WRA_CS-2W & WRB_CS-2W Series
2W, WIDE INPUT, ISOLATED & REGULATED
DUAL/SINGLE OUTPUT DC-DC CONVERTER
Patent Protection
FEATURES
Miniature SIP Package
Wide (2:1) Input Range
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
RoHS
PRODUCT PROGRAM
Input
Part
Number
WRA0505CS-2W
WRA0509CS-2W
WRA0512CS-2W
WRA0515CS-2W
WRA0524CS-2W
WRB0503CS-1W6
WRB0505CS-2W
WRB0509CS-2W
WRB0512CS-2W
WRB0515CS-2W
WRB0524CS-2W
WRA1205CS-2W
WRA1209CS-2W
WRA1212CS-2W
WRA1215CS-2W
WRB1203CS-1W6
WRB1205CS-2W
WRB1209CS-2W
WRB1212CS-2W
WRB1215CS-2W
WRB1224CS-2W
WRA2405CS-2W
WRA2409CS-2W
WRA2412CS-2W
WRA2415CS-2W
WRB2403CS-1W6
WRB2405CS-2W
WRB2409CS-2W
WRB2412CS-2W
WRB2415CS-2W
WRB2424CS-2W
WRA4805CS-2W
WRA4809CS-2W
WRA4812CS-2W
WRA4815CS-2W
WRB4803CS-1W6
WRB4805CS-2W
WRB4809CS-2W
WRB4812CS-2W
WRB4815CS-2W
WRB4824CS-2W
48
(36-72)
24
(18-36)
40
10
12
(9.0-18)
22
20
5
(4.5-9.0)
11
40
Voltage (VDC)
Nominal(Range)
Max*
No Load
(mA)(Typ)
Voltage
(VDC)
±5
±9
±12
±15
±24
3.3
5
9
12
15
24
±5
±9
±12
±15
3.3
5
9
12
15
24
±5
±9
±12
±15
3.3
5
9
12
15
24
±5
±9
±12
±15
80
5
3.3
5
9
12
15
24
Output
Current (mA)
Max
±200
±111
±83
±67
±42
500
400
222
167
133
80
±200
±111
±83
±67
500
400
222
167
133
80
±200
±111
±83
±67
500
400
222
167
133
80
±200
±111
±83
±67
500
400
222
167
133
80
Min
±20
±11
±8
±7
±4
50
40
22
16
13
8
±20
±11
±8
±7
50
40
22
16
13
8
±20
±11
±8
±7
50
40
22
16
13
8
±20
±11
±8
±7
50
40
22
16
13
8
67
71
72
73
72
64
67
72
73
72
71
73
74
78
77
68
75
77
79
80
78
76
78
79
78
67
77
79
80
80
80
75
78
79
79
71
75
76
78
78
80
Efficiency
(%, Typ)
APPLICATIONS
The WRA_CS-2W & WRB_CS-2W 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.
MODEL SELECTION
WRA0512CS-2W
Rated Power
Package Style
Output Voltage
Input Voltage
Product Series
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
Note:
1.* Input voltage can’t exceed this value, or will cause the permanent damage.
2. Operation under 10% load will not damage the converter; However, they may not meet all specification listed.
MORNSUN
reserves the copyright
Specifications subject to change without notice.
WRA_CS-2W & WRB_CS-2W
A/3-2012
Page 1 of 2
COMMON SPECIFICATION
Item
Storage Humidity
Operating Temperature
Storage Temperature
Temp. Rise at Full Load
Lead Temperature
Isolation voltage
Isolation resistance
Isolation Capacitance
No-load power consumption
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
Test at 500VDC
Input/Output, 100KHz/1V
1500
1000
80
100
Continuous
Plastic(UL94-V0)
K hours
g
-40
-50
15
Test Conditions
Min
Typ
Max
95
85
125
35
300
VDC
MΩ
PF
mW
°C
Units
%
APPLICATION NOTE
①
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
=
Free Air Convection
V
C
−
V
D
−
1.0
I
C
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).
Single Output
Vc
D1 Ic R
Lin 2
Cin
3
6
8
1
7
Cs
Co ut
0V
+V o
OUTPUT SPECIFICATIONS
Item
Test Conditions
10% to 100% load(WRB_CS-2W)
10% to 100% load(WRA_CS-2W)
Input voltage from Low To high
Refer to recommended circuit
20MHz Bandwidth
Input voltage range 100% load
35
Min
Typ
±1
±0.5
±0.5
±0.2
Max
±3
±0.75
±1.0
±0.5
±0.03
100
180-500(PFM)
%/°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
Vi n
G ND
Dual Output
Vc
V in
C in
7
D1 Ic R
L in
2
3
6
L ou t
+Vo
Cou t
0V
L ou t
Cou t
-Vo
*Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at Testing of Power
Converter section, application notes.
Note:
1. All specifications measured at T
A
=25°C, humidity<75%, nominal input voltage and rated output load unless
otherwise specified.
2. See below recommended circuits for more details
GN D
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:
5V,12V
100μF
24V,48V
10μF - 22μF
Lin:
4.7μH -120μH
Cout: 100μF(typ)
Lout: 2.2μH-10μH
Cs:
10μF - 22μF
External Capacitor Table(Table 1)
Cout
Dual Vout
Cout
Single Vout
(VDC)
(μF)
(VDC)
(μF)
3.3
2200
-
-
5
1000
820
680
560
470
±5
±9
±12
±15
±24
560
470
330
270
100
9
12
15
24
Cin:
TYPICAL TEMPERATURE CURVE
Operating Temp.(
C
)
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
MECHANICAL DIMENSIONS
0.50[0.020 ]
RECOMMENDED FOOTPRINT
∅1.00
[0.039]
1 2.00
[0 .472]
(Front View)
1
2
3
5
6
7 8
4. 10
[0.16 1]
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]
(Bottom View)
1
2
3
5
6
7 8
2.54[ 0.100]
1 7.78[0. 700]
FOOTPRINT DETAILS
Single
Dual
Pin
1
GND
GND
Vin
Vin
2
3
CTRL
CTRL
NC
5
NC
+Vo
+Vo
6
7
0V
0V
8
CS
-Vo
NC: No conn ection
Not e:
Unit :mm[inch ]
Pin se ction tolera nces:
±
0.10m m[
±
0.004in ch]
Gen eral toler ances:
±
0.25 mm[
±
0.010 inch]
③
Input current
While using unstable power source, please
ensure the output voltage and ripple voltage do not
excced 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)
9.50
[0.374]
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
20.40 [0 .803]
14.40[ 0. 567]
1.30
[0.05 1]
Ip
In pu t Volta ge
R an ge
Input Voltage (V)
④
No parallel connection or plug and play.
WRA_CS-2W & WRB_CS-2W
A/3-2012
Page 2 of 2
MORNSUN
reserves the copyright
Specifications subject to change without notice.
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