VRA_LD-15WR2 &
VRB_LD-15WR2 SERIES
15W,WIDE INPUT, ISOLATED & REGULATED
DUAL/SINGLE OUTPUT DIP PACKAGING,
DC-DC CONVERTER
FEATURES
●
Efficiency up to 90%
●
2:1 wide input voltage range
●
Output over current, over voltage and Input under
voltage protection, Short circuit protection
●
1.5KVDC isolation
●
Operating temperature range:
-40°C ~ +85°C
●
Six-sided metal shield
●
Industry standard pinout
●
Meet CISPR22/EN55022 CLASS A
●
Meet EN60950
●
A2S(chassis mounting)andA4S(DIN-Rail
mounting)have the function of input reverse
connection preventing
Patent Protectied
RoHS
PART NUMBER SYSTEM
VRA1205LD-15WR2
Rat ed Po wer
Pack ag e Style
Ou tp ut Voltag e
In pu t Volt ag e
Pro du ct Ser ie s
APPLICATION
VRA_LD-15WR2 & VRB_LD-15WR2 series are applied to wide
voltage range input situation such as data transmission device,
battery power supply device, telecommunication device, distributed
power supply system, remote control system, industrial robot
system etc.
SELECTION GUIDE
Approval
①
Model
②
VRA1205LD-15WR2
VRA1212LD-15WR2
VRA1215LD-15WR2
VRA1224LD-15WR2
VRB1203LD-15WR2
VRB1205LD-15WR2
VRB1212LD-15WR2
VRB1215LD-15WR2
CE
VRB1224LD-15WR2
VRA2405LD-15WR2
VRA2412LD-15WR2
VRA2415LD-15WR2
VRA2424LD-15WR2
VRB2403LD-15WR2
VRB2405LD-15WR2
VRB2412LD-15WR2
VRB2415LD-15WR2
VRB2424LD-15WR2
24
(18-36)
40
12
(9-18)
20
Input
Output Output Current (mA)
Voltage(VDC)
Voltage
Nominal
Max.
③
(VDC)
Max.
Min.
(Range)
±5
±1500
±75
±12
±15
±24
3.3
5
12
15
24
±5
±12
±15
±24
3.3
5
12
15
24
±625
±500
±313
4000
3000
1250
1000
625
±1500
±625
±500
±313
4000
3000
1250
1000
625
±32
±25
±16
200
150
63
50
32
±75
±32
±25
±16
200
150
63
50
32
Input Current
(mA)(typ.)
@Max.
@No
Load
Load
1453
30
1420
1420
1420
1465
1405
1405
1405
1389
727
710
710
710
625
695
703
695
695
25
25
20
65
60
25
25
30
25
20
20
20
35
35
20
20
25
30
Reflected
Efficiency
⑤
Max.
Ripple
(%, typ.)
Capacitive
Current
@Max
Load
④
(µF)
(mA,typ.)
Load
1020
495
165
200
10500
4020
1035
705
250
1020
495
165
200
10500
4020
1035
705
250
2013.11.29-A/4
86
88
88
88
87
89
89
89
90
86
88
88
88
88
90
89
90
90
Page 1of 9
The copyright and authority for the interpretation of the products are reserved by
MORNSUN
VRA_LD-15WR2 & VRB_LD-15WR2
VRA4805LD-15WR2
VRA4812LD-15WR2
VRA4815LD-15WR2
VRA4824LD-15WR2
CE
VRB4803LD-15WR2
VRB4805LD-15WR2
VRB4812LD-15WR2
VRB4815LD-15WR2
VRB4824LD-15WR2
48
(36-75)
80
±5
±12
±15
±24
3.3
5
12
15
24
±1500
±625
±500
±313
4000
3000
1250
1000
625
±75
±32
±25
±16
200
150
63
50
32
363
355
355
355
316
360
352
348
352
20
15
15
15
35
35
25
15
15
30
1020
495
165
200
10500
4020
1035
705
250
86
88
88
88
87
87
89
90
89
Note:
①Series
with suffix
“H”
are heat sink mounting; series with suffix
“A2S”
are chassis mounting，
with suffix
“A4S”
are DIN-Rail mounting, for example VRB2405LD-
15WHR2A2S is chassis mounting of with heat sink,VRB2405LD-15WR2A4S is DIN-Rail mounting of without heat sink;If the application has a higher
requirement for heat dissipation, you can choose modules with heat sink;
②Absolute
maximum rating without damage on the converter;
③For
dual-output-converters the given value is for one output (for both outputs the same value);
④The
efficiency of "A2S" and "A4S" is approx. 2% lower for the protection of inverse polarity.
