WRA_SP-3W & WRB_SP-3W Series
3W, WIDE INPUT, IAOLATED & REGULATED
DUAL/SINGLE OUTPUT DIP DC-DC CONVERTER
multi-country patent protection
RoHS
FEATURES
Wide (2:1) input range
Efficiency up to 82%
Short circuit protection(automatic recovery)
Operating temperature: -40°C to +85°C
Internal SMD construction
1.5KVDC Isolation
Metal shielding package
No Heat sink required
No external component required
Industry standard Pinout
MTBF>1,000,000 hours
RoHS Compliance
PRODUCT PROGRAM
Part
Number
WRA0505SP-3W
WRA0509SP-3W
WRA0512SP-3W
WRA0515SP-3W
WRB0505SP-3W
WRB0509SP-3W
WRB0512SP-3W
WRB0515SP-3W
WRA1205SP-3W
WRA1209SP-3W
WRA1212SP-3W
WRA1215SP-3W
WRB1205SP-3W
WRB1209SP-3W
WRB1212SP-3W
WRB1215SP-3W
WRB1224SP-3W
WRA2405SP-3W
WRA2409SP-3W
WRA2412SP-3W
WRA2415SP-3W
WRB2405SP-3W
WRB2409SP-3W
WRB2412SP-3W
WRB2415SP-3W
WRB2424SP-3W
WRA4805SP-3W
WRA4809SP-3W
WRA4812SP-3W
WRA4815SP-3W
WRB4805SP-3W
WRB4809SP-3W
WRB4812SP-3W
WRB4815SP-3W
WRB4824SP-3W
Input
Voltage (VDC)
Nominal Range
Max*
Voltage
(VDC)
±5
±9
±12
±15
5
9
12
15
±5
±9
±12
±15
5
9
12
15
24
±5
±9
±12
±15
5
9
12
15
24
±5
±9
±12
±15
5
9
12
15
24
Output
Current
Max
±300
±166
±125
±100
600
333
250
200
±300
±166
±125
±100
600
333
250
200
125
±300
±166
±125
±100
600
333
250
200
125
±300
±166
±125
±100
600
333
250
200
125
(mA)
Min
±30
±16
±12
±10
60
33
25
20
±30
±16
±12
±10
60
33
25
20
12
±30
±16
±12
±10
60
33
25
20
12
±30
±16
±12
±10
60
33
25
20
12
Efficiency
(%, Typ)
68
70
72
71
68
70
72
71
74
76
78
79
76
78
80
79
81
78
80
82
81
78
80
82
81
80
78
79
80
81
78
79
80
81
80
5
4.5-9
11
12
9-18
22
APPLICATIONS
The WRB_SP-3W & WRA_SP-3W 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.
24
18-36
40
48
36-72
80
MODEL SELECTION
WRB0512SP-3W
Rated Power
Package Style
Output Voltage
Input Voltage
Product Series
*Input voltage can’t exceed this value, or will cause the permanent damage.
Note: The load shouldn't be less than 10%, otherwise ripple will increase dramatically.
Operation under 10% load will not damage the converter; However, they may not meet all specification
listed.
OUTPUT SPECIFICATIONS
Item
Output power
Positive voltage accuracy
Negative voltage accuracy
Load regulation
Line regulation
Temperature drift (Vout)
Ripple & Noise
**
Switching frequency
Test conditions
Refer to product program
Refer to recommended circuit
Refer to recommended circuit
From 10% to 100% load
Input voltage from low to high
Refer to recommended circuit
20MHz Bandwidth
100% load, nominal input voltage
Min
0.3
Typ
±1
±3
±0.5
±0.2
75
300
Max
Units
3
W
±3
±5
%
±1*
±0.5
±0.03
%/°C
150 mVp-p
KHz
MORNSUN Science & Technology co.,Ltd.
