Lineage Power JBW030A1 36-75 vdc input; 3.3 vdc and 5 vdc outputs; 30 w Datasheet

Data Sheet
March 27, 2008
JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
Features
n
The JBW030-Series Power Modules use advanced, surfacemount technology and deliver high-quality, compact,
dc-dc conversion at an economical price.
Applications
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
Low output noise
n
Constant frequency
n
Industry-standard pinout
n
Metal case
n
Case ground pin
n
2:1 input voltage range
n
Overcurrent protection
n
Output overvoltage protection
n
Remote on/off
n
Remote sense
n
Distributed power architectures
n
Adjustable output voltage: 80% to 110% of VO, nom
n
Communications equipment
n
n
Workstations / Computer equipment
n
Options
n
n
Heat sinks available for extended operation
n
Choice of remote on/off logic configuration
n
n
UL* 60950 Recognized, CSA† C22.2 No. 6095000 Certified, and EN 60950 (VDE0805):2001-12
Licensed
CE mark meets 73/23/EEC and 93/68/EEC
directives‡
Within FCC Class A radiated limits
Short pins: 2.79 mm ± 0.25 mm
(0.110 in. ± 0.010 in.)
Short pins: 3.68 mm ± 0.25 mm
(0.145 in. ± 0.010 in.)
Description
The JBW030-Series Power Modules are dc-dc converters that operate over an input voltage range of 36 Vdc to
75 Vdc and provide precisely regulated outputs. The outputs are isolated from the inputs, allowing versatile
polarity configurations and grounding connections. The modules have maximum power ratings of up to 30 W at
a typical full-load efficiency of up to 82% (5 Vout).
These power modules feature remote on/off, remote sense, and output voltage adjustment, (80% to 110% of
the nominal output voltage). The modules are PC board-mountable, encapsulated in metal cases, and are rated
to full load at 100 °C case temperature. No external filtering is required.
* UL is a registered trademark of Underwriters Laboratories, Inc.
† CSA is a registered trademark of Canadian Standards Association.
‡ 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.)
JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
Data Sheet
March 27, 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
Input Voltage Continuous
VI
—
80
Vdc
Operating Case Temperature
(See Thermal Considerations section.)
TC
–40
100
°C
Storage Temperature
Tstg
–40
110
°C
I/O Isolation Voltage:
Continuous
Transient
—
—
—
—
500
1500
Vdc
Vdc
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
—
—
1.6
A
Inrush Transient
i 2t
—
—
0.2
A2s
Input Reflected-ripple Current, Peak-to-peak
(5 Hz to 20 MHz, 12 µH source impedance;
TC = 25 °C; see Figure 11 and Design
Considerations section.)
II
—
25
—
mAp-p
Input Ripple Rejection (120 Hz)
—
—
50
—
dB
Operating Input Voltage
Maximum Input Current
(VI = 0 V to 75 V; IO = IO, max; see Figure 1.)
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 fast-acting fuse with a maximum rating of 5 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
Data Sheet
March 27, 2008
JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
Electrical Specifications (continued)
Table 2. Output Specifications
Device Code or
Code Suffix
Symbol
Min
Typ
Max
Unit
Output Voltage Set Point
(VI = 48 V; IO = IO, max; TC = 25 °C)
JBW030F
JBW030A
VO, set
VO, set
3.25
4.95
3.3
5.0
3.35
5.05
Vdc
Vdc
Output Voltage
(Over all operating input voltage,
resistive load, and temperature
conditions until end of life. See
Figure 13.)
JBW030F
JBW030A
VO
VO
3.20
4.85
—
—
3.40
5.15
Vdc
Vdc
All
All
JBW030F
JBW030A
—
—
—
—
—
—
—
—
0.01
0.05
0.75
0.5
0.1
0.2
1.5
1.5
%VO
%VO
%VO
%VO
All
All
—
—
—
—
—
—
20
150
mVrms
mVp-p
Output Current
(At IO < IO, min, the modules may
exceed output ripple specifications;
see Figures 2 and 3.)
JBW030F
JBW030A
IO
IO
0.6
0.6
—
—
6.5
6.0
A
A
Output Current-limit Inception
(VO = 90% of VO, nom)
JBW030F
JBW030A
IO
IO
—
—
8.5
8.0
—
—
A
A
Output Short-circuit Current
(VO = 250 mV)
JBW030F
JBW030A
—
—
—
—
10.0
9.5
13
12.5
A
A
Efficiency
(VI = 48 V; IO = IO, max; TC = 25 °C;
see Figures 4, 5 and 13.)
