Data Sheet
June 1997
DW025 Dual Output-Series Power Modules: dc-dc Converters;
36 Vdc to 75 Vdc Input; Dual Outputs; 25 W
Options
s
s
Higher-accuracy output voltage clamp set point
Short pins: 2.79 mm ± 0.25 mm
(0.110 in. ± 0.010 in.)
Heat sink available for extended operation
Negative logic remote on/off
s
s
Description
The DW025-Series Power Modules are a family of
dc-dc converters that operate over an input voltage
range of 36 Vdc to 75 Vdc and provide two regulated
outputs. These modules offer low noise levels with
industry-standard pinouts in a small footprint. Each
highly reliable and efficient unit features remote
on/off and current limit.
Each output is individually regulated by its own con-
trol circuit and has an independent overvoltage
clamp. With standard outputs of +3.3 V, ±5 V, ±12 V,
and ±15 V, the DW025-Series is flexible enough to
provide modified standard units with any combination
of output voltages from 2 V to 15 V.
Efficiency greater than 80%, a wide operating tem-
perature range, and a metal case are additional fea-
tures of these modules. They have
UL, CSA,
and VDE
recognition and operate within FCC and CISPR Class
A limits for radiated emissions.
The DW025AJ-M, BK-M, and CL-M Power Modules
are available with common output ground pins
(pinout A); the DW025AA-M, AB-M, AF-M, BB-M,
and CC-M Power Modules are available with sepa-
rate output ground pins (pinout B).
The DW025-Series Power Modules use advanced, surface-
mount technology and deliver high-quality, compact, dc-dc
conversion at an economical price.
Features
s
s
s
s
s
s
s
s
s
s
Small size: 71.1 mm x 61.0 mm x 12.7 mm
(2.80 in. x 2.40 in. x 0.50 in.)
Low output noise
Industry-standard pinout
Metal case with separate case ground pin
2:1 input voltage range
Remote on/off (positive logic)
UL*
Recognized,
CSA
†
Certified, and VDE
Licensed
Within FCC and CISPR Class A Radiated Limits
CE mark meets 73/23/EEC and 93/68/EEC
directives
‡
Two tightly regulated outputs
Applications
s
s
Distributed power architectures
Telecommunications
*
UL
is a registered trademark of Underwriters Laboratories, Inc.
†
CSA
is a registered trademark of the Canadian Standards Asso-
ciation.
‡ This product is intended for integration into end-use equipment.
All the required procedures for CE marking of end-use equip-
ment should be followed. (The CE mark is placed on selected
products.)
DW025 Dual Output-Series Power Modules: dc-dc Converters;
36 Vdc to 75 Vdc Input; Dual Outputs; 25 W
Data Sheet
June 1997
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Parameter
Input Voltage
Continuous
Transient (<10 ms)
I/O Isolation Voltage
dc
Transient (1 minute)
Operating Case Temperature
Storage Temperature
Symbol
V
I
V
I, trans
—
—
T
C
T
stg
Min
—
—
—
—
–40
–55
Max
80
100
500
850
100
125
Unit
V
V
V
V
°C
°C
Electrical Specifications
Note:
Two pinouts are available for the DW025-Series Power Modules. The DW025AJ-M, AB-M, BK-M, and
CL-M Power Modules, which have both positive and negative outputs, have a common output ground pin
(pinout A). The DW025AA-M, AB-M, AF-M, BB-M, and CC-M Power Modules, which have dual positive out-
puts, have separate output ground pins (pinout B). See Outline Diagrams section.
Unless otherwise indicated, specifications apply to all modules over all operating input voltage, resistive load, and
temperature conditions.
Table 1. Input Specifications
Parameter
Operating Input Voltage
Maximum Input Current
(V
I
= 0 V to 75 V; I
O
= I
O
,
max
; see Figure 1.)
Inrush Transient
Input Reflected-ripple Current, Peak-to-Peak
(5 Hz to 20 MHz, 12 µH source impedance;
T
C
= 25 °C) (See Figure 11 and Design
Considerations section.)
