DC/DC Converter
VRA_YMD-10WR3 & VRB_YMD-10WR3 Series
2019.02.10-A/4 Page 1 of 7
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
10W isolated DC-DC converter in DIP package,
Ultra-wide input and regulated dual/single output
Patent Protection RoHS
FEATURES
Wide 2:1 input voltage range
High efficiency up to 88%
No load power consumption as low as 0.12W
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℃~
+85℃
Meets CISPR32/EN55032 CLASS A, without extra
components
Input reverse polarity protection available with
chassis(A2S) or 35mm Din-rail mounting(A4S)
version
Industry standard pin-out
EN60950 approved
VRA_YMD-10WR3 & VRB_YMD-10WR3 series are isolated 10W DC-DC converter products with a 2:1 input voltage range. They feature
efficiencies of up to 88%, 1500VDC input to output isolation, operating temperature of -40℃~ +85℃, input under-voltage protection,
output over-voltage, over-current and short circuit protection. They meet CLASS A CISPR32/EN55032 EMI standards without external
components and they are widely used in applications such as industrial controls, electric power, instrumentation and communications.
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.
Nominal②
(Range)
Max. ③
Current(mA)
Max./Min.
CE
VRA0505YMD-10WR3
5
(4.5-9)
12
±1000/0
78/80
VRA0512YMD-10WR3
±417/0
83/85
VRA0515YMD-10WR3
±334/0
84/86
VRA0524YMD-10WR3
±209/0
83/85
VRB0512YMD-10WR3
834/0
83/85
VRB0515YMD-10WR3
667/0
84/86
VRB0524YMD-10WR3
417/0
83/85
--
VRB1205YMD-10WR3
12
(9-18)
20
2000/0
81/83
CE
VRB2405YMD-10WR3
24
(18-36)
40
2000/0
81/83
VRB2412YMD-10WR3
833/0
85/87
VRB2415YMD-10WR3
667/0
86/88
VRB2424YMD-10WR3
416/0
86/88
--
VRB4803YMD-10WR3
48
(36-75)
80
2400/0
77/79
VRB4805YMD-10WR3
2000/0
81/83
VRB4812YMD-10WR3
833/0
85/87
VRB4815YMD-10WR3
667/0
85/87
VRB4824YMD-10WR3
416/0
86/88
Notes：
1“A2S” suffix for chassis mounting and “A4S” suffix for DIN-Rail mounting;
2The A2S and A4S Model’s start-up and minimum input voltages are increased by 1VDC due to the input reverse polarity protection circuit;
3Exceeding the maximum input voltage may cause permanent damage;
4Efficiency is measured at nominal input voltage and rated output load; efficiencies for A2S and A4S Models is decreased by 2% due to the input reverse
polarity protection circuit.
DC/DC Converter
VRA_YMD-10WR3 & VRB_YMD-10WR3 Series
2019.02.10-A/4 Page 2 of 7
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Input Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Input Current (full load / no
load)
5VDC nominal input series, nominal input voltage
--
2500/10
2564/30
mA
12VDC nominal input series, nominal input voltage
--
1004/5
1029/12
24VDC nominal input series, nominal input voltage
--
502/5
515/12
48VDC nominal input series,
nominal input voltage
3.3V output
--
208/4
215/8
Others
--
251/4
258/8
Reflected Ripple Current
5VDC / 12VDC nominal input series
--
50
--
24VDC nominal input series
--
40
--
48VDC nominal input series
--
30
--
Surge Voltage (1sec. max.)
