Data Sheet
April 1999
MW005-Series Power Modules:
36 Vdc to 75 Vdc Inputs; 5 W
The MW005-Series Power Modules use advanced surface-
mount technology and deliver high-quality, efficient, and
compact dc-dc conversion in a nonconductive case.
Applications
■
Telecommunications
■
Digital circuitry
■
Distributed power architecture
Options
■
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.)
Features
■
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
■
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
*
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 po wer (4.5 W with an external input capacitor; 3.5 W with
no external capacitor).
MW005-Series Power Modules: Data Sheet
36 Vdc to 75 Vdc Inputs; 5 W April 1999
2 Tyco Electronics Corp.
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.
Electrical Specifications
Unless otherwise indicated, specifications apply to all devices over all operating input voltage, resistive load, and
temperature conditions.
Table 1. Input Specifications
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 preser ve 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.
Parameter Device Symbol Min Max Unit
Input Voltage:
Continuous
Transient (2 ms) All
All V
I
V
I, trans
—
—80
100 Vdc
V
Operating Ambient Temperature
(0.30 ms
–1
(60 ft./min.) natural convection) All T
A
–40 85 °C
Storage Temperature All T
stg
–40 100 °C
I/O Isolation Voltage All — — 500 Vdc
Parameter Symbol Min Typ Max Unit
Operating Input Voltage V
I
36 48 75 Vdc
Maximum Input Current
(V
I
= 0 V to 75 V; I
O
= I
O, max
; see Figure 1.) I
I, max
— — 600 mA
Inrush Transient I
2
t— 0.3 1.0 A
2
s
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.)
I
I
— 30 — mAp-p
Input Ripple Rejection (120 Hz) — — 53 — dB
Data Sheet MW005-Series Power Modules:
April 1999 36 Vdc to 75 Vdc Inputs; 5 W
Tyco Electronics Corp. 3
Electrical Specifications
(continued)
Table 2. Output Specifications
Parameter Device Symbol Min Typ Max Unit
Output Voltage Set Point
(V
I
= 48 V; I
O
= I
O, max
; T
A
= 25 °C) MW005A
MW005B
MW005C
MW005BK
MW005CL
V
O, set
V
O, set
V
O, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
4.85
11.52
14.40
11.40
–11.40
14.25
–14.25
5.00
12.00
15.00
12.00
–12.00
15.00
–15.00
5.20
12.48
15.60
12.60
–12.60
15.75
–15.75
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
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.)
MW005A
MW005B
MW005C
MW005BK
MW005CL
V
O
V
O
V
O
V
O1
V
O2
V
O1
V
O2
4.80
11.40
14.25
10.80
–10.80
13.50
–13.50
—
—
—
—
—
—
—
5.25
12.60
15.75
13.20
–13.20
16.50
–16.50
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
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.)
MW005A, B, C
MW005A, B, C
MW005A
MW005B
MW005C
—
—
—
—
—
—
—
—
—
—
0.01
0.05
15
40
45
0.05
0.15
70
150
190
%V
O
%V
O
mV
mV
mV
Output Ripple and Noise Voltage
(With 0.1 µF, ceramic, bypass capaci-
tor on output; see Figure 25.):
RMS
Peak-to-peak (5 Hz to 20 MHz)
MW005A
MW005B, C
MW005BK, CL
MW005A
MW005B, C
MW005BK, CL
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
15
25
80
50
100
250
mVrms
mVrms
mVrms
mVp-p
mVp-p
mVp-p
Output Current
(At I
O
< I
O, min
, the modules may
exceed output ripple specifications
and dual-output modules ma y exceed
specified output voltages. At
T
A
> 70 °C, see Figure 28 for
derating.)
