VRA_D-20W & VRB_D-20W Series
20W, WIDE INPUT, ISOLATED & REGULATED
SINGLE&DUAL OUTPUT DC-DC CONVERTER
multi-country patent protection
RoHS
FEATURES
●
Efficiency up to 87%
●
Wide (2:1) Input Range
●
1.5KVDC Input/Output Isolation
●
Over Voltage protection
●
Output Short Circuit Protection
●
Operating Temperature: -40°C to +71°C
●
Internal SMD construction
●
Metal Shielding Package
●
Industry Standard Pin out
●
MTBF>1,000,000 hours
●
RoHS Compliance
PRODUCT PROGRAM
Input
Part
Number
VRA1205D-20W
VRA1212D-20W
VRA1215D-20W
VRA1224D-20W *
VRB1203D-20W
VRB1205D-20W
VRB1212D-20W
VRB1215D-20W
VRB1224D-20W
VRA2405D-20W
12
9-18
Voltage (VDC)
Nominal
Range
Output
Voltage
(VDC)
±5
±12
±15
±24
3.3
5
12
15
24
±5
±12
±15
±24
24
18-36
3.3
5
12
15
24
±5
±12
±15
±24
48
36-75
3.3
5
12
15
24
Current
(mA)
±2000
±833
±666
±416
5400
4000
1666
1333
833
±2000
±833
±666
±416
5400
4000
1666
1333
833
±2000
±833
±666
±416
5400
4000
1666
1333
833
Efficiency capacitance
(%, Typ) (max,UF）
80
82
82
83
86
79
81
82
83
81
86
86
86
86
81
83
85
85
81
86
86
86
87
83
84
84
86
±3400
±680
±450
±220
13000
6800
2200
755
500
±3400
±680
±450
±220
13000
6800
2200
755
500
±3400
±680
±450
±220
13000
6800
2200
755
500
Application
The VRA_D-20W & VRB_D-20W series offer
20W of output, the VRA_D-20W & VRB_D-20W
series with 2:1 wide input voltage of 9-18,18-36
and 36-75VDC and features 1500VDC isolation,
short-circuit and over current protection, as well as
six
sided shielding. All models are particularly
suited to tele-communications, industrial, test
equipments power.
VRA2412D-20W
VRA2415D-20W
VRA2424D-20W *
VRB2403D-20W
VRB2405D-20W
VRB2412D-20W
VRB2415D-20W
VRB2424D-20W
VRA4805D-20W
VRA4812D-20W
VRA4815D-20W
VRA4824D-20W *
MODEL SELECTION
VRB1203D-20W
Rated Power
Package Style
Output Voltage
Input Voltage
Product Series
VRB4803D-20W
VRB4805D-20W
VRB4812D-20W
VRB4815D-20W
VRB4824D-20W
*Designing.
INPUT SPECIFICATIONS
Item
Test conditions
12Vinput models
MORNSUN Science& Technology co.,Ltd.
Address:
2th floor 6th building, Huangzhou
Industrial District, Guangzhou, China
Min
8.6
17.5
34
Typ
8.8
17.8
35
L-C
20
Max
9
18
36
Units
Start voltage
24Vinput models
48Vinput models
VDC
Tel: 86-20-38601850
Fax:86-20-38601272
Http://www.mornsun-power.com
Input filter
Start up time
Method of Remote
(Reference point: GND)
on
off
MS
3.5-40VDC or open circuit
GND or Low Voltage(<1.2V)
VRB_D-20W＆VRA_D-20W
A/3-2008
Page 1 of 2
MORNSUN reserves the copyright
Specifications subject to change without notice
OUTPUT SPECIFICATIONS
Item
Output voltage accuracy
Load regulation
Line regulation
Cross regulation
Ripple and noise
Transient recovery time
Transient peak deviation
Over load protection*
Output Short Circuit
3.3V
5V
Over voltage protection
12V
15V
24
Temperature drift (Vout)
Trim
Tested under 20MHz brand
25%load change
Input voltage range
120
3.63
5.5
13.2
16.5
26.4
0.02
±10%Vo
50
75
200
±2
130
Test conditions
Refer to recommended circuit
From 10% to 100% load
Input voltage from low to high
Min
Typ
±1
±0.5
±0.2
Max
±3
±1
±0.5
±5
150
300
±5
150
4.29
6.5
15.6
19.5
31.2
%/℃
VDC
VDC
mV
us
%
%
%
Units
OUTPUT VOLTAGE TRIM
+V0
Trim
Trim
+Vo
0V
Trim up/d own
0V
Trim up
Trim
Trim down
RECOMMENDED CIRCUIT
Vi n
L
Cin
Vout
Hiccup, automatics recovery
GND
L
DC
DC
Cout
0V
For single output
Vout
Cout
Cin
Vin
-0V
DC
GN D
DC
Cout
-Vo
For dual output
Fig.1
In order to abtain better performance for
the DC/DC models. it’s recommended that
use input and output filters as Fig.1 shown..
