Data Sheet
September 2002
JBW030-S eries Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
The JBW030-Series Power Modules use advanced, surface-
mount technology and deliver high-quality, compact,
dc-dc conversion at an economical price.
Features
■Small size: 61.0 mm x 57.9 mm x 12.7 mm
(2.40 in. x 2.28 in. x 0.50 in.)
■Low output noise
■Constant frequency
■Industry- standard pinout
■M e ta l case
■Case ground pin
■2:1 input voltag e range
■Overcurrent protection
■Outp ut overvoltage protection
■Remote on/off
■Remote sense
■Adjustable output voltage: 80% to 110% of VO, nom
■
UL
*
60950 Recognized,
CSA
† C22.2 No. 60950-00
Certif ied, and EN 60950 (VDE0805):2001-12
Licensed
■CE m ark m ee ts 73/23/EE C a nd 93/6 8/E EC
directives‡
■Within FCC Class A radiated limit s
Description
The JBW030-Series Power Modules are dc-dc conv erters that operate o ver an input vol tage r ange of 36 Vdc to
75 Vdc and provid e 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 fu ll-load efficiency of up to 82% (5 Vout).
These power modules feature remote on/off, remote sense, and output voltage adjustm ent, (80% to 110% of
the nominal output voltage). The modules are PC board-mountabl e, encapsulated in metal cases, and are rated
to fu ll load at 100 °C ca se temperature. No exter nal filtering is required.
*
UL
is a registered trademark of U nderwriters La boratories, Inc.
†
CSA
is a registered trademark of Canadi an Standards Association.
‡ This product is intended for integration into end-use equipment. All the required procedures f or CE marking of end-use equipment sho ul d
be followed. (The CE mark is placed on selected products.)
Applications
■Distributed power architectures
■Communication s equipm ent
■Workstations / Computer equipment
Options
■Heat sinks availa ble for extended operation
■Choice of remote on/off logic configuration
■Shor t pins: 2.79 mm ± 0.25 mm
(0.110 in. ± 0.010 in.)
■Shor t pins: 3.68 mm ± 0.25 mm
(0.145 in. ± 0.010 in.)
2Tyco Electronics Corp.
Data Sheet
September 2002
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Absolute Maximum Ratings
Stresses in e x cess of the absolute maximum ratings can cause permanent damage to the de vice. These are abso-
lute 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 maximu m ratings for extended
period s can ad versely affect device r eliab ilit y.
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Table 1 . Input Specifications
Fusing Consideration s
CAUTION: This power module is not internally fused. An input li ne fuse must always be used.
This encapsulate d power modul e can be used in a wide varie ty of applications, ranging from simple stand-alone
operation to an integrated part of a sophisticate d power architecture. To preser ve maximum flexibility, internal fus-
ing is not included; how ever, to achieve maximum saf ety and system protection, alwa ys use an input line fuse. The
saf ety agencies require a fast-acting fuse with a maximum rating of 5 A (see Safety Considerat ions 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 t o the fuse manufacturer’s data for fur t her infor m ation.
Parameter Symbol Min Max Unit
Input Voltage Continuous VI—80Vdc
Operating Case Temperatu re
(See The rm al Considerations section.) TC–40 100 °C
Storage Temperature Tstg –40 110 °C
I/O Isolation Voltage:
Continuous
Transient —
——
—500
1500 Vdc
Vdc
Parameter Symbol Min Typ Max Unit
Operating Input Vo ltage VI36 48 75 Vdc
Maximum Input Current
(VI = 0 V to 75 V; IO = IO, max; see Figure 1.) II, max ——1.6A
Inrush Trans ient i2t——0.2A
2s
Input Reflected-ripple Current, Peak -to-pea k
(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
Tyco Electronics Corp. 3
Data Sheet
September 2002 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Electrical Specifications (continued)
Table 2. Output Specifications
Parameter Dev ice Code or
Code Suffix Symbol Min Typ Max Unit
Output Voltage Set Po int
(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 temper ature
conditions until end of life. See
Figure 13.)
