Lineage Power JAW050A1 Jaw050a and jaw075a power modules; dc-dc converters 36 vdc to 75 vdc input, 5 vdc output; 50 w to 75 w Datasheet

Data Sheet
April 2008
JAW050A and JAW075A Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Features
n
The JAW Series Power Modules use surface-mount technology and deliver efficient and compact dc-dc conversion.
n
High power density
n
High efficiency: 84% typical
n
Low output noise
n
Constant frequency
n
Industry-standard pinout
n
Metal case
n
2:1 input voltage range
n
Applications
n
n
Distributed power architectures
Establishing 5 V local power bus to feed
point-of-load converters in 48 V bus systems
Remote on/off and remote sense
n
Adjustable output voltage
n
Case ground pin
Options
n
Heat sinks available for extended operation
n
Choice of remote on/off logic configuration
n
Choice of short lead lengths
Overtemperature, overvoltage, and overcurrent
protection
n
n
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
Manufacturing facilities registered against the
ISO*9000 series standards
UL† 60950 Recognized, CSA‡ C22.2 No. 60950-00
Certified, and VDE § 0805 (IEC** 60950, 4th Edition) Licensed
CE mark meets 73/23/EEC and 93/68/EEC
directives††
Description
The JAW050A and JAW075A 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
50 W to 75 W at a typical full-load efficiency of 84%.
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.)
JAW050A and JAW075A Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Data Sheet
April 2008
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute 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
Symbol
Min
Max
Unit
VI
VI, trans
—
—
80
100
Vdc
V
Operating Case Temperature
(See Thermal Considerations section.)
TC
–40
100
°C
Storage Temperature
Tstg
–55
125
°C
I/O Isolation Voltage
—
—
1500
Vdc
Input Voltage:
Continuous
Transient (100 ms)
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Table 1. Input Specifications
Parameter
Symbol
Min
Typ
Max
Unit
VI
36
48
75
Vdc
II, max
II, max
—
—
—
—
3.0
3.5
A
A
II, max
II, max
—
—
—
—
1.7
2.6
A
A
Inrush Transient
i 2t
—
—
1.0
A2s
Input Reflected-ripple Current, Peak-to-peak
(5 Hz to 20 MHz, 12 µH source impedance;
see Figure 11.)
II
—
5
—
mAp-p
Input Ripple Rejection (120 Hz)
—
—
60
—
dB
Operating Input Voltage
Maximum Input Current:
VI = 0 V to 75 V; IO = IO, max:
JAW050A (See Figure 1.)
JAW075A (See Figure 2.)
VI = 36 V to 75 V; IO = IO, max:
JAW050A
JAW075A
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 6 A (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 further information.
2
Lineage Power
JAW050A and JAW075A Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Data Sheet
April 2008
Electrical Specifications (continued)
Table 2. Output Specifications
Device
Symbol
Min
Typ
Max
Unit
Output Voltage Set Point
(VI = 48 V; IO = IO, max; TC = 25 °C)
Parameter
All
VO, set
4.92
5.0
5.08
Vdc
Output Voltage
(Over all operating input voltage, resistive load,
and temperature conditions until end of life.
See Figure 13.)
All
VO
4.85
—
5.15
Vdc
Output Regulation:
Line (VI = 36 V to 75 V)
Load (IO = IO, min to IO, max)
Temperature (TC = –40 °C to +100 °C)
All
All
All
—
—
—
—
—
—
0.01
0.05
15
0.1
0.2
50
%VO
%VO
mV
Output Ripple and Noise Voltage
(See Figure 12.):
RMS
Peak-to-peak (5 Hz to 20 MHz)
All
All
—
—
—
—
—
—
40
150
mVrms
mVp-p
External Load Capacitance
All
—
0
—
*
µF
Output Current
(At IO < IO, min, the modules may exceed output
ripple specifications.)
JAW050A
JAW075A
IO
IO
0.5
0.5
—
—
10
15
A
A
Output Current-limit Inception
(VO = 90% of VO, nom)
JAW050A
JAW075A
IO, cli
IO, cli
—
—
12.0
18.0
14†
21†
A
A
Output Short-circuit Current (VO = 250 mV)
All
—
—
170
—
%IO, max
Efficiency (VI = 48 V; IO = IO, max; TC = 70 °C;
see Figure 13.)
