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WRE_S-3WR2 & WRF_S-3WR2 2013.07.26-A/3 Page 1 of 7
WRE_S - 3WR2 & WRF_S - 3WR2 Series
3W
，
WIDE INPUT, ISOLATED & REGULATED
DUAL/SINGLE OUTPUT DC-DC CONVERTER
Patent Protected RoHS
PART NUMBER SYSTEM
WRF1205S-3WR2
Product Series
Input Voltage
Output Voltage
Package Style
Rated Power
FEATURES
● Ultra-Miniature SIP Package
● 2:1 wide input voltage range
● Temperature range: -40°C ~ +85°C
● 3KVDC isolation
● Short circuit protection(automatic recovery)
● External On/Off control
● High power density
APPLICATION
The WRE_S-3WR2 & WRF_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 conve
rters, 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) 3KVDC input and output isolation;
3) Regulated and low ripple noise is required.
Such as: industrial control, telecommunication etc.
SELECTION GUIDE
Input Voltage(VDC)
Output Current (mA)
Input Current (mA)(Typ.)
Model Nominal
(Range)
Max. ①
Output
Voltage
(VDC)
Max. Min. @Max.
Load
@No
Load
Reflected
Ripple
Current
(mA, Typ.)
Max.
Capacitive
Load ②
(µF)
Efficiency
(%, Typ.)
@Max.
Load
WRE0505S-3WR2 ±5 ±250 ±13 676 1000 74
WRE0512S-3WR2 ±12 ±104 ±5 650 470 77
WRE0515S-3WR2 ±15 ±83 ±4 650 330 77
WRF0505S-3WR2 5 500 25 685 2200 73
WRF0509S-3WR2 9 278 14 676 1000 74
WRF0512S-3WR2 12 208 10 650 680 77
WRF0515S-3WR2
5
(4.5-9) 11
15 167 8 676
40 30
470 74
WRE1205S-3WR2 ±5 ±300 ±15 321 1000 78
WRE1212S-3WR2 ±12 ±125 ±6 317 470 79
WRE1215S-3WR2 ±15 ±100 ±5 313 330 80
WRF1203S-3WR2 3.3 758 38 278 2700 75
WRF1205S-3WR2 5 600 30 329 2200 76
WRF1209S-3WR2 9 333 17 317 1000 79
WRF1212S-3WR2 12 250 13 305 680 82
WRF1215S-3WR2 15 200 10 302 470 83
WRF1224S-3WR2
12
(9-18) 20
24 125 6 309
20 30
330 81
WRE2405S-3WR2 ±5 ±300 ±15 158 1000 79
WRE2409S-3WR2 ±9 ±167 ±8 155 680 81
WRE2412S-3WR2 ±12 ±125 ±6 151 470 83
WRE2415S-3WR2 ±15 ±100 ±5 151 330 83
WRF2403S-3WR2 3.3 758 38 141 2700 74
WRF2405S-3WR2 5 600 30 155 2200 81
WRF2409S-3WR2 9 333 17 151 1000 83
WRF2412S-3WR2 12 250 13 151 680 83
WRF2415S-3WR2 15 200 10 151 470 83
WRF2424S-3WR2
24
(18-36) 40
24 125 6 151
7 110
330 83
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WRE_S-3WR2 & WRF_S-3WR2 2013.07.26-A/3 Page 2 of 7
WRE4805S-3WR2 ±5 ±300 ±15 79 1000 79
WRE4812S-3WR2 ±12 ±125 ±6 76 470 82
WRE4815S-3WR2 ±15 ±100 ±5 76 330 82
WRF4803S-3WR2 3.3 758 38 70 2700 75
WRF4805S-3WR2 5 600 30 82 2200 76
WRF4812S-3WR2 12 250 13 78 680 80
WRF4815S-3WR2 15 200 10 75 470 84
WRF4824S-3WR2
48
(36-75) 80
24 125 6 77
7 45
330 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 Min. Typ. Max. Unit
5V input -0.7 -- 12
12V input -0.7 -- 25
24V input -0.7 -- 50
Input Surge Voltage (1sec. max.)
48V input -0.7 -- 100
5V input 3.5 4 4.5
12V input 4.5 8 9
24V input 11 16 18
Start-up Voltage
48V input 24 33 36
VDC
Input Filter C Filter
Models ON Ctrl open or be insulated
Ctrl* Models OFF Connect high level voltage, and ensure the current into Ctrl to be 5-10mA
Note: *Please refer to "DESIGN CONSIDERATIONS" as the direction for use of Ctrl.