Input Ripple Rejection (120 Hz)
Fusing Considerations
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This encapsulated power module can be used in a wide variety of applications, ranging from simple stand-alone
operation to an integrated part of a sophisticated power architecture. To preserve maximum flexibility, internal fus-
ing is not included; however, to achieve maximum safety and system protection, always use an input line fuse. The
safety agencies require a normal-blow, dc fuse with a maximum rating of 5 A (see Safety Considerations section).
Based on the information provided in this data sheet on inrush energy and maximum dc input current, the same
type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s data for further information.
Symbol
V
I
I
I, max
i
2
t
—
Min
36
—
—
—
Typ
48
—
—
25
Max
75
2.0
0.8
—
Unit
Vdc
A
A
2
s
mAp-p
—
—
60
—
dB
2
Tyco Electronics Corp.
Data Sheet
June 1997
DW025 Dual Output-Series Power Modules: dc-dc Converters;
36 Vdc to 75 Vdc Input; Dual Outputs; 25 W
Electrical Specifications
(continued)
Table 2. Output Specifications
Parameter
Output Voltage
(Over all operating input voltage,
resistive load, and temperature
conditions until end of life. See
Figure 13.)
Device
DW025AJ-M
DW025BK-M
DW025CL-M
DW025AA-M
DW025AB-M
DW025AF-M
DW025BB-M
DW025CC-M
Output Voltage Set Point
(V
I
= 48 V; I
O
= I
O, max
; T
A
= 25 °C)
DW025AJ-M
DW025BK-M
DW025CL-M
DW025AA-M
DW025AB-M
DW025AF-M
DW025BB-M
DW025CC-M
Output Regulation:
Line (V
I
= 36 V to 75 V)
Load (I
O1
= I
O, min
to I
O, max,
I
O2 =
I
O, max
)
Load (I
O2
= I
O, min
to I
O, max,
I
O1 =
I
O, max
)
Symbol
V
O1
V
O2
V
O1
V
O2
V
O1
V
O2
V
O1
V
O2
V
O1
V
O2
V
O1
V
O2
V
O1
V
O2
V
O1
V
O2
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
—
—
—
Min
4.80
–4.80
11.40
–11.40
14.25
–14.25
4.80
4.80
4.80
11.40
4.80
3.16
11.40
11.40
14.25
14.25
4.90
–4.90
11.76
–11.76
14.70
–14.70
4.90
4.90
4.90
11.76
4.90
3.23
11.76
11.76
14.70
14.70
—
—
—
Typ
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
5.0
–5.0
12.0
–12.0
15.0
–15.0
5.0
5.0
5.0
12.0
5.0
3.3
12.0
12.0
15.0
15.0
0.1
0.1
0.1
Max
5.25
–5.25
12.60
–12.60
15.75
–15.75
5.25
5.25
5.25
12.60
5.25
3.45
12.60
12.60
15.75
15.75
5.10
–5.10
12.24
–12.24
15.30
–15.30
5.10
5.10
5.10
12.24
5.10
3.37
12.24
12.24
15.30
15.30
0.2
0.4
0.4
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
%
%
%
Temperature
(T
C
= –40 °C to +100 °C)
All
All
DW025AJ-M,
AA-M, BK-M,
BB-M, CL-M,
CC-M, AB-M
DW025AF-M
DW025AJ-M,
AA-M, AF-M
DW025BK-M,
BB-M
DW025CL-M,
CC-M
DW025AB-M
(5 V output)
DW025AB-M
(12 V output)
—
—
—
—
—
—
—
—
—
—
—
—
0.4
15
40
40
15
40
0.8
70
150
190
70
150
%
mV
mV
mV
mV
mV
Tyco Electronics Corp.