JAW050A
JAW075A
η
η
—
—
84
84
—
—
%
%
All
—
—
320
—
kHz
All
All
—
—
—
—
5
300
—
—
%VO,
Switching Frequency
Dynamic Response
(ΔIO/Δt = 1 A/10 µs, VI = 48 V, TC = 25 °C;
tested without any load capacitance.):
Load Change from IO = 50% to 75% of IO, max:
Peak Deviation
Settling Time (VO < 10% of peak deviation)
Load Change from IO = 50% to 25% of IO, max:
Peak Deviation
Settling Time (VO < 10% of peak deviation)
set
µs
All
All
—
—
—
—
5
300
—
—
%VO,
set
µs
* Consult your sales representative or the factory.
† These are manufacturing test limits. In some situations, results may differ.
Table 3. Isolation Specifications
Parameter
Min
Typ
Max
Unit
Isolation Capacitance
—
2500
—
pF
Isolation Resistance
10
—
—
MΩ
Lineage Power
3
JAW050A and JAW075A Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Data Sheet
April 2008
General Specifications
Parameter
Min
Calculated MTBF (IO = 80% of IO, max; TC = 40 °C)
Weight
Typ
Max
Unit
100 (3.5)
g (oz.)
3,000,000
—
hours
—
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See the Feature Descriptions section for additional information.
Parameter
Remote On/Off Signal Interface
(VI = 0 V to 75 V; open collector or equivalent compatible;
signal referenced to VI(–) terminal):
JAWxxxA1 Preferred Logic:
Logic Low—Module On
Logic High—Module Off
JAWxxxA Optional Logic:
Logic Low—Module Off
Logic High—Module On
Logic Low:
At Ion/off = 1.0 mA
At Von/off = 0.0 V
Logic High:
At Ion/off = 0.0 µA
Leakage Current
Turn-on Time (See Figure 10.)
(IO = 80% of IO, max; VO within ±1% of steady state)
Output Voltage Adjustment:
Output Voltage Remote-sense Range
Output Voltage Set-point Adjustment Range (trim)
Output Overvoltage Protection
Overtemperature Protection
Symbol
Min
Typ
Max
Unit
Von/off
Ion/off
0
—
—
—
1.2
1.0
V
mA
Von/off
Ion/off
—
—
—
—
—
—
40
15
50
80
V
µA
ms
—
—
—
60
—
—
0.5
110
V
%VO, nom
VO, sd
5.9*
—
7.0*
V
TC
—
105
—
°C
* These are manufacturing test limits. In some situations, results may differ.
Solder, Cleaning, and Drying Considerations
Post solder cleaning is usually the final circuit-board assembly process prior to the electrical board testing. The
result of inadequate circuit-board cleaning and drying can affect both the reliability of a power module and the testability of the finished circuit-board assembly. For guidance on appropriate soldering, cleaning, and drying procedures, refer to the Board-Mounted Power Modules: Soldering and Cleaning Application Note (AP97-021EPS).
4
Lineage Power
JAW050A and JAW075A Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Data Sheet
April 2008
Characteristic Curves
The following figures provide typical characteristics for the power modules. The figures are identical for both on/off
configurations.
