DC/DC Converter
URB_YMD-20WR3 Series
2019.03.19-A/3 Page 1 of 9
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20W isolated DC-DC converter DIP package,
Ultra-wide input and regulated single output
CB Patent Protection RoHS
FEATURES
Ultra-wide 4:1 input voltage range
High efficiency up to 91%
I/O isolation test voltage 1.5k VDC
Input under-voltage protection, output short circuit,
over-current, over–voltage protection
Operating ambient temperature range -40℃~
+105℃
Input reverse polarity protection available with
chassis(A2S) or 35mm DIN-rail mounting(A4S) version
IEC62368, UL62368, EN62368 approved
E
URB_YMD-20WR3 series of isolated DC-DC converter products feature an ultra-wide 4:1 input voltage with efficiency of up to 91%, 1500VDC
input to output isolation, an operating ambient temperature range of -40℃~ +105℃, input under-voltage protection, output over-voltage,
overcurrent, short circuit protection, which makes them widely used in industrial control, electric power, instruments and communications
applications. Optional packages are offered for chassis or DIN-rail mounting (A2S, A4S), adding additional input reverse polarity protection.
Selection Guide
Certification
Part No. ①
Input Voltage (VDC)
Output
Full Load
Efficiency④
(%) Min./Typ.
Max.
Capacitive
Load(µF)
Nominal②
(Range)
Max.③
Voltage (VDC)
Current(mA)
Max./Min.
UL/CE/CB
URB2403YMD-20WR3
24
(9-36)
40
3.3
5000/0
86/88
10000
URB2405YMD-20WR3
5
4000/0
88/90
10000
--
URB2406YMD-20WR3
6
3333/0
87/89
10000
UL/CE/CB
URB2412YMD-20WR3
12
1667/0
88/90
1600
URB2415YMD-20WR3
15
1333/0
89/91
1000
URB2424YMD-20WR3
24
833/0
89/91
500
URB4803YMD-20WR3
48
(18-75)
80
3.3
5000/0
86/88
10000
URB4805YMD-20WR3
5
4000/0
88/90
10000
URB4812YMD-20WR3
12
1667/0
89/91
1600
URB4815YMD-20WR3
15
1333/0
89/91
1000
URB4824YMD-20WR3
24
833/0
89/91
500
Notes：
1Use “H” suffix for heat sink mounting, “A2S” suffix for chassis mounting and “A4S” suffix for DIN-Rail mounting. We recommend to choose modules with a heat
sink for enhanced heat dissipation and applications with extreme temperature requirements;
2The A2S and A4S Model’s start-up and minimum input voltages are increased by 1VDC due to the input reverse polarity protection circuit;
3Absolute maximum stress rating without damage (not recommended);
4Efficiency is measured at nominal input voltage and rated output load; efficiencies for A2S and A4S Model’s is decreased by 2% due to the input reverse
polarity protection circuit.
DC/DC Converter
URB_YMD-20WR3 Series
2019.03.19-A/3 Page 2 of 9
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Input Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Input Current (full load /
no-load)
24VDC nominal input series,
nominal input voltage
3.3V output
--
782/30
800/50
mA
5V output
--
926/35
947/55
6V output
--
936/50
958/70
12V output
--
926/6
947/15
15V output
--
916/6
937/15
24V output
--
916/10
937/20
48VDC nominal input series,
nominal input voltage
3.3V output
--
391/15
400/30
5V output
--
463/20
474/30
12V output
--
458/3
469/15
mA
15V output
--
458/3
469/15
24V output
--
458/4
469/15
Reflected Ripple Current
Nominal input series,
--
30
--
Surge Voltage (1sec. max.)
24VDC nominal input series
-0.7
--
50
VDC
48VDC nominal input series
-0.7
--
100
Start-up Voltage
24VDC nominal input series
--
--
9
48VDC nominal input series
--
--
18
Under-voltage Protection
24VDC nominal input series
5.5
6.5
--
48VDC nominal input series
12
15.5
--
Start-up Time
Nominal input voltage & constant resistance load
--
10
--
ms
Input Filter
Pi filter
Hot Plug
Unavailable
Ctrl*
Module on
Ctrl pin open or pulled high (TTL 3.5-12VDC)
Module off
Ctrl pin pulled low to GND (0-1.2VDC)
Input current when off
--
2
7
mA
Note: *The Ctrl pin voltage is referenced to input GND.
