WRA_S - 3WR2 & WRB_S - 3WR2 Series
3W
，
WIDE INPUT, ISOLATED & REGULATED
DUAL/SINGLE OUTPUT DC-DC CONVERTER
FEATURES
●
Ultra-Miniature SIP Package
●
2:1 wide input voltage range
●
Temperature range: -40°C ~ +85°C
●
1.5KVDC isolation
●
Short Circuit Protection(automatic
recovery)
●
External On/Off control
●
High Power Density
APPLICATION
Patent Protected RoHS
PART NUMBER SYSTEM
WRB1205S-3WR2
Rated Power
Package Style
Output Voltage
Input Voltage
Product Series
The WRA_S-3WR2 & WRB_S-3WR2 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. For these DC-DC converters, you can
reduce the design point of failure and save the
development of micro power supply‘s manpower, material
and time costs, also better ensure product quality stability,
protect safety and reliability of the end of products.
These products apply to where:
1) Input voltage range
≤2:1;
2) 1.5KVDC input and output isolation;
3) Regulated and low ripple noise is required.
Such as: industrial control, tele-communications etc.
SELECTION GUIDE
Input Voltage(VDC)
Model
Nominal
(Range)
WRA0505S-3WR2
WRA0512S-3WR2
WRA0515S-3WR2
WRB0505S-3WR2
WRB0509S-3WR2
WRB0512S-3WR2
WRB0515S-3WR2
WRA1205S-3WR2
WRA1212S-3WR2
WRA1215S-3WR2
WRB1203S-3WR2
WRB1205S-3WR2
WRB1209S-3WR2
WRB1212S-3WR2
WRB1215S-3WR2
WRB1224S-3WR2
WRA2405S-3WR2
WRA2409S-3WR2
WRA2412S-3WR2
WRA2415S-3WR2
WRB2403S-3WR2
WRB2405S-3WR2
WRB2409S-3WR2
WRB2412S-3WR2
WRB2415S-3WR2
WRB2424S-3WR2
24
(18-36)
40
12
(9-18)
20
5
(4.5-9)
11
Max.
①
Output Current (mA) Input Current (mA)(typ.)
Output
Voltage
(VDC)
±5
±12
±15
5
9
12
15
±5
±12
±15
3.3
5
9
12
15
24
±5
±9
±12
±15
3.3
5
9
12
15
24
@Max.
Max.
±250
±104
±83
500
278
208
167
±300
±125
±100
758
600
333
250
200
125
±300
±167
±125
±100
758
600
333
250
200
125
Min.
Load
±13
±5
±4
25
14
10
8
±15
±6
±5
38
30
17
13
10
6
±15
±8
±6
±5
38
30
17
13
10
6
676
650
650
685
676
650
676
321
317
313
278
329
317
305
302
309
158
155
151
151
141
155
151
151
151
151
7
20
40
Load
@No
Reflected
Ripple
Current
(mA,typ.)
Max.
Capacitive
Load
(µF)
470
330
②
Efficiency
(%, typ.)
@Max.
Load
74
77
77
73
74
77
74
78
79
80
75
76
79
82
83
81
79
81
83
83
74
81
83
83
83
83
1000
30
2200
1000
680
470
1000
470
330
2700
30
2200
1000
680
470
330
1000
680
470
330
110
2700
2200
1000
680
470
330
The copyright and authority for the interpretation of the products are reserved by
MORNSUN
WRA_S-3WR2 & WRB_S-3WR2
2013.07.22-A/3
Page 1 of 7
WRA4805S-3WR2
WRA4812S-3WR2
WRA4815S-3WR2
WRB4803S-3WR2
WRB4805S-3WR2
WRB4812S-3WR2
WRB4815S-3WR2
WRB4824S-3WR2
48
(36-75)
80
±5
±12
±15
3.3
5
12
15
24
±300
±125
±100
758
600
250
200
125
±15
±6
±5
38
30
13
10
6
79
76
76
70
82
78
75
76
7
45
1000
470
330
2700
2200
680
470
330
79
82
82
75
76
80
84
82
Note:
①.
Absolute maximum rating without damage on the converter, but it isn't recommended;
②.
For dual output converter, the given value is the same for each output.
INPUT SPECIFICATIONS
Item
Test Conditions
5V input
Input Surge Voltage (1sec. max.)