JBW030F
JBW030A VO
VO3.20
4.85 —
—3.40
5.15 Vdc
Vdc
Output Regulation:
Line (VI = 36 V to 75 V)
Load (IO = I O, min to I O, max)
Temperature
(TC = –40 °C to +100 °C)
All
All
JBW030F
JBW030A
—
—
—
—
—
—
—
—
0.01
0.05
0.75
0.5
0.1
0.2
1.5
1.5
%VO
%VO
%VO
%VO
Output Ripple and Noise Voltag e
(See Figure 12.):
RMS
Pea k-to-peak (5 Hz to 20 MHz) 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
IO0.6
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
η75
79 78
82 —
—%
%
Switching Frequency All — — 300 — kHz
Dynamic Response
(∆IO/∆t = 1 A/10 µs, VI = 48 V,
TC = 25 °C; see Figu res 6 — 9.):
Load Change from IO = 50% to 75%
of IO, max:
Pea k Deviation
Settling Time
(VO < 10% peak deviation)
Load Change from IO = 50% to 25%
of IO, max:
Pea k Deviation
Settling Time
(VO < 10% of peak deviation)
JBW030F
JBW030A
All
JBW030F
JBW030A
All
—
—
—
—
—
—
—
—
—
—
—
—
5
2
0.5
5
2
0.5
—
—
—
—
—
—
%VO, s et
%VO, s et
ms
%VO, s et
%VO, s et
ms
44 Tyco Electronics Corp.
Data Sheet
September 2002
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Electrical Specifications (continued)
Table 3. Isolat ion Specifications
General Specifications
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 Min Typ Max Unit
Isolation Capacitance — 2500 — pF
Isolation Resistance 10 — — MΩ
Parameter Min Typ Max Unit
Calculated MTBF (IO = 80% of IO, max ; TC = 40 °C) 4,370,000 hours
Weigh t — — 113 (4.0) g (oz.)
Parameter Device Code or
Code Suff ix Symbol Min Typ Max Unit
Remote On/Off
(VI = 36 V to 75 V; open collector or
equivalent compatibl e; s ignal referenced to
VI(–) term inal. See Figure 14 and Feature
Descriptions.):
JW030x1-M Negativ e Logic:
Logic Low—M odule On
Logic High— Mo dule Off
JW 030x-M Positive Lo gic:
Logic Low—M odule Off
Logic High— Mo dule On
Module Specifications:
On/ Off Current—Log ic Low
On/Off Voltage:
Logic Low
Logic High (Ion/off = 0)
Open Coll ector Switch Specifications:
Leak age Current Dur ing Logic High
(Von/off = 10 V)
Out put Low Voltage Dur ing 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.)
Out put Vo ltage Overshoot
All
All
All
All
All
All
All
Ion/off
Von/off
Von/off
Ion/off
Von/off
—
—
—
–0.7
—
—
—
—
—
—
—
—
—
—
80
0
1.0
1.2
15
50
1.2
150
5
mA
V
V
µA
V
ms
%
Output Voltage S ense Range All — — — 1 0 %VO, nom
Out put Voltage Set-point Adjustment Range
(See Feature Descriptions.) All — 80 — 110 %VO, nom
Output Overvoltage Protection (clamp) JBW030F
JBW030A VO, clamp
VO, clamp 4.0
5.6 —
—5.7
7.0 V
V
Tyco Electronics Corp. 5
Data Sheet
September 2002 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Characteristic Curves
1-0763
Figure 1. Typical Input Cha racteristic s
1-0727
Figure 2. JBW030A Typical Output Characteristics
1-0726
Figure 3. JBW030F Typical Output Characteristics
1-0760
Figure 4. JBW030F Typical Converter Efficiency
v s. Ou tput C ur re nt
0
0.2
0.4
0.6
0.8
1
1.2
30 35 40 45 50 55 60 65 70 75
INPUT VOLTAGE
,
V
I
(
V
)
INPUT CURRENT, I
I
(A)
I
O
= 6 A
I
O
= 3 A
I
O
= 0.5 A
0
1
2
3
4
5
6
0246810
OUTPUT CURRENT, I
O
(
A
)
OUTPUT VOLTAGE, V
O
(V)
V
I
= 36 V
V
I
= 48 V
V
I
= 75 V
0
0.5
1
1.5
2
2.5
3
3.5
01234567891011
OUTPUT CURRENT, I
O
(A)
OUTPUT VOLTAGE, V
O
(V)
V
I
= 36 V
V
I
= 48 V
V
I
= 75 V
50
55
60
65
70
75
80
85
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5
OUTPUT CURRENT, I
O
(A)
EFFICIENCY, η (%)
V
I
= 36 V
V
I
= 48 V
V
I
= 75 V
6Tyco Electronics Corp.
