WRA_CS-1W & WRB_CS-1W Series
1W, WIDE INPUT, ISOLATED & REGULATED
DUAL/SINGLE OUTPUT DC-DC CONVERTER
FEATURES
Wide (2:1) Input Range
Miniature SIP Package
Regulated Outputs
I/0 Isolation 1500VDC
Short Circuit Protection(automatic recovery)
External On/Off control
Internal SMD construction
Operating Temperature: -40°C to +85°C
RoHS Compliance
Patent Protection
RoHS
PRODUCT PROGRAM
Input
Part
Number
WRA0505CS-1W
WRA0509CS-1W
WRA0512CS-1W
WRA0515CS-1W
WRB0503CS-1W
WRB0505CS-1W
WRB0509CS-1W
5
(4.5-9.0)
11
40
Voltage (VDC)
Nominal(Range)
Max*
No Load
(mA)(Typ)
Voltage
(VDC)
±5
±9
±12
±15
3.3
5
9
12
15
24
±5
±9
±12
±15
12
(9.0-18)
22
20
3.3
5
9
12
15
24
±5
±9
±12
±15
24
(18-36)
40
10
3.3
5
9
12
15
24
±5
±9
±12
±15
48
(36-72)
80
5
3.3
5
9
12
15
24
Output
Current (mA)
Max
±100
±55
±42
±33
303
200
111
83
67
42
±100
±55
±42
±33
303
200
111
83
67
42
±100
±55
±42
±33
303
200
111
83
67
42
±100
±55
±42
±33
303
200
111
83
67
42
Min
±10
±5
±4
±3
30
20
11
8
7
4
±10
±5
±4
±3
30
20
11
8
7
4
±10
±5
±4
±3
30
20
11
8
7
4
±10
±5
±4
±3
30
20
11
8
7
4
71
72
73
73
66
70
72
73
72
70
75
76
77
76
68
75
77
78
78
77
76
77
78
78
70
73
76
78
76
77
75
76
78
78
71
73
75
78
76
78
Efficiency
(%, Typ.)
APPLICATIONS
The WRA_CS-1W & WRB_CS-1W Series are
specially designed for applications where a wide
range input voltage 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
wide range (voltage range≤2:1);
2) Where isolation is necessary between input
and output(Isolation Voltage≤1500VDC);
3) Where the regulation of the output voltage and
the output ripple noise are demanded.
WRB0512CS-1W
WRB0515CS-1W
WRB0524CS-1W
WRA1205CS-1W
WRA1209CS-1W
WRA1212CS-1W
WRA1215CS-1W
WRB1203CS-1W
WRB1205CS-1W
WRB1209CS-1W
WRB1212CS-1W
WRB1215CS-1W
WRB1224CS-1W
WRA2405CS-1W
WRA2409CS-1W
MODEL SELECTION
WRA2412CS-1W
Rated Power
Package Style
Output Voltage
Input Voltage
Product Series
WRA2412CS-1W
WRA2415CS-1W
WRB2403CS-1W
WRB2405CS-1W
WRB2409CS-1W
WRB2412CS-1W
WRB2415CS-1W
WRB2424CS-1W
WRA4805CS-1W
WRA4809CS-1W
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
WRA4812CS-1W
WRA4815CS-1W
WRB4803CS-1W
WRB4805CS-1W
WRB4809CS-1W
WRB4812CS-1W
WRB4815CS-1W
WRB4824CS-1W
* Input voltage can’t exceed this value, or will cause the permanent damage.
Note:1.Models listed with strike-through text have been officially discontinued.
2.Operation under 10% load will not damage the converter; However, they may not meet all specification listed.
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
WRA_CS-1W & WRB_CS-1W
A/4-2012
Page 1 of 3
COMMON SPECIFICATION
Item
Storage humidity
Operating temperature
Storage temperature
Temp. rise at full load
Lead temperature
Isolation voltage
Isolation resistance
Isolation capacitance
Cooling
Short circuit protection
Case Material
MTBF
Weight
1000
5.5
1.5mm from case for 10 seconds
Tested for 1 minute and 1mA max 1500
Test at 500VDC
Input/Output, 100KHz/1V
1000
80
Free Air Convection
Continuous, automatic recovery
Plastic(UL94-V0)
K hours
g
-40
-50
15
Test Conditions
Min
Typ.
Max
95
85
125
35
300
VDC
MΩ
pF
°C
Units
%
APPLICATION NOTE
CTRL Terminal
When open or high impedance, the converter
work well; When this pin is
‘high’;
the converter
shutdown; It should be note that the input current
(Ic)
should
between
5-10mA,
exceeding
the
maximum 20mA will cause permanence damage to
the converter. The value of R Can be derived as
follows:
R=
Ic
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).
