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PDF JW075A Data sheet ( Hoja de datos )
| Número de pieza | JW075A | |
| Descripción | Power Modules | |
| Fabricantes | Tyco Electronics | |
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Data Sheet
July 1999
www.DataSheet4U.com
JW050A, JW075A, JW100A, JW150A Power Modules:
dc-dc Converters; 36 to 75 Vdc Input, 5 Vdc Output; 50 W to 150 W
Features
The JW050A, JW075A, JW100A, and JW150A Power Modules
use advanced, surface-mount technology and deliver high-
quality, efficient, and compact dc-dc conversion.
Applications
s Distributed power architectures
s Workstations
s Computer equipment
s Communications equipment
Options
s Heat sinks available for extended operation
s Choice of remote on/off logic configuration
Description
s Small size: 61.0 mm x 57.9 mm x 12.7 mm
(2.40 in. x 2.28 in. x 0.50 in.)
s High power density
s High efficiency: 84% typical
s Low output noise
s Constant frequency
s Industry-standard pinout
s Metal baseplate
s 2:1 input voltage range
s Overtemperature protection (100 W and 150 W only)
s Overcurrent and overvoltage protection
s Remote sense
s Remote on/off
s Adjustable output voltage: 60% to 110% of VO, nom
s Case ground pin
s ISO9001 Certified manufacturing facilities
s UL* 1950 Recognized, CSA† C22.2 No. 950-95
Certified, and VDE 0805 (EN60950, IEC950)
Licensed
s CE mark meets 73/23/EEC and 93/68/EEC
directives‡
* UL is a registered trademark of Underwriters Laboratories, Inc.
† CSA is a registered trademark of Canadian Standards Assn.
‡ 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.)
The JW050A, JW075A, JW100A, and JW150A Power Modules are dc-dc converters that operate over an input
voltage range of 36 Vdc to 75 Vdc and provide a precisely regulated dc output. The outputs are fully isolated
from the inputs, allowing versatile polarity configurations and grounding connections. The modules have maxi-
mum power ratings from 50 W to 150 W at a typical full-load efficiency of 84%.
The sealed modules offer a metal baseplate for excellent thermal performance. Threaded-through holes are pro-
vided 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.
1 page  
Data Sheet
July 1999
JW050A, JW075A, JW100A, JW150A Power Modules:
dc-dc Converters; 36 to 75 Vdc Input, 5 Vdc Output; 50 W to 150 W
www.DataSheet4U.com
Characteristic Curves
The following figures provide typical characteristics for the power modules. The figures are identical for both on/off
configurations.
2.0
1.5
1.0
0.5
0.0
0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 72
INPUT VOLTAGE, VI (V)
8-1159 (C)
Figure 1. Typical JW050A Input Characteristics at
Room Temperature
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 72
INPUT VOLTAGE, VI (V)
8-1160 (C)
Figure 3. Typical JW100A Input Characteristics at
Room Temperature
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0 10 20 30 40 50 60 70 80
INPUT VOLTAGE, VI (V)
8-1131 (C)
Figure 2. Typical JW075A Input Characteristics at
Room Temperature
6
5
4
3
2
1
0
0 10 20 30 40 50 60 70 80
INPUT VOLTAGE, VI (V)
8-1137 (C)
Figure 4. Typical JW150A Input Characteristics at
Room Temperature
Tyco Electronics Corp
5
5 Page 
Data Sheet
July 1999
JW050A, JW075A, JW100A, JW150A Power Modules:
dc-dc Converters; 36 to 75 Vdc Input, 5 Vdc Output; 50 W to 150 W
www.DataSheet4U.com
Feature Descriptions (continued)
Output Voltage Set-Point Adjustment (Trim)
Remote Sense
Remote sense minimizes the effects of distribution
losses by regulating the voltage at the remote-sense
connections. The voltage between the remote-sense
pins and the output terminals must not exceed the out-
put voltage sense range given in the Feature Specifica-
tions table, i.e.:
[VO(+) – VO(–)] – [SENSE(+) – SENSE(–)] ≤ 0.5 V
The voltage between the VO(+) and VO(–) terminals
must not exceed the minimum value of the output over-
voltage protection. This limit includes any increase in
voltage due to remote-sense compensation and output
voltage set-point adjustment (trim). See Figure 21.
If not using the remote-sense feature to regulate the
output at the point of load, then connect SENSE(+) to
VO(+) and SENSE(–) to VO(–) at the module.
Although the output voltage can be increased by both
the remote sense and by the trim, the maximum
increase for the output voltage is not the sum of both.
The maximum increase is the larger of either the
remote sense or the trim. Consult the factory if you
need to increase the output voltage more than the
above limitation.
The amount of power delivered by the module is
defined as the voltage at the output terminals multiplied
by the output current. When using remote sense and
trim, the output voltage of the module can be
increased, which at the same output current would
increase the power output of the module. Care should
be taken to ensure that the maximum output power of
the module remains at or below the maximum rated
power.
SENSE(+)
SENSE(–)
SUPPLY II
CONTACT
RESISTANCE
VI(+)
VI(–)
VO(+)
VO(–)
IO LOAD
CONTACT AND
DISTRIBUTION LOSSES
8-651 (C).m
Figure 21. Effective Circuit Configuration for
Single-Module Remote-Sense Operation
Output voltage trim allows the user to increase or
decrease the output voltage set point of a module. This
is accomplished by connecting an external resistor
between the TRIM pin and either the SENSE(+) or
SENSE(–) pins. The trim resistor should be positioned
close to the module.
If not using the trim feature, leave the TRIM pin open.
With an external resistor between the TRIM and
SENSE(–) pins (Radj-down), the output voltage set point
(VO, adj) decreases (see Figure 22). The following equa-
tion determines the required external-resistor value to
obtain a percentage output voltage change of ∆%.
R adj-down
=
100
-∆----%----
–
2
kΩ
The test results for this configuration are displayed in
Figure 23. This figure applies to all output voltages.
With an external resistor connected between the TRIM
and SENSE(+) pins (Radj-up), the output voltage set
point (VO, adj) increases (see Figure 24).
The following equation determines the required exter-
nal-resistor value to obtain a percentage output voltage
change of ∆%.
R adj-up
=
VO(100 + ∆%)
-------1----.-2----2---5----∆----%-----------
–
(---1---0----0---∆-+---%---2---∆----%------)
kΩ
The test results for this configuration are displayed in
Figure 25.
The voltage between the VO(+) and VO(–) terminals
must not exceed the minimum value of the output over-
voltage protection. This limit includes any increase in
voltage due to remote-sense compensation and output
voltage set-point adjustment (trim). See Figure 21.
Although the output voltage can be increased by both
the remote sense and by the trim, the maximum
increase for the output voltage is not the sum of both.
The maximum increase is the larger of either the
remote sense or the trim. Consult the factory if you
need to increase the output voltage more than the
above limitation.
The amount of power delivered by the module is
defined as the voltage at the output terminals multiplied
by the output current. When using remote sense and
trim, the output voltage of the module can be
increased, which at the same output current would
increase the power output of the module. Care should
be taken to ensure that the maximum output power of
the module remains at or below the maximum rated
power.
Tyco Electronics Corp
11
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