URA_LD-15W & URA_LD-20W SERIES
15/20W, 4:1ULTRA WIDE INPUT ISOLATED &
REGULATEDDUAL OUTPUT DC-DC CONVERTER
Patent Protection RoHS
FEATURES
●
Efficiency up to 88%
●
Ultra wide input range (4:1)
●
High and low temperature characteristics
●
Output short circuit protection
●1500VDC
isolation
●
Operating temperature range:
-40℃~+85℃
●
Six-sided metal shield
●
Industry standard pinout
●
MTBF>1,000,000 hours
●
Industrial level specifications
●
EMC application
APPLICATIONS
PART NUMBER SYSTEM
URA2405LD-20W
Rated Power
Package
Output Voltage
Input Voltage
Product Series
URA_LD-15W & URA_LD-20W series offer 15W &
20W of output, ultra wide input voltage: 9-36VDC,
18-75VDC, dual output, and features 1500VDC isolation,
under voltage lockout, over current, over voltage and short
circuit protection. All models are particularly suitable for
industrial, telecommunication, electric power, test
equipments applications.
Input Current
(mA)(typ.)
@Max.
@No Load
Load
719
700
715
953
933
932
364
350
352
481
470
480
7
17
29
7
11
29
6
11
15
7
8
8
200
30
Reflected
Ripple
Current
(mA,typ.)
SELECTION GUIDE
Model
URA2405LD-15W
URA2412LD-15W
URA2415LD-15W
URA2405LD-20W
URA2412LD-20W
URA2415LD-20W
URA4805LD-15W
URA4812LD-15W
URA4815LD-15W
URA4805LD-20W
URA4812LD-20W
URA4815LD-20W
48
(18-75)
80
24
(9-36)
40
Input Voltage(VDC) Output
Voltage
Nominal
(VDC)
Max*
(Range)
±5
±12
±15
±5
±12
±15
±5
±12
±15
±5
±12
±15
Output Current (mA)
Max.
±1500
±625
±500
±2000
±833
±667
±1500
±625
±500
±2000
±833
±667
Min.
±150
±62.5
±50
±200
±83.3
±66.7
±150
±62.5
±50
±200
±83.3
±66.7
Max.
Capacitive
#
Load (µF)
4800
800
500
4800
800
500
4800
800
500
4800
800
500
Efficiency
(%, typ.)
@Max. Load
86
87
87
84
87
87
84
87
87
85
87
88
Note:1.*Input voltage can’t exceed this value, or will cause the permanent damage.
#
2. For each output.
INPUT SPECIFICATIONS
Item
Input Surge Voltage (1000 ms)
Test Conditions
24VDC Input Models
48VDC Input Models
Start-up Voltage
24VDC Input Models
48VDC Input Models
Under Voltage Shutdown
Start-up Time
*
Min.
-0.7
-0.7
--
--
--
--
--
Typ.
--
--
8.7
17.6
--
--
10
Max.
50
100
9
18
9
18
--
Unit
VDC
24VDC Input Models
48VDC Input Models
Nominal input& constant resistance load
Models ON
ms
3.5 -12VDC or open circuit
0-1.2VDC
--
--
1
2013.06.13-B/1
Ctrl
Models OFF
Input current (Models OFF)
mA
Page 1 of 6
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MORNSUN
URA_LD-15W&URA_LD-20W
Short Circuit Input Power
Input Filter
Note: *The Ctrl pin voltage is referenced to GND.
--
--
Pi Filter
3.5
W
OUTPUT SPECIFICATIONS
Item
Output Power
Voltage Accuracy
Output Voltage Balance
Line Regulation
Load Regulation
Cross Regulation
Transient Recovery Time
Transient Response Deviation
Temperature Drift
Ripple*
Noise*
Trim
Over Current Protection
Full input voltage
±5V
output
Over Voltage Protection
±12V
output
±15V
output
Short Circuit Protection
Test Conditions
URA_LD-15W series
URA_LD-20W series
Refer to recommended circuit
Dual Output, Balanced Loads
Full load, Input voltage from low to high
10% to 100% load
Main output 50%
Supplement output from 25% to 100% load
25%~ 50%~25% load or
50%~75%~50% load step change
100% full load
20MHz Bandwidth
Min.