84
83
INPUT CURRENT, II (A)
1.6
IO = 10 A
IO = 5 A
IO = 0.5 A
1.4
1.2
1.0
0.8
0.6
0.4
EFFICIENCY, η (%)
1.8
81
80
79
78
VI = 36 V
VI = 55 V
VI = 75 V
77
76
0.2
0.0
0
82
75
74
3
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75
4
5
6
7
8
9
OUTPUT CURRENT, IO (A)
INPUT VOLTAGE, VI (V)
8-3329(F)
8-3327(F)
Figure 1. Typical JAW050A Input Characteristics at
Room Temperature
Figure 3. Typical JAW050A Efficiency vs. Output
Current at Room Temperature
85
84
IO = 15 A
IO = 7.5 A
IO = 1.5 A
2.0
1.5
1.0
83
82
81
VI = 36 V
VI = 55 V
VI = 75 V
80
79
78
77
0.5
0.0
0
EFFICIENCY, η (%)
INPUT CURRENT, II (A)
3.0
2.5
10
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75
4
5
6
7
8
9
10 11 12 13 14 15
OUTPUT CURRENT, IO (A)
INPUT VOLTAGE, VI (V)
8-3328(F)
Figure 2. Typical JAW075A Input Characteristics at
Room Temperature
Lineage Power
76
75
3
8-3330(F)
Figure 4. Typical JAW075A Efficiency vs. Output
Current at Room Temperature
5
JAW050A and JAW075A Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Data Sheet
April 2008
OUTPUT VOLTAGE, VO (V)
(100 mV/div)
Characteristic Curves (continued)
OUTPUT CURRENT, IO (A)
(1 A/div)
OUTPUT VOLTAGE, VO (V)
(50 mV/div)
IO = 1.0 A
IO = 7.5 A
7.5 A
IO = 15 A
TIME, t (200 μs/div)
8-3332(F)
Note: Tested without any load capacitance.
TIME, t (5 μs/div)
8-3331(F)
Note: See Figure 12 for test conditions.
OUTPUT CURRENT, IO (A)
(1 A/div)
OUTPUT CURRENT, IO (A)
(1 A/div)
OUTPUT VOLTAGE, VO (V)
(200 mV/div)
OUTPUT VOLTAGE, VO (V)
(200 mV/div)
Figure 5. Typical JAW075A Output Ripple Voltage
at Room Temperature and 48 Vdc Input
Figure 7. Typical JAW075A Transient Response to
Step Increase in Load from 50% to 75% of
Full Load at Room Temperature and
48 Vdc Input (Waveform Averaged to
Eliminate Ripple Component.)
2.5 A
5A
TIME, t (50 μs/div)
TIME, t (50 μs/div)
1-0097
1-0098
Note: Tested without any load capacitance.
Note: Tested without any load capacitance.
Figure 6. Typical JAW050A Transient Response to
Step Increase in Load from 50% to 75% of
Full Load at Room Temperature and
48 Vdc Input (Waveform Averaged to
Eliminate Ripple Component.)
Figure 8. Typical JAW050A Transient Response to
Step Decrease in Load from 50% to 25%
of Full Load at Room Temperature and
48 Vdc Input (Waveform Averaged to
Eliminate Ripple Component.)
6
Lineage Power
JAW050A and JAW075A Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Data Sheet
April 2008
Characteristic Curves (continued)
Test Configurations
OUTPUT VOLTAGE, VO (V)
(100 mV/div)
TO OSCILLOSCOPE
CURRENT
PROBE
LTEST
VI(+)
12 μH
CS 220 μF
ESR < 0.1 Ω
@ 20 °C, 100 kHz
BATTERY
33 μF
ESR < 0.7 Ω
@ 100 kHz
OUTPUT CURRENT, IO (A)
(1 A/div)
VI(–)
8-203(F).l
Note: Measure input reflected-ripple current with a simulated source
inductance (LTEST) of 12 µH. Capacitor CS offsets possible battery impedance. Measure current as shown above.
3.7 A
Figure 11. Input Reflected-Ripple Test Setup
TIME, t (200 ms/div)
COPPER STRIP
8-3333(F)
VO(+)
Note: Tested without any load capacitance.
1.0 μF
Figure 9. Typical JAW075A Transient Response to
Step Decrease in Load from 50% to 25%
of Full Load at Room Temperature and
48 Vdc Input (Waveform Averaged to
Eliminate Ripple Component.)
10 μF
VO(–)
8-513(F).d
Note: Use a 1.0 µF ceramic capacitor and a 10 µF aluminum or tantalum capacitor. Scope measurement should be made using a
BNC socket. Position the load between 51 mm and 76 mm
(2 in. and 3 in.) from the module.
