DC/DC Converter
URA_YMD-6WR3 & URB_YMD-6WR3 Series
2016.11.11-A/4 Page 1 of 6
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6W, Ultra wide input, isolated & regulated dual/single
output, YMD package, DC-DC converter
CB Patent Protection RoHS
FEATURES
Ultra wide input voltage range (4:1)
High efficiency up to 88%
No-load power consumption as low as 0.12W
Isolation voltage :1.5K VDC
Input under-voltage protection, output short
circuit, over-current, over-voltage protection
Operating temperature range: -40℃to +85℃
Meet CISPR22/EN55022 CLASS A, without external
components
Reverse voltage protection available with
A2S(Chassis mounting) or A4S(35mm DIN-Rail
mounting)
IEC60950, UL60950, EN60950 approval
International standard pin-out
URA_YMD-6WR3 & URB_YMD-6WR3 series are isolated 6W DC-DC products with 4:1 input voltage. They feature efficiency up to 88%,
1500VDC isolation, operating temperature of -40℃to +85℃, input under-voltage protection, output over-voltage, over-current, short circuit
protection and EMI meets CISPR22/EN55022 CLASS A, which make them widely applied in medical care, industrial control, electric power,
instruments and communication fields. And extension package A2S and A4S also enable them with reverse voltage protection.
Selection Guide
Certification
Part No. ①
Input Voltage (VDC)
Output
Efficiency④
(%,Min./Typ.)
@ Full Load
Max. Capacitive
Load⑤(µF)
Nominal②
(Range)
Max. ③
Output Voltage
(VDC)
Output Current (mA)
(Max./Min.)
UL/CE/CB
URA2405YMD-6WR3
24
(9-36)
40
±5
±600/0
81/83
470
URA2412YMD-6WR3
±12
±250/0
85/87
100
URA2415YMD-6WR3
±15
±200/0
86/88
100
URA2424YMD-6WR3
±24
±125/0
86/88
100
URB2403YMD-6WR3
3.3
1500/0
77/79
1800
URB2405YMD-6WR3
5
1200/0
81/83
1000
URB2409YMD-6WR3
9
667/0
83/85
680
URB2412YMD-6WR3
12
500/0
85/87
470
URB2415YMD-6WR3
15
400/0
86/88
220
URB2424YMD-6WR3
24
250/0
86/88
100
URA4805YMD-6WR3
48
(18-75)
80
±5
±600/0
81/83
470
URA4812YMD-6WR3
±12
±250/0
85/87
100
URA4815YMD-6WR3
±15
±200/0
86/88
100
URB4803YMD-6WR3
3.3
1500/0
77/79
1800
URB4805YMD-6WR3
5
1200/0
81/83
1000
URB4812YMD-6WR3
12
500/0
85/87
470
URB4815YMD-6WR3
15
400/0
86/88
220
URB4824YMD-6WR3
24
250/0
86/88
100
Notes：
1Part No. with suffix of “A2S” means chassis mounting and suffix of “A4S” means DIN-Rail mounting (e.g. URB2405YMD-6WR3A2S means chassis mounting;
URB2405YMD-6WR3A4S means DIN-Rail mounting);
2The minimum input voltage and starting voltage of A2S (wiring) and A4S (rail) Model are 1VDC higher than those of DIP package due to input reverse
polarity protection function.
3Absolute maximum rating without damage on the converter, but it isn't recommended;
4Efficiency is measured In nominal input voltage and rated output load;A2S (wiring) and A4S (rail) Model due to input reverse polarity protection, minimum
efficiency greater than Min.-2 is qualified;
5The capacitive loads of positive and negative outputs are identical.
DC/DC Converter
URA_YMD-6WR3 & URB_YMD-6WR3 Series
2016.11.11-A/4 Page 2 of 6
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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
--
261/5
268/12
mA
Others
--
292/5
309/12
48VDC nominal input series,
nominal input voltage
3.3V output
--
130/4
134/8
Others
--
146/4
155/8
Reflected Ripple Current
Nominal input voltage
--
20
--
Surge Voltage (1sec. max.)
24VDC nominal input series
-0.7
--
50
VDC
48VDC nominal input series
-0.7
--
100
Starting Voltage
24VDC nominal input series
--
--
9
48VDC nominal input series
--
--
18
Input Under-voltage Protection
24VDC nominal input series
5.5
6.5
--
48VDC nominal input series
12
15.5
--
Input Filter
Pi filter
Hot Plug
Unavailable
Output Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Output Voltage Accuracy①
0% -100% load
--
±1
±3
%
Line Regulation
Full load, the input voltage is
from low voltage to high voltage
Positive output
--
±0.2
±0.5
Negative output
--
±0.5
±1
Load Regulation②
5% -100% load
Positive output
--
±0.5
±1
Negative output
--
±0.5
±1.5
Cross Regulation
Dual output, main circuit with 50% load,
auxiliary circuit with 10% -100% load
--
--
±5
Transient Recovery Time
25% load step change,
nominal input voltage
--
300
500
µs
Transient Response Deviation
3.3V, 5V, ±5V output
--
±5
±8
%
Others
--
±3
±5
Temperature Coefficient
Full load
--
--
±0.03
%/℃
Ripple & Noise③
20MHz bandwidth, 5% -100% load
--
60
85
mV p-p
Over-voltage Protection
Input voltage range
110
--
160
%Vo
Over-current Protection
110
140
190
%Io
Short circuit Protection
Continuous, self-recovery
Note: ①At 0% - 5% load, the Max. output voltage accuracy of ±5VDC/±9VDC output converter is ±5%;
②When testing from 0% -100%load working conditions，load regulation index of ±5%;
③0% - 5% load ripple&Noise is no more than 5%Vo.Ripple and noise are measured by “parallel cable” method, please see DC-DC Converter Application
Notes for specific operation.