1.5
2
--
--
--
--
--
--
--
--
--
--
--
120
--
--
--
Typ.
--
--
±1
±0.5
±0.2
±0.5
--
200
±3
±0.02
40
75
±10%
140
±6.1
±15
±18
Max.
15
20
±3
--
±0.5
±1
±5
500
±5
--
50
100
--
150
--
--
--
VDC
VDC
%
µs
%
%/°C
mVp-p
%
Unit
W
Hiccup, Continuous, automatic recovery
Note: Dual output models unbalanced load:
±5%.
*Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at
DC-DC Application Notes
.
COMMON SPECIFICATIONS
Item
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Switching Frequency
MTBF
Case Material
Weight
Without heatsink
With heatsink
--
--
Test Conditions
Tested for 1 minute and leakage current less than 1 mA
Test at 500VDC
Input/Output,100KHz/0.1V
Full load, nominal input
MIL-HDBK-217F@25℃
Min.
1500
1000
--
--
1000
Typ.
--
--
2000
400
--
Aluminum Alloy
28
36
--
--
g
Max.
--
--
--
--
--
Unit
VDC
MΩ
pF
KHz
K hours
ENVIRONMENTAL SPECIFICATIONS
Item
Storage Humidity
Operating Temperature
Storage Temperature
The Max. Case Temperature
Lead Temperature
Cooling
Operating Temperature curve range
1.5mm from case for 10 seconds
Test Conditions
Non condensing
See Temperature Derating Curve
Min.
5
-40
-55
--
--
Typ.
--
--
--
--
--
Max.
95
85
125
105
300
°C
Unit
%
Free air convection
EMC SPECIFICATIONS
EMI
CE
RE
ESD
EMS
EFT
Surge
CISPR22/EN55022
CISPR22/EN55022
CLASS B (External Circuit Refer to Figure1-②)
CLASS B (External Circuit Refer to Figure1-②)
perf. Criteria B
perf. Criteria B (External Circuit Refer to Figure1-①)
perf. Criteria B (External Circuit Refer to Figure1-①)
URA_LD-15W&URA_LD-20W
2013.06.13-B/1
Page 2 of 6
IEC/EN61000-4-2 Contact
±4KV
IEC/EN61000-4-4
IEC/EN61000-4-5
±2KV
±2KV
The copyright and authority for the interpretation of the products are reserved by
MORNSUN
EMC RECOMMENDED CIRCUIT
FUSE
Vi n
L DM
L CM
C3
Vi n
+Vo
MO V
GND
TVS
C1
C0
C2
EUT
G ND
-Vo
(0 V)
L O AD
①
②
(Figure1)
C4
URA_LD-15W
recommended
external
circuit parameters:
Model
FUSE
MOV
EMS
LDM
TVS
C0
C1
LCM
EMI
C2
C3
C4
URA_LD-20W
recommended
external
circuit parameters:
Model
FUSE
MOV
EMS
LDM
TVS
C0
EMI
C1
C2
S10K35
56μH
SMCJ48A
120μF/50V
4.7μF/50V
--
URA24_LD-20W
Choose according to load
S10K60
56μH
SMCJ90A
120μF/100V
4.7μF/100V
4.7μF/100V
URA48_LD-20W
S10K35
56μH
SMCJ48A
120μF/50V
4.7μF/50V
1250μH
4.7μF/50V
1000pF/2KV
1000pF/2KV
URA24_LD-15W
Choose according to load
S10K60
56μH
SMCJ90A
120μF/100V
1μF/100V
1250μH
1μF/100V
1000pF/2KV
1000pF/2KV
URA48_LD-15W
This common choke LCM has been defined as follow
(Can be assembled by hand):
u
Core:P5T,14*8*7,Base(Optical)
L:1250µH
±25%,DCR:250mΩ(max.)
u
Wire: diameter 0.4mm
Ø
A Height:11.2mm(max.)
