DC/DC Converter
B_S-1WR2 & B_D-1WR2 series
1W isolated DC-DC with Fixed Input Voltage;
unregulated Single Output
FEATURES
Continuous short-circuit protection
High efficiency up to 80%
Operating ambient temperature -40℃ to +105℃
Compact SIP/DIP package
Industry standard pin-out
I/O isolation test voltage 1.5k VDC
CB
Patent Protection
RoHS
IEC60950, UL60950, EN60950 approval
B_S-1WR2 & B-D-1WR2 series is designed for use in distributed power supply systems and especially suitable in applications such as pure
digital circuits, low frequency analog circuits, relay-driven circuits and data switching circuits, where:
1. The voltage of the input power supply is relatively stable with a variation of ±10%Vin or less;
2. An input to output isolation voltage of up to 1500VDC is necessary;
3. The requirement for a tight output regulation and low ripple & noise is not as strict.
Selection Guide
Input Voltage (VDC)
Certification
--
UL/CE/CB
Part No.
B0303S-1WR2
B0305S-1WR2
B0312S-1WR2
B0303D-1WR2
--
B0305D-1WR2
B0503S-1WR2
B0505S-1WR2
B0509S-1WR2
UL/CE/CB
B0512S-1WR2
B0515S-1WR2
B0524S-1WR2
--
B0503D-1WR2
B0505D-1WR2
B0509D-1WR2
UL/CE/CB
B0512D-1WR2
B0515D-1WR2
B0524D-1WR2
--
B1203S-1WR2
B1205S-1WR2
B1209S-1WR2
UL/CE/CB
B1212S-1WR2
B1215S-1WR2
B1224S-1WR2
--
B1203D-1WR2
B1205D-1WR2
UL/CE/CB
B1209D-1WR2
B1212D-1WR2
B1215D-1WR2
B1505S-1WR2
--
B1512S-1WR2
B1515S-1WR2
15
(13.5-16.5)
12
(10.8-13.2)
5
(4.5-5.5)
3.3
(2.97-3.63)
Nominal
(Range)
Voltage
(VDC)
3.3
5
12
3.3
5
3.3
5
9
12
15
24
3.3
5
9
12
15
24
3.3
5
9
12
15
24
3.3
5
9
12
15
5
12
15
Output
Current (mA)
Max./Min.
303/30
200/20
84/9
303/30
200/20
303/30
200/20
111/12
84/9
67/7
42/4
303/30
200/20
111/12
84/9
67/7
42/4
303/30
200/20
111/12
84/9
67/7
42/4
303/30
200/20
111/12
84/9
67/7
200/20
84/9
67/7
Full Load
Efficiency (%)
Min./Typ.
68/72
72/76
76/80
68/72
72/76
68/72
76/80
76/80
76/80
76/80
76/80
68/72
76/80
76/80
76/80
76/80
76/80
68/72
76/80
76/80
76/80
76/80
76/80
68/72
76/80
76/80
76/80
76/80
76/80
76/80
76/80
220
220
Capacitive
Load(µF)
Max.
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DC/DC Converter
B_S-1WR2 & B_D-1WR2 series
B1505D-1WR2
--
B1509D-1WR2
B1515D-1WR2
B2403S-1WR2
B2405S-1WR2
B2409S-1WR2
UL/CE/CB
B2412S-1WR2
B2415S-1WR2
B2424S-1WR2
--
B2403D-1WR2
B2405D-1WR2
B2409D-1WR2
UL/CE/CB
B2412D-1WR2
B2415D-1WR2
B2424D-1WR2
24
(21.6-26.4)
15
(13.5-16.5)
5
9
15
3.3
5
9
12
15
24
3.3
5
9
12
15
24
200/20
111/12
67/7
303/30
200/20
111/12
84/9
67/7
42/4
303/30
200/20
111/12
84/9
67/7
42/4
76/80
76/80
76/80
68/72
76/80
76/80
76/80
76/80
76/80
68/72
76/80
76/80
76/80
76/80
76/80
220
Input Specifications
Item
Operating Conditions
3.3V input
Input Current
(full load / no-load)
5V input
12V input
15V input
24V input
Reflected Ripple Current
3.3 input
5V input
Surge Voltage (1sec. max.)
12V input
15V input
24V input
Input Filter
Hot Plug
Min.
--
--
--
--
--
--
-0.7
-0.7
-0.7
-0.7
-0.7
Typ.
404/30
277/20
115/15
83/10
57/17
15
--
--
--
--
--
Max.
--/70
--/60
--/50
--/35
--/30
--
5
9
18
21
30
Unavailable
VDC
mA
mA
Unit
Filter capacitor
Output Specifications
Item
Voltage Accuracy
Linear 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
B03xxS-1WR2/B03xxD-1WR2/B24xxS-1WR2/
B24xxD-1WR2/B0524S-1WR2/ B0524D-1WR2
Others
--
--
--
--
--
--
--
--
--
--
--
Operating Conditions
Min.
Typ.
--
--
18
12
8
7
6
5
60
--
--
Max.
