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MH005 Schematic ( PDF Datasheet ) - Tyco

Teilenummer MH005
Beschreibung Power Modules
Hersteller Tyco
Logo Tyco Logo 




Gesamt 16 Seiten
MH005 Datasheet, Funktion
Data Sheet
December 1999
MH005-Series Power Modules:
4.5 Vdc to 14 Vdc Input; 5 W
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The MH005-Series Power Modules use advanced, surface-
mount technology and deliver high-quality, compact,
dc-dc conversion at an economical price.
Applications
I Distributed power architectures
I Communication equipment
I Computer equipment
Options
Features
I Small size: 50.8 mm x 27.9 mm x 11.7 mm
(2.00 in. x 1.10 in. x 0.46 in.)
I Wide 3:1 input range
I Operating ambient temperature range:
–10 °C to +70 °C, no derating
I High reliability
I High efficiency: 73% typical
I Input-to-output isolation
I No external filtering required
I No heat sink required
I Overcurrent protection
I Output overvoltage protection
I PC board mountable
I UL* 1950 Recognized, CSAC22.2 No. 950-95
Certified, VDE0805 (EN60950, IEC950) Licensed
I Meets FCC Class A requirements
* UL is a registered trademark of Underwriters Laboratories, Inc.
CSA is a registered trademark of Canadian Standards Associa-
tion.
VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
I Long pins: 5.8 mm ± 0.5 mm (0.230 in. ± 0.020 in.)
I Metal case with case ground pin
Description
The MH005-Series Power Modules are dc-dc converters that operate over an input voltage range of 4.5 Vdc to
14 Vdc and provide precisely regulated dc outputs. The outputs are isolated from the inputs, allowing versatile
polarity configurations and grounding connections. The modules have maximum power ratings of 5 W with a
typical full-load efficiency of 73%.
The modules are PC board mountable and encapsulated in nonconductive cases. The modules are rated to full
load at 100 °C case temperature with no external filtering or heat sinking.






MH005 Datasheet, Funktion
MH005-Series Power Modules:
4.5 Vdc to 14 Vdc Input; 5 W
Data Sheet
December 1999
Characteristic Curves
2.5
1.05 VO, set
IO2 = 0.21 A
2.0 VO, set
1.5
1.0
0.5
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0
02
0.95 VO, set
0.01
IO2 = 0.1 A IO2 = 0.01 A
0.04 0.08 0.12 0.16
OUTPUT CURRENT, IO1 (A)
0.20
8-871(C).a
4 6 8 10 12
INPUT VOLTAGE, V I (V)
14 16
8-927(C)
Figure 3. MH005BK, CL Typical VO vs. IO
Regulation with VI = 5 V and TA = 25 °C
Figure 1. MH005-Series Typical Input
Characteristics with IO = IO, max and
TA = 25 °C
1.05
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
-10
0
VO = 1.02 VO, nom
VO = VO, nom
VO = 0.98 VO, nom
10 20 30 40 50 60 70 80 90 100
CASE TEMPERATURE, TC (˚C)
8-928(C)
1.00
0.80
MH005A
MH005B
0.60
MH005C
0.40
0.20
0.00
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
OUTPUT CURRENT, IO (A)
8-929(C)
Figure 4. MH005A, B, C Typical Output
Characteristics with VI = 5 V and
TA = 25 °C
Figure 2. MH005-Series Typical Output Voltage
Variation over Operating Case
Temperature
6 Tyco Electronics Corp.

6 Page









MH005 pdf, datenblatt
MH005-Series Power Modules:
4.5 Vdc to 14 Vdc Input; 5 W
Data Sheet
December 1999
Thermal Considerations (continued)
Case-to-Ambient Thermal Impedance
Basic Thermal Performance
The MH005-Series Power Modules are designed to
operate at full load in natural convection at 70 °C with-
out the use of an external heat sink (see Figure 21).
Higher ambient temperatures can be sustained by
increasing the airflow. As stated, this data is based on
a maximum case temperature of 100 °C and measured
in the test configuration of Figure 19. The location for
the temperature measurement is shown in Figure 20.
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6
5
NATURAL CONVECTION
4
0.5 ms-1(100 ft./min.)
1.0 ms-1(200 ft./min.)
3
2
1
0
0 10 20 30 40 50 60 70 80 90
AMBIENT TEMPERATURE (˚C)
8-898(C)
Figure 22 shows the case-to-ambient thermal imped-
ance, θca (°C/W) for the MH005 modules. This infor-
mation is used to predict the case temperature for a
given operating point and airflow by using the equation:
TC = PO 1-----η-----η-- θca + TA
where Tc is the case temperature (°C), PO is the output
power (W), η is the efficiency for the desired voltage
and load (see Characteristics Curves section), and TA
is the ambient inlet temperature (°C).
17
16
15
14
13
12
11
10
9
8
7
6
5
0 0.25 0.5 0.75 1.0 1.25 1.5 1.75 2.0
(50) (100) (150) (200) (250) (300) (350) (400)
AIR VELOCITY, ms -1 (ft./min.)
8-900(C).a
Figure 22. MH005A, B, C Case-to-Ambient Thermal
Impedance
Figure 21. MH005A, B, C Derating Curve
12 Tyco Electronics Corp.

12 Page





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