DC/DC Converter
WRE_P- 3WR2 & WRF_P- 3WR2 Series
2016.01.15-B/2 Page 1 of 6
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
3W,wide input isolated & regulated single/dual output
DC-DC converter
Patent Protection RoHS
FEATURES
Wide input voltage range (2:1)
High efficiency up to 86%
Isolation voltage 3KVDC
Output short circuit protection(automatic
recovery)
Operating temperature range:-40°C ~ +85°C
EN60950 approval
The WRE_P-3WR2 & WRF_P-3WR2 series are isolated 3W DC-DC products with 2:1 input voltage and conventional voltage output. The
product has a relatively compact DIP package, and features high efficiency, operating temperature of -40℃~+85 ℃, remote control, and
continuous short-circuit protection. The smaller size and fine cost design make the converter an ideal solution in communication,
instruments, and industrial electronics applications.
Selection Guide
Certification
Part No.
Input Voltage
(VDC)
Output
Efficiency (%,
Min./Typ.)
@ Full Load
Nominal
(Range)
Max.①
Output Voltage
(VDC)
Output Current (mA)
(Max./Min.)
CE
WRE0505P-3WR2
5
(4.5-9)
11
±5
±300/±15
74/76
WRE0512P-3WR2
±12
±125/±6
76/78
WRE0515P-3WR2
±15
±100/±5
76/78
WRF0505P-3WR2
5
600/30
72/74
WRF0512P-3WR2
12
250/12
75/77
WRF0515P-3WR2
15
200/10
75/77
WRE1205P-3WR2
12
(9-18)
20
±5
±300/±15
79/81
WRE1209P-3WR2
±9
±166/±8
82/84
WRE1212P-3WR2
±12
±125/±6
82/84
WRE1215P-3WR2
±15
±100/±5
83/85
WRF1203P-3WR2
3.3
909/46
72/74
WRF1205P-3WR2
5
600/30
79/81
WRF1212P-3WR2
12
250/12
81/83
WRF1215P-3WR2
15
200/10
80/82
WRF1224P-3WR2
24
125/6
81/83
WRE2405P-3WR2
24
(18-36)
40
±5
±300/±15
80/82
WRE2412P-3WR2
±12
±125/±6
82/84
WRE2415P-3WR2
±15
±100/±5
82/84
WRF2403P-3WR2
3.3
909/46
76/78
WRF2405P-3WR2
5
600/30
79/81
WRF2412P-3WR2
12
250/12
84/86
WRF2415P-3WR2
15
200/10
84/86
WRF2424P-3WR2
24
125/6
83/85
WRE4803P-3WR2
48
(36-75)
80
±3.3
±454/±23
74/76
WRE4805P-3WR2
±5
±300/±15
80/82
WRE4812P-3WR2
±12
±125/±6
82/84
WRE4815P-3WR2
48
(36-75)
80
±15
±100/±5
83/85
WRF4803P-3WR2
3.3
909/46
74/76
WRF4805P-3WR2
5
600/30
80/82
WRF4812P-3WR2
12
250/12
84/86
WRF4815P-3WR2
15
200/10
84/86
Note:
①.Exceeding the maximum input voltage may cause permanent damage;
②. For dual output converter, the given value is the same for each output.
DC/DC Converter
WRE_P- 3WR2 & WRF_P- 3WR2 Series
2016.01.15-B/2 Page 2 of 6
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Input Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Input Current (full load/no-load)
5VDC input
--
752/40
834/45
mA
12VDC input
--
314/30
348/35
24VDC input
--
152/15
165/20
48VDC input
--
77/5
85/10
Reflected Ripple Current
5VDC input
--
20
--
12VDC input
--
30
--
24VDC input
--
30
--
48VDC input
--
30
--
Input impulse Voltage (1sec. max.)
5VDC input
-0.7
--
12
VDC
12VDC input
-0.7
--
25
24VDC input
-0.7
--
50
48VDC input
-0.7
--
100
Starting Voltage
5VDC input
--
--
4.5
12VDC input
--
--
9
24VDC input
--
--
18
48VDC input
--
--
36
Input Filter
Pi filter
Hot Plug
Unavailable
Output Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Output Voltage Accuracy
5%-100% load
--
±1
±3
%
No load output Voltage Accuracy
Input voltage range
--
±1.5
±5
Balance of Output Voltage
Dual output, balanced load
--
±0.5
±1
Linear Regulation
Full load, the input voltage is from low voltage to
high voltage
--
±0.2
±0.5
Load Regulation
5%-100% load
--
±0.2
±0.5
Transient Recovery Time
25% load step change
--
0.5
2
ms
Transient Response Deviation
--
±2
±5
%
Temperature Coefficient
Full load
--
±0.02
±0.03
%/°C
Ripple&Noise*
20MHz bandwidth,
nominal input voltage
24VDC output
--
100
150
mV p-p
Others
--
50
80
Short circuit Protection
Input voltage range
Continuous, self-recovery
Note: *Ripple and noise are measured by “parallel cable” method, please see DC-DC Converter Application Notes for specific operation.
General Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Insulation Voltage
Input-output, with the test time of 1 minute and
the leak current lower than 1mA
3000
--
--
VDC
Insulation Resistance
Input-output, isolation voltage 500VDC
1000
--
--
MΩ
Isolation Capacitance
Input-output, 100KHz/0.1V
--
30
50
pF
Operating Temperature
Derating if the temperature is ≥85°C (see Fig. 1)
-40
--
85
℃
Storage Temperature
-55
--
125
Casing Temperature Rise
Ta=25℃
--
25
--
Hand Soldering
Welding spot is 1.5mm away from the casing,
10 seconds
--
--
300
Storage Humidity
Non-condensing
5
--
95
%RH
Switching Frequency(PFM mode)
100% load, nominal input voltage
--
200
--
KHz
MTBF
MIL-HDBK-217F@25°C
1000
--
--
K hours
DC/DC Converter
WRE_P- 3WR2 & WRF_P- 3WR2 Series
2016.01.15-B/2 Page 3 of 6
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Physical Specifications
Casing Material
Plastic(UL94-V0)
Dimensions
31.60*20.30*10.20 mm
Weight
14g(Typ.)