Address: 2th floor 6th building, Hangzhou
Industrial District, Guangzhou, China
Tel: 86-20-38601850
Fax: 86-20-38601272
http://www.mornsun-power.com
*Dual output models unbalanced load:
±5%.
**Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at Testing of Power
Converter section, application notes.
MORNSUN reserves the copyright
Specifications subject to change without notice.
WRA_SP-3W & WRB_SP-3W
A/1-2008
Page 1 of 2
COMMON SPECIFICATIONS
Item
Storage humidity
Operating temperature
Storage temperature
Temp. rise at full load
Lead temperature
No-load power consumption
Isolation voltage
Isolation resistance
Isolation Capacitance
Cooling
Short circuit protection
Case material
MTBF
Weight
Tested for 1 minute and 1 mA max 1500
Test at 500VDC
Input/Output
Free air convection
Continuous, automatic recovery
Aluminium alloy
1000
15
K hours
g
1000
100
1.5mm from case for 10 seconds
0.2
-40
-55
15
300
W
VDC
MΩ
pF
Test Conditions
Min
Typ
Max
95
85
125
°C
Units
%
Recommended Circuit
All the WRA_SP-3W & WRB_SP-3W Series
have been tested according to the following
recommended testing circuit before leaving
factory (Figure 1). This series should be tested
under load.
Vin
Ci n
+Vout
DC
DC
0V
-Vout
GND
Single Output
Vin
Cin
+Vout
DC
DC
0V
GND
If
you
(Figure 1)
want to further
ripple,
you
decrease
can
the
Note:
1. All specifications measured at TA=25°C, humidity<75%, nominal input voltage and rated output load
unless otherwise specified.
2.See below recommended circuits for more details.
input/output
increase
capacitance properly or choose capacitors with
low ESR. 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
100μF
24V&48V
10μF-47μF
Cout: 10μF/100mA
Output External Capacitor Table(Table 1)
Single Vout
Cout Dual Vout Cout
(VDC)
(uF)
(VDC)
(uF)
5
1000
±5
680
9
12
680
470
330
220
±9
±12
±15
-
470
330
220
-
TYPICAL CHARACTERISTICS
100
Operating Temp.(
C
)
OUTLINE DIMENSIONS&
PIN CONNECTIONS
3.88
(0.153)
First Angle Projection
35.00 (1.378)
FOOTPRINT DETAILS
2
3
15
24
7.62 7.62
(0.300)(0.300)
23.00(0.905)
7.62
(0.300)
1
(Bottom View)
4
5
Pin
1
2
3
4
5
Single
Vin
GND
0V
No Pin
+Vo
Dual
Vin
GND
-Vo
0V
+Vo
Input Current
When it is used in unregulated power supply,
be sure that the fluctuating range of the power
supply and the rippled voltage do not exceed the
module standard. Input current of power supply
should afford the startup current of this kind of
DC/DC module. (Figure 2)
General: Ip
≤1.4*Iin-max
2.90
(0.11 4)
29.21(1.150)
8.50
(0.335)
4.10
(0.161)
Input Current(A)
(Side View)
0.50
(0.020)
Note:
Unit:mm(inch )
Pin diameter:0.80mm(0.031inch )
Pin diameter tolerances: 0.05mm( 0.002inch)
General to lerances: 0.25mm( 0.010inch)
Ip
APPLICATION NOTE
Requirement on output load
In order to ensure the product operate efficiently and reliably, in addition to a max load
(namely full load), a minimum load is specified for this kind of DC/DC converter. Make sure
the specified range of input voltage is not exceeded, the minimum output load no less than
10% load. If the actual load is less than the specified minimum load, the output ripple may
increase sharply while its efficiency and reliability will reduce greatly. If the actual output
power is very small, please add an appropriate resistor as extra loading, or contact our
company for other lower output power products.
Input Voltage
Range
Input Voltage (V)
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
WRA_SP-3W & WRB_SP-3W
A/1-2008
Page 2 of 2
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