OUTPUT SPECIFICATIONS
Item Test Conditions Min. Typ. Max. Unit
Output Voltage Accuracy 5% to 100% load -- ±1 ±3
No
-
load Output Voltage Accuracy
①
Input voltage range -- ±1.5 ±5
Output Voltage Balance Dual output, balanced loads -- ±0.5 ±1
Line Regulation Full load, Input voltage from low to high -- ±0.2 ±0.5
Load Regulation 5% to 100% load -- ±0.6 ±1
%
Transient Recovery Time -- 0.5 3 ms
Transient Response Deviation 25% load step change -- ±2.5 ±5 %
Temperature coefficient 100% load -- ±0.02 ±0.03 %/°C
Ripple
②
-- 30 45
Noise
②
20MHz Bandwidth -- 50 100 mVp-p
Output Short Circuit Protection Continuous, automatic recovery
Note: ①.The max. no-load output voltage accuracy for WRF1203S-3WR2 and WRF4803S-3WR2 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 WRE2405S-3WR2 is 65mVp-p.
COMMON SPECIFICATIONS
Item Test Conditions Min. Typ. Max. Unit
Isolation Voltage Input-Output, Tested for 1 minute,
leakage current less than 1 mA
3000 -- -- VDC
Isolation Resistance Input-Output, Test at 500VDC 1000 -- -- MΩ
Isolation Capacitance Input-Output, 100KHz/0.1V -- 30 50 pF
Switching Frequency(PFM Mode)
100% load, nominal input voltage -- 250 -- KHz
MTBF MIL-HDBK-217F@25℃ 1000 -- -- K hours
Case Material Plastic（UL94-V0）
Weight -- 4.9 -- g
ENVIRONMENTAL SPECIFICATIONS
Item Test Conditions Min. Typ. Max. Unit
Storage Humidity Non condensing -- -- 95 %
Operating Temperature Power derating (above85℃, see Figure 5) -40 -- 85 °C
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WRE_S-3WR2 & WRF_S-3WR2 2013.07.26-A/3 Page 3 of 7
Storage Temperature -55 -- 125
Temp. rise at full load Ta=25°C -- 25 --
Lead Temperature 1.5mm from case for 10 seconds -- -- 300
°C
Cooling Free air convection
EMC
SPECIFICATIONS
CE CISPR22/EN55022 CLASS B（Recommended Circuit Refer to Figure1- or Figure 3②）
EMI RE CISPR22/EN55022 CLASS B (Recommended Circuit Refer to Figure1- or Figure 3②)
ESD IEC/EN61000-4-2 Contact ±4KV/ Air ±8KV perf. Criteria B
RS IEC/EN61000-4-3 10V/m perf. Criteria A
IEC/EN61000-4-4 ±2KV （Recommended Circuit Refer to Figure1-①） perf. Criteria B
EFT IEC/EN61000-4-4 ±4KV （Recommended Circuit Refer to Figure 3） perf. Criteria B
Surge IEC/EN61000-4-5 ±2KV （Recommended Circuit Refer to Figure1-① or Figure 3）
perf. Criteria B
CS IEC/EN61000-4-6 3 Vr.m.s perf. Criteria A
EMS
Voltage dips, short and
interruptions immunity IEC/EN61000-4-29 0%-70%
perf. Criteria B
EMC RECOMMENDED CIRCUIT
LDM2
②
C0
TVS
LDM1
MOV
FUSE
①
C1
+
Vin
GND
+Vo
-Vo
(0V)
EUT
LOAD
C2
CY
Ctrl
Cd
D1 R
③
Ctrl
Vin
GND
(Figure1)
Recommended external circuit parameters:
Model Vin：5V Vin:12V Vin:24V Vin:48V
FUSE Choose according to practical input current
MOV -- -- S14K35 S14K60
LDM1 -- -- 56μH 56μH
TVS SMCJ13A SMCJ28A SMCJ48A SMCJ90A
C0 680μF/16V 680μF/25V 330μF/50V 330μF/100V
C1 4.7μF/50V 4.7μF/100V
LDM2 12μH
C2 4.7μF/50V 4.7μF/100V
CY 1nF/3KV
D1 RB160M-60/1A
R Follows: 300-
0.1--
C
DC I
VV
R=
Cd 47nF/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. VC is the voltage to GND from Ctrl, VD is the forward conduction voltage drop of D1,IC 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
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WRE_S-3WR2 & WRF_S-3WR2 2013.07.26-A/3 Page 4 of 7
SINGLE
(Figure 2)
Note: The pad space between input and output GND (CY) must≥2mm.
