Data Sheet
April 1999
MW005-Series Power Modules:
36 Vdc to 75 Vdc Inputs; 5 W
Features
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Small size: 50.8 mm x 27.9 mm x 11.7 mm
(2.00 in. x 1.10 in. x 0.46 in.)
Wide input-voltage range: 36 Vdc to 75 Vdc
Load regulation: 0.15% max (MW005A, B, C)
Line regulation: 0.05% max (MW005A, B, C)
Input-to-output isolation
No external filtering required
Operating ambient temperature range: –40 °C to
+85 °C
PC-board mountable
High reliability
Overcurrent protection, unlimited duration
Output overvoltage protection
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The MW005-Series Power Modules use advanced surface-
mount technology and deliver high-quality, efficient, and
compact dc-dc conversion in a nonconductive case.
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Applications
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Telecommunications
Digital circuitry
Distributed power architecture
UL*
1950 Recognized,
CSA
†
C22.2 No. 950-95
Certified, VDE 0805 (EN60950, IEC950) Licensed
CE mark meets 73/23/EEC and 93/68/EEC
directives
‡
Meets FCC and VDE Class B limits for radiated
emissions
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Options
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Standard long pins: 5.84 mm ± 0.51 mm
(0.230 in. ± 0.020 in.)
Pin lengths: 3.68 mm ± 0.25 mm
(0.145 in. ± 0.010 in.)
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*
UL
is a registered trademark of Underwriters Laboratories, Inc.
†
CSA
is a registered trademark of Canadian Standards Associa-
tion.
‡ 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.)
Description
The MW005A, B, C, BK, and CL Power Modules are dc-dc converters that operate over a wide input-voltage
range of 36 Vdc to 75 Vdc and provide precisely regulated dc outputs. The outputs are fully isolated from the
inputs, allowing versatile polarity configurations and grounding connections. The modules have maximum
power ratings of 5 W at typical full-load efficiencies of 82% (80% for the MW005A).
The modules are encapsulated in nonconductive cases that mount on printed-circuit boards. In a natural con-
vection environment, the modules are rated to full load at 70 °C with no heat sinking or external filtering. The
modules can be used up to 85 °C with derated output power (4.5 W with an external input capacitor; 3.5 W with
no external capacitor).
MW005-Series Power Modules:
36 Vdc to 75 Vdc Inputs; 5 W
Data Sheet
April 1999
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 (2 ms)
Operating Ambient Temperature
(0.30 ms
–1
(60 ft./min.) natural convection)
Storage Temperature
I/O Isolation Voltage
Device
All
All
All
All
All
Symbol
V
I
V
I, trans
T
A
T
stg
—
Min
—
—
–40
–40
—
Max
80
100
85
100
500
Unit
Vdc
V
°C
°C
Vdc
Electrical Specifications
Unless otherwise indicated, specifications apply to all devices 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
A
= 25 °C, see Figure 24 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
fusing is not included; however, to achieve maximum safety and system protection, always use an input line fuse.
The safety agencies require a normal-blow fuse with a maximum rating of 5 A in series with the input (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 fur-
ther information.
Symbol
V
I
I
I, max
I
2
t
I
I
Min
36
—
—
—
Typ
48
—
0.3
30
Max
75
600
1.0
—
Unit
Vdc
mA
A
2
s
mAp-p
—
—
53
—
dB
2
Tyco Electronics Corp.
Data Sheet
April 1999
MW005-Series Power Modules:
36 Vdc to 75 Vdc Inputs; 5 W
Electrical Specifications
(continued)
Table 2. Output Specifications
Parameter
Output Voltage Set Point
(V
I
= 48 V; I
O
= I
O, max
; T
A
= 25 °C)
Device
MW005A
MW005B
MW005C
MW005BK
MW005CL
Output Voltage
(Over all operating input voltage,
resistive load, and temperature condi-
tions until end of life. See Figures 26
and 27. See Figures 5—8 for cross
regulation on dual outputs.)
Output Regulation:
Line (V
I
= 36 Vdc to 75 Vdc)
Load (I
O
= I
O, min
to I
O, max
)
Temperature (T
A
= –40 °C to + 85 °C)
(See Figures 2—4.)