REMOTE ON/OFF,
VON/OFF (V)
Figure 12. Peak-to-Peak Output Noise
Measurement Test Setup
SENSE(+)
VI(+)
OUTPUT VOLTAGE, Vo (V)
(2 V/div)
CONTACT AND
DISTRIBUTION LOSSES
VO(+)
II
IO
LOAD
SUPPLY
VI(–)
VO(–)
CONTACT
RESISTANCE
SENSE(–)
8-749(F)
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.
TIME, t (5 ms/div)
1-0099
Note: Tested without any load capacitance.
Figure 10. JAW075A1 Typical Start-Up from
Remote On/Off; IO = IO, max
Lineage Power
RESISTIVE
LOAD
SCOPE
[ V O (+) – V O (–) ]I O
η = ⎛ ------------------------------------------------⎞ x 100
⎝ [ V I (+) – V I (–) ]I I ⎠
%
Figure 13. Output Voltage and Efficiency
Measurement Test Setup
7
JAW050A and JAW075A Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Data Sheet
April 2008
Design Considerations
Feature Descriptions
Input Source Impedance
Overcurrent Protection
The power module should be connected to a low
ac-impedance input source. Highly inductive source
impedances can affect the stability of the power module. For the test configuration in Figure 11, a 33 µF
electrolytic capacitor (ESR < 0.7 Ω at 100 kHz)
mounted close to the power module helps ensure stability of the unit. For other highly inductive source
impedances, consult the factory for further application
guidelines.
To provide protection in an output overload condition,
the unit is equipped with an internal shutdown and
auto-restart mechanism. At the instance of current-limit
inception, the module enters a hiccup mode of operation whereby it shuts down and automatically attempts
to restart. As long as the fault persists, the module
remains in this mode.
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 60950, CSA C22.2 No. 60950-00, and
VDE 0805 (IEC 60950, 4th Edition).
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:
n
n
n
n
The input source is to be provided with reinforced
insulation from any other hazardous voltages, including the ac mains.
One VI pin and one VO pin are to be grounded, or
both the input and output pins are to be kept floating.
The input pins of the module are not operator accessible.
Another SELV reliability test is conducted on the
whole system, as required by the safety 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.
The protection mechanism is such that the unit can
continue in this condition until the fault is cleared.
Remote On/Off
Two remote on/off options are available. Positive logic
remote on/off turns the module on during a logic-high
voltage on the ON/OFF pin, and off during a logic low.
Negative logic remote on/off turns the module off during a logic high and on during a logic low. Negative
logic, device code suffix “1,” is the factory-preferred
configuration.
To turn the power module on and off, the user must
supply a switch to control the voltage between the
on/off terminal and the VI(–) terminal (Von/off). The
switch can be an open collector or equivalent (see
Figure 14). A logic low is Von/off = 0 V to 1.2 V. The
maximum Ion/off during a logic low is 1 mA. The switch
should maintain a logic-low voltage while sinking 1 mA.
During a logic high, the maximum Von/off generated by
the power module is 15 V. The maximum allowable
leakage current of the switch at Von/off = 15 V is 50 µA.
If not using the remote on/off feature, do one of the
following:
n
For negative logic, short the ON/OFF pin to VI(–).
n
For positive logic, leave the ON/OFF pin open.
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 voltage (ELV) outputs
when all inputs are ELV.
The input to these units is to be provided with a maximum 6 A normal-blow fuse in the ungrounded lead.
8
Lineage Power
JAW050A and JAW075A Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Data Sheet
April 2008
Feature Descriptions (continued)
Remote On/Off (continued)
SENSE(+)
SENSE(–)
VI(+)
Ion/off
+
SUPPLY
ON/OFF
IO
VI(–)
Von/off
–
VO(+)
II
CONTACT
RESISTANCE
SENSE(+)
LOAD
VO(–)
CONTACT AND
DISTRIBUTION LOSSES
8-651(F).m
VO(+)
LOAD
VI(+)
VI(–)
Figure 15. Effective Circuit Configuration for
Single-Module Remote-Sense Operation
VO(–)
SENSE(–)
8-720(F).c
Figure 14. Remote On/Off Implementation
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 output voltage sense range given in the Feature Specifications table, i.e.:
[VO(+) – VO(–)] – [SENSE(+) – SENSE(–)] ≤ 0.5 V
The voltage between the VO(+) and VO(–) terminals
must not exceed the minimum output overvoltage protection voltage as indicated in the Feature Specifications table. This limit includes any increase in voltage
due to remote-sense compensation and output voltage
set-point adjustment (trim). See Figure 15.