INPUT SPECIFICATIONS
Item
Input Surge Voltage (1sec.max.)
Test Conditions
12VDC input
24VDC input
48VDC input
12VDC input
Start-up Voltage
24VDC input
48VDC input
12VDC input
Under Voltage Shutdown
Start-up Time
Ctrl
*
Input Filter
Note: *The
Ctrl
control pin voltage is refer to GND.
Min.
-0.7
-0.7
-0.7
--
--
--
7.5
16
32
--
Typ.
--
--
--
--
--
--
--
--
--
10
Max.
25
50
100
9
17.8
35.8
--
--
--
--
Unit
VDC
24VDC input
48VDC input
Nominal input& constant resistance load
Models ON
Models OFF
Input current (Models OFF)
ms
Ctrl open or connect TTL high level (2.5-12VDC)
Ctrl connect GND or low level (0-1.2VDC)
--
1
Pi Filter
--
mA
OUTPUT SPECIFICATIONS
Item
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*
Trim
3.3VDC output
5VDC output
Output Over Voltage Protection
12VDC output
15VDC output
24VDC output
Over Current Protection
Short Circuit Protection
Input voltage range
Dual output, balanced loads
Full load, input voltage from low to high
5% to 100% load
Dual output, main output 50% load,
Supplement output from 10% to 100% load
25% load step change
Full load
20MHz bandwidth
Test Conditions
Min.
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
Typ.
±1
±0.5
±0.2
±0.5
--
300
±3
±0.02
70
±10%
3.9
6.2
15
18
30
Max.
±3
±1
±0.5
±1
±5
500
±5
--
100
--
--
--
--
--
--
VDC
µs
%
%/°C
mVp-p
%
Unit
%
150
--
Hiccup, Continuous, automatic recovery
Note: * Ripple and noise tested by
“parallel
cable” method. See detailed operation instructions at
DC-DC Application Notes
.
The copyright and authority for the interpretation of the products are reserved by
MORNSUN
VRA_LD-15WR2 & VRB_LD-15WR2
2013.11.29-A/4
Page 2of 9
COMMON SPECIFICATIONS
Item
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Switching Frequency
MTBF
Safety approvals
Case Material
PCB mounting
（Without
heat sink）
PCB mounting
（With
heat sink）
Size
A2S Chassis mounting（Without heat sink）
A2S Chassis mounting（With heat sink）
A4S DIN-Rail mounting（Without heat sink）
A4S DIN-Rail mounting（With heat sink）
PCB mounting
（Without
heat sink）
PCB mounting
（With
heat sink）
Weight
A2S Chassis mounting（Without heat sink）
A2S Chassis mounting（With heat sink）
A4S DIN-Rail mounting（Without heat sink）
A4S DIN-Rail mounting（With heat sink）
--
--
--
--
--
--
Test Conditions
Input-Output, tested for 1 minute and leakage current less than 1 mA
Input-Output, test at 500VDC
Input-Output,100KHz/0.1V
PWM mode
MIL-HDBK-217F@25℃
24VDC output
Others
Min.
1500
1000
--
--
--
1000
Typ.
--
--
2000
1000
300
--
Max.
--
--
--
--
--
--
EN60950
Aluminum Alloy
50.80×25.40×11.80
50.80×25.40×16.30
76.00×31.50×21.20
76.00×31.50×25.10
76.00×31.50×25.80
76.00×31.50×29.70
28
36
50
58
70
78
--
--
--
--
--
--
g
mm
Unit
VDC
MΩ
pF
KHz
K hours
ENVIRONMENTAL SPECIFICATIONS
Item
Storage Humidity
Operating Temperature
Storage Temperature
The Max. Case Temperature
Lead Temperature
Cooling
Vibrating
Operating Temperature curve range
1.5mm from case for 10 seconds
Test Conditions
Non condensing
See Temperature Derating Curve（Figure 3）
Min.
