Rev A
MMW Series
Single and Dual Output
4:1 Input Voltage Range
25~30 Watt DC/DC Converter
FEATURES
●
Soft Start
●
Output Trim
●
1500VDC Isolation
●
Six-Sided Shielding
●
Efficiency up to 89%
●
Single & Dual Outputs
●
Remote On/Off Control
●
MTBF > 1,000,000 Hours
●
Low Profile: 0.37” (9.3mm)
●
CSA1950 Safety Approval
●
4:1 Wide Input Voltage Range
●
Complies with EN55022 Class A
●
Short Circuit, Over Voltage, and Over Temperature Protected
DESCRIPTION
The MMW series power modules are low-profile dc/dc converters that offer up to 30 watts of output power in a 2 x 1.6 x 0.37 inch package.
These converters operate over input voltage ranges of 10-40VDC and 18-75VDC. This series also provides regulated single and dual
output voltages of 3.3, 5, 12, 15, ±12 and ±15VDC. Other features include remote on/off control, output trim function, six-sided shielding,
and efficiencies up to 89%. All models are over voltage, over temperature and short circuit protected. The EN55022 Class A conducted
noise compliance minimizes design time, cost, and eliminates the need for external filter components. These converters are best suited for
data communication equipment, mobile battery driven equipment, distributed power systems, telecommunications equipment, mixed
analog/digital subsystems, process/machine control equipment, computer peripheral systems, and industrial robot systems.
SPECIFICATIONS:
MMW Series
All specifications are based on 25°C, Nominal Input Voltage, and Maximum Output Current unless otherwise noted.
We reserve the right to change specifications based on technological advances.
SPECIFICATION
TEST CONDITIONS
Min
Nom
Max
Unit
INPUT (V
in
)
24V nominal input models
10
24
40
VDC
Input Voltage Range
48V nominal input models
18
48
75
VDC
24V nominal input models
9.4
9.7
10
VDC
Start Voltage
48V nominal input models
17
17.5
18
VDC
24V nominal input models
9
9.3
9.5
VDC
Under Voltage Shutdown
48V nominal input models
16
16.5
17
VDC
Reverse Polarity Input Current
All models
2
A
Short Circuit Input Power
4500
mW
24V nominal input models
-0.7
50
VDC
Input Surge Voltage
48V nominal input models
-0.7
100
VDC
Input Filter
Pi Filter
OUTPUT (V
o
)
Output Voltage Range
See Rating Chart
Output Voltage Accuracy
±0.5
±1.0
%
Output Voltage Balance
Dual Outputs, Balanced Loads
±0.5
±2.0
%
Output Trim
% of nominal output
±9.0
±10.0
±11.0
%
Load Regulation
Io = 50% to 100%
±0.3
±1.0
%
Line Regulation
Vin = min. to max.
±0.2
±0.5
%
Output Power
30
W
Output Current Range
See Rating Chart
Ripple & Noise (20MHz)
55
80
mV
pk-pk
Ripple & Noise (20MHz)
Over Line, Over Load, and Over Temperature
100
mV
pk-pk
Ripple & Noise (20MHz)
10
mVrms
Transient Recovery Time
25% load step change
150
300
µs
Transient Response Deviation
±2
±4
%
REMOTE ON/OFF
Supply On
2.5 to 100VDC or Open Circuit
Supply Off
-1
1
VDC
Standby Input Current
2
5
mA
Control Input Current (On)
Vin – RC = 5.0V
5
µA
Control Input Current (Off)
Vin – RC = 0V
-100
µA
Control Common
Referenced to negative input
PROTECTION
Over Power Protection
120
180
%
Short Circuit Protection
Continuous
Over Voltage Protection
See Rating Chart
24V nominal input models
5000mA slow-blow type
Input Fuse Recommendation
48V nominal input models
3000mA slow-blow type
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Rev A
MMW Series