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.
Lineage Power
Output Voltage Set-Point Adjustment (Trim)
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 16). The following equation determines the required external-resistor value to
obtain a percentage output voltage change of Δ%.
1000
R adj-down = ⎛ ------------- – 11⎞ kΩ
⎝ Δ%
⎠
With an external resistor connected between the TRIM
and SENSE(+) pins (Radj-up), the output voltage set
point (VO, adj) increases (see Figure 17).
The following equation determines the required external-resistor value to obtain a percentage output voltage
change of Δ%.
R adj-up
Δ%
⎛ ( V O, nom ) ( 1 + --------⎞
- ) – 1.225
100
⎜
= ------------------------------------------------------------------------ 1000 – 11⎟ kΩ
⎜
⎟
1.225Δ%
⎝
⎠
The voltage between the VO(+) and VO(–) terminals
must not exceed the minimum output overvoltage protection voltage as indicated in the Feature Specifications table. This limit includes any increase in voltage
due to remote-sense compensation and output voltage
set-point adjustment (trim). See Figure 15.
9
JAW050A and JAW075A Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Data Sheet
April 2008
Feature Descriptions (continued)
Output Overvoltage Protection
Output Voltage Set-Point Adjustment (Trim)
To provide protection in an output overvoltage condition, the unit is equipped with circuitry that monitors the
voltage on the output terminals. If the voltage on the
output terminals exceed the overvoltage protection
threshold, the module enters a hiccup mode of operation whereby it shuts down and automatically attempts
to restart. As long as the fault persists, the module
remains in this mode.
(continued)
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.
VI(+)
ON/OFF
CASE
Overtemperature Protection
These modules feature an overtemperature protection
circuit to safeguard against thermal damage. The circuit shuts down when the maximum case temperature
is exceeded. The module will automatically restart
when the case temperature cools sufficiently.
Thermal Considerations
VO(+)
SENSE(+)
Introduction
TRIM
RLOAD
Radj-down
VI(–)
The protection mechanism is such that the unit can
continue in this condition until the fault is cleared.
SENSE(–)
VO(–)
8-748(F).b
Figure 16. Circuit Configuration to Decrease
Output Voltage
The power modules operate in a variety of thermal
environments; however, sufficient cooling should be
provided to help ensure reliable operation of the unit.
Heat-dissipating components inside the unit are thermally coupled to the case. Heat is removed by conduction, convection, and radiation to the surrounding
environment. Proper cooling can be verified by measuring the case temperature. Peak temperature (TC)
occurs at the position indicated in Figure 18.
MEASURE CASE
TEMPERATURE HERE
VI(+)
ON/OFF
VO(+)
SENSE(+)
VI(+)
Radj-up
CASE
TRIM
ON/OFF
RLOAD
VO(+)
+ SEN
TRIM
VI(–)
SENSE(–)
30.5
(1.20)
VO(–)
CASE
VI(–)
– SEN
VO(–)
8-715(F).b
29.0
(1.14)
Figure 17. Circuit Configuration to Increase
Output Voltage
10
8-716(F).h
Note: Top view, pin locations are for reference only. Measurements
are shown in millimeters and (inches).
Figure 18. Case Temperature Measurement
Location
Lineage Power
Data Sheet
April 2008
JAW050A and JAW075A Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Thermal Considerations (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.
POWER DISSIPATION, PD (W)
Introduction (continued)
12
11
VI = 75 V
VI = 55 V
VI = 36 V
10
9
8
7
6
5
4
3
0
1
2
Heat Transfer Without Heat Sinks
Note that the natural convection condition was measured 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-dissipating components in the system. The use of Figure 22 is
shown in the following example.
Example
What is the minimum airflow necessary for a JAW075A
operating at VI = 55 V, an output current of 15 A, transverse orientation, and a maximum ambient temperature of 55 °C?
