B_S(D)-W2 Series
0.25W, FIXED INPUT, ISOLATED & UNREGULATED
SINGLE OUTPUT DC-DC CONVERTER
RoHS
FEATURES
●
SIP/DIP Package
●
1KVDC Isolation
●
Temperature Range: -40°C ~ +85°C
●
No Heatsink Required
●
Internal SMD Construction
●
No External Component Required
●
Industry Standard Pinout
●
RoHS Compliance
PRODUCT PROGRAM
Input
Part
Number
B0303S/D-W2*
B0305S/D-W2
B0503S/D-W2
B0505S/D-W2
B0509S/D-W2
B0512S/D-W2
B0515S/D-W2
5
4.5-5.5
Voltage (VDC)
Nominal
3.3
Range
2.97-3.63
Voltage
(VDC)
3.3
5
3.3
5
9
12
15
3.3
12
10.8-13.2
5
12
15
5
24
21.6-26.4
12
15
Output
Current (mA)
Max.
76
50
76
50
28
21
17
76
50
21
17
50
21
17
Min.
8
5
8
5
3
2
2
8
5
2
2
5
2
2
62
64
64
64
65
65
65
62
63
65
66
63
65
66
Efficiency
(%, Typ)
APPLICATIONS
The B_S-W2/B_D-W2 series are specially
designed for applications where a group of polar
power supplies are isolated from the input power
supply in a distributed power supply system on a
circuit board.
These products apply to:
1) Where the voltage of the input power supply
is fixed (Voltage variation
≤ ±10%);
2) Where isolation is necessary between input
and output (Isolation voltage
≤1000VDC);
3) Where the regulation of the output voltage
and
the
output
ripple
noise
are
not
demanding.
Such as: purely digital circuits, ordinary low
frequency analog circuits, and IGBT power
device driving circuits.
B1203S/D-W2
B1205S/D-W2
B1212S/D-W2
B1215S/D-W2
B2405S/D-W2
B2412S/D-W2
B2415S/D-W2
Note:
1.Models listed with strike-through text have been officially discontinued.
2.*Designing.
COMMON SPECIFICATIONS
Item
Storage humidity
Operating temperature
Storage temperature
Temp. rise at full load
Lead temperature
Cooling
Case material
1.5mm from case for 10 seconds
-40
-55
15
Test conditions
Min.
Typ.
Max.
95
85
125
25
300
Free air convection
Plastic(UL94-V0)
1
3500
B_S-W2 Series
B_D-W2 Series
*Supply voltage must be discontinued at the end of short circuit duration.
Units
%
°C
MODEL SELECTION
Short circuit protection*
MTBF
Weight
s
k hours
B0505S-W2
Rated Power
Packa ge Style
Output Voltage
Inp ut Voltage
Produc t Series
1.2
1.8
g
ISOLATION SPECIFICATIONS
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
Item
Isolation voltage
Isolation resistance
Isolation capacitance
Test conditions
Tested for 1 minute and 1mA max
Test at 500VDC
Min.
1000
1000
Typ.
Max.
Units
VDC
MΩ
85
pF
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
B_S(D)-W2
B/2-2012
Page 1 of 3
OUTPUT SPECIFICATIONS
Item
Output power
Line regulation
For Vin change of
±1%(3.3V
output)
For Vin change of
±1%(others
output)
10% to 100% load(3.3V output)
10% to 100% load (5V output)
Load regulation
10% to 100% load (9V output)
10% to 100% load (12V output)
10% to 100% load (15V output)
Output voltage accuracy
Temperature drift
Ripple & Noise*
100% full load
20MHz Bandwidth
50
110
15
12.8
8.3
6.8
6.3
Test conditions
Min.
Typ.
Max.
0.25
±1.5
±1.2
20
15
15
15
15
±0.03
75
%
Units
W
TYPICAL CHARACTERISTICS
See tolerance envelope graph
%/°C
mVp-p
kHz
Switching frequency Full load, nominal input
*Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at Testing of
Power Converter section, application notes.
