VRA_D-10W & VRB_D-10W Series
10W, 2:1 WIDE INPUT ISOLATED & REGULATED
DUAL/SINGLE OUTPUT DC-DC CONVERTER
Patent Protection
RoHS
FEATURES
●Efficiency
up to 86%
●Wide
input range(2:1)
●Operating
temperature: -40°C to +85°C
●1.5KVDC
isolation
●Metal
shielding package
●Industry
standard pinout
●MTBF>1,000,000
hours
●Good
high temperature properties, can
meet the industrial products technical
requirements
APPLICATIONS
PART NUMBER SYSTEM
VRA2405D-10W
Rated Power
Package Style
Output Voltage
Input Voltage
Product Series
The VRA_D-10W & VRB_D-10W Series are specially
designed for applications where a wide range input voltage
power supplies are isolated from the input power supply in a
distributed power supply system on a circuit board.
These products apply to:
1) Where the voltage of the input power supply is wide range
(voltage range≤2:1);
2) Where isolation is necessary between input and
output(Isolation Voltage
≤
1500VDC);
3) Where the regulation of the output voltage and the output
ripple noise are demanded.
Output Current (mA)
Max.
±1000
±420
±330
±210
2000
830
667
420
±1000
±420
±330
±210
2000
1111
830
667
420
±1000
±420
±330
±210
2000
830
667
420
Min.
±100
±42
±33
±21
200
83
66
42
±100
±42
±33
±21
200
111
83
66
42
±100
±42
±33
±21
200
83
66
42
Input Current (mA)(typ.)
@Max.
Load
985
948
937
950
968
939
970
926
494
473
492
496
505
487
470
451
471
243
229
236
231
247
231
237
231
5
100
15
150
30
50
@No Load
Reflected
Ripple
Current
(mA,typ.)
Efficiency
(%, typ.)
@Max.
Load
82
83
84
84
80
82
82
83
83
85
84
85
83
83
85
84
85
83
86
86
86
83
86
86
86
SELECTION GUIDE
Input Voltage(VDC)
Model Number
VRA1205D-10W
VRA1212D-10W
VRA1215D-10W
VRA1224D-10W
VRB1205D-10W
VRB1212D-10W
VRB1215D-10W
VRB1224D-10W
VRA2405D-10W
VRA2412D-10W
VRA2415D-10W
VRA2424D-10W
VRB2405D-10W
VRB2409D-10W
VRB2412D-10W
VRB2415D-10W
VRB2424D-10W
VRA4805D-10W
VRA4812D-10W
VRA4815D-10W
VRA4824D-10W
VRB4805D-10W
VRB4812D-10W
VRB4815D-10W
VRB4824D-10W
48
(36-75)
80
24
(18-36)
40
12
(9-18)
20
Nominal
(Range)
Max*
Output
Voltage
(VDC)
±5
±12
±15
±24
5
12
15
24
±5
±12
±15
±24
5
9
12
15
24
±5
±12
±15
±24
5
12
15
24
Max.
Capacitive
#
Load (µF)
100
47
47
22
100
100
100
47
100
47
47
22
100
100
100
100
47
100
47
47
22
100
100
100
47
Note: 1.*Input voltage can’t exceed this value, or will cause the permanent damage.
2. Models listed with strike-through text have been officially discontinued.
#
3. For each output.
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VRA_LD-15W&VRB_LD-15W
B/2-2012
Page 1 of 5
INPUT SPECIFICATIONS
Item
Test Conditions
12VDC Input Models
Input Surge Voltage (1000 ms)
24VDC Input Models
48VDC Input Models
12VDC Input Models
Start-up Voltage
24VDC Input Models
48VDC Input Models
12VDC Input Models
Under Voltage Shutdown
24VDC Input Models
48VDC Input Models
Start-up Time
Short Circuit Input Power
No-load power consumption
Input Filter
Nominal input& constant resistance load
Min.
-0.7
-0.7
-0.7
--
--
--
--
--
--
--
--
--
Typ.
--
--
--
--
--
--
--
--
--
10
--
500
L Filter
Max.
25
50
100
9
18
36
9
18
36
--
3.5
--
ms
W
mW
VDC
Unit
OUTPUT SPECIFICATIONS
Item
Output Power
Positive voltage accuracy
Negative voltage accuracy
Output Voltage Balance
Line Regulation
Load Regulation
Cross Regulation
Transient Recovery Time
Transient Response Deviation
Temperature Drift
Ripple *
Noise *
Over Current Protection
Short Circuit Protection
Full input voltage
Dual Output, Balanced Loads
For Vin change of
±1%
10% to 100% load
Dual output
25%~50%~25% rated load or
50%~75%~50% rated load range
100% full load
20MHz Bandwidth
Refer to recommended circuit
Test Conditions
Min.