JBW030F
JBW030A
η
η
75
79
78
82
—
—
%
%
All
—
—
300
—
kHz
JBW030F
JBW030A
All
—
—
—
—
—
—
5
2
0.5
—
—
—
%VO, set
%VO, set
ms
JBW030F
JBW030A
All
—
—
—
—
—
—
5
2
0.5
—
—
—
%VO, set
%VO, set
ms
Parameter
Output Regulation:
Line (VI = 36 V to 75 V)
Load (IO = IO, min to IO, max)
Temperature
(TC = –40 °C to +100 °C)
Output Ripple and Noise Voltage
(See Figure 12.):
RMS
Peak-to-peak (5 Hz to 20 MHz)
Switching Frequency
Dynamic Response
(ΔIO/Δt = 1 A/10 µs, VI = 48 V,
TC = 25 °C; see Figures 6 — 9.):
Load Change from IO = 50% to 75%
of IO, max:
Peak Deviation
Settling Time
(VO < 10% peak deviation)
Load Change from IO = 50% to 25%
of IO, max:
Peak Deviation
Settling Time
(VO < 10% of peak deviation)
Lineage Power
3
JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
Data Sheet
March 27, 2008
Electrical Specifications (continued)
Table 3. Isolation Specifications
Parameter
Min
Typ
Max
Unit
Isolation Capacitance
—
2500
—
pF
Isolation Resistance
10
—
—
MΩ
Typ
Max
General Specifications
Parameter
Min
Calculated MTBF (IO = 80% of IO, max; TC = 40 °C)
Unit
4,370,000
Weight
—
—
hours
113 (4.0)
g (oz.)
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions and Design Considerations for further information.
Parameter
Device Code or
Code Suffix
Symbol
Min
Typ
Max
Unit
Remote On/Off
(VI = 36 V to 75 V; open collector or
equivalent compatible; signal referenced to
VI(–) terminal. See Figure 14 and Feature
Descriptions.):
JW030x1-M Negative Logic:
Logic Low—Module On
Logic High—Module Off
JW030x-M Positive Logic:
Logic Low—Module Off
Logic High—Module On
Module Specifications:
On/Off Current—Logic Low
On/Off Voltage:
Logic Low
Logic High (Ion/off = 0)
Open Collector Switch Specifications:
Leakage Current During Logic High
(Von/off = 10 V)
Output Low Voltage During Logic Low
(Ion/off = 1 mA)
Turn-on Time (@ 80% of IO, max;
TA = 25 °C; VO within ±1% of steady
state; see Figure 10.)
Output Voltage Overshoot
All
Ion/off
—
—
1.0
mA
All
All
Von/off
Von/off
–0.7
—
—
—
1.2
15
V
V
All
Ion/off
—
—
50
µA
All
Von/off
—
—
1.2
V
All
—
—
80
150
ms
All
—
—
0
5
%
Output Voltage Sense Range
All
—
—
—
10
%VO, nom
Output Voltage Set-point Adjustment Range
(See Feature Descriptions.)