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
—
—
—
—
—
—
—
1.0
0.42
0.33
0.21
0.21
0.17
0.17
A
A
A
A
A
A
A
MW005-Series Power Modules: Data Sheet
36 Vdc to 75 Vdc Inputs; 5 W April 1999
4 Tyco Electronics Corp.
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
V
O
= 10.8 V
V
O
= 13.5 V
V
O1
or V
O2
= 10.2 V
V
O1
or V
O2
= 12.75 V
MW005A
MW005B
MW005C
MW005BK
MW005CL
—
—
—
—
—
—
—
—
—
—
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
Output Current Limit
(See Figures 9—15.):
V
O
= 1.0 V
V
O
= 1.0 V
V
O1
or V
O2
= 1.0 V
MW005A
MW005B, C
MW005BK, CL
—
—
—
—
—
—
—
—
—
3.0
2.0
2.0
A
A
A
Output Short-circuit Current
(V
O
= 250 mV; see Figures 9—15.) MW005A
MW005B, C, BK, CL —
——
—1.5
1.0 —
—A
A
Efficiency
(V
I
= 48 V; I
O
= I
O, max
; T
A
= 25 °C;
see Figures 16, 17, 26, and 27.)
MW005A
MW005B, C
MW005BK, CL
η
η
η
77
79
78
80
82
81
—
—
—
%
%
%
Dynamic Response
(
∆
I
O
/
∆
t = 1 A/10 µs, V
I
= 48 V, T
A
= 25 °C;
f or 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
Settling Time (V
O
< 10% of peak
deviation)
Load Change from IO = 50% to 75%
of IO, max (See Figures 21—23.):
Peak Deviation
Settling Time (VO < 10% of peak
deviation)
MW005A
MW005B
MW005C
MW005BK, CL
MW005A, B, C
MW005BK, CL
MW005A
MW005B, C
MW005BK, CL
MW005A, B, C
MW005BK, CL
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
80
70
60
50
3.5
5.0
80
70
50
3.5
5.0
—
—
—
—
—
—
—
—
—
—
—
mV
mV
mV
mV
ms
ms
mV
mV
mV
ms
ms
Data Sheet MW005-Series Power Modules:
April 1999 36 Vdc to 75 Vdc Inputs; 5 W
Tyco Electronics Corp. 5
Electrical Specifications (continued)
Table 3. Isolation Specifications
General Specifications
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions for further information.
Parameter Device Min Typ Max Unit
Isolation Capacitance All — 1200 — pF
Isolation Resistance All 10 — — MΩ
Parameter Device Min Typ Max Unit
Calculated MTBF
(at 80% of IO, max; TC = 40 °C) All 8,800,000 hours
Weight All — — 28 (1.0) g (oz.)
Parameter Device Symbol Min Typ Max Unit
Output Overvoltage Protection (clamp) MW005A
MW005B
MW005C
MW005BK
MW005CL
VO, clamp
VO, clamp
VO, clamp
VO1, clamp
VO2, clamp
VO1, clamp
VO2, clamp
—
—
—
—
—
—
—
6.0
14
17
16
–16
19
–19
7.0
16
19
18
–18
21
–21
V
V
V
V
V
V
V
MW005-Series Power Modules: Data Sheet
36 Vdc to 75 Vdc Inputs; 5 W April 1999
66 Tyco Electronics Corp.
Characteristic Curves
8-688(C).a
Figure 1. MW005-Series Typical Input
Characteristic with IO = IO, max and
TA = 25 °C (Arrows Indicate Hysteresis)
8-460(C).a
Figure 2. MW005A Typical Output Voltage
Variations Over Operating Ambient
Temperature Range
8-614(C).a
Figure 3. MW005B Typical Output Voltage
Variations Over Operating Ambient
Temperature Range
8-615(C).a
Figure 4. MW005C Typical Output Voltage
Variations Over Operating Ambient
Temperature Range
INPUT VOLTAGE, V
I
(V)
INPUT CURRENT, I
I
(A)
0.5
0.4
0.3
0.2
0.1
0.001030507080604020