4
5
6
7
8
9
10
8-3336(F)
Figure 19. JAW050A Power Dissipation vs.
Output Current at 25 °C
POWER DISSIPATION, PD (W)
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 versus local ambient temperature (TA) for natural convection through 4 m/s (800 ft./min.). Note that the thermal
performance is orientation dependent. Longitudinal orientation 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 parallel to the airflow.
3
OUTPUT CURRENT, IO (A)
16
15
14
13
12
11
10
9
8
7
6
5
4
1
VI = 75 V
VI = 55 V
VI = 36 V
2
3
4
5
6
7
8
9 10 11 12 13 14 15
OUTPUT CURRENT, IO (A)
8-3337(F)
Figure 20. JAW075A Power Dissipation vs.
Output Current at 25 °C
Solution
Given: VI = 55 V
IO = 15 A
TA = 55 °C
Determine PD (Use Figure 20.):
PD = 14 W
Determine airflow (v) (Use Figure 22.):
v = 2.3 m/s (460 ft./min.)
Lineage Power
11
JAW050A and JAW075A Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Thermal Considerations (continued)
Heat Transfer Without Heat Sinks (continued)
18
3.0 m/s
(600 ft./min.)
4.0 m/s
(800 ft./min.)
16
14
12
10
0.1 m/s
8 (20 ft./min.)
1.0 m/s
6 (200 ft./min.)
4
2.0 m/s
(400 ft./min.)
2
10
20
(TC – TA)
C, max
θ ca = ΔT
--------------------- = ------------------------
30
40
50
60
70
80
90 100
LOCAL AMBIENT TEMPERATURE, TA (°C)
8-2465(F)
Figure 21. Forced Convection Power Derating with
No Heat Sink; Longitudinal Orientation
The location to measure case temperature (TC) is
shown in Figure 18. Case-to-ambient thermal resistance vs. airflow for various heat sink configurations
and heights is shown in Figures 23 and 24. These
curves were obtained by experimental testing of heat
sinks, which are offered in the product catalog.
20
8
7
5
4
3
2
1
3.0 m/s
(600 ft./min.)
4.0 m/s
(800 ft./min.)
16
14
NO HEAT SINK
1/4 IN. HEAT SINK
1/2 IN. HEAT SINK
1 IN. HEAT SINK
1 1/2 IN. HEAT SINK
6
0
18
0
0.5
(100)
1.0
(200)
1.5
(300)
2.5
(500)
2.0
(400)
3.0
(600)
AIR VELOCITY, m/s (ft./min.)
8-2164(F).a
12
Figure 23. Case-to-Ambient Thermal Resistance
Curves; Longitudinal Orientation
10
8
0.1 m/s
(20 ft.min.)
6
1.0 m/s
(200 ft./min.)
4
2.0 m/s
2 (400 ft./min.)
8
0
0
10
20
30
40
50
60
70
80
90 100
LOCAL AMBIENT TEMPERATURE, TA (°C)
8-2466(F)
Figure 22. Forced Convection Power Derating with
No Heat Sink; Transverse Orientation
Heat Transfer with Heat Sinks
The power modules have through-threaded, M3 x 0.5
mounting holes, which enable heat sinks or cold plates
to attach to the module. The mounting torque must not
exceed 0.56 N-m (5 in.-lb.).
CASE-TO-AMBIENT THERMAL
RESISTANCE, θCA (°C/W)
POWER DISSIPATION, PD (W)
PD
PD
9
0
0
Thermal derating with heat sinks is expressed by using
the overall thermal resistance of the module. Total
module thermal resistance (θca) is defined as the maximum case temperature rise (ΔTC, max) divided by the
module power dissipation (PD):
CASE-TO-AMBIENT THERMAL
RESISTANCE, θCA (°C/W)
POWER DISSIPATION, PD (W)
20
Data Sheet
April 2008
7
NO HEAT SINK
1/4 IN. HEAT SINK
1/2 IN. HEAT SINK
1 IN. HEAT SINK
1 1/2 IN. HEAT SINK
6
5
4
3
2
1
0
0
0.5
(100)
1.0
(200)
1.5
(300)
2.5
(500)
2.0
(400)
3.0
(600)
AIR VELOCITY, m/s (ft./min.)