All
—
80
—
110
%VO, nom
JBW030F
JBW030A
VO, clamp
VO, clamp
4.0
5.6
—
—
5.7
7.0
V
V
Output Overvoltage Protection (clamp)
4
Lineage Power
JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
Data Sheet
March 27, 2008
Characteristic Curves
3.5
OUTPUT VOLTAGE, VO (V)
INPUT CURRENT, II (A)
1.2
1
0.8
IO = 6 A
0.6
0.4
IO = 3 A
0.2
3
2.5
2
VI = 36 V
VI = 48 V
VI = 75 V
1.5
1
0.5
IO = 0.5 A
0
0
30
35
40
45
50
55
60
INPUT VOLTAGE, VI (V)
65
70
75
0
1
2
3
4
5
6
7
8
9
10
11
OUTPUT CURRENT, IO (A)
1-0763
Figure 1. Typical Input Characteristics
1-0726
Figure 3. JBW030F Typical Output Characteristics
85
80
5
EFFICIENCY, η (%)
OUTPUT VOLTAGE, VO (V)
6
4
3
VI = 36 V
VI = 48 V
VI = 75 V
2
75
70
65
VI = 36 V
VI = 48 V
VI = 75 V
60
55
1
0
50
0
0
2
4
6
8
10
0.5
1
1.5
2 2.5 3 3.5 4 4.5
OUTPUT CURRENT, IO (A)
5
5.5
6
6.5
OUTPUT CURRENT, IO (A)
1-0727
Figure 2. JBW030A Typical Output Characteristics
Lineage Power
1-0760
Figure 4. JBW030F Typical Converter Efficiency
vs. Output Current
5
JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
Data Sheet
March 27, 2008
OUTPUT VOLTAGE,
VO (50 mV/div)
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
OUTPUT CURRENT,
IO (2 A/div)
EFFICIENCY η (%)
Characteristic Curves (continued)
VI = 36 V
VI = 48 V
VI = 75 V
0
1
2
3
4
5
6
OUTPUT CURRENT, IO (A)
1-0878
TIME, t (0.2 ms/div)
1-0880
OUTPUT CURRENT,
IO (2 A/div)
OUTPUT CURRENT,
IO (2 A/div)
TIME, t (0.2 ms/div)
1-0879
Figure 6. JBW030F Typical Output Voltage for a
Step Load Change from 50% to 75%
6
Figure 7. JBW030A Typical Output Voltage for a
Step Load Change from 50% to 75%
OUTPUT VOLTAGE,
VO (50 mV/div)
OUTPUT VOLTAGE,
VO (50 mV/div)
Figure 5. JBW030ATypical Converter Efficiency
vs. Output Current
TIME, t (0.2 ms/div)
1-0881
Figure 8. JBW030F Typical Output Voltage for a
Step Load Change from 50% to 25%
Lineage Power
JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
Data Sheet
March 27, 2008
Characteristic Curves (continued)
Test Configurations
OUTPUT VOLTAGE,
VO (50 mV/div)
TO OSCILLOSCOPE
CURRENT
PROBE
LTEST
V I (+)
12 µH
CS 220 µF
IMPEDANCE < 0.1 Ω
@ 20 ˚C, 100 kHz
BATTERY
OUTPUT CURRENT,
IO (2 A/div)
VI (-)
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 11. Input Reflected-Ripple Test Setup
TIME, t (0.2 ms/div)
1-0882
COPPER STRIP
Figure 9. JBW030A Typical Output Voltage for a
Step Load Change from 50% to 25%
V O (+)
0.1 µF
RESISTIVE
LOAD
SCOPE
100
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.
80
40
Figure 12. Peak-to-Peak Output Noise
Measurement Test Setup
REMOTE ON/OFF,
Von/off (5 V/div)
OUTPUT VOLTAGE,
VO (%VO, set)
V O (–)
SENSE(+)
VI (+)/CASE
TIME, t (10 ms/div)
VO (+)
IO
II
8-733a
Figure 10. Typical Output Voltage Start-Up when
Signal Applied to Remote On/Off
CONTACT AND
DISTRIBUTION LOSSES
LOAD
SUPPLY
VI(–)
CONTACT
RESISTANCE
VO (–)
SENSE(–)
8-749(C).a
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.
[ V O (+) – V O (–) ] I O
η = ⎛⎝ -----------------------------------------------------⎞⎠ × 100
[ V I (+) – V I (–) ] II
%
Figure 13. Output Voltage and Efficiency
Measurement Test Setup
Lineage Power
7
JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
Data Sheet
March 27, 2008
Design Considerations
Feature Descriptions
Grounding Considerations
Overcurrent Protection
The case is not connected internally to allow the user
flexibility in grounding.
To provide protection in a fault (output overload) condition, the unit is equipped with internal current-limiting
circuitry and can endure current limiting for an unlimited duration. At the point of current-limit inception, the
unit shifts from voltage control to current control. If the
output 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.
Input Source Impedance
The power module should be connected to a low acimpedance input source. Highly inductive source
impedances can affect the stability of the power module. A 33 µF electrolytic capacitor (ESR < 0.7 Ω at
100 kHz) mounted close to the power module helps
ensure stability of the unit. (See Figure 11.)
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 EN
60950 (VDE0805):2001-12.
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.
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.
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 REMOTE 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 = –0.7 V to 1.2 V, during
which the module is off. The maximum Ion/off during a
logic low is 1 mA. The switch should maintain a logiclow 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.