5.15
5.10
5.05
5.00
4.95
4.90
4.85
4.80 –50 –25 0 25 50 75 100 125–75
OPERATING AMBIENT TEMPERATURE, T
A
(
°
C)
OUTPUT VOLTAGE, V
O
(V)
V
O, set
= 5.1 V
V
O, set
= 5.0 V
V
O, set
= 4.9 V
12.36
12.24
12.12
12.00
11.88
11.76
11.64
11.52 –50 –25 0 25 50 75 100 125
OPERATING AMBIENT TEMPERATURE, T
A
(
°
C)
OUTPUT VOLTAGE, V
O
(V)
–75
V
O, set
= 12.25 V
V
O, set
= 12.0 V
V
O, set
= 11.75 V
15.45
15.30
15.15
15.00
14.85
14.70
14.55
14.40 –50 –25 0 25 50 75 100 125
OPERATING AMBIENT TEMPERATURE, T
A
(
°
C)
OUTPUT VOLTAGE, V
O
(V)
–75
V
O, set
= 15.3 V
V
O, set
= 15.0 V
V
O, set
= 14.7 V
Data Sheet MW005-Series Power Modules:
April 1999 36 Vdc to 75 Vdc Inputs; 5 W
Tyco Electronics Corp. 7
Characteristic Curves (continued)
8-500(C).a
Figure 5. MW005BK Typical VO1 vs. IO1 Regulation
with VI = 48 V and TA = 25 °C
8-502(C).a
Figure 6. MW005BK Typical VO2 vs. IO2 Regulation
with VI = 48 V and TA = 25 °C
8-501(C).a
Figure 7. MW005CL Typical VO1 vs. IO1 Regulation
with VI = 48 V and TA = 25 °C
8-503(C).a
Figure 8. MW005CL Typical VO2 vs. IO2 Regulation
with VI = 48 V and TA = 25 °C
OUTPUT CURRENT, IO1 (A)
OUTPUT VOLTAGE, VO1 (V)
13.0
12.5
12.0
11.0
0.0 0.02 0.05 0.10 0.15 0.25
11.5
0.20 0.21
IO2 = 210 mA
IO2 = 50 mA
IO2 = 10 mA
IO2 = 20 mA
OUTPUT CURRENT, I
O2
(A)
OUTPUT VOLTAGE, V
O2
(V)
–11.0
–11.5
–12.0
–13.0
0.0 0.02 0.05 0.10 0.15
–12.5
0.20 0.21 0.25
I
O1
= 10 mA
I
O1
= 50 mA
I
O1
= 210 mA
I
O1
= 20 mA
16.0
15.5
15.0
14.5
14.0 0.01 0.05 0.10 0.15 0.17 0.20
OUTPUT CURRENT, I
O1
(A)
OUTPUT VOLTAGE, V
O1
(V)
I
O2
= 8 mA
I
O2
= 170 mA
I
O2
= 17 mA
–14.0
–14.5
–15.0
–15.5
–16.0 0.01 0.05 0.10 0.15 0.17 0.20
OUTPUT CURRENT, I
O2
(A)
OUTPUT VOLTAGE, V
O2
(V)
I
O1
= 8 mA
I
O1
= 170 mA
I
O1
= 17 mA
MW005-Series Power Modules: Data Sheet
36 Vdc to 75 Vdc Inputs; 5 W April 1999
88 Tyco Electronics Corp.
Characteristic Curves (continued)
8-689(C).a
Figure 9. MW005A Typical Output Characteristic
with VI = 48 V and TA = 25 °C
8-451(C).a
Figure 10. MW005B Typical Output Characteristic
with VI = 48 V and TA = 25 °C
8-456(C).a
Figure 11. MW005C Typical Output Characteristic
with VI = 48 V and TA = 25 °C
8-492(C).a
Figure 12. MW005BK Typical Output Characteris-
tics (VO1 vs. IO1) with VI = 48 V and
TA = 25 °C
OUTPUT CURRENT, I
O
(A)
OUTPUT VOLTAGE, V
O
(V)
6
5
4
0
0.0 0.5 1.0 1.5
3
2.0 2.5
2
1
OUTPUT CURRENT, IO (A)
OUTPUT VOLTAGE, VO (V)
16
14
12
00.0 0.2 0.4 0.6 0.8 1.4
10
1.0 1.2
8
6
4
2
OUTPUT CURRENT, IO (A)
OUTPUT VOLTAGE, VO (V)
20
15
10
5
00.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
OUTPUT CURRENT, I
O1
(V)
OUTPUT VOLTAGE, V
O1
(V)
14
12
10
8
6
4
2
0
0.0 0.2 0.4 0.6 0.8 1.0
I
O2
= 210 mA I
O2
= 20 mA
Data Sheet MW005-Series Power Modules:
April 1999 36 Vdc to 75 Vdc Inputs; 5 W
Tyco Electronics Corp. 9
Characteristic Curves (continued)
8-494(C).a
Figure 13. MW005BK Typical Output Characteris-
tics (VO2 vs. IO2) with VI = 48 V and