8-2165(F).a
Figure 24. Case-to-Ambient Thermal Resistance
Curves; Transverse Orientation
12
Lineage Power
JAW050A and JAW075A Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Data Sheet
April 2008
Thermal Considerations (continued)
Custom Heat Sinks
Heat Transfer with Heat Sinks (continued)
A more detailed model can be used to determine the
required thermal resistance of a heat sink to provide
necessary cooling. The total module resistance can be
separated into a resistance from case-to-sink (θcs) and
sink-to-ambient (θsa) as shown in Figure 25.
These measured resistances are from heat transfer
from the sides and bottom of the module as well as the
top side with the attached heat sink; therefore, the
case-to-ambient thermal resistances shown are generally lower than the resistance of the heat sink by itself.
The module used to collect the data in Figures 23 and
24 had a thermal-conductive dry pad between the case
and the heat sink to minimize contact resistance. The
use of Figure 23 is shown in the following example.
PD
TC
TS
θcs
TA
θsa
8-1304(F).e
Figure 25. Resistance from Case-to-Sink and
Sink-to-Ambient
Example
If an 82 °C case temperature is desired, what is the
minimum airflow necessary? Assume the JAW075A
module is operating at VI = 55 V, an output current of
15 A, longitudinal orientation, maximum ambient air
temperature of 40 °C, and the heat sink is 1/4 inch.
For a managed interface using thermal grease or foils,
a value of θcs = 0.1 °C/W to 0.3 °C/W is typical. The
solution for heat sink resistance is:
( TC – TA)
PD
θ sa = ------------------------- – θ cs
Solution
Given: VI = 55 V
IO = 15 A
TA = 40 °C
TC = 82 °C
Heat sink = 1/4 inch.
Determine PD by using Figure 20:
This equation assumes that all dissipated power must
be shed by the heat sink. Depending on the userdefined application environment, a more accurate
model, including heat transfer from the sides and bottom of the module, can be used. This equation provides a conservative estimate for such instances.
PD = 14 W
Then solve the following equation:
(TC – TA)
θ ca = ----------------------PD
82 – 40 )
θ ca = (-----------------------
EMC Considerations
For assistance with designing for EMC compliance,
refer to the FLTR100V10 Filter Module Data Sheet
(DS99-294EPS).
14
θ ca = 3.0 °C/W
Use Figure 23 to determine air velocity for the 1/4 inch
heat sink.
The minimum airflow necessary for this module is
1.1 m/s (220 ft./min.).
Lineage Power
Layout Considerations
Copper paths must not be routed beneath the power
module standoffs. For additional layout guidelines,
refer to the FLTR100V10 Filter Module Data Sheet
(DS99-294EPS).
13
JAW050A and JAW075A Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Data Sheet
April 2008
Outline Diagram
Dimensions are in millimeters and (inches).
Tolerances: x.x mm ± 0.5 mm (x.xx in. ± 0.02 in.)
x.xx mm ± 0.25 mm (x.xxx in. ± 0.010 in.)
Top View
57.9 (2.28)
61.0
(2.40)
Side View
SIDE LABEL*
0.51 (0.020)
12.7 (0.50)
1.02 (0.040) DIA
SOLDER-PLATED
BRASS, 7 PLACES
4.1 (0.16)
MIN†
2.06 (0.081) DIA SOLDERPLATED BRASS, 2 PLACES
(VO(−) AND VO(+))
Bottom View
12.7 (0.50)
STANDOFF,
4 PLACES
7.1
(0.28)
5.1 (0.20)
7.1 (0.28)
10.16
(0.400)
50.8
(2.00)
MOUNTING INSERTS
M3 x 0.5 THROUGH,
4 PLACES
25.40
(1.000)
35.56
(1.400)
VI(−)
VO(−)
CASE
−SEN
TRIM
ON/OFF
+SEN
VI(+)
VO(+)
10.16
(0.400) 17.78
(0.700)
25.40
(1.000)
35.56
(1.400)
48.26 (1.900)
4.8
(0.19)
48.3 (1.90)
8-716(F).j
* Side label includes Lineage name, product designation, safety agency markings, input/output voltage and current ratings, and bar code.