Single and Dual Output
4:1 Input Voltage Range
25~30 Watt DC/DC Converter
Min
Nom
Max
Unit
SPECIFICATION
GENERAL
Efficiency
Switching Frequency
Isolation Voltage Rated
Isolation Voltage Test
Isolation Resistance
Isolation Capacitance
Internal Power Dissipation
Max. Capacitive Load
ENVIRONMENTAL
Operating Temperature (Ambient)
Operating Temperature (Case)
Storage Temperature
Over Temperature Protection
Lead Temperature
Humidity
Cooling
RFI
Temperature Coefficient
MTBF
Conducted EMI
PHYSICAL
Weight
Dimensions (L x W x H)
Case Material
Flammability
Heatsink material
Heatsink finish
TEST CONDITIONS
60 seconds
Flash Test for 1 second
500VDC
100KHz, 1V
290
1500
1650
1000
See Rating Chart
330
360
1500
5,500
See Rating Chart
-40
-40
-50
107
1200
KHz
VDC
VDC
MΩ
pF
mW
Case Temperature, automatic
1.5mm from case for 10 seconds
MIL-HDBK-217F @ 25°C, Ground Benign
+50
°C
+105
°C
+125
°C
112
117
°C
260
°C
95
%
Free air convection
Six-sided shielding, metal case
±0.01
±0.02
%/°C
1000
Khours
EN55022 Class A
48 grams (heatsink 2g)
2.0 x 1.6 x 0.37 inches
50.8 x 40.6 x 9.3 mm
Metal with non-conductive baseplate
UL94V-0
Aluminum
Anodic treatment (black)
OUTPUT VOLTAGE / CURRENT RATING CHART
SINGLE OUTPUT MODELS
Model Number
MMW24S3.3-5500
MMW24S5-5000
MMW24S12-2500
MMW24S15-2000
MMW48S3.3-5500
MMW48S5-5000
MMW48S12-2500
MMW48S15-2000
Input Voltage
24 VDC
(10 ~ 40 VDC)
Output
Voltage
Output Current
Input Current
Reflected
Ripple Current
Min
Max
No Load Max Load
400 mA 5500 mA
922 mA
350 mA 5000 mA
1225 mA
20 mA
50 mA
166 mA 2500 mA
1404 mA
133 mA 2000 mA
1404 mA
400 mA 5500 mA
461 mA
350 mA 5000 mA
613 mA
10 mA
25 mA
166 mA 2500 mA
702 mA
133 mA 2000 mA
702 mA
DUAL OUTPUT MODELS
Output Current
Input Current
Min
±83
±65
±83
±65
Max
±1250
±1000
±1250
±1000
20mA
20mA
10mA
10mA
1404 mA
1404 mA
702 mA
702 mA
Efficiency
(Typ)
82%
85%
89%
89%
82%
85%
89%
89%
Over Voltage
Maximum
Protection Capacitive Load
3.9 VDC
6.8 VDC
15 VDC
18 VDC
3.9 VDC
6.8 VDC
15 VDC
18 VDC
10000 µF
10000 µF
1000 µF
1000 µF
10000 µF
10000 µF
1000 µF
1000 µF
3.3 VDC
5 VDC
12 VDC
15 VDC
3.3 VDC
48 VDC
5 VDC
(18 ~ 75 VDC) 12 VDC
15 VDC
Model Number
MMW24D12-1250
MMW24D15-1000
MMW48D12-1250
MMW48D15-1000
# For each output
Input Voltage
Output
Voltage
Reflected
No Load Max Load Ripple Current
50mA
25mA
Efficiency
(Typ)
89%
89%
89%
89%
Over Voltage
Protection
±15 VDC
±18 VDC
±15 VDC
±18 VDC
±12 VDC
24 VDC
(10 ~ 40 VDC) ±15 VDC
±12 VDC
48 VDC
(18 ~ 75 VDC) ±15 VDC
Maximum
Capacitive
Load
330 µF
#
330 µF
#
330 µF
#
330 µF
#
NOTES
1. Transient recovery time is measured to within 1% error band for a step change in output load of 75% to 100%.
2. The MMW series requires a minimum output loading to maintain specified regulations. Operation under no-load
conditions will not damage these devices, however they may not meet all listed specifications.
3. All DC/DC converters should be externally fused at the front end for protection.
4. Other input and output voltages may be available, please contact factory.
5. Heatsink is optional. Please consult factory for ordering details.
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Rev A
MMW Series
Single and Dual Output
4:1 Input Voltage Range
25~30 Watt DC/DC Converter
BLOCK DIAGRAMS
Single Output
+Vin
LC
Filter
+Vo
Dual Output
+Vin
LC
Filter
+Vo
Com.