Operating Temp.(
o
C)
APPLICATION NOTE
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.
RECOMMENDED CIRCUIT
L
Vin
Cin
GND
L
+Vo
DC DC
Cout
0V
(Figure 1)
2) Recommended circuit
If you want to further decrease the input/output ripple, an
“LC”
filtering network may be
connected to the input and output ends of the DC/DC converter, see (Figure 1).
It should also be noted that the inductance and the frequency of the
“LC”
filtering network
should be staggered with the DC/DC frequency to avoid mutual interference. However, the
capacitance of the output filter capacitor must be proper. If the capacitance is too big, a
startup problem might arise. It’s not recommended to connect any external capacitor in the
application field.
GND
Vin
REG
Vin
GND
REG
+Vo
DC DC
0V
+Vo
DC DC
0V
(Figure 2)
3) Output Voltage Regulation and Over-voltage Protection Circuit
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 (Figure 2).
4) Overload Protection
Under normal operating conditions, the output circuit of these products has no
protection against overload. The simplest method is to connect a self-recovery fuse in
series at the input end or add a circuit breaker to the circuit.
5) No parallel connection or plug and play
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
B_S(D)-W2
B/2-2012
Page 2 of 3
OUTLINE DIMENSIONS & PIN CONNECTIONS
MECHANICAL DIMENSIONS
B
_
S Ser ies
0.50 [0.0 20]
10.00[0.394]
8.20[0.323]
7.70[0.3 03]
RECOMMENDED FOOTPRINT
B
_
D Series
B
_
S Series
(Fron t View)
1
2
3
4
(Front V iew)
4.10 [0.161]
4.10 [0.161]
7.62 [0.3 00]
5.08 [0.200]
B
_
D Series
∅1.00
[0.0 39]
7
5
12.70 [0.500]
7.62[0.300]
10.00[0.3 94]
7.62[0.3 00]
11.60[0.4 61]
0.50[0 .020]
1
2
3
4
0.90 [0.035]
6 .00[0.236]
0.30[0.012 ]
1
4
1
4
Note
:
grid 2.54*2.54mm
.
(Botto m View)
7
5
0.3 0 [0.012]
(Bottom V iew)
TUBE OUTLINE DIMENSIONS
B
_
S Series
B
_
D Series
12.50 [0.492]
∅1.00
[0.039]
0.50 [0.020]
9.60 [0.378]
12.40[0.48 8]
10.50[0.4 13]
FOOTP RINT DETAIL S
B
_
S
Pin
1
2
3
4
GND
Vin
0V
+Vo
FOOTPRINT DETAILS
Pin
1
4
5
7
B
_
D
GND
Vin
+Vo
0V
16.90[0.665]
3.50[0 .138]
4.90[0.193 ]
Note:
Unit :mm[inch]
General tolerances:
±
0.50mm[± 0.020inch]
L=530mm[20.866inch] Devices per tube: 43pcs(B_S) 40pcs(B_D)
L=220mm[8.661inch] Devices per tube: 17pcs(B_S) 16pcs(B_D)
Short tube inner packaging dimensions: L*W*H=255*170*80mm;
Short tube outer packaging dimensions(with six inner packaging boxes):
L*W*H=375*280*270mm;
Long tube inner packaging dimensions: L*W*H=580*200*100mm;
Long tube outer packaging dimensions(with two inner packaging boxes)
：
L*W*H=600*215*220mm;
Long tube outer packaging dimensions(with three inner packaging boxes)
：
L*W*H=600*215*325mm.
Note:
Unit:mm[inch]
Pin se ction tolerances:± 0.10mm[± 0.004inch]
Gene ral tolerances:± 0.25mm[± 0 .010inch]
Note:
1. Operation under minimum load will not damage the converter; However, they may not meet all specification listed, and that will reduce the
life of product.
2. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified.
3. Only typical models listed, other models may be different, please contact our technical person for more details.
4. In this datasheet, all the test methods of indications are based on corporate standards.
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
B_S(D)-W2
B/2-2012
Page 3 of 3
16.50[0.650]
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