COMMON SPECIFICATIONS
Item
Operating Temperature
Storage Temperature
Storage Humidity
Isolation voltage
Isolation resistance
Isolation Capacitance
Switching frequency
MTBF
Case Material
Weight
100KHz / 1V
Nominal, full load
Test for 1 minute and 1 mA max
Test conditions
Min
-40
-55
5
1500
500
1000
300
100
Aluminous alloy
39
G
Typ
Max
71
105
95
VDC
MΩ
pF
KHz
K hours
℃
Units
DERATING & EFFICIENCY CURVE
Temperature derating curve
Output Power(%)
Operating Temp(
o
C)
Note:
1. All specifications are measured at TA=25°C, humidity<75%, nominal input voltage and rated output load
unless otherwise specified.
2. The CTRL control pin voltage is referenced to GND.
3. Typical Eff value at nominal input voltage and full load.
4. Capacitor MAX load tested at nominal input voltage and constant resistive load.
5. Refer to the diagram of Output Voltage trim up/down for trim applications.
6. The products cannot be used in parallel and in plug and play.
Curve of Efficiency VS output load
VRA2412D-20W
EFF %
100
90
80
70
60
50
40
30
20
10
0
EfficiencyVS Output load
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
F irst Angle Proj ectio n
50.80 (2.000)
2.54
(0.100)
45.72 ( 1.800)
RE CO MM E N DE D FO OT PR I N T
To p
v iew ,g r id :2 . 5 4m m (0 .1 in ch ) ,
d ia me te r :1 . 50 m m(0 .0 5 9in ch )
10.16 10.16 10.16
( 0.400) (0.400) (0.400)
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
Out put %Io
7
1
(B ottom View )
2
3
2.00 (0.080)
3
40.60 (1.600)
4
5
6
7
6
5
4
15.24
( 0.600)
10.1 6
(0.400)
2
1
Curve of Efficiency VS input Voltage
VRA2412D-20W
EFF %
Efficiency VS Input voltage
35.00 (1.380)
N o te:
U n it :m m (i n ch )
P in se ct io n : 1 .0 0 m m( 0. 0 39 in ch )
P in se ct io n t o l er a nce s :
+
0 .05 m m(
+
0 . 0 02 in c h)
G e ne r al to le ra n c es:
+
0 . 2 5mm (
+
0.0 1 0 in ch )
F OO T PRIN T D ETAIL S
S ing l e
P in
D ua l
1
Vin
V in
2
GN D
G ND
3
C t rl
C tr l
4
Trim
Tr im
- Vo
0V
5
Com
6
+ Vo
7
No pin
+ Vo
94
92
91
89
87
85
84
82
80
18
20
22
24
26
28
30
32
34
36
I npu t vol ta ge（V）
7.80
(0.300)
MORNSUN reserves the copyright
10.50
( 0.410)
10.00
(0.390)
Specifications subject to change without notice
(
4.10
0.161)
5.08
(0.200)
VRB_D-20W＆VRA_D-20W
A/3-2008
Page 1 of 2
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