The module has internal capacitance to reduce noise
at the ON/OFF pin. Additional capacitance is not generally needed and may degrade the start-up characteristics of the module.
CAUTION: To avoid damaging the power module
or external on/off circuit, the connection between the VI(–) pin and the input
source must be made before or simultaneously to making a connection
between the ON/OFF pin and the input
source (either directly or through the
external on/off circuit.)
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 5 A fast-acting fuse in the ungrounded lead.
8
Lineage Power
JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
Data Sheet
March 27, 2008
Feature Descriptions (continued)
Output Voltage Set-Point Adjustment
(Trim)
Remote On/Off (continued)
VI(+)
VI(-)
–
SENSE(+)
Von/off
VO(+)
+
Ion/off
LOAD
REMOTE
ON/OFF
VO(–)
SENSE(–)
8-720(C).h
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(–)] ≤ 0.2 V
The voltage between the VO(+) and VO(–) terminals
must not exceed the minimum output overvoltage shutdown voltage as indicated in the Feature Specifications
table. This limit includes any increase in voltage due to
remote-sense compensation and output voltage setpoint 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.
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. 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 an output voltage change of % Δ.
1 – %Δ
R adj-down = ⎛ -------------------⎞ 10 kΩ
⎝ %Δ ⎠
For example, to lower the output voltage by 20%, the
external resistor value must be:
1 – 0.2
R adj-down = ⎛ -----------------⎞ 10 kΩ =
⎝ 0.2 ⎠
40.00 kΩ
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
equations determine the required external-resistor
value to obtain an output voltage change of % Δ.
JBW030A:
1 + %Δ
V O, nom
R adj-up = ⎛ ------------------ – 1⎞ ⎛ -------------------⎞ 10 kΩ
⎝ 2.5
⎠ ⎝ %Δ ⎠
For example, to increase the output voltage of the
JBW030A by 5%, the external resistor value must be:
1 + 0.05
5.0
R adj-up = ⎛ -------- – 1⎞ ⎛ ---------------------⎞ 10 kΩ = 210 kΩ
⎝ 2.5
⎠ ⎝ 0.05 ⎠
JBW030F:
1 + %Δ
V O, nom
R adj-up = ⎛ ------------------- – 1⎞ ⎛ -------------------⎞ 10 kΩ
⎝ 1.235
⎠ ⎝ %Δ ⎠
For example, to increase the output voltage of the
JBW030F by 5%, the external resistor must be:
SENSE(+)
1 + 0.05
3.3
R adj-up = ⎛ --------------- – 1⎞ ⎛ ---------------------⎞ 10 kΩ = 351.1 kΩ
⎝ 1.235
⎠ ⎝ 0.05 ⎠
SENSE(–)
SUPPLY
VI(+)
VO(+)
VI(-)
VO(–)
II
CONTACT
RESISTANCE
IO
LOAD
CONTACT AND
DISTRIBUTION LOSSES
8-651(C).m
Figure 15. Effective Circuit Configuration for
Single-Module Remote-Sense Operation
Lineage Power
9
JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
Data Sheet
March 27, 2008
Feature Descriptions (continued)
VI(+)
Output Voltage Set-Point Adjustment
(Trim) (continued)
ON/OFF
VO(+)
SENSE(+)
Radj-up
The combination of the output voltage adjustment and
sense range and the output voltage given in the Feature Specifications table cannot exceed 110% of the
nominal output voltage between the VO(+) and VO(–)
terminals.
The JBW030-Series Power Modules have a fixed current-limit set point. Therefore, as the output voltage is
adjusted down, the available output power is reduced.
In addition, the minimum output current is a function of
the output voltage. As the output voltage is adjusted
down, the minimum required output current can
increase.
VI (+)
ON/OFF
CASE
VO (+)
SENSE(+)
RLOAD
TRIM
Radj-down
VI (–)
SENSE(–)
CASE
VI(–)
TRIM
RLOAD
SENSE(–)
VO(–)
8-715(C)b
Figure 17. Circuit Configuration to Increase Output
Voltage
Output Overvoltage Protection
The output overvoltage clamp consists of control circuitry, independent of the primary regulation loop, that
monitors the voltage on the output terminals. The control 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.