Single Output
Vc
Vin
Ci n
D1 Ic R
3
V
C
-V
D
-1.0
Lin
2
6
8
+Vo
Co ut
0V
OUTPUT SPECIFICATIONS
Item
Test Conditions
Min
Typ.
±1
±0.5
±0.5
±0.2
Max
±3
±0.75
±1.0
±0.5
±0.03
25
100
%/°C
mVp-p
KHz
%
Units
Output voltage accuracy Input voltage range refer to output load
Load regulation
Line regulation
Temperature drift (Vout)
Ripple & Noise
Switching Frequency
10% to 100% load (WRB_CS-1W)
10% to 100% load (WRA_CS-1W)
Input voltage from low to high
Refer to recommended circuit
20MHz Bandwidth
Input voltage range 100% load
G ND
1
7
Cs
Dual Output
Vc
V in
C in
7
D1 I c R
Lin
2
3
6
L ou t
+Vo
Cout
0V
Lou t
Cout
-Vo
GND
1
8
(Figure 1)
However, the capacitance of the output 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 greatest capacitance of its
filter capacitor sees (Table 1). General:
Cin:
5V,12V
24V,48V
100μF
10uF-47μF
180-550(PFM)
Note:
1. Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at Testing of Power
Converter section, application notes.
2. See the recommended circuits for more details.
TYPICAL TEMPERATURE CURVE
Cout: 100μF(Typ.)
Lin:
4.7μH-120μH
Lout: 2.2μH-10μH
Cs:
10μF-22μF
Operating Temp.(
C
)
External Capacitor Table(Table 1)
Single Vout
Cout
Dual Vout
Cout
(VDC)
(
μ
F)(Max)
(VDC) (
μ
F) (Max)
3.3
1000
-
-
5
820
±5
470
9
680
±9
330
12
560
±12
270
15
470
±15
100
24
330
-
-
Input current
While using unstable power source, please
ensure the output voltage and ripple voltage do not
exceed indexes of the converter. The preceding
power source must be able to provide for converter
sufficient starting current Ip (Figure 2).General: Ip
≤1.4*Iin-max
Input Current(A)
Ip
Input Voltage
Range
Input Voltage (V)
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.
WRA_CS-1W & WRB_CS-1W
A/4-2012
Page 2 of 3
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
MECHANICAL DIMENSIONS
RECOMMENDED FOOTPRINT
∅1.00
[0.039]
(Front View)
0.50[0.020]
12.00
[0.472]
1
2
3
5
6
7
8
4.10
[0.161]
0.50[0.020]
22.00 [0.866]
0.30[0.012]
Note: grid
2.54*2.54
mm
.
TUBE OUTLINE DIMENSIONS
12.40 [0.488]
9.50
[0.374]
(Bottom View)
1
2
3
5
6
7
8
2.54[0.100]
17.78[0.700]
FOOTPRINT DETAILS
Single
Dual
Pin
GND
1
GND
Vin
Vin
2
3
CTRL
CTRL
NC
NC
5
+Vo
+Vo
6
0V
7
0V
-Vo
8
CS
NC: No connection
Note:
Unit:mm[inch]
Pin section tolerances:
±
0.10mm[
±
0.004inch]
General tolerances:
±
0.25mm[
±
0.010inch]
6.40 [0.252]
Note:
Unit :mm[inch]
General tolerances:
±
0.50mm[
±
0.020inch]
L=530mm[20.866inch] Devices per tube quantity: 22pcs
L=220mm[8.661inch] Devices per tube quantity: 8pcs
Short tube inner package dimensions: L*W*H= 255*170*80mm
Short tube outer package dimensions(with six inner package boxes):
L*W*H= 375*280*270mm
Long tube inner package dimensions: L*W*H= 580*200*100mm
Long tube outer package dimensions(with two inner package boxes):
L*W*H= 600*215*220mm
Long tube outer package dimensions(with three inner package boxes):
L*W*H= 600*215*325mm
Note:
1. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified.
2. In this datasheet, all the test methods of indications are based on corporate standards.
3. Only typical models listed, other models may be different, please contact our technical person for more details.
The copyright and authority for the interpretation of the products are reserved by MORNSUN
20.40[0.803]
Specifications subject to change without notice.
WRA_CS-1W&WRB_CS-1W
A/4-2012
Page 3 of 3
14.40[0.567]
1.30
[0.051]
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