Data Sheet
September 2002
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Characteristic Curves (continued)
1-0878
Figure 5. JBW030ATypical Conver ter Efficiency
vs. Output Current
1-0879
Figure 6. JBW030F Typical Output Voltag e for a
Ste p Load C hang e from 5 0% to 75 %
1-0880
Figure 7. JBW030A Typical Output Volt age for a
Step Load Change fr om 50% to 75%
1-0881
Fi gure 8. JB W030F Typi ca l Out put Vo ltage for a
Step Load Change fr om 50% to 25%
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
0123456
OUTPUT CURRENT
,
I
O
(
A
)
EFFICIENCY η (%)
V
I
= 36 V
V
I
= 48 V
V
I
= 75 V
TIME, t (0.2 ms/div)
OUTPUT CURRENT,
IO (2 A/div) OUTPUT VOLTAGE,
VO (50 mV/div)
TIME, t (0.2 ms/div)
OUTPUT CURRENT,
IO (2 A/div) OUTPUT VOLTAGE,
VO (50 mV/div)
TIME, t (0.2 ms/div)
OUTPUT CURRENT,
IO (2 A/div) OUTPUT VOLTAGE,
VO (50 mV/div)
Tyco Electronics Corp. 7
Data Sheet
September 2002 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Characteristic Curves (continued)
1-0882
Figure 9. JBW030A Typical Outpu t Voltage for a
Ste p Load C hang e from 5 0% to 25 %
8-733a
Figure 10. Typical Output Voltage Start-Up when
S igna l Ap p l ied to R e mote O n/Off
Test Configurations
8-489(C)
No te: I np ut r ef lec t e d- r i pp le curr e nt is measu red wi th a simula ted
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
8-513(C)
Note:Use a 0.1 µF ceramic capacitor. Scope measurement should
be made using a BNC socket. P osition the load between
50 m m and 75 mm ( 2 in. and 3 in.) from the module.
Figure 12. Peak-to-Peak Output Noise
Measurement Test Setup
8-749(C).a
No te:All me as u r em en ts are t ake n at the mo du le te r mina ls. When
soc keting, place Kelvin c onnections at module terminals to
avo id me a su r em e nt er rors due to socket con t ac t r es is ta nce.
Figure 13. Output Voltage and Efficiency
Measurement Test Setup
TIME, t (0.2 ms/div)
OUTPUT CURRENT,
IO (2 A/div) OUTPUT VOLTAGE,
VO (50 mV/div)
TIME, t (10 ms/div)
REMOTE ON/OFF,
Von/off (5 V/div) OUTPUT VOLTAGE,
VO (%VO, set)
100
80
40
TO OSCILLOSCOPE
CS 220 µF
IMPEDANCE < 0.1
@ 20 ˚C, 100 kHz
VI(+)
VI
(-)
LTEST
BATTERY
12 µH
Ω
CURRENT
PROBE
VO(+)
VO(–)
RESISTIVE
LOAD
SCOPE
COPPER STRIP
0.1 µF
VI(+)/CASE
IIIO
SUPPLY
CONTACT
RESISTANCE
CONTACT AND
DISTRIBUTION LOSSES
LOAD
SENSE(+)
VI(–)
VO(+)
VO(–)
SENSE(–)
ηVO(+) VO(–)–[] IO
VI(+) VI(–)–[] II
-----------------------------------------------------
100×=%
8Tyco Electronics Corp.