VO(–)
8-748(C)b
Figure 16. Circuit Configuration to Decrease
Output Voltage
10
Lineage Power
JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
Data Sheet
March 27, 2008
Thermal Considerations
The JBW030-Series Power Modules are designed to operate in a variety of thermal environments. As with any
electronic component, sufficient cooling must be provided to help ensure reliable operation. Heat-dissipating components inside the module are thermally coupled to the case to enable heat removal by conduction, convection,
and radiation to the surrounding environment.
The thermal data presented is based on measurements taken in a wind tunnel. The test setup shown in Figure 18
was used to collect data for Figure 21.
The graphs in Figures 19 and 20 provide general guidelines for use. Actual performance can vary depending on
the particular application environment. The maximum case temperature of 100 °C must not be exceeded.
12.7 (0.50)
WIND TUNNEL
WALL
MEASURE CASE
TEMPERATURE (TC) AT
CENTER OF UNIT
AIRFLOW
CONNECTORS TO
LOADS, POWER
SUPPLIES, AND
DATALOGGER,
6.35 (0.25) TALL
203.2
(8.00)
AIRFLOW
101.6
(4.00)
76.2
(3.00)
AIR VELOCITY
AND AMBIENT
TEMPERATURE
MEASURED
BELOW THE
MODULE
203.2 (8.00)
19.1 (0.75)
8-1046(C)
Note: Dimensions are in millimeters and (inches).
Figure 18. Thermal Test Setup
Basic Thermal Performance
The JBW030-Series Power Modules are constructed with a specially designed, heat spreading enclosure. As a
result, full-load operation in natural convection at 50 °C can be achieved without the use of an external heat sink.
Higher ambient temperatures can be sustained by increasing the airflow or by adding a heat sink. As stated, this
data is based on a maximum case temperature of 100 °C and measured in the test configuration shown in
Figure 18.
Lineage Power
11
JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
Thermal Considerations (continued)
Data Sheet
March 27, 2008
9
To determine the necessary airflow, determine the
power dissipated by the unit for the particular application. Figures 19 and 20 show typical power
dissipation for these power modules over a range of
output currents. With the known power dissipation and
a given local ambient temperature, the appropriate airflow can be chosen from the derating curves in
Figure 21. For example, if the JBW030A dissipates 6.2
W, the minimum airflow in a 80 °C environment is
1 ms–1 (200 ft./min.).
POWER DISSIPATION, PD (W)
8
Forced Convection Cooling
7
6
5
2.0 ms -1(400 ft./min.)
1.0 ms -1(200 ft./min.)
0.5 ms -1(100 ft./min.)
NATURAL
CONVECTION
4
3
2
1
0
30
40
50
60
70
80
90
100
LOCAL AMBIENT TEMPERATURE, TA (˚C)
8-1051(C)
POWER DISSIPATED, PD (W)
7
VI = 36 V
VI = 48 V
VI = 75 V
6
5
Figure 21. Forced Convection Power Derating with
No Heat Sink; Either Orientation
4
3
Heat Sink Selection
2
1
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
OUTPUT CURRENT, IO (A)
5
5.5
6
6.5
1-0762
Figure 22 shows the case-to-ambient thermal resistance, θ (°C/W), for these modules. These curves can
be used to predict which heat sink will be needed for a
particular environment. For example, if the JBW030A
dissipates 7 W of heat in an 80 °C environment with an
airflow of 0.7 ms–1 (130 ft./min.), the minimum heat
sink required can be determined as follows:
Figure 19. JBW030F Power Dissipation vs.
Output Current
POWER DISSIPATED, PD (W)
8
7
6
VI = 75 V
VI = 48 V
5
θ ≤ ( T C, max – T A ) ⁄ P D
4
where:
3
VI = 36 V
2
1
0
0
1
2
3
4
OUTPUT CURRENT, IO (A)
5
Figure 20. JBW030A Power Dissipation vs.
Output Current
12
Several heat sinks are available for these modules.
The case includes through-threaded mounting holes
allowing attachment of heat sinks or cold plates from
either side of the module. The mounting torque must
not exceed 0.56 N-m (5 in./lb.).
6
1-0761
θ = module’s total thermal resistance
TC, max = case temperature (See Figure 18.)
TA = inlet ambient temperature
(See Figure 18.)
PD = power dissipation
θ ≤ (100 – 80)/7
θ ≤ 2.9 °C/W
From Figure 22, the 1/2 in. high heat sink or greater is
required.
