URB_MT-3WR3 series products are of 3W output power, extremely wide range of voltage input of 9-36VDC, 18-75VDC, isolation voltage of
1500VDC, output short circuit protection, these products are widely used in fields such as industrial control, electric power, instruments and
communication.
Selection Guide
Certification
Part No.
URB2405MT-3WR3
CE/UL/CB
URB2412MT-3WR3
URB2415MT-3WR3
URB2424MT-3WR3
--
URB4815MT-3WR3
48
(18-75)
80
24
(9-36)
40
Input Voltage (VDC)
Nominal
Max.
①
(Range)
Output
Output Voltage Output Current (mA)
(Max./Min.)
(VDC)
5
12
15
24
15
600/0
250/0
200/0
125/0
200/0
Efficiency
②
(%,Typ.)
@ Full Load
78/80
80/82
81/83
80/82
82/84
Max.
Capacitive
Load(µF)
2200
680
470
100
470
Notes:
①Exceeding
the maximum input voltage may cause permanent damage;
②The
efficiency value is measured in the input nominal voltage and output rated load.
Input Specifications
Item
Input Current (full load / no-load)
Reflected Ripple Current
Input impulse Voltage (1sec. max.)
Starting Voltage
Input under-voltage protection
Starting Time
Input Filter
Module turn-on
Ctrl*
Hot Plug
Note: *The voltage of Ctrl pin is relative to input pin GND.
Operating Conditions
24VDC input
48VDC input
24VDC input
48VDC input
24VDC input
48VDC input
24VDC input
48VDC input
24VDC input
48VDC input
Nominal input& constant resistance load
Min.
--
--
--
--
-0.7
-0.7
--
--
5.5
13
--
Typ.
158/4
79/3
120
60
--
--
--
--
6.5
15.5
10
C filter
Max.
173/6
81/5
--
--
50
100
9
18
--
--
--
Unit
mA
VDC
ms
Ctrl pin floating or connected to TTL high level(3.5-12VDC)
Ctrl pin connected to GND or low level(0-1.2VDC)
--
6
Unavailable
10
mA
Module turn-off
Input current when switched off
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DC/DC Converter
URB_MT-3WR3 Series
Output Specifications
Item
Output Voltage Accuracy
Line Regulation
Load Regulation
Transient Recovery Time
Transient Response Deviation
Temperature Coefficient
Ripple & Noise*
Over-current Protection
Short circuit Protection
Full load, the input voltage is from low voltage to
high voltage
0%-100% load
25% load step change
Full load
20MHz bandwidth,5%-100% load
Input voltage range
Operating Conditions
Min.
--
--
--
--
--
--
--
--
Typ.
±1
±0.2
±0.5
300
±3
--
30
150
Max.
±3
±0.5
±1
500
±5
±0.03
120
250
Unit
%
µs
%
%/℃
mV p-p
%Io
Hiccup protection
Note: *Ripple and noise are measured by “parallel cable” method, please see DC-DC Converter Application Notes for specific operation.
0%-5% load ripple&Noise is no more than 5%Vo.
General Specifications
Item
Insulation Voltage
Insulation Resistance
Isolation Capacitance
Operating Temperature
Storage Temperature
Casing Temperature Rise
Pin Welding Resistance
Temperature
Storage Humidity
Reflow Soldering
Temperature
Vibration
Switching Frequency*
MTBF
PWM Mode
MIL-HDBK-217F@25℃
--
1000
Ta=25℃, nominal input, full load output
Welding spot is 1.5mm away from the casing, 10
seconds
Non-condensing
Operating Conditions
Input-output, with the test time of 1 minute and the
leak current lower than 1mA
Input-output, insulation voltage 500VDC
Input-output, 100KHz/0.1V
Derating if the temperature is
≥71℃
(see Fig. 1)
Min.
1500
1000
--
-40
-55
--
--
5
Typ.
--
--
1000
--
--
+65
--
--
Max.
--
--
--
+85
+125
--
+300
95
%RH
℃
Unit
VDC
MΩ
pF
Peak temp.≤245℃, maximum duration time≤60s
at 217℃.