TA = 25 °C
8-493(C).a
Figure 14. MW005CL Typical Output Characteris-
tics (VO1 vs. IO1) with VI = 48 V and
TA = 25 °C
8-495(C).a
Figure 15. MW005CL Typical Output Characteris-
tics (VO2 vs. IO2) with VI = 48 V and
TA = 25 °C
8-687(C).a
Figure 16. MW005A, B, C Typical Converter Effi-
ciency as a Function of Output Current
with VI = 48 V and TA = 25 °C
OUTPUT CURRENT, IO2 (A)
OUTPUT VOLTAGE, VO2 (V)
0
–2
–4
–6
–140.0 0.2 0.4 0.6 0.8 1.0
–8
–10
–12
IO1 = 20 mA
IO1 = 0.21 A
20
15
10
5
00.0 0.2 0.4 0.6 0.8 1.0
OUTPUT CURRENT, I
O1
(V)
OUTPUT VOLTAGE, V
O1
(V)
I
O2
= 170 mA I
O2
= 17 mA
0
–5
–10
–15
–200.0 0.2 0.4 0.6 0.8 1.0
OUTPUT CURRENT, I
O2
(A)
OUTPUT VOLTAGE, V
O2
(V)
I
O1
= 170 mA
I
O1
= 17 mA
OUTPUT POWER, PO (W)
EFFICIENCY, (%)
84
82
80
78
76
74
72
0 1.0 2.0 3.0 4.0 5.0
MW005C
MW005A
MW005B
MW005-Series Power Modules: Data Sheet
36 Vdc to 75 Vdc Inputs; 5 W April 1999
1010 Tyco Electronics Corp.
Characteristic Curves (continued)
8-686(C).a
Figure 17. MW005BK, CL Typical Converter Effi-
ciency as a Function of Output Current
with VI = 48 V and TA = 25 °C
8-316(C).a
Figure 18. MW005A Typical Output Voltage Wave-
form for a Step Load Change from
50% to 25% of IO, ma x with VI = 48 V and
TA = 25 °C
8-454(C).a
Figure 19. MW005B Typical Output Voltage Wave-
form for a Step Load Change from
50% to 25% of IO, ma x with VI = 48 V and
TA = 25 °C
8-459(C).a
Figure 20. MW005C Typical Output Voltage Wave-
form for a Step Load Change from
50% to 25% of IO, ma x with VI = 48 V and
TA = 25 °C
OUTPUT POWER, P
O
(W)
EFFICIENCY, (%)
82
80
78
76
74
72
70
0 1.0 2.0 3.0 4.0 5.0
MW005BK
MW005CL
5.10 V
0.25 A
0 A
TIME, t (1 ms/div)
OUTPUT VOLTAGE,
VO (V) (50 mV/div)
OUTPUT CURRENT,
IO (A) (0.5 A/div)
5.05 V
5.00 V
0.5 A ∆IO
∆t1 A
10 µs
=
12.10 V
0.2 A
0.1 A
0 A
TIME, t (500 µs/div)
OUTPUT VOLTAGE,
V
O
(V)
(50 mV/div)
OUTPUT CURRENT,
I
O
(A)
(0.1 A/div)
12.05 V
12.00 V
∆I
O
∆t1 A
10 µs
=
15.10 V
0.1 A
0.8 A
0 A
TIME, t (500 µs/div)
OUTPUT VOLTAGE,
V
O
(V)
(50 mV/div)
OUTPUT CURRENT,
I
O
(A)
(0.1 A/div)
15.05 V
15.00 V
0.2 A ∆I
O
∆t1 A
10 µs
=
Data Sheet MW005-Series Power Modules:
April 1999 36 Vdc to 75 Vdc Inputs; 5 W
Tyco Electronics Corp. 11
Characteristic Curves (continued)
8-315(C).a
Figure 21. MW005A Typical Output Voltage Wave-
form for a Step Load Change from
50% to 75% of IO, ma x with VI = 48 V and
TA = 25 °C
8-453(C).a
Figure 22. MW005B Typical Output Voltage Wave-
form for a Step Load Change from
50% to 75% of IO, ma x with VI = 48 V and
TA = 25 °C
8-458(C).a
Figure 23. MW005C Typical Output Voltage Wave-
form for a Step Load Change from
50% to 75% of IO, ma x with VI = 48 V and
TA = 25 °C
Test Configurations
8-489(C)
Note: Input reflected-ripple current is measured with a simulated
source impedance of 12 µH. Capacitor CS offsets possible
battery impedance. Current is measured at the input of the
module.