5VDC nominal input series
-0.7
--
16
VDC
12VDC nominal input series
-0.7
--
25
24VDC nominal input series
-0.7
--
50
48VDC nominal input series
-0.7
--
100
Start-up Voltage
5VDC nominal input series
--
--
4.5
12VDC nominal input series
--
--
9
24VDC nominal input series
--
--
18
48VDC nominal input series
--
--
36
Under-voltage Protection
5VDC nominal input series
3
3.5
--
VDC
12VDC nominal input series
5.5
6.5
--
24VDC nominal input series
12
15.5
--
48VDC nominal input series
26
30
--
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
--
6
10
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
5VDC nominal
input series
Positive output
--
±1
±2
%
Negative output
--
±1
±3
Others
--
±1
±3
Linear Regulation
Input voltage variation
from low to high at full
load
5VDC nominal
input series
Singe output
--
--
±0.5
Dual output
--
--
±1
Others
--
±0.2
±0.5
Load Regulation①
0%-100% load
5VDC nominal
input series
Singe output
--
--
±1
Dual output
--
--
±1.5
5%-100% load
12VDC/48VDC nominal input series
--
±0.5
±1
0%-100% load
24VDC nominal input series
--
±0.5
±1
Cross Regulation
Input voltage range, 25%-100% load
--
--
±5
Transient Recovery Time
25% load step change,
nominal input voltage
--
300
500
µs
Transient Response Deviation
±5V output, VRB4803YMD-10WR3,
VRB4805YMD-10WR3
--
±5
±8
%
Others
--
±3
±5
Temperature Coefficient
Full load
--
--
±0.03
%/℃
Ripple & Noise②
20MHz bandwidth, 5%-100% load
--
40
100
mV p-p
DC/DC Converter
VRA_YMD-10WR3 & VRB_YMD-10WR3 Series
2019.02.10-A/4 Page 3 of 7
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Over-voltage Protection
Input voltage range
110
--
160
%Vo
Over-current Protection
110
140
190
%Io
Short-circuit Protection
Continuous, self-recovery
Note:
①Load regulation for 0% -100% for 12VDC/48VDC nominal input series parts to 5%;
②Ripple & 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.
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
Insulation Resistance
Input-output resistance at 500VDC
1000
--
--
MΩ
Isolation Capacitance
Input-output capacitance at 100KHz/0.1V
--
1000
--
pF
Operating Temperature
See Fig. 1
-40
--
+85
℃
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, 90 Min. along X, Y and Z
Switching Frequency*
PWM mode
--
350
--
KHz
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
25.40 ×25.40 ×11.70 mm
A2S chassis mounting
76.00 ×31.50 ×21.20 mm
A4S DIN-rail mounting
76.00 ×31.50 ×25.80 mm
Weight
Horizontal package/A2S chassis mounting/A4S DIN-rail
mounting
15.0g/35.0g/55.0g (Typ.)
Cooling Method
Free air convection
Electromagnetic Compatibility (EMC)
Emissi
ons
CE
5VDC nominal input
CISPR32/EN55032 CLASS B (see Fig.5-②for recommended circuit)
12VDC nominal input
CISPR32/EN55032 CLASS A (without extra components.)/ CLASS B (see Fig.4-②for
recommended circuit)
24VDC nominal input
CISPR32/EN55032 CLASS A (without extra components.)/ CLASS B (see Fig.3-②for
recommended circuit)
48VDC nominal input
CISPR32/EN55032 CLASS B (see Fig.3-②for recommended circuit)
RE
5VDC nominal input
CISPR32/EN55032 CLASS B (see Fig.5-②for recommended circuit)
12VDC nominal input
CISPR32/EN55032 CLASS A(without extra components.)/CLASS B(see Fig.4-②for
recommended circuit)
24VDC nominal input
CISPR32/EN55032 CLASS A(without extra components.)/CLASS B(see Fig.3-②for
recommended circuit)
48VDC nominal input
