WRF1215MT-3W [MORNSUN]
SINGLE OUTPUT , DC-DC CONVERTER;
| 型号： | WRF1215MT-3W |
| 厂家： | 
MORNSUN SCIENCE& TECHNOLOGY LTD. |
| 描述： | SINGLE OUTPUT , DC-DC CONVERTER DC-DC转换器 输出元件 |
| 文件： | 总6页 (文件大小：548K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
FEATURES
●Efficiency up to 83%
●2:1 wide input voltage range
●Operating Temperature range: -40 ~ +85℃
●No Power derating (≤85℃)
●3.0KVDC isolation
WRF_MT-3W Series
3W，WIDE INPUT, ISOLATED & REGULATED
SINGLE OUTPUT , DC-DC CONVERTER
●Ultra-Miniature, SMD Package
●Short Circuit Protection(automatic recovery)
●Low no-load power consumption
●External On/Off control
Patent Protected RoHS
PART NUMBER SYSTEM
WRF2405MT-3W
APPLICATION
The WRF_MT-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. For these DC-DC converters,
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.
Rated power
Package
Output voltage
Input voltage
Product series
These products apply to where:
1) Input voltage range ≤2:1;
2) 3.0KVDC input and output isolation;
3) Regulated and low ripple noise is required.
SELECTION GUIDE
Reflected
Ripple
Current
Efficiency
(%, Typ.)
@Max.
Load
Input Voltage(VDC)
Output Current (mA) Input Current (mA)(Typ.)
Output
Voltage
(VDC)
Max.
Capacitive
Load (µF)
Nominal
Model
①
@Max.
Load
@No
Load
Max.
Min.
Max.
(Range)
(mA,Typ.)
WRF1203MT-3W
WRF1205MT-3W
WRF1212MT-3W
WRF1215MT-3W
WRF2403MT-3W
WRF2405MT-3W
WRF2412MT-3W
WRF2415MT-3W
WRF2424MT-3W
WRF4803MT-3W
WRF4805MT-3W
WRF4812MT-3W
WRF4815MT-3W
3.3
5
909
600
250
200
909
600
250
200
125
909
600
250
200
45
30
12
10
45
30
12
10
6
342
323
316
316
166
156
152
152
157
84
2700
2200
680
74
77
79
79
74
81
82
82
80
74
80
83
83
12
20
20
30
110
45
(9-18)
12
15
3.3
5
470
2700
2200
680
24
40
7
12
15
24
3.3
5
(18-36)
470
330
45
30
12
10
2700
2200
680
78
48
80
7
(36-75)
12
15
74
74
470
Note:①.Absolute maximum rating without damage on the converter.
INPUT SPECIFICATIONS
Item
Test Conditions
12VDC input
Min.
Typ.
Max.
25
Unit
-0.7
-0.7
-0.7
4.5
11
--
--
--
--
--
--
24VDC input
48VDC input
12VDC input
24VDC input
48VDC input
Input Surge Voltage (1sec. max.)
50
100
9
VDC
18
Start-up Voltage
Input Filter
24
36
Capacitor
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2013.06.26-A/1
Page 1 of 6
Models ON
Models OFF
Ctrl open or be insulated
Ctrl*
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.
±1
Max.
±3
Unit
%
Output Voltage Accuracy
No-load Output Voltage Accuracy
Line Regulation
5% to 100% load
Input voltage range
--
±1.5
±0.2
±0.2
0.5
±5
Full load, Input voltage from low to high
5% to 100% load
--
±0.5
±0.8
3
Load Regulation
--
Transient Recovery Time
Transient Response Deviation
--
ms
%
25% load step change
100% load
--
±2.5
±5
Temperature coefficient
Ripple*
--
--
--
±0.02
30
±0.03
45
%/°C
mVp-p
20MHz Bandwidth
Noise*
45
100
Output Short Circuit Protection
Input voltage range
Continuous, automatic recovery
Note:* Ripple and noise tested with “parallel cable” method. See detailed operation instructions at DC-DC Application Notes.