Figure 24. MW005-Series Input Reflected-Ripple
Test Setup
5.0 V
0.75 A
0.5 A
0 A
TIME, t (1 ms/div)
OUTPUT VOLTAGE,
V
O
(V)
(50 mV/div)
OUTPUT CURRENT,
I
O
(A)
(0.5 A/div)
4.95 V
4.9 V
∆I
O
∆t1 A
10 µs
=
∆I
O
∆t1 A
10 µs
=
11.95 V
0.1 A
0 A
TIME, t (500 µs/div)
OUTPUT VOLTAGE,
V
O
(V)
(50 mV/div)
OUTPUT CURRENT,
I
O
(A)
(0.1 A/div)
11.90 V
0.3 A
0.2 A
12.00 V
15.00 V
0.2 A
0.1 A
0 A
TIME, t (500 µs/div)
OUTPUT VOLTAGE,
V
O
(V)
(50 mV/div)
OUTPUT CURRENT,
I
O
(A)
(0.1 A/div)
14.95 V
14.90 V
0.25 A ∆I
O
∆t1 A
10 µs
=
TO OSCILLOSCOPE
12 µH
C
S
220 µF
IMPEDANCE < 0.1 Ω
@ 20 °C, 100 kHz
V
I
(+)
V
I
(–)
BATTERY
CURRENT
PROBE
L
TEST
MW005-Series Power Modules: Data Sheet
36 Vdc to 75 Vdc Inputs; 5 W April 1999
1212 Tyco Electronics Corp.
Test Configurations (continued)
8-513(C)
Note: Use a 0.1 µF ceramic capacitor. Scope measurement should
be made using a BNC socket. Position the load between
50 mm and 75 mm (2 in. and 3 in.) from the module.
Figure 25. MW005-Series Peak-to-Peak Output
Noise Measurement Test Setup
8-204(C)
Note: All measurements are taken at the module terminals. When
socketing, place Kelvin connections at module terminals to
avoid measurement errors due to socket contact resistance.
Figure 26. MW005A, B, C Output Voltage and
Efficiency Measurement Test Setup
8-506(C)
Note: All measurements are taken at the module terminals. When
socketing, place Kelvin connections at module terminals to
avoid measurement errors due to socket contact resistance.
Figure 27. MW005BK, CL Output Voltage and
Efficiency Measurement Test Setup
Design Considerations
Input Reflected Ripple
An internal aluminum electrolytic input capacitor is
used for filtering; therefore, input ripple increases as
temperature decreases. There is approximately two
times more ripple at 0 °C than at 25 °C and eight times
more ripple at –40 °C than at 25 °C. The pow er module
functions properly down to –40 °C with no additional
filtering. If lower ripple comparable to that at 25 °C is
needed at low temperatures, an external capacitor
across the input with an impedance of 0.5 Ω at 100 kHz
over the desired temperature range is recommended.
See Figure 24 for the test setup.
Input or Output Voltage Reversal
CAUTION: Applying a reverse voltage across the
module input or output can damage the
module.
