WRA_N-2W & WRB_N-2W Series
2W, WIDE INPUT, ISOLATED®ULATED
DUAL/SINGLE OUTPUT DIP DC-DC CONVERTER
multi-country patent protection
RoHS
FEATURES
Miniature DIP Package
Wide (2:1) Input Range
Operating Temperature: -40°C to +85°C
1500VDC Isolation
No Heat Sink Required
No External Component Required
Industry Standard Pinout
Internal SMD construction
Short circuit protection(automatic recovery)
RoHS Compliance
PRODUCT PROGRAM
Input
Part
Number
WRA1205N-2W
WRA1209N-2W
WRA1212N-2W
WRA1215N-2W
WRB1203N-1W6
WRB1205N-2W
WRB1209N-2W
WRB1212N-2W
WRB1215N-2W
12
9-18
22
Voltage (VDC)
Nominal
Range
Max*
Voltage
(VDC)
±5
±9
±12
±15
3.3
5
9
12
15
±5
±9
±12
±15
24
18-36
40
3.3
5
9
12
15
Output
Current (mA)
Max
±200
±111
±83
±67
500
400
222
167
133
±200
±111
±83
±67
500
400
222
167
133
Min
±20
±11
±8
±7
50
40
22
16
13
±20
±11
±8
±7
50
40
22
16
13
75
76
78
78
70
74
76
78
78
76
77
78
79
72
76
78
80
79
Efficiency
(%, Typ)
APPLICATIONS
The WRA_N-2W & WRB_N-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.
WRA2405N-2W
WRA2409N-2W
WRA2412N-2W
WRA2415N-2W
WRB2403N-1W6
WRB2405N-2W
WRB2409N-2W
WRB2412N-2W
WRB2415N-2W
*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
Test conditions
Refer to above products program
Refer to recommended circuit
Min
0.2
±1
±3
±0.5
±0.2
Typ
Max
2
±3
±5
±1*
±0.5
±0.03
50
300
100
%/°C
mVp-p
KHz
%
Units
W
MODEL SELECTION
WRB2405N-2W
Rated Power
Package Style
Output Voltage
Input Voltage
Product Series
Positive voltage accuracy
Negative voltage accuracy Refer to recommended circuit
Load regulation
Line regulation
Temperature drift
Ripple & Noise**
Switching frequency
From 10% to 100% load
Input Voltage From Low to High
Refer to recommended circuit
20MHz bandwidth
100% load, input voltage range
*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 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
ISOLATION SPECIFICATIONS
Item
Isolation voltage
Isolation resistance
Isolation Capacitance
Test conditions
Tested for 1 minute and 1 mA max
Test at 500VDC
Input/Output
WRA_N_2W&WRB_N_2W
Min
1500
1000
Typ
Max
Units
VDC
MΩ
85
A/1-2008
pF
Page 1 of 2
MORNSUN reserves the copyright
Specifications subject to change without notice.
COMMON SPECIFICATIONS
Item
Storage humidity
Operating temperature
Storage temperature
Temp. rise at full load
Lead temperature
No-load power consumption
Cooling
Short circuit protection
Case material
MTBF
Weight
1000
4.8
1.5mm from case for 10 seconds
0.2
Free air convection
Continuous, automatic recovery
Plastic(UL94-Vo)
K hours
g
-40
-55
15
300
W
Test Conditions
Min
Typ
Max
95
85
125
°C
Units
%
Recommended Circuit
All the WRA_N-2W & WRB_N-2W 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
(Figure 1)
If
you
want
to
further
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
ripple,
increase
TYPICAL CHARACTERISTICS
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:
12V
100μF
100
Operating Temp.(
C
)
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
First Angle Projection
23.80(0.937)
(0.070)
RECOMMENDED FOOTPRINT
Top
view,grid:2.54mm(0.1inch),
diameter:1.00mm(0.039inch)
13.70(0.539)
(0.400)
1
Bottom view
16
8
Single/ Dual Output
10 9
3.01
(0.119)
15.24 (0.600)
24V
10μF-47μF
Cout: 10μF/100mA
External Capacitor Table(Table 1)
Single Vout
Cout
Dual Vout
(VDC)
(uF)
(VDC)
3.3
2200
±5
5
1000
±9
9
680
±12
12
470
±15
15
330
-
Cout
(uF)
680
470
330
220
-
16
10
9
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
1
7 8
7.62
(0.300)
4.10
(0.161)
Side view
FOOTPRINT DETAILS
Pin
Single
GND
NC
NC
Dual
GND
NC
0V
+Vo
-Vo
Vin
kind of DC/DC module (Figure 2)
General: Ip
≤1.4*Iin-max:
Input Current(A)
2.54
(0.100)
Note:
Unit:mm(inch)
Pin diameter:0.50mm(0.020inch)
Pin diameter tolerances: 0.05mm( 0.002inch)
General tolerances: 0.25mm( 0.010inch)
7
8
9
+Vo
0V
10
Vin
16
NC:No Connection
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_N_2W&WRB_N_2W
A/1-2008
Page 2 of 2
Embedded System
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