General Specification
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Insulation Voltage
Input-output, with the test time of 1 minute and the
leak current lower than 1mA
1500
--
--
VDC
Insulation Resistance
Input-output, insulation voltage 500VDC
1000
--
--
MΩ
Isolation Capacitance
Input-output, 100KHz/0.1V
--
1000
--
pF
Operating Temperature
see Fig. 1
-40
--
+85
℃
Storage Humidity
Without condensation
5
--
95
%RH
Storage Temperature
-55
--
+125
℃
Pin Welding Resistance
Temperature
Welding spot is 1.5mm away from the casing, 10
seconds
--
--
+300
Vibration
10-55Hz, 10G, 30 Min. along X, Y and Z
Switching Frequency *
PWM mode
--
300
--
KHz
DC/DC Converter
URA_YMD-6WR3 & URB_YMD-6WR3 Series
2016.11.11-A/4 Page 3 of 6
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MTBF
MIL-HDBK-217F@25℃
1000
--
--
K hours
Note:* This series of products using reduced frequency technology, the switching frequency is test value of full load,When the load is reduced to below 50%, the
switching frequency decreases with decreasing load.
Physical Specifications
Casing Material
Aluminum alloy
Dimension
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 wiring package/A4S rail package
14g /36g /56g(Typ.)
Cooling method
Free air convection
EMC Specifications
EMI
CE
CISPR22/EN55022
CLASS A (without external components)/
CLASS B (see Fig.3-②for recommended circuit)
RE
CISPR22/EN55022
CLASS A (without external components)/
CLASS B (see Fig.3-②for recommended circuit)
EMS
ESD
IEC/EN61000-4-2 Contact ±4KV
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 B
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
Voltage dips, short interruptions
and voltage variations immunity
IEC/EN61000-4-29 0%, 70%
perf. Criteria B
Product Characteristic Curve
Operating Temperat ure( )
℃
Temperature Derating Curve
Output Power Percentage(%)
-40 0 40 71 85 120
80
60
100
120
40
20
0
Safe Operating Area
Fig. 1
DC/DC Converter
URA_YMD-6WR3 & URB_YMD-6WR3 Series
2016.11.11-A/4 Page 4 of 6
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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.
DC DC
Vin
GND
+Vo
0V
Cin
Cout
Vin
GND
+Vo
0V
Cin
Cout
DC DC
-Vo
Cout
Dual
Single
Fig. 2
Vin(VDC)
Cin(uF)
Cout(uF)
24
100
10
48
10 - 47
10
2. EMC solution-recommended circuit
Vin
GND
+Vo
0V
(-Vo)
DC/DC LOAD
C3
LCM
②
C0
MOV
FU SE
①
Vin
GND
CY1
CY2
C4
C2
++
C1
Fig. 3
Notes: Part ①in the Fig. 3 is used for EMS test and part ②for EMI filtering;
selected based on needs.
Parameter description:
Model
Vin:24V
Vin:48V
FUSE
Choose according to actual input current
MOV
S20K30
S14K60
C0
680µF/50V
680µF/100V
C1
1µF/50V
1µF/100V
C2
330µF/50V
330µF/100V
C3
4.7µF/50V
4.7µF/100V
C4
Refer to the Cout in Fig.2
LCM
4.7mH
CY1、CY2
1nF/2KV
3. It is not allowed to connect modules output in parallel to enlarge the power
4. For more information please find DC-DC converter application notes on www.mornsun-power.com
DC/DC Converter
URA_YMD-6WR3 & URB_YMD-6WR3 Series
2016.11.11-A/4 Page 5 of 6
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Dimensions and Recommended Layout
URA_YMD-6WR3A2S & URB_YMD-6WR3A2S Dimensions
DC/DC Converter
URA_YMD-6WR3 & URB_YMD-6WR3 Series
2016.11.11-A/4 Page 6 of 6
MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
URA_YMD-6WR3A4S & URB_YMD-6WR3A4S Dimensions
Note:
1. Packing information please refer to Product Packing Information which can be downloaded from www.mornsun-power.com.Packing
bag number : 58210003(DIP),58220022(A2S/A4S package);
2. The recommended unbalance degree of the dual output module load is ≤±5%; if the degree exceeds ±5%, than the product
performance cannot be guaranteed to comply with all parameters in the datasheet. Please contact our technicians directly for
specific information;
3. The maximum capacitive load offered were tested at input voltage range and full load;
4. 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;
5. All index testing methods in this datasheet are based on Company’s corporate standards;
6. We can provide product customization service, please contact our technicians directly for specific information;
7. Specifications are subject to change 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