VO(+)
VO(–)
RESISTIVE
LOAD
SCOPE
0.1 µF
COPPER STRIP
V
I
(+)
V
I
(–)
V
O
(+)
V
O
(–)
I
I
I
O
SUPPLY
CONTACT RESISTANCE
CONTACT AND
DISTRIBUTION LOSSES
LOAD
ηVO+() VO–()()–[]IO
VI+() VI–()()–[]II
-------------------------------------------------------
100×=%
SUPPLY
VI(+)
VI(–)
VO1
VO2
II
CONTACT
RESISTANCE CONTACT AND
DISTRIBUTION LOSSES
LOAD
COM
LOAD
η
2
Σ
J1=VOJ +() VCOM–[]IOJ
VI+() VI–()–[]II
-------------------------------------------------------------------------- 100×=%
Data Sheet MW005-Series Power Modules:
April 1999 36 Vdc to 75 Vdc Inputs; 5 W
Tyco Electronics Corp. 13
Safety Considerations
For safety-agency approval of the system in which the
power module is used, the power module must be
installed in compliance with the spacing and separation
requirements of the end-use safety agency standard,
i.e.,
UL
1950,
CSA
C22.2 No. 950-95, and VDE 0805
(EN60950, IEC950).
If the input source is non-SELV (ELV or a hazardous
voltage greater than 60 Vdc and less than or equal to
75 Vdc), for the module's output to be considered
meeting the requirements of safety extra-low voltage
(SELV), all of the following must be true:
■The input source is to be provided with reinforced
insulation from any other hazardous voltages, includ-
ing the ac mains; and
■One VI pin and one V O pin are to be grounded or both
the input and output pins are to be kept floating; and
■The input pins of the module are not operator acces-
sible; and
■Another SELV reliability test is conducted on the
whole system, as required by the saf ety agencies, on
the combination of supply source and the subject
module to verify that under a single fault, hazardous
voltages do not appear at the module's output.
Note: Do not ground either of the input pins of the
module without grounding one of the output
pins. This may allow a non-SELV voltage to
appear between the output pins and ground.
The power module has extra-low v oltage (ELV) outputs
when all inputs are ELV.
The input to these units is to be provided with a maxi-
mum 5 A normal-blow fuse in the ungrounded lead.
Feature Descriptions
Overcurrent Protection
To provide protection in a fault (output overload) condi-
tion, the unit is equipped with internal current-limiting
and can endure current limiting for an unlimited dura-
tion. At the point of current-limit inception, the unit
shifts from voltage control to current control. If the out-
put voltage is pulled very low during a severe fault, the
current-limit circuit can exhibit either foldback or tailout
characteristics (output current decrease or increase).
The unit operates normally once the output current is
brought back into its specified range.
Output Overvoltage Protection
The output overvoltage clamp consists of control cir-
cuitry, independent of the primary regulation loop, that
monitors the voltage on the output terminals. The con-
trol loop of the clamp has a higher voltage set point
than the primary loop (see Feature Specifications
table). This provides a redundant voltage control that
reduces the risk of output overvoltage.
Thermal Considerations
To maintain the full power rating at ambient tempera-
tures above 70 °C (TA > 70 °C), add an external capac-
itor across the input close to the power module input
leads. Use an 80 V capacitor with a minimum ripple
current rating of 160 mArms and maximum impedance
of 1.0 Ω at 105 °C and 100 kHz. Otherwise, derate the
output power as shown in Figure 28.
8-548(C)
Figure 28. Thermal Derating Cur ve
AMBIENT TEMPERATURE, T
A
(°C)
OUTPUT POWER, P
O
(W)
5.0
4.5
4.0
0.0
–40
1.0
3.5
3.0
2.5
2.0
1.5
0.5
–20 0 20 40 8570
WITH EXTERNAL
CAPACITOR
WITHOUT EXTERNAL
CAPACITOR
MW005-Series Power Modules: Data Sheet
36 Vdc to 75 Vdc Inputs; 5 W April 1999
14 Tyco Electronics Corp.
Outline Diagrams
Dimensions are in millimeters and (inches).
Tolerances, unless otherwise indicated: x.x ± 0.5 mm (0.02 in.), x.xx ± 0.25 mm (0.010 in.)