Ø
B Terminal Length: 4.0mm(max.)
Ø
C Terminal Pitch: 7.5mm(max.)
Ø
D Terminal Pitch: 7.5mm(max.)
u
Test condition: 100KHz/100mV
u
Recommended through hole:
Ø0.9mm
u
All dimensions in millimeters
Note: 1. In Figure 1,part① is EMS recommended external circuit, part② is EMI recommended external circuit. Choose according to requirements.
2. If there is no recommended parameters, the model no require the external component.
EMC RECOMMENDED CIRCUIT PCB LAYOUT
The copyright and authority for the interpretation of the products are reserved by
MORNSUN
URA_LD-15W&URA_LD-20W
2013.06.13-B/1
Page 3 of 6
(Figure 2)
EMI TEST WAVEFORM (CLASS B APPLY CIRCUIT)
URA2415LD-20W
URA4815LD-20W
PRODUCT TYPICAL CURVE
(Output voltage≤5V)
Output Power Percent (%)
(Output voltage>5V)
Output Power Percent (%)
120
100
80
60
40
20
0
-40
0
40
65 75 85
120
Operating Tem p( C )
Safe Operating Area
120
100
80
60
40
20
0
-40
0
40 5565 85
120
Operating Temp(°C)
Safe Operating A rea
With heatsink
With heatsink
Without heatsink
Without heatsink
Efficiency VS Input Voltage curve
(Full Load)
URA2405LD-15W
90
88
86
100
90
80
70
60
50
40
30
20
10
0
9
12
15
18
21
24
27
30
33
36
10
Efficiency VS Output Load curve
(Vin=Vin-nominal)
URA2405LD-15W
Efficiency(%)
84
82
80
78
76
74
72
70
Efficiency(%)
20
30
40
50
60
70
80
90
100
Input Voltage(V)
Output Current Percent(% )
Efficiency VS Input Voltage curve
URA4805LD-15W
(Full Load)
90
88
86
100
90
80
Efficiency VS Output Load curve
(Vin=Vin-nominal)
URA4805LD-15W
Efficiency(%)
Efficiency(%)
18
25
32
39
46
51
58
65
72
75
84
82
80
78
76
74
72
70
70
60
50
40
30
20
10
0
10
20
30
40
50
60
70
80
90
100
Input Voltage(V)
Output Current Percent(%)
The copyright and authority for the interpretation of the products are reserved by
MORNSUN
URA_LD-15W&URA_LD-20W
2013.06.13-B/1
Page 4 of 6
Efficiency VS Output Load curve
(Full Load)
URA2405LD-20W
90
88
86
Efficiency VS Output Load curve
(Vin=Vin-nominal)
URA2405LD-20W
88
86
84
Efficiency(%)
Efficiency(%)
9
12
15
18
21
24
27
30
33
36
84
82
80
78
76
74
72
70
82
80
78
76
74
72
70
68
10
20
30
40
50
60
70
80
90
100
Input Voltage(V)
Efficiency VS Input Voltage curve
(Full Load)
90
88
86
84
82
80
78
76
74
72
70
18
25
32
39
46
51
58
65
72
75
Output Current Percent(%)
Efficiency VS Output Load curve
(Vin=Vin-nominal)
URA4805LD-20W
100
90
80
70
60
50
40
30
20
10
0
10
20
30
40
50
60
70
80
90
100
URA4805LD-20W
Efficiency(%)
Input Voltage(V)
Efficiency(%)
Output Current Percent(%)
OUTLINE DIMENSIONS, RECOMMENDED FOOTPRINT & PACKAGING
The copyright and authority for the interpretation of the products are reserved by
MORNSUN
URA_LD-15W&URA_LD-20W
2013.06.13-B/1
Page 5 of 6
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