B_(X)T-2W Series
2W, FIXED INPUT, ISOLATED & UNREGULATED
SINGLE OUTPUT DC-DC CONVERTER
FEATURES
●
Small Footprint
●
SMD Package
●
1KVDC Isolation
●
Operating Temperature Range:
-40°C ~ +85°C
●
Low Temperature Rise
●
No External Component Required
●
Industry Standard Pinout
Patent Protection RoHS
PART NUMBER SYSTEM
APPLICATIONS
The B_(X)T-2W Series are designed for application
where isolated output is required from a distributed power
system.
These products apply to where:
1)
2)
3)
Input voltage variation
≤ ±10%.
1KVDC input and output isolation.
B0505(X)T-2W
Rated Pow er
Packa ge St yle
Out put Volta ge
Inp ut Voltage
Produc t Seri es
Regulated and low ripple noise is not required.
Such as: digital circuits, low frequency analog circuits,
and IGBT power device driving circuits.
SELECTION GUIDE
Model
Input
Voltage(VDC)
Nominal
(Range)
Output
Voltage
(VDC)
3.3
5
5
(4.5-5.5)
9
12
15
5
12
(10.8-13.2)
12
15
24
15(13.5-16.5)
15
5
24
(21.6-26.4)
12
15
24
Output Current
(mA)
Max.
400
400
222
167
133
400
167
133
84
133
400
167
133
84
Min.
40
40
23
17
14
40
17
14
8
14
40
17
14
9
Input Current
(mA)(typ.)
@Max.
@No
Load
Load
370
483
478
16
476
474
210
191
10
192
193
165
102
98
7
95
95
22
81
80
10
14
12
220
81
87
81
78
80
79
80
78
80
45
32
Reflected
Ripple
Current
(mA,typ.)
Max.
Capacitive
Load(µF)
Efficiency
(%, typ.)
@Max. Load
71
78
79
Approval
B0503(X)T-2W
B0505(X)T-2W
B0509(X)T-2W
B0512(X)T-2W
B0515(X)T-2W
B1205(X)T-2W
B1212(X)T-2W
B1215(X)T-2W
B1224T-2W
B1515T-2W
B2405(X)T-2W
B2412(X)T-2W
B2415(X)T-2W
B2424(X)T-2W
Note:
The B_XT-2W series have no 3,6,7 pin, For example B0505XT-2W.
INPUT SPECIFICATIONS
Item
Test Conditions
5VDC input
Input Surge Voltage (1sec. max.)
12VDC input
15VDC input
24VDC input
Input Filter
Min.
-0.7
-0.7
-0.7
-0.7
Typ.
--
--
--
--
Max.
9
18
21
30
VDC
Unit
Capacitance Filter
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B_(X)T-2W
B/0-2013
Page 1 of 5
OUTPUT SPECIFICATIONS
Item
Output Voltage Accuracy
Line Regulation
For Vin change of
±1%
3.3VDC output
5VDC output
Load Regulation
10% to 100% load
9VDC output
12VDC output
15VDC output
24VDC output
Temperature Drift
Ripple & Noise*
Short Circuit Protection**
100% load
20MHz Bandwidth
--
--
--
--
--
--
--
--
--
--
Test Conditions
Min.
Typ.
Max.
±1.2
20
15
15
15
15
15
±0.03
200
1
%/°C
mVp-p
s
%
Unit
See tolerance envelope curve
--
12
12.8
8.3
6.8
6.3
6.3
--
100
--
Note: 1.
*
Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at Testing of Power Converter section, application notes.
2.**Supply voltage must be discontinued at the end of short circuit duration.
COMMON SPECIFICATIONS
Item
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Switching Frequency
MTBF
Case Material
Weight
--
Test Conditions
Tested for 1 minute and leakage current less than 1 mA
Test at 500VDC
Input/Output,100KHz/0.1V
Full load, nominal input
MIL-HDBK-217F@25℃
B2424(X)T-2W
Other Models
Min.
1000
1000
--
--
--
3500
Typ.
--
--
100
30
500
--
Max.
--
--
--
--
--
--
KHz
K hours
Unit
VDC
MΩ
pF
Epoxy Resin (UL94-V0)
1.4
--
g
ENVIRONMENTAL SPECIFICATIONS
Item
Storage Humidity
Operating Temperature
Storage Temperature
Temp. rise at full load
Lead Temperature
Cooling
1.5mm from case for 10 seconds
Test Conditions
Non condensing
Power derating (above 85℃)
Min.
--
-40
-55
--
--
Typ.
--
--
--
25
--
Max.
