DC/DC Converter FEATURES A_XT-1WR2 Series
DC/DC Converter
A_XT-1WR2 Series
1W, Fixed input voltage, isolated & unregulated
dual output
Patent Protection RoHS
FEATURES
l
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Efficiency up to 82%
Isolation voltage: 1.5K VDC
Operating temperature range: -40℃ to +105℃
Miniature SMD package
Internal surface mounted design
No external component required
International standard pin-out
A_XT-1WR2 series is specially designed for applications where an isolated voltage is required in a distributed power supply system. It is
suitable for
1.Where the voltage of the input power supply is stable (voltage variation: ±10%Vin);
2.Where isolation is necessary between input and output (isolation voltage ≤1500VDC);
3.Where do not has high requirement of line regulation , load regulation and the ripple & noise of the output voltage;
Such as: pure digital circuits, low frequency analog circuits, and relay-driven circuits.
Selection Guide
Input Voltage (VDC)
Part No.
Output
Efficiency
(%,Min./T yp.)
Max. Capacitive
Load
(µF)
Nominal
Output Voltage
Output Current (mA)
(Range)
(VDC)
(Max./Min.)
@ Full Load
3.3
(2.97-3.63)
±5
±100/±10
74/78
±12
±42/±5
74/78
±15
±33/±3
74/78
A0505XT-1WR2
±5
±100/±10
76/80
A0509XT-1WR2
±9
±56/±6
76/80
±12
±42/±5
77/81
A0305XT-1WR2
A0312XT-1WR2
A0315XT-1WR2
A0512XT-1WR2
A0515XT-1WR2
5
(4.5-5.5)
±15
±33/±3
77/81
A0524XT-1WR2
±24
±21/±2
77/81
A1205XT-1WR2
±5
±100/±10
76/80
A1209XT-1WR2
±9
±56/±6
76/80
±12
±42/±5
77/81
±15
±33/±3
77/81
±24
±21/±2
77/81
±15
±33/±3
77/81
±5
±100/±10
76/80
±9
±56/±6
76/80
±12
±42/±5
77/81
±15
±33/±3
78/82
±24
±21/±2
78/82
A1212XT-1WR2
A1215XT-1WR2
12
(10.8-13.2)
A1224XT-1WR2
A1515XT-1WR2
15
(13.5-16.5)
A2405XT-1WR2
A2409XT-1WR2
A2412XT-1WR2
A2415XT-1WR2
24
(21.6-26.4)
A2424XT-1WR2
100
Input Specifications
Item
Input Current (full load / no-load)
Input Current (full load / no-load)
Operating Conditions
Min.
Typ.
Max.
3.3VDC input
--
389/25
--
5VDC input
--
250/20
--
12VDC input
--
104/15
--
15VDC input
--
83/12
--
24VDC input
--
52/10
--
2014.05.22-A/1
Unit
mA
mA
Page 1 of 4
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
A_XT-1WR2 Series
Surge Voltage (1sec. max.)
3.3VDC input
-0.7
--
5
5VDC input
-0.7
--
9
12VDC input
-0.7
--
18
15VDC input
-0.7
--
21
24VDC input
-0.7
--
30
--
15
--
Reflected Ripple Current
Input Filter
VDC
mA
Capacitor filter
Output Specifications
Item
Operating Conditions
Min.
Output Voltage Accuracy
Max.
Unit
See tolerance envelope graph (Fig. 1)
Line Regulation
Input voltage change: ±1%
Load Regulation
--
--
±1.2
5VDC output
--
12
--
9VDC output
--
9
--
12VDC output
--
8
--
15VDC output
--
7
--
24VDC output
--
6
--
20MHz bandwidth
--
60
--
mVp-p
100% load
--
--
±0.03
%/℃
10%-100% load
Ripple & Noise*
Temperature Drift Coefficient
Output Short Circuit Protection
Typ.
3.3/5/12/15VDC input
--
%
Continuous, self-recovery
24VDC input
--
--
1
s
Notes: * Ripple and noise tested with “parallel cable” method, please see DC-DC Converter Application Notes for specific operation methods.
**Supply voltage must be discontinued at the end of short circuit duration for 24V input.
General Specifications
Item
Operating Conditions
Min.
Isolation Voltage
Input-output, with the test time of 1 minute and
the leak current lower than 1mA
1500
--
--
VDC
Isolation Resistance
Input-output, Isolation voltage 500VDC
1000
--
--
MΩ
Isolation Capacitance
Input-output, 100KHz/0.1V
--
20
--
pF
Operating Temperature
Derating if the temperature ≥100℃, (see Fig.
2)
-40
--
105
-55
--
125
--
25
--
--
--
300
Storage Temperature
Casing Temperature Rise
Pin Welding Resistance Temperature
Ta=25℃
Welding spot is 1.5mm away from the casing,
10 seconds
Typ.
Max.
Unit
℃
Peak temp.≤245℃, maximum duration time≤60s
at 217℃. For actual application, please refer to
IPC/JEDEC J-STD-020D.1.
Reflow Soldering Temperature
Storage Humidity
Non-condensing
--
--
Switching Frequency
100% load, nominal input voltage
--
100
MTBF
[email protected]℃
3500
--
95
%
300
KHz
--
K hours
Physical Specifications
Casing Material
Black flame-retardant heat-proof epoxy resin (UL94-V0)
Package Dimensions
15.24*11.20*7.25 mm
Weight
1.8g (Typ.)