EMC MODULE APPLICATION CIRCUIT
EUT
GND
Ctrl
-Vo
+Vo
-Vin
+Vin
FT-A/BX1D Load
-Vo
(0V)
+Vo
Vin
Cd
D1 R
Ctrl
C+
-Vin
+Vin FUSE
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 REFER TO FIGURE 1-②)
WRE2415S-3WR2 CE(Class B, Positive line)
WRE2415S-3WR2 CE(Class B, Negative line)
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WRE_S-3WR2 & WRF_S-3WR2 2013.07.26-A/3 Page 5 of 7
WRF1205S-3WR2 CE(Class B, Positive line)
WRF1205S-3WR2 CE(Class B, Negative line)
PRODUCT TYPICAL PERFORMANCE CURVE
Tolerance Envelope Graph
120
100
80
60
40
20
0
-40 0 40 85 105120
Out p u t P o wer P ercent (%)
Output Current Percent(%)
Ambient Temp.()
℃
Temperature Derating Graph
Safe Operating Area
(Figure 5)
Efficiency VS Input Voltage curve
(Full Load)
50
55
60
65
70
75
80
85
90
95
100
18202224262830323436
Input Voltage(V)
Efficiency(%)
WRE2415S-3WR2
Efficiency VS Output Load curve
(Vin=Vin-nominal)
0
10
20
30
40
50
60
70
80
90
100
102030405060708090100
Total Output Current (%)
Efficiency(%)
WRE2415S-3WR2
Efficiency VS Input Voltage curve
(Full Load)
50
55
60
65
70
75
80
85
90
95
100
9101112131415161718
Input Voltage(V)
Efficiency(%)
WRF1205S-3WR2
Efficiency VS Output Load curve
(Vin=Vin-nominal)
0
10
20
30
40
50
60
70
80
90
100
102030405060708090100
Total Output Current (%)
Efficiency(%)
WRF1205S-3WR2
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WRE_S-3WR2 & WRF_S-3WR2 2013.07.26-A/3 Page 6 of 7
OUTLINE DIMENSIONS,RECOMMENDED FOOTPRINT & PACKAGING
TEST CONFIGURATIONS
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with an inductor Lin and Capacitor Cin to simulate the source impedance.
DC
Cin
Lin
DC
Load
Oscilloscope
Current
Probe
Lin(4.7µH) Cin(220µF, ESR < 1.0Ω at 100 KHz)
DESIGN CONSIDERATIONS
1) Requirement on output load
To ensure this module can operate efficiently and reliably, during operation, the minimum output load could not be less than 5% of the full load,
otherwise output ripple maybe increase dr
amatically. If the actual output power is very small, please connect a resistor with proper resistance at the
output end in parallel to increase the load, suppose to use the resistance of 5% rated power, or use our company’s products with a lower rated out
put
power.
2) Recommended circuit
All the WRE_S-3WR2 & WRF_S-3WR2 series have been tested according to the following recommended test circuit before leaving the factory
(see Figure 6).
If you want to further decrease the input/output ripple, you can increase a capacitance-values
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 must be
less than the Max. Capacitive
Load.
General: Cin1: 5V&12V 100μF
24V&48V 10μF
Cin2: 5V&12V 47μF
24V&48V 1μF
Lin: 4.7μH~12μH
Cs: 10μF~22μF
Cout: 100μF(Typ.)
Lout: 2.2μH~10μH
Cd: 47nF/100V
Single output Dual output
+Vo
0V
Cout
6
7
8
Cs
Cin1
Vin
GND
2
1
3
Vc R
Lin
IcD1Cd
Cin2
+Vo
0V
Cout
6
8
7Cout
Lout
Lout -Vo
Cin1
Vin
GND
2
1
Lin
3
Vc R
IcD1Cd
Cin2
(Figure 6)
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WRE_S-3WR2 & WRF_S-3WR2 2013.07.26-A/3 Page 7 of 7
3) Ctrl Terminal
When open or high impedance, the converter works well; When this pin is ‘high’, the converter shut down.
It should be note that the input current
should be between 5-10mA, exceeding the maximum 20mA will cause permanent damage to the converter. The value of R can be derived as follows:
300-
0.1--
C
DC I
VV
R=
For Detailed parameter, please refer to "EMC RECOMMENDED CIRCUIT".
4) Input current
When it is used in unregulated power supply, be sure that the fluctuating range of the power supply and the r
ippled voltage do not exceed the
module standard. Input current of power supply should afford the flash startup average current of this kind of DC/DC module (Figure 7).
General: Vin:5V Iave =1110mA
Vin:12V Iave =640mA
Vin:24V Iave =325mA
Vin:48V Iave =160mA
Input Voltage (V)
Input Voltage
Range
Iave
(Figure 7)
5)
It is not recommended to increase the output power capability by connecting two or more converters in parallel. The product is not
hot-swappable
Note:
1. Min. load shouldn't be less than 5%, otherwise ripple maybe increased dramatically. If the product operates under min. load, it may not be
guaranteed to meet all specifications listed. Operation under minimum load will not damage the converter.
2. Recommended Dual output models unbalanced load is ≤±5%, if the product operates >±5%, it may not be guaranteed to meet all specifications
listed. Please contact our technical support for more details.
3. Max. Capacitive Load is tested at input voltage range and full load.
4. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified.
5. In this datasheet, all test methods are based on our corporate standards.
6. All characteristics are for listed models, and non-standard models may perform differently. Please contact our technical support for more details.
7. Please contact our technical support for any specific requirement.
8. Specifications of this product are subject to changes without prior notice.
MORNSUN 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
Fax: 86-20-38601272
E-mail: info@mornsun.cn
Http://www.mornsun-power.com