95
85
125
--
300
°C
Unit
%
Free air convection
EMC SPECIFICATIONS
EMI
EMS
CE
ESD
CISPR22/EN55022
IEC/EN61000-4-2
CLASS A（External Circuit Refer to Figure1）
Contact
±8KV
perf. Criteria B
EMC RECOMMENDED CIRCUIT
EMI Typical Recommended Circuit:
Vin
Vin
+ Vo
C1
GND
EUT
GND
0V
LO AD
Recommended external circuit parameters:
①Vin：
5V/12V/15V
C1：2.2µF/50V
②Vin：24V
C1：4.7µF/50V
(Figure 1)
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B_(X)T-2W
B/0-2013
Page 2 of 5
PRODUCT TYPICAL CURVE
Tolerance Envelope Curve
Output Power Percent(%)
+10 %
+5%
Rated
Outp ut
Volta ge
Output Voltage
Accuracy
(%)
Tempe ra tu re Derating Cu rve
120
100
80
60
Safe Operating Area
40
20
0
-40
0
40
85 105 120
Ambi ent Temp.(
℃
)
Ty p i c
al Loa
d L i ne
+2.5%
-2.5%
-7.5%
50
70
10 0
Outp ut Cu rren t Perce nt(%)
(Nominal Input Voltage)
Efficiency VS Input Voltage curve
(Full Load)
B0505T-2W
100
90
80
70
60
50
40
30
20
10
0
4.6
4.7
4.8
4.9
5.0
5.1
5.2
5.3
5.4
5.5
Efficiency VS Output Load curve
(Vin=Vin-nominal)
B0505T-2W
100
90
80
70
60
50
40
30
20
10
0
10
20
30 40
50
60
70
80
90 100
Efficiency(%)
Efficiency(%)
Input Voltage(V)
Total Output Current (% )
Efficiency VS Input Voltage curve
(Full Load)
B2405T-2W
100
90
80
70
60
50
40
30
20
10
0
22.0
22.5
23.0
23.5
24.0
24.5
25.0
25.5
26.0
26.5
Efficiency VS Output Load curve
(Vin=Vin-nominal)
B2405T-2W
100
90
80
70
60
50
40
30
20
10
0
10
20
30 40
50
60
70
80
90 100
Efficiency(%)
Efficiency(%)
Input Voltage(V)
Total Output Current (% )
Recommended reflow Soldering Profile
250
Te m p e r a tu r e (
o
C )
200
150
100
50
0
Tim e ( s e c . )
Note: The curve applies only to the hot air reflow soldering
260 C
10 Sec M ax
o
220 C
o
90 Sec Max
o
(>220 C)
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B_(X)T-2W
B/0-2013
Page 3 of 5
TEST CONFIGURATIONS
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with an inductor Lin and Capacitor Cin to simulate source impedance.
Oscilloscope
Lin
Cin
Current
Probe
DC DC
Load
Lin(4.7µH)
Cin(220µF, ESR < 1.0Ω at 100 KHz)
DESIGN CONSIDERATIONS
1) Requirement on output load
To ensure this module can operate efficiently and reliably, During operation, the minimum output load
could not be less than 10% of the full load.
If the actual output power is very small, please connect a resistor with proper resistance at the output end in parallel to increase the load, or use our
company’s products with a lower rated output power.
2) Overload Protection
Under normal operating conditions, the output circuit of these products has no protection against overload. The simplest method is add a circuit
breaker to the circuit.
3) Recommended circuit
If you want to further decrease the input/output ripple, an capacitor filtering network may be connected to the input and output ends of the DC/DC
converter, see (Figure 2).
It should also be noted that the capacitance of 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 recommended capacitance of its filter capacitor sees (Table 1).
+Vo
Vin
Cin
DC DC
(Figure 2)
C out
GND
0V
EXTERNAL CAPACITO2 TABLE (Table 1)
Vin
Cin
Vout
Cout
(VDC)
(µF)
(VDC)
(µF)
5
4.7
3.3/5
10
12
15
2.2
1
9/12
15
2.2
1
24
0.47
24
0.47
It’s not recommended to connect any external capacitor in the application field with less than 0.5 watt output.
4) Output Voltage Regulation and Over-voltage Protection Circuit
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 (Figure 3), the recommended capacitance of its filter capacitor sees
(Table 1), linear regulator based on the actual voltage and current to reasonable selection.
Vin
GND
REG
REG
+Vo
DC DC
0V
(Figure 3)
5) Cannot use in parallel and hot swap
Note:
1.
2.
3.
4.
5.
6.
7.
Operation under minimum load will not damage the converter; However, they may not meet all specification listed.
Max. Capacitive Load tested at input voltage range and full load.
All date in the datasheet are measured according to nominal input voltage, rated output load, TA=25
℃
, humidity<75%, unless otherwise specified .
In this datasheet, all the test methods of indications are based on our corporate standards.
The performance in the datasheet is just fit for the part number in the selection guide, and may be different from the customer-designed product,
you can get more details from MORNSUN FAE.
Contact us for your specific requirement.
Specifications subject to change without prior notice.
MORNSUN 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
Fax:86-20-38601272
Http://www.mornsun-power.com
The copyright and authority for the interpretation of the products are reserved by MORNSUN
B_(X)T-2W
B/0-2013
Page 5 of 5
Analogue and Mixed Signal
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