CISPR32/EN55032 CLASS B (see Fig.3-②for recommended circuit)
Immu
nity
ESD
5VDC nominal input
IEC/EN61000-4-2 Contact ±6KV
perf. Criteria B
Others
IEC/EN61000-4-2 Contact ±4KV
perf. Criteria B
RS
IEC/EN61000-4-3 10V/m
perf. Criteria A
EFT
Others
IEC/EN61000-4-4 ±2KV (see Fig.3-①for recommended circuit)
perf. Criteria B
5VDC nominal input
IEC/EN61000-4-4 ±2KV (see Fig.5-①for recommended circuit)
perf. Criteria B
12VDC nominal input
IEC/EN61000-4-4 ±2KV (see Fig.4-①for recommended circuit)
perf. Criteria B
Surge
Others
IEC/EN61000-4-5 line to line ±2KV (see Fig.3-①for recommended circuit)
perf. Criteria B
5VDC nominal input
IEC/EN61000-4-5 line to line ±2KV (see Fig.5-①for recommended circuit)
perf. Criteria B
DC/DC Converter
VRA_YMD-10WR3 & VRB_YMD-10WR3 Series
2019.02.10-A/4 Page 4 of 7
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12VDC nominal input
IEC/EN61000-4-5 line to line ±2KV (see Fig.4-①for recommended circuit)
perf. Criteria B
CS
IEC/EN61000-4-6 3 Vr.m.s
perf. Criteria A
Typical Characteristic Curves
5VDC input series
Others
Fig. 1
DC/DC Converter
VRA_YMD-10WR3 & VRB_YMD-10WR3 Series
2019.02.10-A/4 Page 5 of 7
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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
Vin
GND
+Vo
0V
Cin
Cout
DC DC
-Vo
Cout
Dual
Single
Fig. 2
Vin
5V/12V/24V/48V
Cin
100µF
Cout
10µF
2. EMC compliance circuit
24VDC/48VDC nominal input series
Vin
GND
+Vo
0V
DC/DC LOAD
C3
LCM
②
C0
MOV
FU SE
①
Vin
GND
CY1
CY2
C4
C2
++
C1
Fig. 3
Notes: For EMC tests we use Part ①in Fig. 3 for immunity and part ②
for emissions test. Selecting based on needs.
Parameter description:
Model
Vin:24V
Vin:48V
FUSE
Select fuse value according to actual input
current
MOV
S20K30
S14K60
C0
680µF/50V
680uF/100V
C1
1µF/50V
1uF/100V
C2
330µF/50V
330µF/100V
C3
4.7µF/50V
4.7uF/100V
C4
Refer to the Cout in Fig.2
LCM
4.7mH, recommended to use MORNSUN
FL2D-30-472
CY1/CY2
1nF/2KV
12VDC nominal input series
Fig. 4
Notes: For EMC tests we use Part ①in Fig. 3 for immunity and part ②
for emissions test. Selecting based on needs
Parameter description:
Model
Vin:12V
FUSE
Select fuse value according to actual
input current
MOV
S20K30
C0/C2
330µF/50V
C1
1µF/50V
C3
Refer to the Cout in Fig.2
LDM1
4.7µH
CY1/CY2
1nF/2KV
DC/DC Converter
VRA_YMD-10WR3 & VRB_YMD-10WR3 Series
2019.02.10-A/4 Page 6 of 7
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5VDC nominal input series
Fig. 5
Notes: For EMC tests we use Part ①in Fig. 3 for immunity and part ②
for emissions test.Selecting based on needs
Parameter description:
Model
Vin: 5V
FUSE
Select fuse value according to actual
input current
C0
2200µF/35V
C1/C2
4.7µF/50V
C3
Refer to the Cout in Fig.2
C4
1000µF/35V
LDM1
4.7µH
CY1/CY2
1nF/2KV
3. The products do not support parallel connection of their output
4. For additional information please refer to DC-DC converter application notes on
www.mornsun-power.com
Dimensions and Recommended Layout
DC/DC Converter
VRA_YMD-10WR3 & VRB_YMD-10WR3 Series
2019.02.10-A/4 Page 7 of 7
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A2S Wiring Package Dimensions
A4S Rail Package Dimensions
Note:
1. For additional information on Product Packaging please refer to www.mornsun-power.com. Packaging bag number: 58210003
(DIP),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