MA-XD-1W&MA-XD-2W
Series
1W/2W, FIXED INPUT , ISOLA TED & REGULATED DUAL OUTPUT DC-DC CONVERTER
SELECTION GUIDE
Input
Order code
Voltage(VDC)
Nominal
MA0512XD-1W
5
5
5
5
5
12
12
12
12
12
24
24
24
24
24
Range
4. 75-5.25
4. 75-5.25
4. 75-5.25
4. 75-5.25
4. 75-5.25
11. 4-12.6
11. 4-12.6
11. 4-12.6
11. 4-12.6
11. 4-12.6
22. 8-25.2
22. 8-25.2
22. 8-25.2
22. 8-25.2
22. 8-25.2
Voltage
(VDC)
±12
±15
±9
±12
±15
±12
±15
±9
±12
±15
±12
±15
±9
±12
±15
Output
Current(mA)
Max.
±42
±33
±100
±83
±67
±42
±33
±100
±83
±67
±42
±33
±100
±83
±67
Min.
±5
±4
±10
±9
±7
±5
±4
±10
±9
±7
±5
±4
±10
±9
±7
Efficiency
1
(%,Typ)
64
65
62
63
64
64
65
63
65
66
64
65
63
66
67
FEATURES
◆
Low ripple
◆
Good dynamic feature
◆
1KVDCIsolation
◆
DIP24 Package
◆
Temperature Range:-40℃ ~ +85
℃
◆
UL94-V0 Package
◆
No Heatsink Required
◆
No External Component Required
◆
Internal SMD construction
◆
RoHS Compliance
MA0515XD-1W
MA0509XD-2W
MA0512XD-2W
MA0515XD-2W
MA1212XD-1W
MA1215XD-1W
MA1209XD-2W
MA1212XD-2W
MA1215XD-2W
MA2412XD-1W
MA2415XD-1W
MA2409XD-2W
MA2412XD-2W
MA2415XD-2W
MODEL SELECTION
①
②
③
④
⑤
⑥
MA 05 12 -X D -2W(83)
①Product
Series
②Input
Voltage
③Output
Voltage
④Fixed
Input
⑤DIP24
Package Style
⑥Rated
Power(Output current)
ISOLATION SPECIFICATIONS
Parameter
Storage humidity
Isolation resistance
Test conditions
Tested for 1 minute and 1mA max
Test at 500VDC
Min.
1000
1000
Typ.
Max.
Units
VDC
MΩ
APPLICATIONS
The MA_XD-1W & MA_XD-2W Series are specially
designed for applications where a group of polar
power supplies are isolated from the input power
supply in a distributed power supply system on a
circuit board.
These products apply to:
1)
2)
3)
Where the voltage of the input power supply is fixed
Where isolation is necessary between input
Where the regulation of the output voltage and
and
the
(voltage variation≤±5%);
Output Noise*
Switching frequency
Output voltage accuracy
Temperature drift
2
Output ripple*
COMMON SPECIFICATIONS
Parameter
Line regulation
Test conditions
For Vin change of
±5%(1W&2W)
10% to 100% full load
100% full load
100% full load
20MHz Bandwidth(1W)
20MHz Bandwidth(2W)
20MHz Bandwidth(1W&2W)
Full load, nominal
input
Min
Typ.
Max.
±0.25
±1
±3
0.03
Units
%
%
%
%/℃
mVp-p
mVp-p
mVp-p
KHz
10
20
50
75
20
40
150
output (isolation voltage
≤1000VDC);
output ripple noise are demanded.
*Test ripple and noise by
“
parallel cable
”
met hod.See detailed operation instructions at Testing of Power
Converter section, application notes.
Note:
1. All specifications measured at TA=25℃, humidity<75%, nominal input voltage and rated output load
otherwise specified.
2. See below recommended circuits for more details.
unless
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MA-XD-1W&MA-XD-2W
Series
COMMON SPECIFICATION
Parameter
Storage humidity
Operating temperature
Storage temperature
Temp. rise at full load
Lead temperature
Short circuit protection*
Cooling
Case material
MTBF
Weight
*Supply voltage must be discontinued at the end of short circuit duration.
3500
11
1. 5mm from case for 10 seconds
-40
-55
20
Recommended circuit
Test conditions
Min.
Typ.
Max
95
85
125
30
300
1
Units
%
℃
℃
℃
℃
s
If you want to further decrease the input /output ripple, an “LC”
filtering network may be connected to the input and output ends of the
DC/ DC converter , see (Figure 1).
Free air convection
Plastic(UL94-V0)
K hours
g
It should also be noted that the inductance and the frequency of the
“LC” filtering network should be staggered with the DC/ DC frequency to
avoid mutual interference. However , the capacitance of the out put
TYPICAL CHARACTERISTICS
filter capacitor must be proper .If the capacitance is too big, a startup
problem might arise. For every channel of out put , provided the safe
and reliable operation is ensured, the greatest capacitance of its filter
capacitor sees (Table 1).
It’s not recommended to connect any external capacitor in the
TYPICAL CHARACTERISTICS
application field with less than 0.5 watt output.
Overload Protection
Under normal operating conditions, the output circuit of these
products has no protection against over-current and short-circuits. The
simplest method is to connect a self-recovery fuse in series at the input
end or add a circuit breaker to the circuit.
Input Over-voltage Protection Circuit
The simplest device for input over-voltage protection is a linear
voltage regulator with overheat protection that is connected to the input
end in series (Figure 2).
APPLICATION NOTE
Requirement on output load
To ensure this module can operate efficiently and reliably , During operation, the minimum output
load is
not less than 10% of the full load
and that this product should
never be operated under no
load,
load!
If the actual output power is very small, please connect a resistor with proper resistance at the output
end
in parallel to increase the load, or use our company’s products with a lower rated output power.
When the environment temperature is higher than 71 C, the
71°C,
product output power should be less then 60% of the rated power.
No parallel connection or plug and play.
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
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