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PDF JAW050F Data sheet ( Hoja de datos )
| Número de pieza | JAW050F | |
| Descripción | dc-dc Converters / Power Modules | |
| Fabricantes | Lineage Power | |
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Data Sheet
April 2008
JAW050F and JAW075F Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 3.3 Vdc Output; 33 W to 50 W
Features
The JAW Series Power Modules use surface-mount technol-
ogy and deliver efficient and compact dc-dc conversion.
Applications
n Distributed power architectures
n Communications equipment
n Computer equipment
Options
n Heat sinks available for extended operation
n Choice of remote on/off logic configuration
n Choice of short lead lengths
Description
n Small size: 61.0 mm x 57.9 mm x 12.7 mm
(2.40 in. x 2.28 in. x 0.50 in.)
n High power density
n High efficiency: 79.5% typical
n Low output noise
n Constant frequency
n Industry-standard pinout
n Metal case
n 2:1 input voltage range
n Overtemperature, overvoltage, and overcurrent
protection
n Remote on/off and remote sense
n Adjustable output voltage
n Case ground pin
n Manufacturing facilities registered against the
ISO*9000 series standards
n UL† 60950 Recognized, CSA‡ C22.2 No. 60950-00
Certified, and VDE § 0805 (IEC** 60950, 4th Edi-
tion) Licensed
n CE mark meets 73/23/EEC and 93/68/EEC
directives††
The JAW050F and JAW075F Power Modules are dc-dc converters that operate over an input voltage range of
36 Vdc to 75 Vdc and provide a regulated dc output. The outputs are fully isolated from the inputs, allowing
versatile polarity configurations and grounding connections. The modules have maximum power ratings from
33 W to 50 W at a typical full-load efficiency of 79.5%.
The sealed modules offer a metal baseplate for improved thermal performance. Threaded-through holes are
provided to allow easy mounting or addition of a heat sink for high-temperature applications. The standard
feature set includes remote sensing, output trim, and remote on/off for convenient flexibility in distributed power
applications.
* ISO is a registered trademark of the International Organization for Standardization.
† UL is a registered trademark of Underwriters Laboratories, Inc.
‡ CSA is a registered trademark of Canadian Standards Association.
§ VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
** IEC is a trademark of International Elektrotechniker Commission.
†† This product is intended for integration into end-use equipment. All the required procedures for CE marking of end-use equipment should
be followed. (The CE mark is placed on selected products.)
1 page  
Data Sheet
April 2008
JAW050F and JAW075F Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 3.3 Vdc Output; 33 W to 50 W
Characteristic Curves
The following figures provide typical characteristics for the power modules. The figures are identical for both on/off
configurations.
1.4
1.2
IO = 10 A
IO = 5 A
IO = 0.5 A
1.0
0.8
0.6
0.4
0.2
0.0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75
INPUT VOLTAGE, VI (V)
8-3338 (F)
Figure 1. Typical JAW050F Input Characteristics at
Room Temperature
82
81
80
79
78
77
76
75
74
73
72
2
3
VI = 36 V
VI = 55 V
VI = 75 V
45678
OUTPUT CURRENT, IO (A)
9 10
8-3340 (F)
Figure 3. Typical JAW050F Efficiency vs. Output
Current at Room Temperature
2.0
1.8
IO = 15 A
IO = 8 A
1.6 IO = 1.5 A
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75
INPUT VOLTAGE, VI (V)
8-3339 (F)
Figure 2. Typical JAW075F Input Characteristics at
Room Temperature
81
80
79
78
77
76
75
74 VI = 36 V
73
VI = 55 V
VI = 75 V
72
71
2 3 4 5 6 7 8 9 10 11 12 13 14 15
OUTPUT CURRENT, IO (A)
8-3341 (F)
Figure 4. Typical JAW075F Efficiency vs. Output
Current at Room Temperature
Lineage Power
5
5 Page 
Data Sheet
April 2008
JAW050F and JAW075F Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 3.3 Vdc Output; 33 W to 50 W
Thermal Considerations (continued)
Heat Transfer with Heat Sinks (continued)
The temperature at this location should not exceed
100 °C. The output power of the module should not
exceed the rated power for the module as listed in the
Ordering Information table.
Although the maximum case temperature of the power
modules is 100 °C, you can limit this temperature to a
lower value for extremely high reliability.
Heat Transfer Without Heat Sinks
Increasing airflow over the module enhances the heat
transfer via convection. Figures 21 and 22 show the
maximum power that can be dissipated by the module
without exceeding the maximum case temperature ver-
sus local ambient temperature (TA) for natural convec-
tion through 4 m/s (800 ft./min.). Note that the thermal
performance is orientation dependent. Longitudinal ori-
entation occurs when the long direction of the module
is parallel to the airflow, whereas transverse orientation
occurs when the short direction of the module is paral-
lel to the airflow.
Note that the natural convection condition was mea-
sured at 0.05 m/s to 0.1 m/s (10 ft./min. to 20 ft./min.);
however, systems in which these power modules may
be used typically generate natural convection airflow
rates of 0.3 m/s (60 ft./min.) due to other heat-dissipat-
ing components in the system. The use of Figure 21 is
shown in the following example.
Example
What is the minimum airflow necessary for a JAW075F
operating at VI = 55 V, an output current of 15 A, longi-
tudinal orientation, and a maximum ambient tempera-
ture of 55 °C?
Solution
Given: VI = 55 V
IO = 15 A
TA = 55 °C
Determine PD (Use Figure 20.):
PD = 12.5 W
Determine airflow (v) (Use Figure 21.):
v = 1.6 m/s (320 ft./min.)
10
9
8
7
6
5
4
3
2
0
1
VI = 75 V
VI = 55 V
VI = 36 V
2345678
OUTPUT CURRENT, IO (A)
9 10
8-3348 (F)
Figure 19. JAW050F Power Dissipation vs. Output
Current at 25 °C
14
13
12
11
10
9
8
7
6
5
4
3
2
1
2
VI = 75 V
VI = 55 V
VI = 36 V
3 4 5 6 7 8 9 10 11 12 13 14 15
OUTPUT CURRENT, IO (A)
8-3349 (F)
Figure 20. JAW075F Power Dissipation vs. Output
Current at 25 °C
Lineage Power
11
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