12V input
24V input
48V input
5V input
Start-up Voltage
12V input
24V input
48V input
Input Filter
Models ON
Ctrl*
Models OFF
Min.
-0.7
-0.7
-0.7
-0.7
3.5
4.5
11
24
Typ.
--
--
--
--
4
8
16
33
C Filter
Ctrl open or be insulated
Connect high level voltage, and ensure the current into Ctrl
to be 5-10mA
Max.
12
25
50
100
4.5
9
18
36
VDC
Unit
Note: *Please refer to "DESIGN CONSIDERATIONS" as the direction for use of Ctrl.
OUTPUT SPECIFICATIONS
Item
Output Voltage Accuracy
No-load Output Voltage Accuracy
Output Voltage Balance
Line Regulation
Load Regulation
Transient Recovery Time
Transient Response Deviation
Temperature coefficient
Ripple
Noise
②
②
Test Conditions
5% to 100% load
①
Min.
--
--
--
--
--
--
--
--
--
--
Typ.
±1
±1.5
±0.5
±0.2
±0.6
0.5
±2.5
±0.02
30
35
Max.
±3
±5
±1
±0.5
±1
3
±5
±0.03
45
75
Unit
Input voltage range
Dual output, balanced loads
Full load, Input voltage from low to high
5% to 100% load
25% load step change
100% load
20MHz Bandwidth
%
ms
%
%/°C
mVp-p
Output Short Circuit Protection
Continuous, automatic recovery
Note:
①
. The max. no-load output voltage accuracy for WRB1203S-3WR2 and WRB4803S-3W R2 is
±8%;
②
. Ripple and noise tested with "parallel cable" method. See detailed operation instructions at
DC-DC application notes;
The max. output ripple for WRA2405S-3W R2 is 65mVp-p.
COMMON SPECIFICATIONS
Item
Isolation Voltage
Isolation Resistance
Isolation Capacitance
MTBF
Case Material
Weight
--
Test Conditions
Tested for 1 minute, leakage current less than 1 mA
Test at 500VDC
Input/Output,100KHz/0.1V
MIL-HDBK-217F@25℃
Min.
1500
1000
--
--
1000
Typ.
--
--
120
250
--
4.9
Max.
--
--
--
--
--
--
Unit
VDC
MΩ
pF
KHz
K hours
Switching Frequency(PFM Mode) 100% load, Nominal Input voltage
Plastic（UL94-V0）
g
ENVIRONMENTAL SPECIFICATIONS
Item
Storage Humidity
Operating Temperature
Test Conditions
Non condensing
Power derating (above85℃,see Figure 5)
Min.
--
-40
Typ.
--
--
Max.
95
85
2013.07.22-A/3
Unit
%
°C
Page 2 of 7
The copyright and authority for the interpretation of the products are reserved by
MORNSUN
WRA_S-3WR2 & WRB_S-3WR2
Storage Temperature
Temp. rise at full load
Lead Temperature
Cooling
Ta=25°C
1.5mm from case for 10 seconds
-55
--
--
--
25
--
125
--
300
Free air convection
EMC SPECIFICATIONS
EMI
CE
RE
ESD
RS
EFT
EMS
Surge
CS
Voltage dips, short and
interruptions immunity
CISPR22/EN55022
CISPR22/EN55022
IEC/EN61000-4-2
IEC/EN61000-4-3
IEC/EN61000-4-4
IEC/EN61000-4-4
IEC/EN61000-4-5
IEC/EN61000-4-6
CLASS B（Recommended Circuit Refer to Figure1-② or Figure 3）
CLASS B（Recommended Circuit Refer to Figure1-② or Figure 3）
Contact
±4KV
10V/m
±2KV
±4KV
±2KV
3 Vr.m.s
（Recommended
Circuit Refer to Figure1-①）
（Recommended
Circuit Refer to Figure 3）
（Recommended
Circuit Refer to Figure1-① or Figure 3）
perf. Criteria B
perf. Criteria A
perf. Criteria B
perf. Criteria B
perf. Criteria B
perf. Criteria A
perf. Criteria B
IEC/EN61000-4-29 0%-70%
EMC RECOMMENDED CIRCUIT
FU SE
Vin
