D-XNS-2W
Series
FIXED INPUT,ISOLATED&UNREGULATED Twin Output DC∕DC Converter
SELECTION GUIDE
Input
Order code
Voltage(VDC)
Output
Range
Voltage
(VDC)
Current
Max
Min
Nominal
Efficiency
(%,Typ)
Switching
Frequency
(KHz,Typ)
D050505XNS-2W
D050909XNS-2W
5
5
5
5
12
12
12
12
24
24
24
24
4.5-5.5
4.5-5.5
4.5-5.5
4.5-5.5
10.8-13.2
10.8-13.2
10.8-13.2
10.8-13.2
21.6-26.4
21.6-26.4
21.6-26.4
21.6-26.4
5
9
12
15
5
9
12
15
5
9
12
15
200
111
83
67
200
111
83
67
200
111
83
67
20
12
9
7
20
12
9
7
20
12
9
7
80
82
82
83
80
83
85
83
81
82
84
84
84
81
82
83
180
150
84
83
82
83
83
80
FEATURES
◆
RoHS compliant
◆
Efficiency up to 85%
◆
SIP Package
◆
Wide temperature performance at full
2 Watt load,-40°C to 85 ℃
◆
UL 94V-0 package material
◆
No heatsink required
◆Low
ripple and good EMC features
◆
Industry standard pinout
◆
Power sharing on output
◆
1KVDC isolation
◆
Continuous Short Circuit Protection
◆
Internal SMD construction
◆
No external components required
◆
Good dynamic feature
D051212XNS-2W
D051515XNS-2W
D120505XNS-2W
D120909XNS-2W
D121212XNS-2W
D121515XNS-2W
D240505XNS-2W
D240909XNS-2W
D241212XNS-2W
D241515XNS-2W
ISOLATION SPECIFICATIONS
Parameter
Isolation test voltage
Test conditions
Flash tested for 1 minute and 1mA max(Vin/Vout)
Flash tested for 1 minute and 1mA max(V01/V02)
Min.
1000
1000
1000
1000
Typ.
Max.
Unit
VDC
VDC
MΩ
MΩ
Isolation resistance
Test at Viso=500VDC(Vin/Vout)
Test at Viso=500VDC(V01/V02)
Isolation capacitance
(Vin/Vout)
(V01/V02)
90
90
PF
PF
MODEL SELECTION
D
①
05
②
05
③
05
④
X
⑤
N
⑥
S
⑦
-2W
⑧
①Product
Series
③Output
Voltage1
⑤Fixed
Input
⑦SIP
Package
②Input
Voltage
④Output
Voltage2
⑥Negation
output
⑧
Rated Power
OUTPUT SPECIFICATIONS
Parameter
Output power
Line regulation
For Vin change of
±1%
10% to 100% full load(5V output)
10% to 100% full load(9V output)
Load regulation
10% to 100% full load(12V output)
10% to 100% full load(15V output)
Output voltage accuracy
Temperature drift
Output Ripple&Noise*
Switching frequency
100% full load
20MHz Bandwidth
Full load,nominal input
100
70
6.8
6.3
10
10
12.8
8.3
Test conditions
Min
Typ.
Max
2
±1.2
15
10
Unit
W
APPLICATIONS
The D-XNS-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) where the voltage of the input power supply is fixed
(voltage variation ≤±10%);
2) where isolation is necessary between input and
output (isolation voltage ≤1000VDC);
3) where the regulation of the output voltage and the
output ripple noise are not demanded.
Such as: purely digital circuits,ordinary low
frequency analog circuits,and 1GBT power device
driving circuits.
%
See tolerance envelope graph
0.03
150
%/°C
MV p-p
Khz
* Test ripple and noise by "parallel cable" method. See detailed operation instructions at Testing of Power
Converter section, application notes.
MICRODC reserves the copyright
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 1 of 2
D-XNS-2W
Series
COMMON SPECIFICATIONS
Parameter
Storage humidity range
Operating temperature
Storage temperature
Lead temperature
Temp.rise at full load
Cooling
Case material
Short circuit protection*
MTBF
Weight
3500
2.8
1.5mm from case for 10 seconds
-40
-55
300
15
25
Conditions
Min.
Typ.
Max.
95
85
125
℃
Units
%
Filtering
To get the input/output 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).
Free air convection
Plastic(UL94-V0)
Continuous
1
s
K hours
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 be proper.
If the capacitance is too big, a startup problem might arise. For every channel
of output, provided the safe and reliable operation is ensured, the
greatest capacitance of its filter capacitor sees (Table 1).
g
*Supply voltage must be discontinued at the end of short circuit duration.
TYPICAL CHARACTERISTICS
Temperature Derating Graph
EXTERNAL CAPACITOR TABLE (TABLE 1)
Vin
Cin
Vout
Cout
(VDC)
5
12
24
--
(μF)
47
2.2
1.0
--
(VDC)
5
9
12
15
(μF)
4.7
2.2
1.0
0.47
It's not recommend to connect any external capacitor in the application field
with less than 0.5 watt output.
Output Voltage Regulation and Over-voltage Protection Circuit
The simplest device for output voltage regulation, over-voltage and
over-current protection is a linear voltage regulator with overheat protection
that is conne ct ed to the inpu t or outp ut end in ser i es (F i gu r e 2) .
OUTLINE DIMENSIONS & PIN CONNECTIONS
SIZE Graph
RECOMMENDED FOOTPRINT
Top view,grid:2.54mm(0.1inch)
diameter:1.00mm(0.039inch)
FOOTPRINT DETAILS
Pin
1
2
4
Note:
Unit:mm(inch)
Pin section:0.50*0.3mm(0.020*0.012inch)
Pin section tolerances: 0.10mm( 0.004inch)
General tolerances: ±0.25mm(±0.010inch)
5
6
7
Function
VIN
GND
0V1
+V01
0V2
+V02
When the environment temperature is higher than 71°C, the
71°
product output power should be less than 60% of the
tha
rated power.
No parallel connection or plug and play.
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, and that this
product should
never be operated under no load!
RoHS COMPLIANT INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature
of 300°C for 10 seconds.
The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin
with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this
series are backward compatible with Sn/Pb soldering systems.
Microdc Professional Power Module,Inc.
Tel:0086-20-86000646
E-mail:tech@microdc.cn
Website:http://www.microdc.cn
REACH COMPLIANT INFORMATION
This series has proven that this product does not contain harmful chemicals, it also has
harmful chemical substances through the registration, inspection and approval.
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 2 of 2
Test/Measurement
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