For actual application, please refer to IPC/JEDEC
J-STD-020D.1.
10-55Hz, 10G, 30 Min. along X, Y and Z
350
--
--
--
KHz
K hours
Note:*This series of products using lower frequency technology, the switching frequency value is the test value in full load, when the load is reduced to 50% or less,
the switching frequency decreases with decreasing load.
Physical Specifications
Casing Material
Dimensions
Weight
Cooling Method
Black flame-retardant heat-proof plastic
19.20*18.10*10.16 mm
3.50g(Typ.)
Free convection
EMC Specifications
EMI
CE
RE
ESD
RS
EFT
EMS
Surge
CS
Immunities of voltage dip, drop and
short interruption
CISPR22/EN55022 CLASS B (see Fig.3-② for recommended circuit)
CISPR22/EN55022 CLASS B (see Fig.3-② for recommended circuit)
IEC/EN61000-4-2
IEC/EN61000-4-3
IEC/EN61000-4-4
IEC/EN61000-4-5
IEC/EN61000-4-6
Contact ±4KV
10V/m
±2KV (see Fig.3-① for recommended circuit)
±2KV (see Fig.3-① for recommended circuit)
3 Vr.m.s
perf. Criteria B
perf. Criteria A
perf. Criteria B
perf. Criteria B
perf. Criteria A
perf. Criteria B
IEC/EN61000-4-29 0-70%
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DC/DC Converter
URB_MT-3WR3 Series
Product Characteristic Curve
Output Powe r Pe rcentage(%)
120
100
80
60
40
20
0
-40
0
40
71 85
120
Operating Te mperature(
℃
)
Fig. 1
Te mperature De rating Cur ve
Safe Operating Area
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.
Vn
24VDC
0V
Vin
+Vo
Cin
100µF
10µF ~47µF
Cout
10µF
10µF
Cin
GND
DC
DC
Cout
48VDC
Fig. 2
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DC/DC Converter
URB_MT-3WR3 Series
2. EMC solution-recommended circuit
Parameter description
FUSE
LDM1
Vi n
+
MOV
GND
C0
C1
+
C2
C3
+Vo
C4
LOAD
Vi n
Model
FUSE
MOV
C0,C1
C2,C3
C4
LDM1
CY1
Vin:24V
S14K35
330µF/50V
4.7µF/50V
12µH
1nF/2KV
Vin:48V
S14K60
330µF/100V
4.7µF/100V
Choose according to actual input current
DC/DC
GND
0V
①
②
CY1
Refer to the Cout in Fig.2
Fig. 3
Notes: Part
①
in the Fig. 3 is used for EMS test and part
②
for EMI filtering;
selected based on needs.
EMC solution-recommended circuit PCB layout
Fig. 4
Note: the min. distance of the bonding pads between input & output isolation capacitors (CY1) shall be
≥
2mm.
3. It is not allowed to connect modules output in parallel to enlarge the power
4. For more information about Mornsun EMC Filter products, please visit
www.mornsun-power.com
to
download the Selection Guide of EMC Filter
Dimensions and Recommended Layout
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DC/DC Converter
URB_MT-3WR3 Series
Notes:
1. Packing information please refer to Product Packing Information which can be downloaded from
www.mornsun-power.com.
Tube
Packing Bag Number : 58010114, Reel Packing Bag Number : 58010115 ;
2. Recommended used in more than 5% load, if the load is lower than 5%, then the ripple index of the product may exceed the
specification, but does not affect the reliability of the product;
3. The max. capacitive load should be tested within the input voltage range and under full load conditions;
4. If the product needs to be cleaned after welding, please wait to completely dried before electrical use it;
5. Unless otherwise specified, data in this datasheet should be tested under the conditions of Ta=25℃, humidity<75% when inputting
nominal voltage and outputting rated load;
6. All index testing methods in this datasheet are based on our Company’s corporate standards;
7. The performance indexes of the product models listed in this datasheet are as above, but some indexes of non-standard model
products will exceed the above-mentioned requirements, and please directly contact our technicians for specific information;
8. We can provide product customization service;
9. Specifications of this product are subject to changes 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
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