DC/DC Converter
B_XT-2WR2 Series
2W, Fixed input voltage, isolated & unregulated
single output
FEATURES
Operating temperature range: -40℃ to +105℃
High efficiency up to 84%
Miniature SMD package
Isolation voltage: 1.5K VDC
Internal surface mounted design
No external component required
International standard pin-out
Patent Protection
RoHS
B_XT-2WR2 series are specially designed for applications where an isolated voltage is required in a distributed power supply system. They are
suitable for
1. Where the voltage of the input power supply is stable (voltage variation: ±10%Vin);
2. Where isolation between input and output is necessary (isolation voltage
≤1500VDC);
3. Where the output voltage regulation and the ripple & noise of the output voltage is not strictly required;
4. Typical application: preceding-stage interference isolation condition; ground-interference canceled condition; digit circuit condition;
Voltage-isolation converting condition; normal low-frequency artificial circuit condition; relay drive circuit condition, etc.
Selection Guide
Input Voltage (VDC)
Certification
Part No.
B0503XT-2WR2
B0505XT-2WR2
B0509XT-2WR2
B0512XT-2WR2
B0515XT-2WR2
B1205XT-2WR2
B1209XT-2WR2
B1212XT-2WR2
CE
B1215XT-2WR2
B1224XT-2WR2
B1515XT-2WR2
B2405XT-2WR2
B2409XT-2WR2
B2412XT-2WR2
B2415XT-2WR2
B2424XT-2WR2
24
(21.6-26.4)
15
(13.5-16.5)
12
(10.8-13.2)
5
(4.5-5.5)
Nominal
(Range)
(VDC)
3.3
5
9
12
15
5
9
12
15
24
15
5
9
12
15
24
Output
Output Voltage
Output Current
(mA)(Max./Min.)
400/40
400/40
222/22
167/17
133/13
400/40
222/22
167/17
133/13
83/8
133/13
400/40
222/22
167/17
133/13
83/8
Efficiency (%,Min./Typ.)
@ Full Load
74/78
75/79
78/82
78/82
79/83
75/79
78/82
78/82
79/83
80/84
79/83
75/79
78/82
78/82
79/83
80/84
220
Max. Capacitive Load
(μF)
Input Specifications
Item
Input Current
(full load / no-load)
Reflected Ripple Current
5V input
Surge Voltage (1sec. max.)
12V input
15V input
24V input
Input Filter
Hot Plug
Operating Conditions
5V input
12V input
15V input
24V input
Min.
--
--
--
--
--
-0.7
-0.7
-0.7
-0.7
Typ.
506/30
212/25
169/18
105/15
15
--
--
--
--
Max.
--/60
--/50
--/35
--/30
--
9
18
21
30
Unavailable
VDC
mA
mA
Unit
Filter capacitor
2015.04.17-A/2
Page 1 of 5
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
B_XT-2WR2 Series
Output Specifications
Item
Output Voltage Accuracy
Line Regulation
Input voltage
change: ±1%
3.3VDC output
Other output
3.3VDC output
5VDC output
Load Regulation
10%-100% load
9VDC output
12VDC output
15VDC output
24VDC output
Ripple & Noise*
Temperature Coefficient
Short Circuit Protection**
20MHz bandwidth
Full load
24VDC output
Other output
--
--
--
--
--
--
--
--
--
--
--
--
Operating Conditions
Min.
Typ.
--
--
18
12
9
8
7
6
100
100
--
--
Max.
±1.5
±1.2
--
--
--
--
--
--
200
150
±0.03
1
mVp-p
%/℃
s
%
Unit
See tolerance envelope graph (Fig. 1)
--
Note: * Ripple and noise are measured by “parallel cable” method, please see DC-DC Converter Application Notes for specific operation;
** Supply voltage must be discontinued at the end of short circuit duration.
General Specifications
Item
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Operating Conditions
Input-output, with the test time of 1 minute and the leak
current lower than 1mA
Input-output, isolation voltage 500VDC
Input-output, 100KHz/0.1V
5V output
Operating Temperature
Other output
Storage Temperature
Casing Temperature Rise
Pin Welding Resistance
Temperature
Storage Humidity
Reflow Soldering Temperature
Switching Frequency
MTBF
Full load, nominal input voltage
MIL-HDFK-217F@25℃
Ta=25℃, nominal input, full load output
Welding spot is 1.5mm away from the casing, 10 seconds
Non-condensing
Derating if the temperature
≥71°C,
(see Fig. 2)
Derating if the temperature
≥85°C,
(see Fig. 2)
Min.
1500
1000
--
Typ.
--
--
20
Max.
--
--
--
Unit
VDC
MΩ
pF
-40
--
105
℃
-55
--
--
--
--
25
--
--
125
--
300
95
%RH
Peak temp.≤245℃, maximum duration
time≤60s at 217℃.
For actual application, please refer to
IPC/JEDEC J-STD-020D.1.
--
3500
100
--
--
--
KHz
K hours
Physical Specifications
Casing Material
Dimensions
Weight
Cooling Method
Epoxy resin (UL94-V0)
12.70*11.20*7.25 mm
1.6g(Typ.)
Free convection
EMC Specifications
EMI
EMS
CE
RE
ESD
CISPR22/EN55022
CISPR22/EN55022
IEC/EN61000-4-2
CLASS B (see Fig. 4 for recommended circuit)
CLASS B (see Fig. 4 for recommended circuit)
Contact
±8KV perf. Criteria B
2015.04.17-A/2
Page 2 of 5
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
B_XT-2WR2 Series
Product Characteristic Curve
3.3VDC output
Output Voltage
Accuracy
(%)
Output Voltage
Accuracy
(%)
+10%
+5%
0
-5%
-10%
-15%
10% 20%
40%
60%
80%
Other output
+15%
+10%
+5%
0
-5%
-10%
10% 20%
40%
60%
80%
Tolerance Envelope Cur ve
Max .