1
--
--
--
--
--
--
--
--
--
--
--
120
Typ.
--
±1
±3
±0.5
±0.2
±0.5
--
200
±3
--
30
100
--
Max.
10
±3
±5
±1
±0.5
±1
±5
500
±5
±0.03
50
300
--
%
µs
%
%/°C
mVp-p
%
Unit
W
Continuous, automatic recovery
Note: Dual output models unbalanced load:
±5%.
*Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at Testing of Power Converter section, application notes.
COMMON SPECIFICATIONS
Item
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Switching Frequency
MTBF
Case Material
Weight
--
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.
--
--
1000
300
--
Max.
--
--
--
--
--
Unit
VDC
MΩ
pF
KHz
K hours
Aluminium alloy
23.5
--
g
ENVIRONMENTAL SPECIFICATIONS
Item
Storage Humidity
Operating Temperature
Storage Temperature
Temp. rise allowed at full load
Lead Temperature
Cooling
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Test Conditions
Min.
--
Typ.
--
--
--
75
--
Max.
95
85
125
--
300
Unit
%
Power derating (above 71
℃
)
-40
-55
°C
Operating Temperature curve range
1.5mm from case for 10 seconds
--
--
Free air convection
VRA_LD-15W&VRB_LD-15W
B/2-2012
Page 2 of 5
EMC SPECIFICATIONS
EMI
CE
ESD
EMS
EFT
Surge
CISPR22/EN55022
CLASSB（External Circuit Refer to Figure1-②）
±4KV
perf. Criteria B
perf. Criteria B
（External
Circuit Refer to Figure1-①）
perf. Criteria B
（External
Circuit Refer to Figure1-①）
IEC/EN61000-4-2 Contact
IEC/EN61000-4-4
±2KV
IEC/EN61000-4-5
±2KV
EMC RECOMMENDED CIRCUIT
FUSE
V in
+
MO V
G ND
TVS
C0
C1
C2
LD M1
L DM2
C3
Vi n
+Vo
E UT
G ND
-Vo
(0 V)
L O AD
①
(Figure1)
②
C4
VRA_D-10W
Recommended external circuit parameters
：
Model
FUSE
MOV
EMS
LDM1
TVS
C0
C1
LDM2
EMI
C2
C3
C4
Model
FUSE
MOV
EMS
LDM1
TVS
C0
C1
EMI
LDM2
--
--
SMCJ28A
680μF/25V
1μF/50V
12μH
--
--
SMCJ28A
680μF/25V
1μF/50V
12μH
4.7μF/50V
--
--
Vin: 12V
Vin: 12V
Vin: 24V
Choose according to practical input current
10D560K
56μH
SMCJ48A
120μF/50V
1μF/50V
12μH
4.7μF/50V
--
--
Vin: 24V
Choose according to practical input current
10D560K
56μH
SMCJ48A
120μF/50V
1μF/50V
12μH
10D101K
56μH
SMCJ90A
120μF/100V
1μF/100V
12μH
10D101K
56μH
SMCJ90A
120μF/100V
1μF/100V
12μH
4.7μF/100V
100pF/2KV
100pF/2KV
Vin: 48V
Vin: 48V
VRB_D-10W
Recommended external circuit param eters
：
C2
4.7μF/50V
4.7μF/50V
4.7μF/100V
Note: 1. In Figure 1,part
①
is EMS Recommended external circuit, part
②
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
DUAL
SINGLE
(Figure 2)
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VRA_LD-15W&VRB_LD-15W
B/2-2012
Page 3 of 5
PRODUCT TYPICAL CURVE
Operating Temp.(
C
)
Efficiency VS Input Voltage
VRA2405D-10W
(Full Load)
90
86
82
78
74
70
66
62
58
54
50
18
20
22
24 26 28 30 32
Input Voltage(V)
34
36
90
86
82
78
74
70
66
62
58
54
50
Efficiency VS Input Voltage
VRA4805D-10W
(Full Load)
VRB4805D-10W
Efficiency(%)
Efficiency(%)
36 40 44 48 52 56 60 64 70 75
Input Voltage(V)
Efficiency VS Output Load curve
VRA2405D-10W
(Vin=Vin-nominal)
90
86
82
78
74
70
66
62
58
54
50
10 20
30 40
50 60
70 80 90 100
Output Current Percent(%)
Efficiency VS Output Load curve
VRA4805D-10W
(Vin=Vin-nominal)
VRB4805D-10W
90
86
82
78
74
70
66
62
58
54
50
10 20 30 40 50 60 70 80 90 100
Output Current Percent(%)
Efficiency(%)
OUTLINE DIMENSIONS, RECOMMENDED FOOTPRINT & PACKAGING
MECHANICAL DIMENSIONS
4.10[0.161]
RECOMMENDED FOOTPRINT
DUAL
1
2
5
4
3
∅0.80[0.031]
11.20
[0.441]
( Fron t View )
20.32
[0.800]
Efficiency(%)
SINGLE
5
1
∅1.30[0.051]
50.80 [2.000]
3
20.32[0.800]
25.40[1.000]
2
(B ottom View)
4
1
5.08[0.200]
5
2
3
Note: grid2.54*2.54mm.