COMMON SPECIFICATIONS
Item
Test Conditions
Min.
Typ.
--
Max.
--
Unit
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Input-Output, Tested for 1 minute, leakage current less than 1 mA
Input-Output, Test at 500VDC
3000
VDC
1000
--
--
35
250
--
--
45
--
MΩ
pF
Input-Output,100KHz / 0.1V
Switching Frequency(PFM Mode) 100% load, Nominal Input voltage
--
KHz
MTBF
MIL-HDBK-217F@25℃
1000
--
K hours
Case Material
Weight
Epoxy Resin (UL94-V0)
--
4.8
--
g
ENVIRONMENTAL SPECIFICATIONS
Item
Test Conditions
Min.
Typ.
--
Max.
95
Unit
%
Storage Humidity
Operating Temperature
Storage Temperature
Temp. rise at full load
Lead Temperature
Cooling
Non condensing
--
-40
-55
--
Power derating (above85℃,see Figure 5)
--
85
--
125
--
°C
Ta=25°C
25
--
1.5mm from case for 10 seconds
--
300
Free air convection
EMC SPECIFICATIONS
CE
CISPR22/EN55022 CLASS B(Recommended Circuit Refer to Figure1-② or Figure 3)
CISPR22/EN55022 CLASS B(Recommended Circuit Refer to Figure1-② or Figure 3)
EMI
RE
ESD
RS
IEC/EN61000-4-2
Contact ±4KV/ Air ±8KV
perf. Criteria B
IEC/EN61000-4-3
IEC/EN61000-4-4
IEC/EN61000-4-4
IEC/EN61000-4-5
IEC/EN61000-4-6
10V/m
perf. Criteria A
perf. Criteria B
perf. Criteria B
perf. Criteria B
perf. Criteria A
±2KV
(Recommended Circuit Refer to Figure1-①)
(Recommended Circuit Refer to Figure 3)
EFT
±4KV
EMS
Surge
CS
±2KV
(Recommended Circuit Refer to Figure1-① or Figure 3)
3 Vr.m.s
Voltage dips, short and
interruptions immunity
IEC/EN61000-4-29 0%-70%
perf. Criteria B
The copyright and authority for the interpretation of the products are reserved by MORNSUN
WRF_MT-3W
2013.06.26-A/1
Page 2 of 6
EMC RECOMMENDED CIRCUIT
LD M1
L DM2
FU SE
Vin
Vin
+Vo
D1
R
+
Ctrl
Ctrl EUT
G ND 0V
L O AD
C1
C2
CY
M O V
TVS
C0
C d
G N D
①
②
③
(Figure 1)
Recommended external circuit parameters:
Model
FUSE
MOV
LDM1
TVS
C0
Vin:12V
Vin:24V
Vin:48V
Slow blow ,choose according to actual input current
--
S14K35
56μH
S14K60
56μH
--
SMCJ28A
680uF/50V
SMCJ48A
SMCJ90A
330μF/100V
4.7μF/100V
330μF/50V
4.7μF/50V
12μH
C1
LDM2
C2
4.7μF/50V
1nF/3KV
4.7μF/100V
CY
D1
RB160M-60/1A
VC -VD -1.0
Follows:
R =
-300
R
IC
Cd
47nF/100V
Note: 1. In Figure 1, part ① is the recommended external circuit for EMS, and part ② is for EMI. Choose according to requirements;
2. If there is no recommended parameters, the model no require the external component;
3. VC is the voltage Between Ctrl and GND, 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.
EMC RECOMMENDED CIRCUIT PCB LAYOUT
(Figure 2)
Note: The pad space between input and output GND (CY) must be≥2mm.