Data Sheet
September 2002
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Design Considerations
Grounding Considerations
The case is not connected inter nally to allow the user
flexibility in grounding.
Input Source Impedance
The power module should be connected to a low ac -
impedance inp ut source. Highly induct ive so urce
impedances c an affect the stability of the p ower mod-
ule. A 33 µF electrolytic capacitor (ESR < 0.7 Ω at
100 kHz) mounted clos e to the powe r module helps
ensure stability of the unit. (See Fig ure 11.)
Safety Considerations
For safety-agenc y approval of the system in which the
power module is used, the po wer 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 inp ut source is non-SELV (ELV or a hazardous
vol tage greater than 60 Vdc and less than or equal to
75 Vdc), for the module's output to be considered
meeting the requiremen ts of safety extra-low voltage
(SELV ), all of the following must be true:
■The input source is to be provided w ith reinforced
insulation from any other hazardous voltages , includ-
ing 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 oper ator acces-
sible.
■Another SELV reliability test is conducted on the
whole system, as required by the safety agencies, on
the combinat ion of supply source and the subje ct
module to verify that under a single fault, hazardous
voltages do not appear at the modul e's output.
Note: Do not ground either of the input pins of the
module without grounding one of the output
pins. This may all ow a non-S ELV voltage to
appear between the output pins and ground.
The power module has ext ra-low voltage (ELV) outputs
when all inputs are ELV.
The input to these units is to be provided with a maxi-
mum 5 A fast-acting fuse in the ungrounded lead.
Feature Descriptions
Overcurrent Protection
To provide protection in a fault (output overload) condi-
tion, the unit is e quippe d with internal current-limiting
circuitr y and ca n endure curren t limiting for an unlim-
ited duration. At the point o f current-limit inception, the
unit shifts from voltage control to current control. If the
output voltage is pul led very low during a severe fault,
the current-limit circuit can exhibit either foldback or
tailout characteristics (output current decrease or
incre ase). The unit operates norm ally once the output
current is brought back into its specif ied range.
Remote On/Off
Two remote on/off options are a vailabl e. Positive logic
remote on/o ff tur ns the module on during a logic-high
voltage on the REMOT E ON/OFF pin, and off during a
logic low. Negative l ogic remote on/off turns the module
off during a logic high and on during a logic low. Nega-
tive logic , device code suffix “1,” is the f actory-pref erred
configuration.
To turn the power module on and off , the user must
supply a switch to control the vol tage between the
on/off terminal and the VI(–) termina l (Von/off). The
switch can be an open colle ctor or equivalent (see Fig-
ure 14). A logic low is Von/off = –0.7 V to 1.2 V, during
whi c h th e m od u l e is off. T h e m a x i mu m Ion/off dur ing a
lo gic low is 1 m A . Th e switc h sho uld maintain a log ic -
low voltage w h ile s in k ing 1 mA.
During a logic high, the maximum V on/off gene rated by
the po wer module is 15 V. The maximum allowable
leakage c urrent of the sw i tch at Von/off = 15 V is 50 µA.
The mod ule has internal capacitanc e to reduce noise
at the ON/O FF pin. Additional capacitance is not gen -
erally needed and may degrade the start-up character-
istics of the module.
CAUTION: T o avoid damaging the power module or
external on/off circuit, the connection
between the VI(–) pi n and the in pu t
source must be made before or simulta-
neou sly to making a connection
between the ON/OFF pin and the input
source (either directly or thro ug h the
external on/off circuit.)