+1.0%
Tolerance Envelope Curve
Max .
Ty p
.
M i n.
+2.5%
-2.5%
-7.5%
Ty p
.
-7.5%
M i n.
-15%
100%
100%
Output Current Perc entage(%)
(Nominal Input Voltage)
Output Current Percent(%)
(Nominal Input Voltage)
Fig. 1
Temperature Derating Cur ve
Output P ower Percent(%)
120
100
80
60
50 Safe Ope ratin g Area
40
20
0
-40
40
71 85 105
0
Ambient Temp.(
℃
)
Fig. 2
Other output
5V out put
100
95
90
Efficiency Vs Input Voltage (Full Load)
Efficiency Vs Output Load(Vin=5V)
100
90
80
B0505XT-2WR2
Efficiency(%)
Efficiency(%)
85
80
75
70
65
60
55
50
4.5 4.6 4.7 4.8 4.9
5
5.1 5.2 5.3 5.4 5.5
B0505XT-2WR2
70
60
50
40
30
20
10
0
10
20
30
40
50
60
70
80
90
100
Input Voltage(V)
Output Current Percentage(%)
Efficiency Vs Input Voltage (Full Load)
100
95
90
Efficiency Vs Output Load(Vin=12V)
100
90
80
B1212XT-2WR2
Efficiency(%)
80
75
70
65
60
55
50
B1212XT-2WR2
Efficiency(%)
85
70
60
50
40
30
20
10
0
10.8 11.0 11.3 11.8 12.0 12.2 12.5 12.8 13.0 13.2
10
20
30
40
50
60
70
80
90
100
Input Voltage(V)
Output Current Percentage(%)
2015.04.17-A/2
Page 3 of 5
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
B_XT-2WR2 Series
Design Reference
1. Typical application circuit
If it is required to further reduce input and output ripple, a filter capacitor may be connected to the input and output terminals, see Fig.3.
Moreover, choosing a suitable filter capacitor is very important, start-up problems may be caused if the capacitance is too large. Under the
condition of safe and reliable operation, the recommended capacitive load values are shown in Table 1.
Recommended capacitive load value table (Table 1)
Vin(VDC)
Cin(μF)
Vo (VDC)
Cout(μF)
5
4.7
3.3
10
12
2.2
5
10
15
2.2
9
4.7
24
1
12
2.2
--
--
15
1
--
--
24
0.47
Input voltage (VDC)
C1
C2
EMI
C3
CY
LDM
5/12/15
24
Vin
C in
GND
+Vo
DC
DC
C out
0V
Fig.3
2. EMC solution-recommended circuit
LDM
Vin
Vin
+Vo
C3
LOAD
C1
GND
C2
DC/DC
GND
0V
4.7μF /50V
4.7μF /50V
Refer to the Cout in Fig.3
--
1nF/2KV
6.8μH
Fig. 4
CY
Notes: 1. 24V input series, 24V output series is subject to CY (CY : 1nF/2KV).
2. It is not needed to add the component in the peripheral circuit when
parameter with the symbol of "--".
3. Output load requirements
When using, the minimum load of the module output should not be less than 10% of the nominal load. In order to meet the performance
parameters of this datasheet, please connect a 10% dummy load in parallel at the output end, the dummy load is generally a resistor,
Please note that the resistor needs to be used in derating.
4. For more information please find DC-DC converter application notes on
www.mornsun-power.com
Dimensions and Recommended Layout
THIRDANGLEPROJECTION
12.70±0.50[0.500±0.020]
7.62[0.300]
7.62[0.300]
8
5
11.20[0.441]
8.30[0.327]
2.10[0.083]
0.25[0.010]
8
5
TopView
1
2
4
A
0~5
°
TopView
1
2
4
0.60[0.024]
2.54[0.100]
1.00[0.039]
2.54[0.100]
Note:Grid2.54*2.54mm
7.25[0.285]
7.00[0.276]
FrontView
RightView
A
0.88[0.035]
0.10
Note:
Unit:mm[inch]
Pinsectiontolerances:±0.10[±0.004]
Generaltolerances:±0.25[±0.010]
Pin
1
2
4
5
8
Pin-Out
Function
GND
Vin
0V
+Vo
NC
NC:NoConnection
2BXT1WR201-A0
12.20[0.480]
2015.04.17-A/2
Page 4 of 5
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
B_XT-2WR2 Series
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
Packing information please refer to Product Packing Information which can be downloaded from
www.mornsun-power.com.
Packing
bag number: 58210024;
If the product is not operated within the required load range, the product performance cannot be guaranteed to comply with all
parameters in the datasheet;
The maximum capacitive load offered were tested at nominal input voltage and full load;
Unless otherwise specified, parameters in this datasheet were measured under the conditions of Ta=25
℃
, humidity<75% with nominal
input voltage and rated output load;
All index testing methods in this datasheet are based on our Company’s corporate standards;
The performance parameters of the product models listed in this manual are as above, but some parameters of non-standard model
products may exceed the requirements mentioned above. Please contact our technicians directly for specific information;
We can provide product customization service;
Specifications are subject to change 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: info@mornsun.cn
2015.04.17-A/2
Page 5 of 5
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
京公网安备 11010802033920号
EEWORLD
