D B SERIES
Product Features
Single, Dual , Triple DC/DC Converter, up to 40Watts
Ideal for Telecom and Networking Applications
2:1 Input Range, High Efficiency
Industry Compatible Pin Out, 2” x 2” Form Factor
Remote On / Off, TTL
Six Side Shielded, Low Profile 0.4” Height
No external Input or Output Filtering required
Regulated Output(s)
- >1500VDC I/O Isolation- MTBF = 1.398x106 hours,
Bellcore TR-NWT-000332
- UL/CUL 1950, file #E155800
-
-
-
-
-
-
-
-
UP TO 40 WATTS
TYPICAL APPLICATIONS:
24Vdc or 48Vdc Telecom
On-Board Distributed Power
Low Profile & Height PCB
Multiple Output Requirements
TABLE 1
Model
Number
Input Output
Voltage Volts//Amps
VDC
18-36
18-36
18-36
18-36
18-36
18-36
18-36
18-36
18-36
36-75
36-75
36-75
36-75
36-75
36-75
36-75
36-75
36-75
3.3 // 8
5 // 8
12 // 3.33
15 // 2.67
3.3/5 // 4/4
3.3/+-12 //6/.4
3.3/4-15/6/.3
5/+/-12 //6/+/-.4
5/+/-15//6/+/-.3
3.3 // 8
5 // 8
12 // 3.33
15 // 2.67
3.3/5 // 4/4
3.3/+/-12 // 6/.4
3.3/ +/-15/6/.3
5/+/-12 // 6/+/-.4
5/+/-15 // 6/+/-.3
Effic.
%
Overview
The DB Series of high efficiency DC/DC converters
are available as single dual, or triple output versions,
with up to 40 Watts of output power. The product is
ideal for Telecom and Networking applications. The
converter is designed for a 2:1 input range, either
nominal 24 Volt (18VDC -36VDC) or nominal 48VDC
(36VDC-75VDC). The converter is PCB mountable,
the package has a form factor of 2” x2” x .4” and is
six side shielded. The standard specifications include
the Pi-input filter, excellent load regulation, remote
ON/OFF capability, and short circuit protection. The
isolation voltage meets the >1500VDC telecom
requirements.
DB24S3.3-26
DB24S-5-40
DB24S12-40
DB24S15-40
DB24D3.3-5-33**
DB24T3.3-12-31
DB24T3.3-15-31
DB24T5-12-40
DB24T5-15-40
DB48S3.3-26
DB48S5-40
DB48S5-12-40
DB48S5-15-40
DB48D3.3-5-33**
DB48T3.3-12-31
DB48T3.3-15.31
DB48T5-12-40
DB48T5-15-40
** UL/CUL PENDING
88
88
90
90
88
88
82
89
89
88
90
90
90
88
88
88
89
89
SPECIFICATIONS:
48VDC (36-75VDC)
24VDC (18-36VDC)
Output Voltage:
see Table 1
Output Power:
40W
Efficiency:
up to 90%
Isolation Voltage:
>1500VDC
Operating Temperature: -25C to +71C
Max. Case Temp.
100C
Dimensions:
2” x 2” x 0.4”
Nominal Input:
For further information or Application
Support:
www.wallindustries.com
or call 1-888-597-WALL
1/12/03
1
603 778 2300
W W W
.
WALLINDUSTRIES
.
C O M
UP TO 40 WATTS
D B SERIES
SPECIFICATION
INPUT VOLTAGE:
REMOTE ON/OFF
INPUT FILTER
OUTPUT VOLTAGE
OUTPUT VOLTAGE Set Point
M ETHOD
48V version
24V version
TTL
Pi-Filter
MIN.
36
18
TYP.
48
24
M AX.
75
36
UNITS
Volts
Volts
TTL logic
Volts
% of Vout
A
% of Iout
mV peak/peak
OUTPUT CURRENT
OVERCURRENT PROTECTION Limiting
OUTPUT RIPPLE
20MHz BW
SHORT CIRCUIT PROTECTION continuous
LINE REGULATION
HL / LL
see table
+/- 1%
auxillaries +/- 5%
see table
<70mVpp
+/- 0.5% Main Output
+/- 3.0% Auxiliary Output
+/- 0.5%(single)
+/-1% (dual)
+/-2% (triple), primary
+/- 5% (aux.)
<500u sec
10%
see table
>1500VDC
300kHz typ.
-25
-55
+71
105
~2 oz
2”x 2”x 0.4”
LOAD REGULATION
10-100% load
TRANSIENT RESPONSE
OUTPUT TRIM
EFFICIENCY
ISOLATION VOLTAGE
ISOLATION RESISTANCE
SWITCHING FREQUENCY
OPERATING TEMPERATURE
STORAGE TEMPERATURE
WEIGHT
DIMENSIONS
CASE MATERIAL
within +/-1% Vout
single output
% of Vout
VDC/sec
In/Out >100MOhms
degree C
degree C
inches
Ni coated Cu
case w/o pin
All case and Pin-to-Case dimensions are for reference only, unless otherwise
noted. All DC/DC converters should be externally fused at the front end for pro-
tection. Significant capacitive load at the output of the converter may inhibit the
start-up and operation.
1/12/03
W W W
.
WALLINDUSTRIES
.
C O M
603 778 2300
2
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