-Vo
OVP
OTP
PWM
Isolation
OVP
-Vin
Ref.Amp
Trim
On/Off
PWM
Isolation
Ref.Amp
Trim
OVP
OTP
OVP
-Vo
-Vin
On/Off
MECHANICAL DRAWING
Unit: mm [inches]
40.6 [1.60]
10.20 [0.402] 10.20 [0.402] 10.20 [0.402]
CONNECTING PIN PATTERNS
Single Output
5.0 [0.20]
6.0 [0.24]
9.3[0.37]
5
6
7
8
45.70 [1.801]
50.8 [2.00]
Bottom
Side
Bottom View (2.54mm / 0.1 inch grids)
1
2
4
5.10 [0.201]
7.6 [0.30]
1. Tolerance: X.X±0.25 [X.XX±0.01]
X.XX±0.13 [X.XXX±0.005]
2. Pin: ±0.05 [±0.002]
2.5 [0.10]
1.00[
0.039]
Dual Output
Bottom View (2.54mm / 0.1 inch grids)
PIN CONNECTIONS
PIN
1
2
4
5
6
7
8
SINGLE OUTPUT
+Vin
-Vin
Remote ON/OFF
No Pin
+Vout
-Vout
Trim
DUAL OUTPUT
+Vin
-Vin
Remote ON/OFF
+Vout
Common
-Vout
Trim
The MMW Series converter is encapsulated in a low thermal resistance molding
compound that has excellent resistance/electrical characteristics over a wide
temperature range or in high humidity environments.
The encapsulant and unit case are both rated to UL 94V-0 flammability
specifications. Leads are tin plated for improved solderability.
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Rev A
MMW Series
Single and Dual Output
4:1 Input Voltage Range
25~30 Watt DC/DC Converter
INPUT VOLTAGE TRANSIENT RATING
150
140
130
120
110
100
Vin ( VDC )
90
80
70
60
50
40
30
20
10
0
10uS
100uS
1mS
10mS
100mS
24VDC Input Models
48VDC Input Models
EFFICIENCY GRAPHS
Efficiency vs Input Voltage (Single Output)
100
90
Efficiency (%)
Efficiency (%)
100
90
80
70
60
50
Efficiency vs Input Voltage (Dual Output)
80
70
60
50
Low
Nom
Input Voltage (V)
High
Low
Nom
Input Voltage (V)
High
Efficiency vs Output Load (Single Output)
100
90
Efficiency (%)
Efficiency (%)
100
90
80
70
60
50
40
30
10
Efficiency vs Output Load (Dual Output)
80
70
60
50
40
30
10
20
40
60
80
100
Load Current (%)
20
40
60
80
100
Load Current (%)
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
Rev A
MMW Series
Single and Dual Output
4:1 Input Voltage Range
25~30 Watt DC/DC Converter
DERATING CURVE
100
80
Output Power (%)
Natural
convection
60
100LFM
200LFM
400LFM
40
20
0
-40
~
¡ã
50
60
70
80
90
100
110
Ambient Temperature (°C)
DESIGN & FEATURE CONSIDERATIONS
Over Current Protection
To provide protection in a fault (output overload) condition, the unit is equipped with internal current limiting circuitry and can
endure current limiting for an unlimited duration. At the point of current-limit inception, the unit shifts from voltage control to
current control. The unit operates normally once the output current is brought back into its specified range.
Over Voltage Protection
The output over voltage clamp consists of control circuitry that is dependent on the primary regulation loop that monitors the
voltage on the output terminals. The control loop of the clamp has a higher voltage set point than the primary loop. This
provides a redundant voltage control that reduces the risk of an output over voltage. The OVP level can be found in the
protection specifications.
Input Source Impedance
The power module should be connected to a low ac-impedance input source. Highly inductive source impedances can affect
the stability of the power module. In applications where power is supplied over long lines and output loading is high, it may
be necessary to use a capacitor at the input to ensure startup. A capacitor mounted close to the power module helps ensure
stability of the unit, it is recommended to use a good quality low Equivalent Series Resistance (ESR < 1.0Ω at 100KHz)
capacitor of a 33µF for the 24V input models and a 10µF for the 48V input models.
+
DC Power
Source
-
+
Cin
+Vin
DC / DC
Converter
-Vin
+Out
Load
-Out
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
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