† The case pin length is 5.3 (0.21), i.e., 1.2 (0.05) longer than the other pins.
14
Lineage Power
JAW050A and JAW075A Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Data Sheet
April 2008
Recommended Hole Pattern
Component-side footprint.
Dimensions are in millimeters and (inches).
57.9 (2.28)
4.8
(0.19)
48.3 (1.90)
VI(+)
35.56
(1.400)
50.8
(2.00)
48.26 (1.900)
TERMINALS
61.0
(2.40)
VO(+)
35.56
(1.400)
+SEN
ON/OFF
25.40
(1.000)
TRIM
25.40
(1.000)
10.16
(0.400)
CASE
−SEN
VI(−)
VO(−)
10.16
(0.400)
17.78
(0.700)
5.1 (0.20)
12.7 (0.50)
MODULE OUTLINE
8-716(F).j
Ordering Information
Please contact your Lineage Power Account Manager or Field Application Engineer for pricing and availability.
Table 4. Device Codes
Input
Voltage
Output
Voltage
Output
Power
Output
Current
Remote On/Off
Logic
Device
Code
Comcode
48 Vdc
5.0 Vdc
50 W
10 A
Negative
JAW050A1
108209974
48 Vdc
5.0 Vdc
75 W
15 A
Negative
JAW075A1
108064353
48 Vdc
5.0 Vdc
50 W
10 A
Positive
JAW050A
108449323
48 Vdc
5.0 Vdc
75 W
15 A
Positive
JAW075A
108449422
Optional features can be ordered using the suffixes shown in Table 5. To order more than one option, list the
device codes suffixes in numerically descending order. For example, the device code for a JAW075A module with
the following option is shown below:
Short pins: 3.68 mm ± 0.25 mm (0.145 in. ± 0.010 in.)
JAW075A6
Table 5. Device Options
Option
Short pins: 2.79 mm ± 0.25 mm
(0.110 in. +0.020 in./–0.010 in.)
Short pins: 3.68 mm ± 0.25 mm
(0.145 in. ± 0.010 in.)
Lineage Power
Device Code
Suffix
8
6
15
JAW050A and JAW075A Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 5 Vdc Output; 50 W to 75 W
Data Sheet
April 2008
Ordering Information (continued)
Table 6. Device Accessories
Accessory
Comcode
1/4 in. transverse kit (heat sink, thermal pad, and screws)
1/4 in. longitudinal kit (heat sink, thermal pad, and screws)
1/2 in. transverse kit (heat sink, thermal pad, and screws)
1/2 in. longitudinal kit (heat sink, thermal pad, and screws)
1 in. transverse kit (heat sink, thermal pad, and screws)
1 in. longitudinal kit (heat sink, thermal pad, and screws)
1 1/2 in. transverse kit (heat sink, thermal pad, and screws)
1 1/2 in. longitudinal kit (heat sink, thermal pad, and screws)
407243989
407243997
407244706
407244714
407244722
407244730
407244748
407244755
Dimensions are in millimeters and (inches).
1/4 IN.
1/4 IN.
1/2 IN.
1/2 IN.
1 IN.
1 IN.
61
(2.4)
57.9
(2.28)
1 1/2 IN.
1 1/2 IN.
57.9
(2.28)
61
(2.4)
8-2832(F).a
Figure 26. Longitudinal Heat Sink
8-2833(F)
Figure 27. Transverse Heat Sink
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e-m ail: tech sup port1@ lin ea gep ower.co m
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Lineage Power reserves the right to make changes to the produc t(s) or information contained herein without notice. No liability is ass umed as a res ult of their use or
applic ation. No rights under any patent acc ompany the sale of any s uc h pr oduct(s ) or information.
© 2008 Lineage Power Corpor ation, (Mesquite, Texas ) All International Rights Res er ved.
April 2008
DS00-326EPS (Replaces DS00-325EPS)
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