Tyco Electronics Corp. 9
Data Sheet
September 2002 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Feature Descriptions (continued)
Remote On/Off (continued)
8-720(C).h
Figure 14. Remote On/Off Implementation
Remote Sense
Remote sense minimizes the effects of distributi on
losses by regulati ng the voltage at the remote-sense
connections. The voltage between the remote-sense
pins and the output term inal s must not exceed the out-
put voltage sense range given in the Feature Specifica-
tions table, i.e.:
[VO(+) – VO(–) ] – [SENSE(+ ) – SENSE(–) ] ≤ 0.2 V
The voltage between the VO(+) and VO(–) term inals
must not exceed the minimum output ove rvo ltage shut-
down v oltage as indicated in the Feature Specifications
table. This limit includes any increase in voltage due to
remote-sense com pens ation and output voltage set-
point adjustment (trim ). See Figure 15.
If n ot using the remote-sense feature to regulate the
output at the point of loa d, then connect SE NSE(+) to
VO(+) and SENSE (–) to VO(–) at th e module.
8-651(C).m
Figu re 15 . E ffect i ve Circui t Conf i gurat io n for
Single-Modu le Remo te-Sense Op erati on
Output Voltage Set-Point Adjustment
(Trim)
Outp ut voltage tr im allow s the user to increase or
decrease the output v oltage set point of a module. This
is accom plished by connect ing an external resistor
between the TRIM pin and either the SENSE(+) or
SENS E(–) pins. With an external resistor between the
TRIM and SENSE(–) pins (Radj-down), the output volt age
set poin t (VO, adj) decreases (see Figur e 16). The follow-
ing equation determines the required e xt ernal-resistor
value to obtain an outp ut voltage change of % ∆.
Fo r example, to lower the output voltage by 2 0%, the
external resistor value must be:
Wit h an external resistor connected between the TRIM
and SENSE(+) pins (Radj-up), the output voltage se t
point (VO, adj) increases (see Figure 17). The following
equations determine the required exte rnal-resistor
value to obtain an outp ut voltage change of % ∆.
JBW030A:
Fo r example, to increase the output voltage of the
JBW030A by 5%, the ex ternal resistor value must be:
JBW030F:
Fo r example, to increase the output voltage of the
JBW030F by 5% , the external resistor must be :
+
Ion/off
–
Von/off
REMOTE
ON/OFF
VI(+)
VI(-) SENSE(+)
SENSE(–)
VO(+)
VO(–) LOAD
VO(+)
SENSE(+)
SENSE(–)
VO(–)
VI(+)
VI(-)
IOLOAD
CONTACT AND
DISTRIBUTION LOSSES
SUPPLY II
CONTACT
RESISTANCE
Radj-down 1%
∆
–
%∆
-------------------
10 kΩ=
Radj-down 10.2–
0.2
-----------------
10 kΩ40.00 kΩ==
Radj-up VO, nom
2.5
------------------1–
1%∆+
%∆
-------------------
10 kΩ=
Radj-up 12.0
2.5
----------- 1–
10.05+
0.05
---------------------
10 kΩ798 kΩ==
Radj-up VOnom,
1.235
------------------- 1–
1%∆+
%∆
-------------------
10 kΩ=
Radj-up 2
1.235
---------------1–
10.05+
0.05
---------------------
10 kΩ130 kΩ==
10 Tyco Electronics Corp.
Data Sheet
September 2002
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Feature Descriptions (continued)
Output Voltage Set-Point Adjustment
(Trim) (continued)
The combination of the output voltage adjustment and
sense range and the output voltage given in th e Fea-
ture Specifications table ca nnot exceed 110% of the
nominal output voltage between the VO(+) and VO(–)
terminals.
The JBW030-Series Power Module s have a fi xed cur-
rent-limit set point. Therefore, as the output volta ge is
adjusted down, the ava ilable o utp ut power is reduced.
In addition, the minimum output current is a function of
the output voltage. As the output voltage is adjusted
down, th e minimum required out put current can
increase.
8-748(C)b
Figure 16. Circuit Configu ration to Decrease
Output Voltage
8-715(C)b
Figure 17. Cir cuit Configuration to Increase Output
Voltage
Output Overvoltage Protection
The out put overvo ltage clamp consist s of control cir-
cuitr y, independent of the primar y regula tion loop, that
moni tors the voltage on the output ter m inal s. Th e con-
trol loop of the clamp has a higher voltage set point
than the prim ary loop (see Feature Specificat ions
table). This provides a redundant voltage-control that
reduces the risk of output overvoltage .
