M20WVRA(B)D Series
20W, WIDE INPUT, ISOLATED & REGULATED
SINGLE&DUAL OUTPUT DC-DC CONVERTER
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
M20WVRA1205D
M20WVRA1212D
M20WVRA1215D
M20WVRA1224D
M20WVRB1203D
M20WVRB1205D
M20WVRB1212D
M20WVRB1215D
M20WVRB1224D
M20WVRA2405D
M20WVRA2412D
M20WVRA2415D
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 M20WVRA(B)D series offer 20W of output
with 2:1 wide input voltage ranges 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.
M20WVRA2424D
M20WVRB2403D
M20WVRB2405D
M20WVRB2412D
M20WVRB2415D
M20WVRB2424D
M20WVRA4805D
M20WVRA4812D
M20WVRA4815D
M20WVRA4824D
M20WVRB4803D
M20WVRB4805D
M20WVRB4812D
M20WVRB4815D
M20WVRB4824D
The +/-24Voutputs are currently in design.
INPUT SPECIFICATIONS
Item
Test conditions
12Vinput models
Start voltage
24Vinput models
48Vinput models
Input filter
Start up time
Method of Remote
(Reference point: GND)
on
off
Min
8.6
17.5
34
Typ
8.8
17.8
35
L-C
20
3.5-40VDC or open circuit
GND or Low Voltage(<1.2V)
MS
Max
9
18
36
VDC
Units
Tel: 732-249-2656
www.megaelectronics.com
Fax: 732-249-7442
Edition: A/3
2008
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 bandwidth
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
%/°C
VDC
VDC
%
Units
OUTPUT VOLTAGE TRIM
+V0
Trim
Trim
+Vo
0V
0V
Trim up
Trim
Trim down
mV
us
%
%
Trim up/d own
RECOMMENDED CIRCUIT
Vi n
L
Cin
Vou t
Hiccup, automatics recovery
GND
L
DC
DC
Cout
0V
For single output
Vou t
Cout
Cin
Vin
DC
GND
DC
Cout
-0V
-Vo
For dual output
Fig.1
In order to obtain 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
°C
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 efficiency 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
M20WVRA2412D
EFF%
100
90
80
70
60
50
40
30
20
10
0
Ef f i ci encyVS O put l oad
ut
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
First Angle Projectio n
50.80 (2.000)
2.54
(0.100)
45.72 (1.800)
R EC OMMEN D ED F OOT PR I N T
Top
vie w,grid:2 .54m m(0 .1in ch),
di ame ter:1.5 0mm (0.05 9in ch)
0% 10% 20% 30% 40% 50% 60% 70% 80% 90%100%
O put % o
ut
I
10.16 10.16 10.16
(0.400) (0.400)(0.400)
7
1
(Bo tto m Vie w)
2
3
6
5
4
2.00 (0.080)
3
40.60 (1.600)
4
5
6
7
15.24
(0.600)
10.16
(0.400)
2
1
Curve of Efficiency VS input Voltage
M20WVRA2412D
EFF%
Ef f i ci ency VS I nput vol t age
35.00 (1.380)
N ot e:
U nit : mm(inch)
Pin sect ion: 1. 00mm(0. 039inch)
Pin sect ion t olerances: 0. 05mm( 0. 002inch)
General t olerances: 0. 25mm( 0. 010inch)
F OOT PR I N T D ETAI LS
Single
D ual
Pin
Vin
1
Vin
GN D
2
GN D
C t rl
3
C t rl
Trim
4
Trim
-Vo
0V
5
C om
+Vo
6
7
N o pin
+Vo
94
92
91
89
87
85
84
82
80
7.80
(0.300)
10.50
(0. 410)
10.00
(0. 390)
4.10
(
0.161)
5.08
(0.200)
18
20
22
24
26
28
30
32
34
36
I nput vol t age（V）
Tel: 732-249-2656
www.megaelectronics.com
Fax: 732-249-7442
Edition: A/3
2008
