DC/DC Converter
B_(X)T-1W series
1W, Fixed input voltage , isolated & unregulated single
output
FEATURES
Operating temperature range: -40℃ to +85℃
Isolation voltage: 1K VDC
SMD package
Internal surface mounted design
International standard pin-out
Patent Protection
RoHS
B_(X)T-1W 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
≤1000VDC);
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 IGBT power device driving circuits.
Selection Guide
Input Voltage (VDC)
Part No.
B0303(X)T-1W
B0305(X)T-1W
B0309(X)T-1W
B0312T-1W
B0315T-1W
B0324T-1W
B0503(X)T-1W
B0505(X)T-1W
B0506(X)T-1W
B0507T-1W
B0509(X)T-1W
B0512(X)T-1W
B0515(X)T-1W
B0524(X)T-1W
B1203(X)T-1W
B1205(X)T-1W
B1209(X)T-1W
B1212(X)T-1W
B1215(X)T-1W
B1224T-1W
B1505(X)T-1W
B1515(X)T-1W
B2403(X)T-1W
B2405(X)T-1W
B2409(X)T-1W
B2412(X)T-1W
B2415(X)T-1W
B2424(X)T-1W
24
(21.6-26.4)
15
(13.5-16.5)
12
(10.8-13.2)
5
(4.5-5.5)
3.3
(2.97-3.63)
Nominal
(Range)
(VDC)
3.3
5
9
12
15
24
3.3
5
6
7.2
9
12
15
24
3.3
5
9
12
15
24
5
15
3.3
5
9
12
15
24
Output
Output Voltage
Output Current
(mA)(Max./Min.)
303/30
200/20
111/12
84/9
67/7
42/4
303/30
200/20
167/17
139/14
111/12
84/9
67/7
42/4
303/30
200/20
111/12
84/9
67/7
42/4
200/20
67/7
300/30
200/20
111/12
83/8
67/7
42/4
Efficiency
(%,
Min./T
yp.)
@ Full Load
69/73
70/74
66/70
74/78
72/76
74/78
68/72
73/77
65/69
71/75
72/76
75/79
74/78
75/79
67/71
65/69
69/73
69/73
70/74
75/79
58/62
72/76
65/69
66/70
68/72
71/75
72/76
73/77
220
UL/CE
UL/CE
UL/CE
UL/CE
UL/CE
UL/CE
UL/CE
UL/CE
Max. Capacitive
Load (μF)
Certification
UL
UL
Notes: 1. The B_XT-1W series have no 3,6,7 pin, For example B0505XT-1W.
2. B_XT-1W series: UL-60950-1 pending.
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DC/DC Converter
B_(X)T-1W series
Input Specifications
Item
Operating Conditions
3.3VDC input
5VDC input
Input Current (full load / no-load)
12VDC input
15VDCinput
24VDC input
3.3VDC input
5VDC input
Surge Voltage (1sec. max.)
12VDC input
15VDC input
24VDC input
Input Filter
Min.
--
--
--
--
--
-0.7
-0.7
-0.7
-0.7
-0.7
Typ.
404/20
258/20
110/15
90/10
52/7
--
--
--
--
--
Max.
--
--
--
--
--
5
9
18
21
30
VDC
mA
Unit
Capacitor filter
Output Specifications
Item
Output Voltage Accuracy
Line Regulation
Input voltage
change:±1%
3.3VDC output
Other output
3.3VDC output
5/6/7.2VDC output
Load Regulation
10%-100% load
9VDC output
12VDC output
15VDC output
24VDC output
Ripple & Noise*
Temperature Drift Coefficient
Output Short Circuit Protection**
20MHz bandwidth
100% load
Operating Conditions
Min.
--
--
--
--
--
--
--
--
--
--
--
Typ.
--
--
15
12.8
8.3
6.8
6.3
5
50
--
--
Max.
±1.5
±1.2
20
15
10
10
10
10
75
±0.03
1
mVp-p
%/℃
s
%
Unit
See tolerance envelope graph (Fig. 1)
--
Note: * 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.
General Specifications
Item
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Operating Temperature
Storage Temperature
Casing Temperature Rise
Pin Welding Resistance Temperature
Reflow Soldering Temperature
Storage Humidity
Switching Frequency
MTBF
Non-condensing
100% load, nominal input
voltage
MIL-HDFK-217F@25℃
Other input
24VDC input
Ta=25℃
Welding spot is 1.5mm away from the casing, 10 seconds
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
B2424(X)T-1W
Other models
Min.