Output Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Voltage Accuracy
0%-100% load
--
±1
±3
%
Linear Regulation
Input voltage variation from low to high at full load
--
±0.2
±0.5
Load Regulation
5%-100% load
--
±0.5
±1
Transient Recovery Time
25% load step change,
nominal input voltage
--
300
500
µs
Transient Response Deviation
3.3V/ 5V/ 6V output
--
±5
±8
%
Others
--
±3
±5
Temperature Coefficient
Full load
--
--
±0.03
%/℃
Ripple & Noise*
20MHz bandwidth, 5%-100% load
--
50
100
mV p-p
Trim
Input voltage range
90
--
110
%Vo
Over-voltage Protection
110
--
160
Over-current Protection
110
150
190
%Io
Short-circuit Protection
Hiccup, continuous, self-recovery
Note:
*Ripple & Noise at < 5% load is 5%Vo max. The ”parallel cable” method is used for Ripple and Noise test, please refer to DC-DC Converter Application Notes for
specific information.
DC/DC Converter
URB_YMD-20WR3 Series
2019.03.19-A/3 Page 3 of 9
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General Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Isolation
Input-output Electric Strength Test for 1 minute with
a leakage current of 1mA max.
1500
--
--
VDC
Input/output-case Electric Strength Test for 1
minute with a leakage current of 1mA max.
1000
--
--
Insulation Resistance
Input-output resistance at 500VDC
1000
--
--
MΩ
Isolation Capacitance
Input-output capacitance at 100KHz/0.1V
--
2000
--
pF
Operating Temperature
See Fig. 1
3.3V/ 5V /6V output
-40
--
+95
℃
Others
-40
--
+105
Storage Temperature
-55
--
+125
Storage Humidity
Non-condensing
5
--
95
%RH
Pin Soldering Resistance
Temperature
Soldering spot is 1.5mm away from case for 10
seconds
--
--
+300
℃
Vibration
10-150Hz, 5G, 0.75mm. along X, Y and Z
Switching Frequency*
PWM mode
3.3V/ 5V/ 6V output
--
300
--
KHz
Others
--
270
--
MTBF
MIL-HDBK-217F@25℃
1000
--
--
K hours
Note:*Switching frequency is measured at full load. The module reduces the switching frequency for light load (below 50%) efficiency improvement.
Mechanical Specifications
Case Material
Aluminum alloy
Dimensions
Horizontal package (without heat sink)
25.40 ×25.40 ×11.70 mm
Horizontal package (with heat sink)
25.40 ×25.40 ×16.20 mm
A2S wiring package (without heat sink)
76.00 ×31.50 ×21.20 mm
A2S wiring package (with heat sink)
76.00 ×31.50 ×25.20 mm
A4S Din-rail package (without heat sink)
76.00 ×31.50 ×25.80 mm
A4S Din-rail package (with heat sink)
76.00 ×31.50 ×29.80 mm
Weight
without heat sink
Horizontal package/A2S wiring package/A4S Din-rail
package
15.0g/38.0g/58.0g(Typ.)
with heat sink
Horizontal package/A2S wiring package/A4S Din-rail
package
20.0g/40.0g/60.0g(Typ.)
Cooling method
Free air convection
Electromagnetic Compatibility (EMC)
Emissions
CE
CISPR32/EN55032
CLASS B (see Fig.3-②for recommended circuit)
RE
CISPR32/EN55032
CLASS B (see Fig.3-②for recommended circuit)
Immunity
ESD
IEC/EN61000-4-2 Contact ±6KV, Air ±8KV
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 A
Surge
IEC/EN61000-4-5 line to line ±2KV (see Fig.3-①for recommended circuit)
perf. Criteria B
CS
IEC/EN61000-4-6 3 Vr.m.s
perf. Criteria A
DC/DC Converter
URB_YMD-20WR3 Series
2019.03.19-A/3 Page 4 of 9
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
Typical Characteristic Curves
Nominal input voltage, 3.3V, 5V, 6V output
Nominal input voltage, 12V, 15V, 24V output
Fig. 1
Design Reference
1. Typical application
All DC-DC converters of this series are tested before delivery using the recommended circuit shown in Fig. 2.