Lineage Power
JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
Data Sheet
March 27, 2008
Thermal Considerations (continued)
Although the previous example uses 100 °C as the
maximum case temperature, for extremely high reliability applications, one can use a lower temperature for
TC, max.
Heat Sink Selection (continued)
It is important to point out that the thermal resistances
shown in Figure 22 are for 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 will generally be lower than
the resistance of the heat sink by itself. The data in Figure 22 was taken with a thermally conductive dry pad
between the case and the heat sink to minimize contact
resistance (typically 0.1 °C/W to 0.3 °C/W).
CASE-TO-AMBIENT THERMAL
RESISTANCE, θCA (˚C/W)
8
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
0.25
(50)
0.51 0.76
(100) (150)
1.02 1.27
(200) (250)
1.52 1.78 2.03
(300) (350) (400)
AIR VELOCITY, ms -1(ft./min.)
For a more detailed explanation of thermal energy
management for this series of power modules as well
as more details on available heat sinks, please request
the following technical note: Thermal Energy Management for JC- and JW-Series 30 Watt Board-Mounted
Power Modules (TN97-016EPS).
8-1052(C).a
Figure 22. Case-to-Ambient Thermal Resistance
vs. Air Velocity Curves; Either
Orientation
Lineage Power
Layout Considerations
Copper paths must not be routed beneath the power
module standoffs.
13
JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
Data Sheet
March 27, 2008
Outline Diagram
Dimensions are in millimeters and (inches).
Tolerances: x.x ± 0.5 mm (0.02 in.), x.xx ± 0.25 mm (0.010 in.).
Top View
57.9 (2.28) MAX
Pin marking designation
is shown for reference only
61.0
(2.40)
MAX
VI(+)
VO(+)
ON/
OFF
+ SEN
TRIM
CASE
- SEN
VO(-)
VI(-)
Side View
0.51 (0.020)
12.7 (0.50)
MAX
1.02 (0.040) DIA
SOLDER-PLATED
BRASS,ALL PINS
5.1 (0.20)
MIN
Bottom View
STANDOFF,
12.7 (0.50) MAX 4 PLACES
7.1
(0.28)
MOUNTING INSERTS
M3 x 0.5 THROUGH,
4 PLACES
5.1 (0.20)
7.1 (0.28)
10.16
(0.400)
50.8
(2.00)
25.40
(1.000)
35.56
(1.400)
4
5
3
6
7
2
1
4.8
(0.19)
8
48.26 (1.900)
TERMINALS
10.16
(0.400) 17.78
(0.700)
25.40
(1.000)
35.56
(1.400)
9
48.3 (1.90)
MOUNTING HOLES
8-716(C)
14
Lineage Power
JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
Data Sheet
March 27, 2008
Recommended Hole Pattern
Component-side footprint.
Dimensions are in millimeters and (inches).
48.3 (1.90)
4.8
(0.19)
1
35.56
(1.400)
50.8
(2.00)
48.26 (1.900)
TERMINALS
2
9
35.56
(1.400)
8
25.40
(1.000)
7
25.40
(1.000)
10.16
(0.400)
3
6
4
5
17.78
10.16 (0.700)
(0.400)
5.1 (0.20)
12.7 (0.50)
MAX
MOUNTING INSERTS
MODULE OUTLINE
8-716(C)
Ordering Information
Please contact your Lineage Power Account Manager or Field Application Engineer for pricing and availability.
Table 4. Device Codes
Input
Voltage
48 V
48 V
48 V
48 V
Output
Voltage
3.3 V
3.3 V
5V
5V
Output
Power
21.5 W
21.5 W
30 W
30 W
Remote On/
Off Logic
Positive
Negative
Positive
Negative
Device
Code
JBW030F
JBW030F1
JBW030A
JBW030A1
Comcode
108966078
108975418
108966086
108970203
Table 5. Device Options
Option
Device Code Suffix
Short pins: 3.68 mm ± 0.25 mm
(0.145 in. ± 0.010 in.)
Short pins: 2.79 mm ± 0.25 mm
(0.110 in. ± 0.010 in.)
Negative Logic On/Off
6
Lineage Power
8
1
15
JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
Data Sheet
March 27, 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
Note: 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)
D000-c.cvs
Figure 23. Longitudinal Heat Sink
D000-d.cvs
Figure 24. Transverse Heat Sink
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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.
March 27, 2008
FDS02-038EPS (Replaces FDS02-037EPS )
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