1000
1000
--
--
-40
-55
--
--
Typ.
--
--
50
30
--
--
25
--
Max.
--
--
--
--
85
125
--
300
℃
Unit
VDC
MΩ
pF
Derating if the temperature
≥85℃,
(see Fig. 2)
Peak temp.≤245℃, maximum duration
time≤60s at 217℃.
For actual application, please refer to
IPC/JEDEC J-STD-020D.1.
--
--
--
3500
--
100
500
--
95
--
--
--
%
KHz
K hours
2014.05.22-B/3
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DC/DC Converter
B_(X)T-1W series
Physical Specifications
Casing Material
Package Dimensions
Weight
Cooling Method
Black flame-retardant heat-proof epoxy resin (UL94-V0)
12.70*11.20*6.25mm
1.4g(Typ.)
Free air convection
EMC Specifications
EMI
EMS
Conducted disturbance
Electrostatic discharge
CISPR22/EN55022
IEC/EN61000-4-2
CLASS A (see Fig. 5 for recommended circuit)
Contact
±6KV
perf. Criteria B
Product Characteristic Curve
+10%
+5%
Rated
Output Voltage
Output Voltage
Accuracy
(%)
Output Power Per centage(%)
Tolerance Envelope Graph
Ty p ic a
l L o ad
Temperatu re Derating Graph
120
100
80
60
40
20
0
-40
40
85 105 120
0
Ambi ent Temperature(
℃
)
Safe Operati ng Area
Cur ve
+2.5%
-2.5%
-7.5%
50
70
100
Output Current Percentage(%)
(Nominal Input Voltage)
Fig. 1
100
95
90
Fig. 2
100
90
80
Efficiency Vs Input Voltage (Full Load)
Efficiency Vs Output Load(Vin=5V)
Efficiency(%)
80
75
70
65
60
55
50
4.6
4.7
4.8
4.9
5.0
5.1
5.2
5.3
5.4
5.5
B0505T-1W
Efficiency(%)
85
70
60
50
40
30
20
10
0
10
20
30
40
50
60
70
80
90
100
B0505T-1W
Input Voltage(V)
100
95
90
Output Current Percentage(%)
Efficiency Vs Input Voltage(Full Load)
100
90
80
Efficiency Vs Output Load(Vin=24V)
Efficiency(%)
80
75
70
65
60
55
50
22.0
22.5
23.0
23.5
24.0
24.5
25.0
25.5
26.0
26.5
B2405T-1W
Efficiency(%)
85
70
60
50
40
30
20
10
0
10
20
30
40
50
60
70
80
90
B2405T-1W
Input Voltage(V)
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 regulator and an capacitor filtering
network with overheat protection that is connected to the input or output end in series (see Fig.4)
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DC/DC Converter
B_(X)T-1W series
Vin
C in
GND
+Vo
DC
DC
Vin
C out
0V
REG
REG
+Vo
GND
DC DC
Fig.4
Fig.3
Recommended capacitive load value table (Table 1)
Vin(VDC)
Cin(μF)
Vo (VDC)
Cout(μF)
3.3/5
4.7
3.3/5/6
10
12
2.2
7.2/9
4.7
15
2.2
12
2.2
24
4.7
15
1
-
--
24
0.47
0V
It is not recommended to connect any external capacitor when output power is less than 0.5W.
2. EMC typical recommended circuit
Vin
C1
GND
Vin
+Vo
C2
LOAD
DC/DC
GND
0V
Input voltage (V)
C1
EMI
C2
3.3/5/12/15
24
2.2μF /50V
4.7μF /50V
Refer to the Cout in Fig.3
Note: Product bare input of 3.3V, 5V, 12V already meet CLASS A,
increase the capacitor margin increase.
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.
Fig. 5
4. For more information please find the application notes on www.mornsun-power.com
Dimensions and Recommended Layout
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DC/DC Converter
B_(X)T-1W series
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
Packing Information please refer to 'Product Packing Information'. Packing bag number: 58200021;
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;
The max. capacitive load should be tested within the input voltage range and under full load conditions;
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;
All index testing methods in this datasheet are based on our Company’s corporate standards;
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;
We can provide product customization service;
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:
info@mornsun.cn
2014.05.22-B/3
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