±1.5
±1.2
--
--
--
--
--
--
150
±0.03
1
mVp-p
%/℃
s
%
Unit
See Output Regulation Curves (Fig. 1)
--
Continuous, self-recovery
Notes: * The “parallel cable” method is used for Ripple and Noise test, please refer to
DC-DC Converter Application Notes
for specific information.
** At the end of the short circuit duration, the supply voltage must be disconnected from following models: B03xxS-1WR2 / B03xxD-1WR2 series,
B24xxS-1WR2/ B24xxD-1WR2 series, and B0524S-1WR2/B0524D-1WR2.
2018.12.05-B/2
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
B_S-1WR2 & B_D-1WR2 series
General Specifications
Item
Isolation
Insulation Resistance
Isolation Capacitance
Operating Temperature
Storage Temperature
Case Temperature Rise
Pin Soldering Resistance
Temperature
Storage Humidity
Switching Frequency
MTBF
Ta=25℃, nominal input, full load output
Soldering spot is 1.5mm away from case for 10
seconds
Non-condensing
Full load, nominal input voltage
MIL-HDBK-217F @ 25℃
Operating Conditions
Input-output Electric strength test for 1 minute
with a leakage current of 1mA max.
Input-output resistance at 500VDC
Input-output capacitance at 100kHz/0.1V
Derating when operating temperature up to
85℃, (see Fig. 2)
Min.
1500
1000
--
-40
-55
--
--
--
--
3500
Typ.
--
--
20
--
--
25
--
--
100
--
Max.
--
--
--
105
125
--
300
95
--
--
%RH
kHz
k hours
℃
Unit
VDC
MΩ
pF
Mechanical Specifications
Case Material
Dimensions
Weight
Cooling Method
B_S-1WR2 series
B_D-1WR2 series
B_S-1WR2 series
B_D-1WR2 series
Black plastic; flame-retardant and heat-resistant (UL94-V0)
11.60 x 6.00 x 10.16 mm
12.70 x 10.16 x 8.20 mm
1.3g (Typ.)
1.8g (Typ.)
Free air convection
Electromagnetic Compatibility (EMC)
Emissions
Immunity
CE
RE
ESD
CISPR32/EN55032 CLASS B (see Fig. 4 for recommended circuit)
CISPR32/EN55032 CLASS B (see Fig. 4 for recommended circuit)
IEC/EN61000-4-2
Contact ±8KV
perf. Criteria B
Typical Performance Curves
3.3VDC output
All other output voltages
Fig. 1
2018.12.05-B/2
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DC/DC Converter
B_S-1WR2 & B_D-1WR2 series
Temperature Derating Curve
Output Power Percent(%)
120
100
80
60
40
20
0
-40
0
40
85 105 120
Safe Operating Area
Ambient Temp.(
℃
)
Fig. 2
Design Reference
1. Typical application
Input and/or output ripple can be further reduced, by connecting a filter capacitor from the input and/or output terminals to ground as
shown in Fig.3.
Choosing suitable filter capacitor values is very important for a smooth operation of the modules, particularly to avoid start-up problems
caused by capacitor values that are too high. For recommended input and output capacitor values refer to Table 1.
Table 1: Recommended input and output capacitor values
Vin(VDC)
Vin
GND
Cin
Cin(µF)
4.7
2.2
2.2
1
--
Vo (VDC)
3.3/5
9
12
15
24
Cout(µF)
10
4.7
2.2
1
0.47
+Vo
3.3/5
12
15
24
--
DC DC
Fig.3
Cout
0V
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DC/DC Converter
B_S-1WR2 & B_D-1WR2 series
2. EMC (CLASS B) compliance circuit
LDM
Vin
C1
GND
Vin
+Vo
C2
LOAD
Input voltage (VDC)
C1
EMI
C2
LDM
3.3/5/12/15/24
4.7µF /50V
Refer to the Cout in Fig.3
6.8µH
DC/DC
GND
0V
Fig. 4
3. Minimum Output Load Requirement
For a reliable and efficient operation of the converter, the minimum load should never be less than 10% of the rated output load. If the total
required output power is below 10%, a parallel bleeding resistor is required on the output, ensuring that the sum of the power consumption is
always maintained at 10% minimum.
4. For additional information, please refer to DC-DC converter application notes on
www.mornsun-power.com
Dimensions and Recommended Layout (B_S-1WR2)
THIRD ANGLE PROJECTION
0.50 [0.020]
Front View
10.16 [0.400]
1
2
3
4
4.10 [0.161]
∅
1.00 [
∅
0.039]
7.62 [0.300]
2.54 [0.100]
0.50 [0.020]
0.90 [0.035]
Note：Grid 2.54*2.54mm
Pin-Out
Pin
Function
GND
Vin
0V
+Vo
1
2
3
4
0.30 [0.012]
1
2
3
4
Bottom View
11.60 [0.457]
6.00 [0.236]
Note:
Unit :mm[inch]
Pin section tolerances :±0.10[±0.004]
General tolerances:±0.25[±0.010]
1100000301-B0
2018.12.05-B/2
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