Input and/or output ripple can be further reduced by appropriately increasing the input & output capacitor values Cin and Cout and/or by
selecting capacitors with a low ESR (equivalent series resistance). Also make sure that the capacitance is not exceeding the specified max.
capacitive load value of the product.
DC DC
Vin
GND
+Vo
0V
Cin
Cout
Fig. 2
Vout (VDC)
Cin (µF)
Cout (µF)
3.3/5/6/12/15
100
100
24
47
DC/DC Converter
URB_YMD-20WR3 Series
2019.03.19-A/3 Page 5 of 9
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2. EMC compliance circuit
Fig. 3
Notes: We use Part ①in Fig. 3 for Immunity tests and Part ②for Emissions test.
Parameter description:
Model
Vin:24V
Vin:48V
FUSE
Select fuse value according to actual input
current
C0, C4
330µF/50V
330µF/100V
C1, C2
4.7µF/50V
4.7µF/100V
C3
Refer to the Cout in Fig.2
LDM1
2.2µH/4A
2.2µH/2A
CY1, CY2
1nF/2KV
3. Trim Function for Output Voltage Adjustment (open if unused)
0V
R2
R1
R3
Vref
RT
Trim
Vo’
0V
R2
R1
R3
Vref
RT
Trim
Vo’
Trim up Trim down
TRIM resistor connection (dashed line shows internal resistor network)
Calculating Trim resistor values:
up: a= Vref
Vo’-Vref R1
R =TaR2
R -a2-R3
down: a= Vref
Vo’-Vref R2
R =TaR1
R -a1-R3
Vout(V)
R1(KΩ)
R2(KΩ)
R3(KΩ)
Vref(V)
3.3
4.829
2.87
15
1.24
5
2.894
2.87
10
2.5
6
4.064
2.87
10
2.5
12
11.000
2.87
17.4
2.5
15
14.494
2.87
17.4
2.5
24
24.872
2.87
20
2.5
RT= Trim Resistor value;
a = self-defined parameter;
Vo’ = desired output voltage
4. The products do not support parallel connection of their output
5. For additional information please refer to DC-DC converter application notes on
www.mornsun-power.com
DC/DC Converter
URB_YMD-20WR3 Series
2019.03.19-A/3 Page 6 of 9
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Horizontal Package (without heat sink) Dimensions and Recommended Layout
Horizontal Package (with heat sink) Dimensions
DC/DC Converter
URB_YMD-20WR3 Series
2019.03.19-A/3 Page 7 of 9
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URB_YMD-20WR3A2S Dimensions
URB_YMD-20WHR3A2S (with heat sink) Dimensions
DC/DC Converter
URB_YMD-20WR3 Series
2019.03.19-A/3 Page 8 of 9
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URB_YMD-20WR3A4S Dimensions
URB_YMD-20WHR3A4S(with heat sink) Dimensions
DC/DC Converter
URB_YMD-20WR3 Series
2019.03.19-A/3 Page 9 of 9
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Note:
1. For additional information on Product Packaging please refer to www.mornsun-power.com. Packaging bag number: 58210003 (DIP),
58200048 (with heat sink), 58220022 (A2S/A4S package);
2. The maximum capacitive load offered were tested at input voltage range and full load;
3. 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;
4. All index testing methods in this datasheet are based on company corporate standards;
5. We can provide product customization service, please contact our technicians directly for specific information;
6. Products are related to laws and regulations: see "Features" and "EMC";
7. Our products shall be classified according to ISO14001 and related environmental laws and regulations, and shall be handled by
qualified units.
Mornsun Guangzhou Science & Technology Co., Ltd.
Address: No. 5, Kehui St. 1, Kehui Development Center, Science Ave., Guangzhou Science City, Huangpu District, Guangzhou, P. R. China
Tel: 86-20-38601850 Fax: 86-20-38601272 E-mail: info@mornsun.cn www.mornsun-power.com