Output Ripple and Noise Voltage
(With 0.1 µF, ceramic, bypass capaci-
tor on output; see Figure 25.):
RMS
MW005A
MW005B
MW005C
MW005BK
MW005CL
Symbol
V
O, set
V
O, set
V
O, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O
V
O
V
O
V
O1
V
O2
V
O1
V
O2
—
—
—
—
—
Min
4.85
11.52
14.40
11.40
–11.40
14.25
–14.25
4.80
11.40
14.25
10.80
–10.80
13.50
–13.50
—
—
—
—
—
Typ
5.00
12.00
15.00
12.00
–12.00
15.00
–15.00
—
—
—
—
—
—
—
0.01
0.05
15
40
45
Max
5.20
12.48
15.60
12.60
–12.60
15.75
–15.75
5.25
12.60
15.75
13.20
–13.20
16.50
–16.50
0.05
0.15
70
150
190
Unit
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
%V
O
%V
O
mV
mV
mV
MW005A, B, C
MW005A, B, C
MW005A
MW005B
MW005C
Peak-to-peak (5 Hz to 20 MHz)
MW005A
MW005B, C
MW005BK, CL
MW005A
MW005B, C
MW005BK, CL
MW005A
MW005B
MW005C
MW005BK
MW005CL
—
—
—
—
—
—
I
O
I
O
I
O
I
O1
I
O2
I
O1
I
O2
—
—
—
—
—
—
0.1
0.02
0.02
0.02
0.02
0.017
0.017
—
—
—
—
—
—
—
—
—
—
—
—
—
Output Current
(At I
O
< I
O, min
, the modules may
exceed output ripple specifications
and dual-output modules may exceed
specified output voltages. At
T
A
> 70 °C, see Figure 28 for
derating.)
15
25
80
50
100
250
1.0
0.42
0.33
0.21
0.21
0.17
0.17
mVrms
mVrms
mVrms
mVp-p
mVp-p
mVp-p
A
A
A
A
A
A
A
Tyco Electronics Corp.
3
MW005-Series Power Modules:
36 Vdc to 75 Vdc Inputs; 5 W
Data Sheet
April 1999
Electrical Specifications
(continued)
Table 2. Output Specifications
(continued)
Parameter
Device
Symbol
Min
Typ
Max
Unit
Output Current-limit Inception
(See Figures 9—15.):
V
O
= 4.5 V
MW005A
V
O
= 10.8 V
MW005B
V
O
= 13.5 V
MW005C
V
O1
or V
O2
= 10.2 V
MW005BK
V
O1
or V
O2
= 12.75 V
MW005CL
Output Current Limit
(See Figures 9—15.):
V
O
= 1.0 V
MW005A
V
O
= 1.0 V
MW005B, C
V
O1
or V
O2
= 1.0 V
MW005BK, CL
Output Short-circuit Current
MW005A
(V
O
= 250 mV; see Figures 9—15.)
MW005B, C, BK, CL
Efficiency
MW005A
(V
I
= 48 V; I
O
= I
O, max
; T
A
= 25 °C;
MW005B, C
see Figures 16, 17, 26, and 27.)
MW005BK, CL
Dynamic Response
(
∆
I
O
/
∆
t = 1 A/10 µs, V
I
= 48 V, T
A
= 25 °C;
for MW005BK and CL, applies to V
O1
and
V
O2
at I
O
= I
O, max
.):
Load Change from I
O
= 50% to 25%
of I
O, max
(See Figures 18—20.):
Peak Deviation
MW005A
MW005B
MW005C
MW005BK, CL
MW005A, B, C
Settling Time (V
O
< 10% of peak
deviation)
MW005BK, CL
Load Change from I
O
= 50% to 75%
of I
O, max
(See Figures 21—23.):
Peak Deviation
MW005A
MW005B, C
MW005BK, CL
Settling Time (V
O
< 10% of peak
MW005A, B, C
MW005BK, CL
deviation)
—
—
—
—
—
—
—
—
—
—
1.6
0.8
0.7
0.8
0.7
2.5
1.4
1.3
1.4
1.3
A
A
A
A
A
—
—
—
—
—
η
η
η
—
—
—
—
—
77
79
78
—
—
—
1.5
1.0
80
82
81
3.0
2.0
2.0
—
—
—
—
—
A
A
A
A
A
%
%
%
—
—
—
—
—
—
—
—
—
—
—
—
80
70
60
50
3.5
5.0
—
—
—
—
—
—
mV
mV
mV
mV
ms
ms
—
—
—
—
—
—
—
—
—
—
80
70
50
3.5
5.0
—
—
—
—
—
mV
mV
mV
ms
ms
4
Tyco Electronics Corp.
Data Sheet
April 1999
MW005-Series Power Modules:
36 Vdc to 75 Vdc Inputs; 5 W
Electrical Specifications
(continued)
Table 3. Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
Device
All
All
Min
—
10
Typ
1200
—
Max
—
—
Unit
pF
MΩ
General Specifications
Parameter
Calculated MTBF
(at 80% of I
O, max
; T
C
= 40 °C)
Weight
Device
All
All
—
Min
Typ
8,800,000
—
28 (1.0)
Max
Unit
hours
g (oz.)
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions for further information.
Parameter
Output Overvoltage Protection (clamp)
Device
MW005A
MW005B
MW005C
MW005BK
MW005CL
Symbol
V
O, clamp
V
O, clamp
V
O, clamp
V
O1, clamp
V
O2, clamp
V
O1, clamp
V
O2, clamp
Min
—
—
—
—
—
—
—
Typ
6.0
14
17
16
–16
19
–19
Max
7.0
16
19
18
–18
21
–21
Unit
V
V
V
V
V
V
V
Tyco Electronics Corp.
5
Microchip MCU
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