VI(+)
VI(–)
ON/OFF
CASE
VO(+)
VO(–)
SENSE(+)
TRIM
SENSE(–) Radj-down
RLOAD
VI(+)
VI(–)
ON/OFF
CASE
VO(+)
VO(–)
SENSE(+)
TRIM
SENSE(–)
Radj-up RLOAD
Tyco Electronics Corp. 11
Data Sheet
September 2002 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Thermal Considerations
The JBW030-Series Power Module s are designed to operate in a variety of th ermal environments. As with any
electronic compo nent , sufficient cooling must be provided to help ensure reliable operation. Heat-dissipating com-
ponents inside the module are thermally coupled to the case to enable heat remov al by conduction, convect ion,
and radiation to the surroun ding environment.
The ther m al data presented is based on mea suremen ts taken in a wind tunnel. The test setup shown in Figure 18
was used to colle ct data fo r Figure 21.
The grap hs in Figures 19 and 20 provide general guid elines for use. Actual perfo rm anc e can var y dependin g on
the particular applic ation en vironment. The maximum case temperature of 100 °C must not be exceeded.
8-1046(C)
Note: Dimensions are in millimeters and (inches).
Figure 18. Thermal Te st Setup
Ba sic Thermal Performance
The JBW030-Series Power Module s are construc ted with a specially designed, heat spreading enclo su re. As a
result, full-load operation in natural conv ection at 50 °C can be achieved without the use of an external heat sink.
Higher ambien t temperatures can be sustained by incre asing the airflow o r by adding a heat sink. As stated, this
data is based on a maximum case tempe rature of 100 °C and measured in the test configuration shown in
F igur e 18.
76.2
(3.00)
101.6
(4.00)
203.2 (8.00)
AIRFLOW
MEASURE CASE
TEMPERATURE (TC) AT
CENTER OF UNIT
CONNECT ORS TO
LOADS, POWER
SUPPLIES, AND
DATALOGGER,
6.35 (0.25) TALL
19.1 (0.75)
12.7 (0.50)
AIR VELOCITY
AND AMBIENT
TEMPERATURE
MEASURED
BELOW THE
MODULE
AIR-
FLOW
WIND TUNNEL
WALL
203.2
(8.00)
Data Sheet
September 2002
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
12 Tyco Electronics Corp.
Thermal Considerations (continued)
Forced Convection Cooling
To deter m ine the necessary airflow, deter m ine the
power dissipated by the uni t for the par tic ular applica-
tion. 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 air-
flow can be chosen from the derating curves in
Figure 21. For ex ample, if the JBW030A dissipates 6.2
W, the minimum airflow in a 80 °C environment is
1 ms–1 (200 ft./min.).
1-0762
Figure 19. JBW03 0F Power Dissipati on vs.
Outp ut C ur rent
1-0761
Figure 20. JBW03 0A Pow er Diss ipation vs.
Outp ut C ur rent
8-1051(C)
Fig ure 21. Forced Convectio n Power Derati ng with
No Heat Sink; Either Orientation
Heat Sink Select ion
Sev eral heat sinks are a vail able f or t hese modules. The
case includes through-threaded mounting holes allo w-
ing attachm ent 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.).
Figure 22 shows the case-to-ambient ther m al resis-
tance, θ (°C/W), for t hese m odules. These cur ves can
be used to predict which heat sink will be needed for a
part icular environment. For example, if the JBW030A
dissipates 7 W of heat in an 80 °C en vironment with an
airflow of 0.7 ms–1 (130 ft./min.), the minimum heat
sink required can be determined as follows:
where: θ= modu le’s total thermal resistance
TC, max = case temperature (See Figure 18.)
TA= inlet ambient temperature
(See Figure 18. )
PD= power diss ipation
θ ≤ (100 – 80)/7
θ ≤ 2.9 °C/W
From Figure 22, the 1/2 in. high heat si nk or gre ater is
required.