TUBE OUTLINE DIMENSIONS
54.30[2.138]
FOOTPRINT DETAILS
Single
Pin
Dual
1
GND
GND
2
Vin
Vin
+Vo
3
+Vo
No Pin
4
0V
5
-Vo
0V
15.00
[0.591]
13.20
[0.520]
Note:
Unit:mm[inch]
Pin diameter tolerances:±0.10mm[±0.004inch]
General tolerances:±0.50mm[±0.020inch]
Note:
Unit
:
mm[inch]
General toletrances
:
±0.50mm[±0.020inch]
L=220mm[8.661inch] pcs
/
tube: 7pcs
Inner packaging dimensions
：
255*170*80mm
Outer packaging dimensions(with six inner packaging boxes):
375*280*270mm
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VRA_LD-15W&VRB_LD-15W
B/2-2012
20.00
[0.787]
Page 4 of 5
TEST CONFIGURATIONS
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with a inductor Lin and Cin to simulate source impedance.
Oscilloscope
Lin
Cin
Current
Probe
DC DC
Load
Lin(4.7µH)
Cin(220µF, ESR < 1.0Ω at 100 KHz)
DESIGN & APPLY CONSIDERATIONS
1) Requirement on output load
To ensure this module can operate efficiently and reliably, During operation, the minimum output load
could not be less than 10% of the full
load.
If the actual output power is very small, please connect a resistor with proper resistance at the output end in parallel to increase the load, or use
our company’s products with a lower rated output power.
2) Recommended circuit
All the VRA_D-10W&VRB_D-10W Series have been tested according to the following recommended testing circuit before leaving factory. This
series should be tested under load. Never be tested under no load (see Figure 3).
If you want to further decrease the output ripple, you can increase capacitance properly or choose capacitors with low ESR. However, the
capacitance can’t exceed the maximum capacitor load in the list (Table 1).
Dual Output
Vin
Cin
+Vo
Co ut
DC
DC
Cout
0V
-Vo
+Vo
GND
Single Output
Vin
Cin
DC
DC
Cout
GND
0V
(Figure 3)
EXTERNAL CAPACITOR TABLE (TABLE 1)
Capacitance
#
Output
Cout (µF)
Cin(µF)
Voltage
220
5V
Single
100
12V,15V
24V
47
100
±5V
100
Dual
±12V,±15V
47
±24V
22
#
Note: For each output.
3)
Input Current
When it is used in unregulated power supply, be sure that the fluctuating range of the power supply and the rippled voltage do not exceed the
module standard. Input current of power supply should afford the startup current of this kind of DC/DC module. (Figure 4).
Input Current(A)
Ip
Input Voltage
Range
Input Voltage (V)
(Figure 4)
4)
External Capacitor
To ensure this module operate efficiently and reliably, It’s recommend to connect external capacitor in the application field.(see table 1)
5) No parallel connection or plug and play
Note:
1. The load shouldn't be less than 10%, otherwise ripple will increase dramatically. Operation under minimum load will not damage the converter;
However, they may not meet all specification listed, and that will reduce the life of product.
2. Max. Capacitive Load tested at nominal input voltage, full load and constant resistive load.
3. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified.
4. In this datasheet, all the test methods of indications are based on corporate standards.
5. Only typical models listed, other models may be different, please contact our technical person for more details.
6. Our company offer custom products.
7. Specifications subject to change without notice.
MORNSUN 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
Fax:86-20-38601272
Http://www.mornsun-power.com
The copyright and authority for the interpretation of the products are reserved by MORNSUN
VRA_LD-15W&VRB_LD-15W
B/2-2012
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