Cooling
Free convection
EMC Specifications
EMI
CE
CISPR22/EN55022 CLASS B (see Fig.3-②for recommended circuit)
RE
CISPR22/EN55022 CLASS B (see Fig.3-②for recommended circuit)
EMS
ESD
IEC/EN61000-4-2 Contact ±4KV
perf. Criteria B
RS
IEC/EN61000-4-3 10V/m
perf. Criteria A
EFT
IEC/EN61000-4-4 ±2KV (see Fig.3-①for recommended circuit)
perf. Criteria B
Surge
IEC/EN61000-4-5 ±2KV (see Fig.3-①for recommended circuit)
perf. Criteria B
CS
IEC/EN61000-4-6 3 Vr.m.s
perf. Criteria A
Voltage dips, short interruptions
and voltage variations immunity
IEC/EN61000-4-29 0-70%
perf. Criteria B
Product Characteristic Curve
Output Power Percentage(%)
Environment Temperature.( )
℃
Temperature Derating Curve
120
100
80
60
40
20
0-40 040 85
Safe Operat ion A rea
60
Fig. 1
DC/DC Converter
WRE_P- 3WR2 & WRF_P- 3WR2 Series
2016.01.15-B/2 Page 4 of 6
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Design Reference
1. Typical application
All the DC/DC converters of this series are tested according to the recommended circuit (see Fig. 2) before delivery.
If it is required to further reduce input and output ripple, properly increase the input & output of additional capacitors Cin and Cout or
select capacitors of low equivalent impedance provided that the capacitance is no larger than the max. capacitive load of the product.
DC DC
Vin
GND
+Vo
0V
Cin
Cout
Vin
GND
+Vo
0V
Cin
Cout
DC DC
-Vo
Cout
Dual
Singl e
Fig. 2
Vin
5V&12V
24V&48V
Cin
100µF
10µF~47µF
Cout
10µF
2. EMC solution-recommended circuit
Vin
GND
+Vo
-Vo
(0V)
DC/DC LOAD
C2
LDM1
②
C0
MOV
FUSE
①
C1
CY
Vin
GND
+
1
C3
Fig. 3
Parameter description:
Model
Vin:5V
Vin:12V
Vin:24V
Vin:48V
FUSE
Slow blown fuses according to the actual input current selections of the clients
MOV
--
S14K20
S20K30
S14K60
C0
1000µF/16V
1000µF/25V
330µF/50V
330µF/100V
C1
4.7µF/50V
4.7µF/100V
LDM1
12µH
C2
4.7µF/50V
4.7µF /100V
C3
10µF
CY1
1nF/3KV
Note: ①.Part ①in the Fig. 3 is used for EMS test and part ②for EMI filtering; selected based on needs.
②.If there is no recommended parameters, the model no require the external component.
DC/DC Converter
WRE_P- 3WR2 & WRF_P- 3WR2 Series
2016.01.15-B/2 Page 5 of 6
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
3. Input current
When the electricity is provided by the unstable power supply, please make sure that the range of the output voltage fluctuation and the
ripple voltage of the power supply do not exceed the indicators of the modules. Input current of power supply should afford the flash startup
current of this kind of DC/DC module(see Fig. 5).
Generally: Vin=5V Iave =1297mA
Vin=12V Iave=649mA
Vin=24V Iave=307mA
Vin=48V Iave =158mA
Input Current(A)
Input Voltage (V)
Input Voltage
scope
Iave
Fig. 5
4. Output load requirements
To ensure that the module can work efficiently and reliably, its output min. load shall be no lower than 5% of the rated load when using, or
the output ripple may increase rapidly. Ensure that the product working load must be higher than 5% of the rated load.
5. For more information please find DC-DC converter application notes on www.mornsun-power.com
Dimensions and Recommended Layout
DC/DC Converter
WRE_P- 3WR2 & WRF_P- 3WR2 Series
2016.01.15-B/2 Page 6 of 6
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Notes:
1. Packing information please refer to Product Packing Information which can be downloaded from www.mornsun-power.com. Packing
bag number: 58210008;
2. Recommend to use module with more than 5% load, if not, the ripple of the product may exceeds the specification, but does not
affect the reliability of the product;
3. The recommended unbalance degree of the dual output module load is ≤±5%; if the degree exceeds ±5%, than the product
performance cannot be guaranteed to comply with all parameters in the datasheet. Please contact our technicians directly for
specific information;
4. The maximum capacitive load offered were tested at nominal input voltage and full load;
5. Unless otherwise specified, parameters in this datasheet were measured under the conditions of Ta=25℃, humidity<75%RH with nominal
input voltage and rated output load;
6. All index testing methods in this datasheet are based on Company’s corporate standards;
7. The performance parameters of the product models listed in this manual are as above, but some parameters of non-standard model
products may exceed the requirements mentioned above. Please contact our technicians directly for specific information;
8. We can provide product customization service;
9. Specifications are subject to change without prior notice.
MORNSUN Guangzhou 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: 86-20-38601850-8801 Fax: 86-20-38601272 E-mail: info@mornsun.cn