OUTPUT CURRENT, IO
(
A
)
POWER DISSIPATED, PD (W)
0
1
2
3
4
5
6
7
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5
VI = 36 V
VI = 48 V
VI = 75 V
0
1
2
3
4
5
6
7
8
0123456
OUTPUT CURRENT
,
IO
(
A
)
POWER DISSIPATED, PD (W)
VI = 75 V
VI = 48 V
VI = 36 V
30 40 50 60 70 100
0
5
6
7
8
LOCAL AMBIENT TEMPERATURE, T
A (˚C)
4
3
2
1
80 90
2.0 ms-1
(400 ft./min.)
1.0 ms-1
(200 ft./min.)
0.5 ms-1 (100 ft./min.)
NATURAL
CONVECTION
9
POWER DISSIPATION, PD (W)
θTCmax TA–,()PD⁄≤
Tyco Electronics Corp. 13
Data Sheet
September 2002 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Thermal Considerations (continued)
Heat Sink Selection (continued)
8-1052(C).a
Figure 22. Case-to-Amb ient The rmal Resistance
vs. Air Velocity Curves; Either
Orientation
Althoug h the previous example uses 100 °C as the
maximu m case temperatu re, fo r extremely high reliabil-
ity applications, one can use a lower temperature for
TC, max.
It is impor tant 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, th e case-to-am bient
thermal resistances shown will gener ally be lower than
the resistance of the heat sink by i tself. The data in Fig-
ure 22 was taken with a ther ma lly conductive dr y pad
between the case and the heat sink to minimize contact
resistance (typically 0.1 °C/W to 0.3 °C/W).
For a more detailed exp lanation of ther m al energy
manag eme nt for this series of power modules as well
as more details on availab l e heat sinks, please request
the following technical note:
Therm al Energy Manage-
ment for JC- and JW-Series 30 Watt Board-Mounted
Power Modules
(TN97-016EPS).
Layout Considerations
Copper paths must not be routed beneath the pow er
module standoffs.
0 0.25
(50) 0.51
(100) 0.76
(150) 1.02
(200) 1.78
(350) 2.03
(400)
0
5
6
7
8
AIR VELOCITY, ms
-1
(ft./min.)
4
3
2
1
1.27
(250) 1.52
(300)
NO HEAT SINK
1/4 in. HEAT SINK
1/2 in. HEAT SINK
1 in. HEAT SINK
1 1/2 in. HEAT SINK
CASE-TO-AMBIENT THERMAL
RESISTANCE, θ
CA
(˚C/W)
14 Tyco Electronics Corp.
Data Sheet
September 2002
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Outline Diagram
Dim e ns io ns a r e in mi llimet e r s and (inc h es).
Tolerances: x.x ± 0.5 mm ( 0.02 in.), x.xx ± 0.25 mm (0.010 in.).
8-716(C)
Top View
Side View
Bottom View
57.9 (2.28) MAX
61.0
(2.40)
MAX
V
I
(-)
ON/
OFF
CASE
+ SEN
TRIM
- SEN
V
I
(+)
V
O
(-)
V
O
(+)
0.51 (0.020)
5.1 (0.20)
MIN
12.7 (0.50)
MAX 1.02 (0.040) DIA
SOLDER-PLATED
BRASS,ALL PINS
10.16
(0.400) 17.78
(0.700)25.40
(1.000)35.56
(1.400)
5
6
7
8
9
MOUNTING INSERTS
M3 x 0.5 THROUGH,
4 PLACES
10.16
(0.400)
25.40
(1.000)
50.8
(2.00)
35.56
(1.400)
5.1 (0.20)
4
3
2
1
12.7 (0.50) MAX
4.8
(0.19)
48.26 (1.900)
TERMINALS
48.3 (1.90)
STANDOFF,
4 PLACES
7.1 (0.28)
7.1
(0.28)
MOUNTING HOLES
Pin marking designation
is shown for reference onl
y
Tyco Electronics Corp. 15
Data Sheet
September 2002 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Recommended Hole Pa ttern
Component-s ide footprint.