EMC MODULE APPLICATION CIRCUIT
LDM
FUSE
+Vo
0V
Vin
+Vin
FT-A/BX1D
+Vin
-Vin
EUT
D1
Cd
R
Ctrl
+
+Vo
-Vo
Ctrl
Load
C
-Vin
GND
C1
FT-A/BX1D is MORNSUN’s EFT suppresser. For specific model, please refer to the selection guide.
For nominal voltage <48V,C≥330μF/50V
For nominal voltage =48V,C≥330μF/100V
LDM=12uH,C1=1nF/3000V
(Figure 3)
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WRF_MT-3W
2013.06.26-A/1
Page 3 of 6
EMC MODULE RECOMMENDED CIRCUIT PCB LAYOUT
(Figure 4)
EMI TEST WAVEFORM (NOMINAL AND FULL LOAD)
WRF2405MT-3W CE(Class B, Positive line)
WRF2405MT-3W CE(Class B, Negative line)
PRODUCT TYPICAL PERFORMANCE CURVE
Temperature Derating Graph
2 5 0
Peak.Temp 240
10Sec Max.
220℃.
℃
120
100
80
2 0 0
1 5 0
1 0 0
60 Sec Max
(>220
)
℃
60
Safe Operating Area
40
20
0
5 0
0
105 120
85
-40
0
40
Ambient Temp.(
℃
)
Time (sec.)
Note: The curve only applies to the hot air reflow soldering
(Figure 5)
Efficiency VS Input Voltage curve
Efficiency VS Output Load curve
WRF2405MT-3W
WRF2405MT-3W
(Vin=Vin-nominal)
(Full Load)
100
90
80
70
60
50
40
30
20
10
100
95
90
85
80
75
70
65
60
55
50
0
18 20 22 24 26 28 30 32 34 36
10 20 30 40 50 60 70 80 90 100
Input Voltage(V)
Total Output Current (%)
Efficiency VS Input Voltage curve
Efficiency VS Output Load curve
WRF4815MT-3W
(Full Load)
WRF4815MT-3W
(Vin=Vin-nominal)
100
95
90
85
80
75
70
65
60
55
50
100
90
80
70
60
50
40
30
20
10
0
36 42 45 48 54 60 66 69 72 75
10 20 30 40 50 60 70 80 90 100
Input Voltage(V)
Total Output Current (%)
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WRF_MT-3W
2013.06.26-A/1
Page 4 of 6
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.
Oscilloscope
Lin
Current
Probe
Load
Cin
DC
DC
Lin(4.7µH)
Cin(220µF, ESR < 1.0Ω at 100 KHz)
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WRF_MT-3W
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Page 5 of 6
DESIGN CONSIDERATIONS
1) Requirement of output load
To ensure this module operate efficiently and reliably, during operation, the minimum output load could not be less than 5% of the full load,
otherwise ripple maybe increase dramatically. To ensure this module operate normally, the load must be more than 5% of the full load.
2) Recommended circuit
All the WRF_MT-3W Series have been tested according to the following recommended test circuit (see Figure 6).
If you want to further decrease the input/output ripple, 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. Provided the safe and reliable
operation is ensured, the greatest capacitance of its filter capacitor must be less than the Max. Capacitive Load.
Recommended circuit refer to"EMC RECOMMENDED CIRCUIT".
LD M2
Vi n
Vin
+Vo
+Vo
C 2
C1
C d
EUT
G N D
Ctrl
G ND
Vc
Cout
0V
0 V
D 1
R
(Figure 6)
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:
VC -VD -1.0
R =
-300
IC
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 rippled voltage do not exceed the
module standard. Input current of power supply should afford the flash startup current of this kind of DC/DC module (Figure 7).
General: Vin=12V Ip =675mA
Vin=24V Ip =320mA
Vin=48V Ip =160mA
Ip
Input Voltage
Range
Input Voltage (V)
(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 with 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 nominal input voltage 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
The copyright and authority for the interpretation of the products are reserved by MORNSUN
WRF_MT-3W
2013.06.26-A/1
Page 6 of 6
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