+
MOV
GN D
TVS
C1
C0
C2
Cd
GN D
C trl
D1
R
Ctrl
LDM1
LDM2
Vin
+Vo
EUT
-Vo
(0V)
LOAD
①
②
CY
③
(Figure1)
Recommended external circuit parameters:
Model
FUSE
MOV
LDM1
TVS
C0
C1
LDM2
C2
CY
D1
R
Cd
Vin：5V
--
--
SMCJ13A
680μF/16V
Vin:12V
Vin:24V
Vin:48V
S14K60
56μH
SMCJ90A
330μF/100V
4.7μF/100V
Choose according to practical input current
--
S14K35
--
SMCJ28A
680μF/25V
4.7μF/50V
12μH
4.7μF/50V
1nF/2KV
RB160M-60/1A
V
-
V
- 1.0
Follows:
R
=
C D
- 300
I
C
47nF/100V
56μH
SMCJ48A
330μF/50V
4.7μF/100V
Note: 1. In Figure 1, part
①
is EMS recommended external circuit, part
②
is EMI recommended external circuit. Choose according to requirements;
2. V
C
is the voltage to GND from Ctrl, V
D
is the forward conduction voltage drop of D1,I
C
is the current through Ctrl pin which is normally 5-10mA, the external circuit
of Ctrl is as shown in figure1-
③
;
3. If there is no recommended parameters, the model no require the external component.
EMC RECOMMENDED CIRCUIT PCB LAYOUT
DUAL
SINGLE
(Figure 2)
Note: The pad space between input and output GND (CY) must≥2mm.
The copyright and authority for the interpretation of the products are reserved by
MORNSUN
WRA_S-3WR2 & WRB_S-3WR2
2013.07.22-A/3
Page 3 of 7
EMC MODULE APPLICATION CIRCUIT
FUS E
+V in
+Vin
Ctrl
D1
Cd
-V in
-Vin
-Vo
GND
R
Ctrl
-Vo
(0V)
Vin
+Vo
EU T
Lo ad
+
C
FT-A /BX 1 D
+Vo
FT-A/BX1D is MORNSUN’s EFT suppresser
For Nominal Voltage<48V, C≥330uF/50V
For Nominal Voltage =48V, C≥330uF/100V
(Figure 3)
EMC MODULE RECOMMENDED CIRCUIT PCB LAYOUT
DUAL
SINGLE
(Figure 4)
EMI TEST WAVEFORM (RECOMMENDED CIRCUIT FIGURE1-②)
WRA2415S-3WR2 CE(Class B, Positive line)
WRA2415S-3WR2 CE(Class B, Negative line)
WRB1205S-3WR2 CE(Class B, Positive line)
WRB1205S-3WR2 CE(Class B, Negative line)
PRODUCT TYPICAL PERFORMANCE CURVE
Tolerance Envelope Graph
O u t pu t P o w e r P e rce n t(% )
120
100
80
60
Safe Operating Area
40
20
0
-40
0
40
85 10 5120
Temperature Derating Graph
Output Curren t Percent(%)
Ambient Temp.(
℃
)
(Figure 5)
The copyright and authority for the interpretation of the products are reserved by
MORNSUN
WRA_S-3WR2 & WRB_S-3WR2
2013.07.22-A/3
Page 4 of 7
Efficiency VS Input Voltage curve
(Full Load)
WRA2415S-3WR2
100
95
90
85
80
75
70
65
60
55
50
Efficiency VS Output Load curve
WRA2415S-3WR2
(Vin=Vin-nominal)
100
90
80
70
60
50
40
30
20
10
0
10
20
30
40
50
60
70
80
90
100
Efficiency(%)
18
20
22
24
26
28
30
32
34
36
Input Voltage(V)
Efficiency(%)
Total Output Current (% )
Efficiency VS Input Voltage curve
WRB1205S-3WR2
(Full Load)
100
95
90
85
80
75
70
65
60
55
50
9
10
11
12
13
14
15
16
17
18
Efficiency VS Output Load curve
WRB1205S-3WR2
(Vin=Vin-nominal)
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 (% )
OUTLINE DIMENSIONS,RECOMMENDED FOOTPRINT & PACKAGING
The copyright and authority for the interpretation of the products are reserved by
MORNSUN
WRA_S-3WR2 & WRB_S-3WR2
2013.07.22-A/3
Page 5 of 7
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