Cooling Method
Free air convection
EMC Specifications
EMI
EMS
Conducted disturbance
CISPR22/EN55022
CLASS B (see Fig. 5 for recommended circuit)
Radiated emission
CISPR22/EN55022
CLASS B (see Fig. 5 for recommended circuit)
Electrostatic discharge
IEC/EN61000-4-2
Contact ±6KV
perf. Criteria B
2014.05.22-A/1
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
A_XT-1WR2 Series
Product Characteristic Curve
Tolerance Envelope Graph
Temperature Derating C urv e
Ty pic
+5%
Rated
Output Vo ltage
al Loa
d Cur
Output Power Per cent(%)
+10%
+2.5%
ve
Output Voltage
Ac curacy(%)
-2.5%
-7.5%
50
70
100
120
100
80
60
40
Safe Operati ng Area
20
0
-40
Output Current Percentage(%)
0
40
1 00 1 05
En vi ron ment Temp.(℃ )
(Nominal Input Voltage)
Fig. 2
Fig. 1
Efficiency Vs Input Voltage (Full Load)
100
Efficiency Vs Output Load(Vin=Vin-nominal)
100
95
90
80
85
75
70
65
60
60
50
40
30
20
55
10
50
4.5 4.6 4.7 4.8 4.9
5
0
5.1 5.2 5.3 5.4 5.5
10
Input Voltage(V)
20
30
40
50
60
70
80
90
100
Output Current Percentage (%)
Efficiency Vs Output Load(Vin=Vin-Nominal)
Efficiency Vs Input Voltage (Full Load)
100
95
90
90
80
85
70
80
A1205XT-1WR2
75
70
65
Efficiency(%)
100
Efficiency(%)
A0505XT-1WR2
70
A0505XT-1WR2
80
Efficiency(%)
Efficiency(%)
90
60
50
40
30
60
20
55
10
50
A1205XT-1WR2
0
10.8 11.1 11.4 11.7 12.0 12.3 12.6 12.9 13.2
10
20
Input Voltage(V)
30
40
50
60
70
80
90
Output Current Percentage (%)
100
Design Reference
1. Typical application
If it is required to further reduce input and output ripple, a filter capacitor can be connected to the input and output terminals, see Fig.3.
Moreover, choosing suitable filter capacitor is very important, start-up problems may be caused by too large capacitance. To ensured the
modules running well, the recommended capacitive load values as shown in Table 1.
The simplest device for output voltage regulation, over-voltage and over-current protection is a linear voltage regulator with overheat
protection that is connected to the input or output end in series (see Fig. 4).
Vin
GND
Cin
DC DC
Cout
Cout
+Vo
Vin
0V
REG
GND
-Vo
REG
DC DC
0V
REG
Fig.3
+Vo
-Vo
Fig.4
Recommended capacitive load value table (Table 1)
Vin(VDC)
Cin(µF)
Vo (VDC)
Cout(µF)
3.3
4.7
±5
4.7
5
4.7
±9
2.2
12
2.2
±12
1
15
2.2
±15
1
24
1
±24
0.47
It is not recommended to connect any external capacitor when output power is less than 0.5W.
2014.05.22-A/1
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
A_XT-1WR2 Series
2. EMC typical recommended circuit
LDM
Vin
Vin
+Vo
Input voltage (VDC)
C1
GND
DC/DC
GND
LOAD
C2
EMI
-V0
3.3/5/15/12/24
C1
4.7µF /50V
C2
Refer to the Cout in Fig.3
LDM
6.8µH
Fig. 5
3. Output load requirements
To ensure the module work efficiently and reliably, during the operation, the min. output load should be no less than 10% of the full load. If
the actual output power is low, please connect a resister to the output terminal in parallel, with a recommenced resistance which is 10% of
the rated power, and derating is required during operation.
4. For more information please find the application notes on www.mornsun-power.com
Dimensions and Recommended Layout
Notes:
1.
Packing Information please refer to 'Product Packing Information'. Packing bag number: 58210023;
2.
If the product is operated under the min. required load, the product performance cannot be guaranteed to comply with all
performance indexes in this datasheet;
3.
The max. capacitive load should be tested within the input voltage range and under full load conditions;
4.
Unless otherwise specified, data in this datasheet should be tested under the conditions of Ta=25°C, humidity<75% when inputting
nominal voltage and outputting rated load;
5.
All index testing methods in this datasheet are based on our Company’s corporate standards;
6.
The performance indexes of the product models listed in this manual are as above, but some indexes of non-standard model products
will exceed the above-mentioned requirements, and please directly contact our technicians for specific information;
7.
We can provide product customization service;
8.
Specifications of this product are subject to changes without prior notice.
MORNSUN Guangzhou Science & Technology Co., Ltd.
Address: No. 5, Kehui St. 1, Kehui Development Center, Science Ave., Guangzhou Science City, Luogang District, Guangzhou, P. R. China
Tel: 86-20-38601850-8801
Fax: 86-20-38601272
E-mail: [email protected]
2014.05.22-A/1
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
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