MORNSUN reserves the copyright Specifications subject to change without notice. WRA_ZP-3W & WRB_ZP-3W A/1-2008 Page 1 of 2
WRA_ZP-3W & WRB_ZP-3W Series
3W, WIDE INPUT, ISOLATED & REGULATED
DUAL/SINGLE OUTPUT, DIP DC-DC CONVERTER
multi-country patent protection RoHS
FEATURES PRODUCT PROGRAM
Input Output
Voltage (VDC) Current (mA) Part Number
Nominal Range Max*
Voltage
(VDC) Max Min
Effiecincy
(%, Typ)
WRA0505ZP-3W ±5 ±300 ±30 68
WRA0509ZP-3W ±9 ±166 ±16 70
WRA0512ZP-3W ±12 ±125 ±12 71
WRA0515ZP-3W ±15 ±100 ±10 71
WRB0503ZP-2W 3.3 600 60 65
WRB0505ZP-3W 5 600 60 68
WRB0512ZP-3W 12 250 25 71
WRB0515ZP-3W
5 4.5-9 11
15 200 20 71
WRA1205ZP-3W ±5 ±300 ±30 76
WRA1209ZP-3W ±9 ±166 ±16 78
WRA1212ZP-3W ±12 ±125 ±12 79
WRA1215ZP-3W ±15 ±100 ±10 80
WRB1203ZP-2W 3.3 600 60 71
WRB1205ZP-3W 5 600 60 76
WRB1212ZP-3W 12 250 25 79
WRB1215ZP-3W
12 9-18 22
15 200 20 80
WRA2405ZP-3W ±5 ±300 ±30 78
WRA2409ZP-3W ±9 ±166 ±16 79
WRA2412ZP-3W ±12 ±125 ±12 80
WRA2415ZP-3W ±15 ±100 ±10 81
WRB2403ZP-3W 3.3 909 90 76
WRB2405ZP-3W 5 600 60 78
WRB2412ZP-3W 12 250 25 81
WRB2415ZP-3W
24 18-36 40
15 200 20 82
WRA4805ZP-3W ±5 ±300 ±30 78
WRA4809ZP-3W ±9 ±166 ±16 79
WRA4812ZP-3W ±12 ±125 ±12 80
WRA4815ZP-3W ±15 ±100 ±10 81
WRB4803ZP-3W 3.3 909 90 76
WRB4805ZP-3W 5 600 60 78
WRB4812ZP-3W 12 250 25 80
WRB4815ZP-3W
48 36-72 80
15 200 20 81
*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.
ISOLATION SPECIFICATIONS
Item Test conditions Min Typ Max Units
Isolation voltage Tested for 1 minute and 1 mA max 1500 VDC
Isolation resistance Test at 500VDC 1000 MΩ
Wide (2:1) Input Range
Operating Temperature:-40 to +85°C
Short circuit protection(automatic recovery)
1500VDC Isolation
Internal SMD construction
Metal Shielding Package
No Heat Sink Required
Industry Standard Pinout
MTBF>1,000,000 hours
RoHS Compliance
APPLICATIONS
The WRB_ZP-3W &WRA_ZP-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.
MODEL SELECTION
WRB0512ZP-3W
Product Series
Input Voltage
Output Voltage
Package Style
Rated Power
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 capacitance Input/Output 85 pF
MORNSUN reserves the copyright Specifications subject to change without notice. WRA_ZP-3W & WRB_ZP-3W A/1-2008 Page 2 of 2
OUTPUT SPECIFICATIONS APPLICATION NOTE
Item Test conditions Min Typ Max Units
Output power See below products program 0.3 3 W
Positive voltage accuracy Refer to recommended circuit ±1 ±3
Negative voltage accuracy Refer to recommended circuit ±3 ±5
10% to 100% load(WRB_ZP_3W) ±0.5 ±0.75
Load regulation
10% to 100% load(WRA_ZP_3W)* ±0.5 ±1
Line regulation Input voltage from low to high ±0.2 ±0.5
%
Temperature drift Refer to recommended circuit ±0.03 %/°C
Ripple & Noise** 20MHz bandwidth 50 100 mVp-p
Switching frequency 100% load, nominal input voltage 300 KHz
*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.
COMMON SPECIFICATIONS
Item Test Conditions Min Typ Max Units
Storage humidity 95 %
Operating temperature -40 85
Storage temperature -55 125
Temp. rise at full load 15
Lead temperature 1.5mm from case for 10 seconds 300
°C
No-load power consumption 0.2 W
Cooling Free air convection
Short circuit protection Continuous, automatic recovery
Case material Copper, Nickel Coated
MTBF 1000 K hours
Weight 15 g
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.
TYPICAL CHARACTERISTICS
Operating Temp.( )C
100
OUTLINE DIMENSIONS& PIN CONNECTIONS
Note:
Unit:mm(inch)
Pin diameter:0.50mm(0.020inch)
Pin tolerances: 0.10mm( 0.004inch)
General tolerances: 0.25mm( 0.010inch)
± ±
± ±
RECOMMENDED FOOTPRINT
Top view,grid:2.54mm(0.1inch),
diameter:1.00mm(0.039inch)
Dual Output
Single Output
First Angle Projection
FOOTPRINT DETAILS
Pin Single Dual
NC:No Connection
2 3 9 11
14162223
22,23
2 3 11
2322 14
4.57
32.00
2.54
22.86
1
0.
00
4
.1
0
(0
.6
00
)
(1.260)
(0.100) (0.180)
(0.900)
20
.0
0
(0
.7
87
)
(0
.1
61
)
(0
.0
94
)
0
.3
94
)
(
0
.5
0
(0
.0
20
)
( )Bottom View
( )Side View
2,3
9
11
14
16
Vin
GND
No Pin
NC
+Vo
0V
Vin
GND
+Vo
0V
0V
-Vo
2 3 11
14162223
16
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.
Recommended Circuit
All the WRA_ZP-3W & WRB_ZP-3W Series
have been tested according to the following
recommended testing circuit before leaving factory
(Figure 1). This series should be tested under
load.
DC DC
Vin
GND
+Vout
0V
Cin
Vin
GND
+Vout
0VCin DC DC
-Vout
Single Output
(Figure 1)
If you want to further decrease the input/output
ripple, you can 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
(VDC)
Cout
(uF)
Dual Vout
(VDC)
Cout
(uF)
3.3 2200 ±5 680
5 1000 ±9 470
12 470 ±12 330
15 330 ±15 220
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 (See figure 2), General: Ip ≤1.4*Iin-max
In
pu
t C
ur
re
nt
(A
)
Input Voltage (V)
Input Voltage
Range
Ip
No parallel connection or plug and play.
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