MD Series
Rev. B
Single and Dual Output
20 Watt DC/DC Converter
2:1 Wide Input Voltage Range
FEATURES
APPLICATIONS
●
Output Current up to 6A
●
Measurement
●
High Efficiency up to 89%
●
Wireless Network
●
2:1 Wide Input Voltage Range
●
Telecom/Datacom
●
Six-Sided Continuous Shielding
●
Industry Control System
●
20 Watts Maximum Output Power
●
Semiconductor Equipment
●
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:
MD Series
All specifications apply @ 25°C ambient unless otherwise noted
INPUT SPECIFICATIONS
Input Voltage Range ............ 12V nominal input .......................... 9-18VDC
24V nominal input ........................ 18-36VDC
48V nominal input ........................ 36-75VDC
Input Filter .................................................................................... L-C Type
Input Voltage Variation .................... dv/dt ................................ 5V/ms max
(Complies with ETS300 132 part 4.4)
Input Surge Voltage (100ms max) ....... 12V input ...........................36VDC
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................................................................................10ms typ.
Remote ON/OFF ....................................................................10ms typ.
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
GENERAL SPECIFICATIONS
Efficiency ........................................................................................see table
Switching Frequency .................................................................500KHz 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 .............................................................. 1000pF max.
9
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature ................................ -40°C ~ +85°C (with derating)
Storage Temperature .......................................................... -55°C ~ +105°C
Maximum Case Temperature ............................................................. 100°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).................................................................. 1.791 x 10 hours
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)....................................................... ±0.2%
Load Regulation (no load to full load) ............................................... ±0.5%
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
SAFETY & EMC
Approvals and Standards .................. IEC60950-1, UL60950-1, EN60950-1
EMI (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 (Note 9) ............EN61000-4-5 ......................... ±1KV Perf. Criteria B
Conducted Immunity...EN61000-4-6 .................... 10 Vrms Perf. Criteria A
PROTECTION SPECIFICATIONS
Over Voltage Protection........... 1.5, 1.8, 2.5, 3.3V outputs..................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% max.
Short Circuit Protection. ...................................Hiccup, automatic recovery
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
MD Series
Rev. B
Single and Dual Output
20 Watt DC/DC Converter
2:1 Wide Input Voltage Range
OUTPUT VOLTAGE / CURRENT RATING CHART
Model Number
MD12S1.5-6000
MD12S1.8-6000
MD12S2.5-6000
MD12S3.3-5000
MD12S5-4000
MD12S12-1670
MD12S15-1330
MD12D12-833
MD12D15-667
MD24S1.5-6000
MD12S1.8-6000
MD24S2.5-6000
MD24S3.3-5000
MD24S5-4000
MD24S12-1670
MD24S15-1330
MD24D12-833
MD24D15-667
MD48S1.5-6000
MD48S1.8-6000
MD48S2.5-6000
MD48S3.3-5000
MD48S5-4000
MD48S12-1670
MD48S15-1330
MD48D12-833
MD48D15-667
Input Range
Output Voltage
1.5 VDC
1.8 VDC
2.5 VDC
3.3 VDC
5 VDC
12 VDC
15 VDC
±12VDC
±15VDC
1.5 VDC
1.8 VDC
2.5 VDC
3.3 VDC
5 VDC
12 VDC
15 VDC
±12VDC
±15VDC
1.5 VDC
1.8 VDC
2.5 VDC
3.3 VDC
5 VDC
12 VDC
15 VDC
±12VDC
±15VDC
Output Current
Min. Load Full Load
0mA
6000mA
0mA
6000mA
0mA
6000mA
0mA
5000mA
0mA
4000mA
0mA
1670mA
0mA
1330mA
0mA
±833mA
0mA
±667mA
0mA
6000mA
0mA
6000mA
0mA
6000mA
0mA
5000mA
0mA
4000mA
0mA
1670mA
0mA
1330mA
0mA
±833mA
0mA
±667mA
0mA
6000mA
0mA
6000mA
0mA
6000mA
0mA
5000mA
0mA
4000mA
0mA
1670mA
0mA
1330mA
0mA
±833mA
0mA
±667mA
12VDC
(9 – 18 VDC)
24VDC
(18 – 36 VDC)
48VDC
(36 – 75 VDC)
Output
Ripple & Noise
60mVp-p
60mVp-p
60mVp-p
60mVp-p
75mVp-p
75mVp-p
75mVp-p
100mVp-p
100mVp-p
60mVp-p
60mVp-p
60mVp-p
60mVp-p
75mVp-p
75mVp-p
75mVp-p
100mVp-p
100mVp-p
60mVp-p
60mVp-p
60mVp-p
60mVp-p
75mVp-p
75mVp-p
75mVp-p
100mVp-p
100mVp-p
(4)
Input Current
(3)
(2)
No load
Full load
70mA
1014mA
75mA
1200mA
80mA
1582mA
115mA
1698mA
75mA
2008mA
90mA
2037mA
35mA
2027mA
45mA
2032mA
50mA
2034mA
35mA
493mA
45mA
584mA
40mA
781mA
30mA
838mA
35mA
980mA
55mA
1006mA
40mA
1002mA
30mA
1004mA
30mA
993mA
15mA
247mA
20mA
288mA
30mA
391mA
15mA
414mA
20mA
490mA
35mA
497mA
50mA
501mA
20mA
496mA
20mA
496mA
Eff
(%)
78
79
83
85
87
86
86
86
86
80
81
84
86
89
87
87
87
88
80
82
84
87
89
88
87
88
88
(4)
Capacitor
Load max
65000uF
65000uF
33000uF
13000uF
6800uF
2200uF
755uF
±680uF
±450uF
65000uF
65000uF
33000uF
13000uF
6800uF
2200uF
755uF
±680uF
±450uF
65000uF
65000uF
33000uF
13000uF
6800uF
2200uF
755uF
±680uF
±450uF
(5)
NOTES
1.
2.
3.
4.
5.
6.
7.
8.
BELLCORE TR-NWT-000332. Case 1: 50% Stress, Temperature at 40ºC. (Ground fixed and 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: MD48S12-1670R).
Heat sink is optional. Contact Factory for ordering details.
The MD Series can meet EN55022 Class A with an external capacitor in parallel with the input pins.
Recommended: 12Vin: 4.7µF/50V
24Vin: 2.2µF/50V
48Vin: 2.2µF/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, 220µF/100V, ESR 48mΩ.
9.
DERATING CURVES & EFFICIENCY GRAPHS
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797