%
86%
86%
88%
87%
87%
85%
88%
87%
87%
89%
88%
88%
18000uF
9600uF
1650uF
1050uF
±4800uF
±825uF
±525uF
18000uF
9600uF
1650uF
1050uF
±4800uF
±825uF
±525uF
24 VDC
(9-36 VDC)
48 VDC
(18-75 VDC)
NOTES
1.
2.
3.
4.
5.
6.
7.
8.
9.
BELLCORE TR-NWT-000332. Case 1: 50% Stress, Temperature at 40ºC (Ground fixed and controlled environment).
MIL-STD-217F Notice2 @Ta=25 ºC, Full load (Ground, Benign, controlled environment)
Maximum value at nominal input voltage and full load.
Typical value at nominal input voltage and no load.
Typical value at nominal input voltage and full load.
Test by minimum Vin and constant resistive load.
The ON/OFF control pin voltage is referenced to -Vin.
To order negative logic ON/OFF control add the suffix ”R” (Ex: MDW48S5-4000R)
Heat sink is optional, consult factory for ordering details.
The MDW Series can meet EN55022 Class A with an external capacitor in parallel with the input pins.
Recommended: 24Vin: NA.
48Vin: 1µF/100V
An external filter capacitor is required if the module has to meet EN61000-4-5. The filter capacitor Wall Industries suggests: Nippon chemi-con
KY Series, 220uF/100V, ESR 48mΩ.
DERATING CURVES & EFFICIENCY GRAPHS
O U T P U T P O W E R (% )
120
100
80
60
40
20
0
-40
Natural convection
FED20-48S05W Derating Curve
MDW48S5-4000
DERATING CURVE
120
FED20-48S05W Derating
DERATING CURVE
Curve
MDW48S5-4000
With Heatsink (Note 7 )
With Heatsink (Note 7)
O U T P U T P O W E R (% )
100
80
60
40
20
0
-40
100LFM
200LFM
300LFM
400LFM
500LFM
-20
0
20
40
60
72
80
100
105
120
Natural convection
100LFM
200LFM
300LFM
400LFM
500LFM
-20
0
20
40
60
80
78
100
105
120
AMBIENT TEMPERATURE(
℃
)
FED20-48S05W
MDW48S5-4000
Efficiency VS
vs
Voltage
Efficiency
Input
Input Voltage
EFFICIENCY(% )
95
90
85
80
75
70
65
60
55
50
45
AMBIENT TEMPERATURE(
℃
)
FED20-48S05W
MDW48S5-4000
Efficiency VS
vs Input
Efficiency
Output Load
Voltage
90%
E F F IC IE N C Y (% )
88%
86%
84%
82%
80%
78%
18
24
30
36
42
48
54
60
66
72
10
20
30
40
50
60
70
80
90
100
INPUT VOLTAGE (V)
OUTPUT LOAD (% of Full Load)
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
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