M1WIE_KS Series
1W FIXED INPUT ISOLATED & REGULATED DUAL
OUTPUT DC-DC CONVERTER
FEATURES
Low ripple and good EMC features
Good dynamic feature
3KVDC Isolation
SIP Package
Temperature Range: -40°C~+85°C
UL94-V0 Package
No Heat Sink Required
No External Component Required
RoHS Compliance
PRODUCT PROGRAM
Part
Number
M1WIE0505KS
M1WIE0509KS
M1WIE0512KS
M1WIE0515KS
M1WIE1205KS
M1WIE1209KS
M1WIE1212KS
M1WIE1215KS
M1WIE2405KS
M1WIE2409KS
M1WIE2412KS
M1WIE2415KS
12
11.4 - 12.6
5
4.75 - 5.25
Input
Voltage (VDC)
Nominal
Range
Voltage
(VDC)
±5
±9
±12
±15
±5
±9
±12
±15
±5
24
22.8 - 25.2
±9
±12
±15
Output
Current (mA)
Max
±100
±56
±42
±33
±100
±56
±42
±33
±100
±56
±42
±33
Min
±10
±6
±5
±4
±10
±6
±5
±4
±10
±6
±5
±4
Efficiency
(%, Typ)
54
63
63
63
55
62
64
64
54
62
63
64
APPLICATIONS
The M1WIE_KS 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) Where the voltage of the input power supply is
fixed (voltage variation
≤±
5%);
2) Where isolation is necessary between input
and output (isolation voltage
≤
3000VDC);
3) Where the regulation of the output voltage and
the output ripple noise are demanded.
COMMON SPECIFICATIONS
Operating temperature range
Storage temperature range
Storage humidity range
Cooling
Lead temperature
Temperature rise at full load
Short circuit protection
Case material
MTBF
Weigh
-40°C to +85°C
-55°C to +125°C
≤
95%
Free air convection
300°C (1.5mm from case for 10 seconds)
25°C MAX, 15°C TYP
1 second
Plastic (UL94-V0)
>3,500,000 hours
5.3g
ISOLATION SPECIFICATIONS
Item
Isolation voltage
Isolation resistance
Test conditions
Tested for 1 minute
Test at 500VDC
Min
3000
1000
Typ
Max
Units
VDC
MΩ
OUTPUT SPECIFICATIONS
Item
Output power
Line regulation
Load regulation
Output voltage accuracy
Temperature drift
Output ripple
Output noise
Switching frequency
Test conditions
For Vin change of ±5%
10% to 100% full load
100% full load
100% full load
20MHz Bandwidth
Full load, nominal input
10
50
75
Min
0.1
Typ
Max
1
0.25
±1
±3
0.03
20
100
Units
W
%
%/
°
C
mVp-p
KHz
Note:
1.All specifications measured at TA=25
°C
, humidity<75%, nominal input voltage and rated output load unless
otherwise specified.
2.See below recommended circuits for more details.
Tel: 732-249-2656
www.megaelectronics.com
Fax: 732-249-7442
A/2-2007
Page 1 of 2
TYPICAL CHARACTERISTICS
Temperature Derating Graph
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.
When the environment temperature is
higher than 71°C, the product output
power should be less then 60% of the
rated power.
Operating Temp.(
C
)
OUTLINE DIMENSIONS
RECOMMENDED FOOTPRINT
1.25
1 2
2.32
0
+0.5
7
9 10
2.54
9.5
Bottom view,grid:2.54mm(0.1inch)
+0.02
)
0
1 2
7
9 10
(1.08)
+0.5
+0.02
)
0
12.0
(0.47)
4.1
0
FOOTPRINT DETAILS
Pin
1
2
7
9
10
Function
Vin
GND
+Vo
-Vo
0V
Note:
Unit:mm(inch)
Pin demension:0.5*0.3
+
0.05mm
(0.02*0.01
+
0.002inch)
General tolerances:
+
0.25mm (
+
0.01inch)
APPLICATION NOTE
Requirement on output load
To ensure this module can operate efficiently and reliably, a minimum load is specified for
this kind of DC/DC converter in addition to a maximum load (namely full load). During
operation, make sure the specified range of input voltage is not exceeded, the minimum
output load is
not less than 10%
of the full load, that this product should never be
operated under no load!
Filtering
To get an extreme low ripple, an “LC” filtering network may be connected to the input and
output ends of the DC/DC converter, which may produce a more significant filtering effect.
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 (see figure 1).
Vin
Cin
L
L
DC DC
Cout
L
Cout
+Vo
0V
-Vo
GND
(figure 1)
In some circuits which are sensitive to noise and ripple, a filtering capacitor may be added
to the DC/DC output end and input end to reduce the noise and ripple. However, the
capacitance of the output filter capacitor must proper. If the capacitance is too big, a
startup problem might arise. For every channel of output, providing the safe and reliable
operation is ensured, the greatest capacitance of its filter capacitor refer to the
EXTERNAL
CAPACITOR TABLE（TABLE1）.
EXTERNAL CAPACITOR TABLE（TABLE1）
Vin
Vout
Cout
Cin
(VDC)
(VDC)
(uF)
(uF)
5
12
24
--
4.7
2.2
1
--
5
9
12
15
4.7
2.2
1
0.47
Tel: 732-249-2656
www.megaelectronics.com
Fax: 732-249-7442
A/2-2007
Page 2 of 2
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