5
-40
-55
--
--
Typ.
--
--
--
--
Max.
95
85
125
105
°C
Unit
%
--
300
Free air convection
10-55Hz, 10G, 30 Min. along X, Y and Z
EMC SPECIFICATIONS
EMI
CE
RE
ESD
RS
EFT
EMS
Surge
CS
Voltage dips、short
and interruptions
immunity
CISPR22/EN55022
CISPR22/EN55022
IEC/EN61000-4-2
IEC/EN61000-4-3
IEC/EN61000-4-4
IEC/EN61000-4-5
IEC/EN61000-4-6
IEC/EN61000-4-29
CLASS A（Without External Circuit）/ CLASS B（External Circuit Refer to Figure1-②）
CLASS A（Without External Circuit）/ CLASS B（External Circuit Refer to Figure1-②）
Contact
10V/m
±2KV（External
Circuit Refer to Figure1-①）
±2KV（External
Circuit Refer to Figure1-①）
3 Vr.m.s
0%-70%
±4KV
perf. Criteria B
perf. Criteria A
perf. Criteria B
perf. Criteria B
perf. Criteria A
perf. Criteria B
EMC RECOMMENDED CIRCUIT
FU SE
V in
+
MOV
GND
TVS
C0
C1
LDM1
LDM2
CY1
Vi n
+Vo
Recommended external circuit parameters:
LOAD
EUT
GND
-Vo
(0V)
①
②
C Y2
(Figure 1)
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.
Model
FUSE
MOV
LDM1
TVS
C0
C1
LDM2
CY1、CY2
Vin:12V
Vin:24V
Choose according to practical input
--
S14K35
--
56μH
SMCJ28A
SMCJ48A
680μF/25V
330μF/50V
1μF /50V
1μF /50V
4.7μH
1nF/2KV
Vin:48V
current
S14K60
SMCJ90A
330μF/100V
1μF /100V
The copyright and authority for the interpretation of the products are reserved by
MORNSUN
VRA_LD-15WR2 & VRB_LD-15WR2
2013.11.29-A/4
Page 3of 9
EMC RECOMMENDED CIRCUIT PCB LAYOUT
(Figure 2)
Note: The pad space between input and output (CY1/CY2) must
≥2mm.
EMC TEST WAVEFORM(CLASS B TEST CIRCUIT)
VRA2405LD-15WR2
CE (Positive line)
VRA2405LD-15WR2
CE (Negative line)
VRA4815LD-15WR2
CE (Positive line)
VRA4815LD-15WR2
CE (Negative line)
VRA2405LD-15WR2
RE(Horizontal)
VRA2405LD-15WR2
RE(Vertical)
VRA4815LD-15WR2
RE(Horizontal)
VRA4815LD-15WR2
RE(Vertical)
The copyright and authority for the interpretation of the products are reserved by
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VRA_LD-15WR2 & VRB_LD-15WR2
2013.11.29-A/4
Page 4of 9
VRB4815LD-15WR2
CE (Positive line)
VRB4815LD-15WR2
CE (Negative line)
VRB2405LD-15WR2
RE(Horizontal)
VRB2405LD-15WR2
RE(Vertical)
VRB4815LD-15WR2
RE(Horizontal)
VRB4815LD-15WR2
RE(Vertical)
PRODUCT TYPICAL CURVE
Temperature Derating Curve
120
Output Power Percent (%)
100
80
Without heatsink
With heatsink
60
40
20
Safe Operating Area
0
-40
0
40
65 70 85
120
Operating Temp(°C)
(Figure 3)
Efficiency VS Input Voltage curve
VRA1205LD-15WR2
(Full Load)
VRB1205LD-15WR2
Efficiency VS Output Load curve
VRA1205LD-15WR2
(Vin=Vin-nominal)
VRB1205LD-15WR2
100
95
90
100
90
Efficiency(%)
85
80
75
70
65
60
55
50
9
10
11
12
13
14
15
16
17
18
Efficiency(%)
80
70
60
50
40
30
5
10
20
30
40
50
60
70
80
90 100
Input Voltage(V)
Total Output Current (%)
2013.11.29-A/4
Page 5of 9
The copyright and authority for the interpretation of the products are reserved by
MORNSUN
VRA_LD-15WR2 & VRB_LD-15WR2
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