Single-Output Module
T op View
Side View
Bottom View
8-317(C).c
5.08
(0.200)
15.2
(0.60) 20.32
(0.800)
7.62
(0.300)
12.70
(0.500)
11.4
(0.45)
11.7 (0.46)
MAX
2.79 (0.110)
0.51 (0.020)
0.79 ± 0.08 (0.031 ± 0.003) DIA
ROUND PIN (TYP)
50.8 (2.00) MAX
–
+
–
+
Lucent
MW005A
DC-DC Power Module
IN: DC 48V, 0.13A OUT: DC 5V, 1A
MADE IN USA
IN OUT
U.S. Patent 4903182
27.9 (1.10)
MAX
TUV Rheinland
Data Sheet MW005-Series Power Modules:
April 1999 36 Vdc to 75 Vdc Inputs; 5 W
Tyco Electronics Corp. 15
Outline Diagrams (continued)
Dimensions are in millimeters and (inches).
Tolerances, unless otherwise indicated: x.x ± 0.5 mm (0.02 in.), x.xx ± 0.25 mm (0.010 in.)
Dual-Output Module
T op View
Side View
Bottom View
8-356(C)
11.7 (0.46)
MAX
2.79 (0.110)
0.51 (0.020)
0.79 ± 0.08 (0.031 ± 0.003) DIA
ROUND PIN (TYP)
50.8 (2.00) MAX
27.9 (1.10)
MAX
–
+
MADE IN USA
IN
– 12V
MW005BK
DC-DC Power Module
IN: DC 48V, 0.13A OUT2: DC –12V, 0.21A
OUT: DC 12V, 0.21A
Lucent
COM
+ 12V
U.S Patent 4903182
5.08
(0.200)
15.2
(0.60) 20.32
(0.800)
7.62
(0.300)
2.54
(0.100) 12.70
(0.500)
11.4
(0.45)
TUV Rheinland
MW005-Series Power Modules: Data Sheet
36 Vdc to 75 Vdc Inputs; 5 W April 1999
16 Tyco Electronics Corp.
Recommended Hole Patterns
Component-side footprint.
Dimensions are in millimeters and (inches).
Single-Output Module
8-317(C).c
Dual-Output Module
8-356(C)
MODULE OUTLINE
5.08
(0.200)
7.62
(0.300)
15.2
(
0.60
)
20.32
(
0.800
)
12.70
(0.500)
11.4
(0.45)
MODULE OUTLINE
5.08
(0.200)
7.62
(0.300)
2.54
(0.100)
15.2
(
0.60
)
20.32
(
0.800
)
12.70
(0.500)
11.4
(0.45)
Data Sheet MW005-Series Power Modules:
April 1999 36 Vdc to 75 Vdc Inputs; 5 W
Tyco Electronics Corp. 17
Ordering Information
Table 4. Device Codes
Optional features maybe ordered using device code suffixes shown below.
Table 5. Device Options
Input V oltage Output V oltage Output Power Device Code Comcode
36 V—75 V 5 V 5 W MW005A 106233901
36 V—75 V 12 V 5 W MW005B 106233919
36 V—75 V 15 V 5 W MW005C 106233927
36 V—75 V ±12 V 5 W MW005BK 106233935
36 V—75 V ±15 V 5 W MW005CL 106233943
Option Device Code Suffix
Standard long pins: 5.84 mm ± 0.51 mm
(0.230 in. ± 0.020 in.) –SLP
Pin lengths: 3.68 mm ± 0.25 mm
(0.145 in. ± 0.010 in.) 6
MW005-Series Power Modules: Data Sheet
36 Vdc to 75 Vdc Inputs; 5 W April 1999
1818 Tyco Electronics Corp.
Notes
Data Sheet MW005-Series Power Modules:
April 1999 36 Vdc to 75 Vdc Inputs; 5 W
Tyco Electronics Corp. 19
Notes
MW005-Series Power Modules: Data Sheet
36 Vdc to 75 Vdc Inputs; 5 W April 1999
Tyco Electronics Power Systems, Inc.
3000 Skyline Drive, Mesquite, TX 75149, USA
+1-800-526-7819 FAX: +1-888-315-5182
(Outside U.S.A.: +1-972-284-2626, FAX: +1-972-284-2900)
http://power.tycoelectronics.com
Tyco Electronics Corporation reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application.
No rights under any patent accompany the sale of any such product(s) or information.
© 2001 Tyco Electronics Corporation, Harrisburg, PA. All International Rights Reserved.
Printed in U.S.A.
April 1999
DS99-115EPS (Replaces DS96-213EPS) Printed on
Recycled Paper