Dim e ns io ns a r e in mi llimet e r s and (inc h es).
8-716(C)
Ordering Information
Please contact your Tyco Electronics’ Account Manager or Field Application Engineer for pricing and availability.
Table 4. Device Codes
Table 5. Device Op tions
Input
Voltage Output
Voltage Output
Power Remote On/
O ff Lo gi c Device
Code Comcode
48 V 3.3 V 21.5 W Positive JBW030F 108966078
48 V 3.3 V 21.5 W Negative JBW030F1 108975418
48 V 5 V 30 W Positive JBW030A 108966086
48 V 5 V 30 W Negative JBW030A1 108970203
Option De vice Code Suffix
Short pins: 3.68 mm ± 0.25 mm
(0.145 in. ± 0.010 in.) 6
Short pins: 2.79 mm ± 0.25 mm
(0.110 in. ± 0.010 in.) 8
Negative Logic On/Off 1
10.16
(0.400)
10.16
(0.400)
25.40
(1.000)
35.56
(1.400)
12.7 (0.50)
MAX
4.8
(0.19)
MODULE OUTLINE
5.1 (0.20)
48.26 (1.900)
TERMINALS
48.3 (1.90)
50.8
(2.00) 17.78
(0.700)
25.40
(1.000)
35.56
(1.400)
1
2
3
45
6
7
8
9
MOUNTING INSERTS
Data Sheet
September 2002
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Printed on
Recycled Paper
World Wide Headquarters
Tyco Electronics Power Systems, Inc.
3000 S kyline Drive, Mesquite, TX 75149 , USA
+1-800-526-7819 FAX: +1-888-315-5182
(Outside U.S.A.: +1-972-284-2626, FAX: +1-972-284-2900)
www.power.tycoelectronics.com
e-m ail : te chsupport1@tycoe lectroni cs.com
Tyco Electronics Corporation reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application.
No rights under any patent accompany the sale of any such product(s) or information.
© 2001 Tyco Electronics Power Systems, Inc. (Mesquite, Texas) All International Rights Reserved.
Pri nted in U. S.A.
September 2002
FDS02-037EPS (Replaces ADS02-010EPS)
Europe, Mid dl e- E ast an d Africa Headquarters
Tyco Elec tronics ( UK ) Ltd
Tel: +44 (0) 1344 469 300, Fax: +44 (0) 1344 4 69 301
Central America-Latin America Headquarters
Tyco Electronics Power Systems
Tel: +54 11 4316 2866, Fax: +5 4 11 4312 9508
Asia-Pacific Headquar ters
Tyco Elec tronics Si ngapore Pte Ltd
Tel: +65 48 2 0311, Fax: 65 480 929 9
Ordering Information (continued)
Table 6. Device Accessories
Note: Dimensions are in millimeters and (inches).
D000-c.cvs
Figure 23. Longitudinal Heat Sink
D000-d.cvs
Figure 24. Tran sverse Heat Sink
Accessory Comcode
1/4 in. transverse kit (heat sin k, therm al pad, and s crews) 407243989
1/4 in. longitudinal kit (heat sink, thermal pad, and screws) 407243997
1/2 in. transverse kit (heat sin k, therm al pad, and s crews) 407244706
1/2 in. longitudinal kit (heat sink, thermal pad, and screws) 407244714
1 in. transverse kit (heat sink, thermal pad, and screws) 407244722
1 in. longitudinal kit (heat sink, thermal pad, and scre ws) 407244730
1 1/2 in. transverse kit (hea t sink, ther ma l pad, and screws) 407244748
1 1/2 in. longitudinal kit (heat sink , ther mal pad, and screws) 407244755
57.9 (2.28)
61
(2.4)
1 IN.
1 1/2 IN.
1/4 IN.
1/2 IN.
1 IN.
1 1/2 IN.
61 (2.4)
1/4 IN.
1/2 IN.
57.9
(2.28)