3
DW025 Dual Output-Series Power Modules: dc-dc Converters;
36 Vdc to 75 Vdc Input; Dual Outputs; 25 W
Data Sheet
June 1997
Electrical Specifications
(continued)
Table 2. Output Specifications
(continued)
Parameter
Output Ripple and Noise
(See Figure 12.):
RMS
Device
Symbol
Min
Typ
Max
Unit
DW025AJ-M,
AA-M, AF-M
DW025BK-M, BB-M
DW025CL-M, CC-M
DW025AB-M
(5 V output)
DW025AB-M
(12 V output)
—
—
—
—
—
—
—
—
—
—
I
O1
I
O2
I
O1
I
O2
I
O1
I
O2
I
O1
I
O2
—
—
—
I
O1
I
O2
—
—
—
I
O1
I
O2
η
η
η
η
η
—
—
—
—
—
—
—
—
—
—
0.20
0.20
0.10
0.10
0.08
0.08
0.20
0.10
—
—
—
—
—
—
—
—
—
—
75
68
75
79
79
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3.7
1.5
1.3
3.7
1.5
3.5
1.0
1.0
3.5
1.0
78
75
79
82
82
15
20
25
15
20
150
200
250
150
200
2.50
2.50
1.04
1.04
0.83
0.83
2.50
1.04
6.5
2.9
2.7
6.5
2.9
7.0
3.0
3.0
7.0
3.0
—
—
—
—
—
mVrms
mVrms
mVrms
mVrms
mVrms
mVp-p
mVp-p
mVp-p
mVp-p
mVp-p
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
%
%
%
%
%
Peak-to-peak (5 Hz to 20 MHz)
DW025AJ-M,
AA-M, AF-M
DW025BK-M, BB-M
DW025CL-M, CC-M
DW025AB-M
(5 V output)
DW025AB-M
(12 V output)
DW025AJ-M,
AA-M, AF-M
DW025BK-M, BB-M
DW025CL-M, CC-M
DW025AB-M
Output Current
(At I
O
< I
O, min
, the modules may exceed
output ripple specifications.)
Output Current-limit Inception
(V
O
= 90% of V
O, nom
; see Figure 2.)
DW025AJ-M,
AA-M, AF-M
DW025BK-M, BB-M
DW025CL-M, CC-M
DW025AB-M
DW025AJ-M,
AA-M, AF-M
DW025BK-M, BB-M
DW025CL-M, CC-M
DW025AB-M
DW025AJ-M, AA-M
DW025AF-M
DW025AB-M
DW025BK-M, BB-M
DW025CL-M, CC-M
Output Short-circuit Current
(V
O
= 250 mV)
Efficiency (V
I
= 48 V; I
O
= I
O, max
;
T
C
= 25 °C; see Figures 3 and 13.)
4
Tyco Electronics Corp.
Data Sheet
June 1997
DW025 Dual Output-Series Power Modules: dc-dc Converters;
36 Vdc to 75 Vdc Input; Dual Outputs; 25 W
Electrical Specifications
(continued)
Table 2. Output Specifications
(continued)
Parameter
Dynamic Response
(
∆
I
O
/
∆
t = 1 A/10 µs, V
I
= 48 V,
T
A
= 25 °C):
Load Change from I
O
= 50% to 75% of
I
O, max
: (See Figures 7 to 9.):
Peak Deviation
Device
Symbol
Min
Typ
Max
Unit
Settling Time (V
O
< 10% peak
deviation)
Load Change from I
O
= 50% to 25% of
I
O, max
(See Figures 4 to 6.):
Peak Deviation
DW025AJ-M,
AA-M, AF-M
DW025BK-M,
BB-M
DW025CL-M,
CC-M
DW025AB-M
(5 V output)
DW025AB-M
(12 V output)
All
—
—
—
—
—
—
—
—
—
—
—
—
160
250
250
160
250
3
—
—
—
—
—
—
mV
mV
mV
mV
mV
ms
Settling Time (V
O
< 10% peak
deviation)
Table 3. Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
DW025AJ-M,
AA-M, AF-M
DW025BK-M,
BB-M
DW025CL-M,
CC-M
DW025AB-M
(5 V output)
DW025AB-M
(12 V output)
All
—
—
—
—
—
—
—
—
—
—
—
—
160
250
250
160
250
3
—
—
—
—
—
—
mV
mV
mV
mV
mV
ms
Min
—
10
Typ
1200
—
Max
—
—
Unit
pF
MΩ
General Specifications
Parameter
Calculated MTBF (I
O
= 80% of I
O, max
; T
C
= 40 °C)
Weight
Tyco Electronics Corp.
Min
—
Typ
2,800,000
—
Max
113 (4.0)
Unit
hours
g (oz.)
5
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