Lineage Power JHW350R41 18 - 36vdc or 36 - 75vdc input; 28vdc output; 350w Datasheet

Data Sheet
March 26, 2008
JHC/JHW350 Series Power Modules; dc-dc Converter
18-36Vdc or 36-75Vdc Input; 28Vdc Output; 12.5A
RoHS Compliant
Features
ƒ
Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
ƒ
Compliant to ROHS EU Directive 2002/95/EC with
lead solder exemption (non-Z versions)
ƒ
High efficiency – 93.5% at 28V full load
ƒ
Industry standard pin-out
ƒ
Improved Thermal Performance: Full
output power with case temperature (Tc) of 85°C
ƒ
High power density: 128 W/in3
ƒ
Low output ripple and noise
ƒ
Industry standard Half brick:
57.9 mm x 61.0 mm x 12.7 mm
(2.28 in x 2.4 in x 0.5 in)
Applications
ƒ
Distributed power architectures
ƒ
Wireless Networks
ƒ
RF Amplifier
Options
ƒ
Positive Remote On/Off logic
ƒ
Auto restart after fault shutdown
ƒ
Single tightly regulated output
ƒ
Remote sense
ƒ
2:1 input voltage range
ƒ
Constant switching frequency
ƒ
Negative Remote On/Off logic
ƒ
Output over current/voltage protection
ƒ
Overtemperature protection
ƒ
Output voltage adjustment
ƒ
Wide operating temperature range (-40°C to 85°C)
ƒ
ISO** 9001 certified manufacturing facilities
ƒ
UL60950-1 Recognized, CSA† C22.2 No. 60950-103 Certified, and EN 60950-1 (VDE‡ 0805): 2001-12
Licensed
ƒ
CE mark meets 73/23/EEC and 93/68/EEC
directives§ (JHW series only)
Description
The JHC/JHW-series dc-dc converters are a new generation of DC/DC power modules designed for maximum
efficiency and power density. The JHC/JHW series provide up to 350W output power in an industry standard Halfbrick, which makes it an ideal choice for high voltage and high power applications. The converter incorporates
synchronous rectification technology and innovative packaging techniques to achieve ultra high efficiency reaching
93.5% at 28V with full load. The 5-sided encapsulated case package allows for excellent thermal performance in
strict thermal environment. Threaded-through holes are provided to allow easy mounting or addition of a heatsink for
high-temperature applications. The JHC/JHW series power modules are isolated dc-dc converters that operate over
a wide input voltage range of 18 to 36 Vdc or 36 to 75 Vdc respectively and provide single precisely regulated
output. The output is fully isolated from the input, allowing versatile polarity configurations and grounding
connections. Built-in filtering for both input and output minimizes the need for external filtering.
* 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.
** ISO is a registered trademark of the International Organization of Standards
‡
Document No: DS03-089 ver. 1.3
PDF name: jhc_jhw350_series.ds.pdf
Data Sheet
March 26, 2008
JHC/JHW350 Power Module; dc-dc Converter
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
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 the device reliability.
Parameter
Device
Symbol
Min
Max
Unit
Input Voltage
JHC
VIN
-0.3
40
Vdc
Continuous
JHW
VIN
-0.3
80
Vdc
Transient (100ms)
JHC
VIN, trans
-0.3
50
Vdc
Transient (100ms)
JHW
VIN, trans
-0.3
100
Vdc
All
Tc
-40
100
°C
Storage Temperature
All
Tstg
-55
125
°C
I/O Isolation Voltage
All
⎯
⎯
1500
Vdc
Operating Ambient Temperature
(See Thermal Considerations section)
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Parameter
Operating Input Voltage
Device
Symbol
Min
Typ
Max
Unit
JHC
VIN
18
24
36
Vdc
JHW
VIN
36
48
75
Vdc
Maximum Input Current
JHC
IIN,max
23
Adc
(VIN=0V to 36V, IO=IO, max)/(VIN=0V to 75V, IO=IO, max)
JHW
IIN,max
11
Adc
Inrush Transient
All
2
2
As
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 12μH source impedance; VIN=0V to
75V, IO= IOmax ; see Figure 13)
All
7
15
mAp-p
Input Ripple Rejection (120Hz)
All
60
It
2
dB
Fusing Considerations
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This power module can be used in a wide variety of applications, ranging from simple standalone 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 20A for JHW series and 30A for JHC series(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 sheet for
further information.
LINEAGE POWER.
2
Data Sheet
March 26, 2008
JHC/JHW350 Power Module; dc-dc Converter
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
Electrical Specifications (continued)
Parameter
Output Voltage Set-point
(VIN=VIN,nom, IO=IO, max, Tc =25°C)
Output Voltage
(Over all operating input voltage, resistive load,
and temperature conditions until end of life)
Device
R
R
Symbol
Min
Typ
Max
Unit
VO, set
27.5
28
28.5
Vdc
VO
27.16
⎯
28.84
Vdc
Output Regulation
Line (VIN=VIN, min to VIN, max)
All
⎯
0.02
0.1
%Vo
Load (IO=IO, min to IO, max)
All
⎯
0.05
0.2
%Vo
Temperature (Tc = -40°C to +100°C)
All
⎯
100
300
mV
RMS (5Hz to 20MHz bandwidth)
All
⎯
27
40
mVrms
Peak-to-Peak (5Hz to 20MHz bandwidth)
All
⎯
45
150
mVpk-pk
⎯
3600
μF
12.5
Adc
⎯
Adc
Output Ripple and Noise on nominal output
(VIN=VIN, nom and IO=IO, min to IO, max, CO=CO,min)
External Capacitance
(type electrolytic)
All
CO, max
1000
Output Current
R
Io
0
Output Current Limit Inception
R
IO, lim
⎯
JHC350R
13.5
92.5
Efficiency
VIN=VIN, nom, Tc=25°C
IO=IO, max , VO= VO,set
JHW350R
Switching Frequency
All
fsw
⎯
350
⎯
kHz
All
Vpk
⎯
2
⎯
%VO, set
All
ts
__
500
__
μs
All
Vpk
__
2
__
%VO, set
All
ts
⎯
500
⎯
μs
η
⎯
η
93.5
⎯
%
%
Dynamic Load Response
(ΔIo/Δt=1A/10μs; Vin=Vin,nom; Tc=25°C; Tested
with a 330 μF aluminum and a 1.0 μF tantalum
capacitor across the load.)
Load Change from Io= 50% to 75% of Io,max:
Peak Deviation
Settling Time (Vo<10% peak deviation)
Load Change from Io= 75% to 50% of Io,max:
Peak Deviation
Settling Time (Vo<10% peak deviation)
LINEAGE POWER
3
Data Sheet
March 26, 2008
JHC/JHW350 Power Module; dc-dc Converter
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
Isolation Specifications
Parameter
Symbol
Min
Typ
Max
Unit
Isolation Capacitance
Ciso
⎯
440
⎯
pF
Isolation Resistance
Riso
10
⎯
⎯
MΩ
General Specifications
Parameter
Calculated MTBF (IO=80% of IO, max, Tc =40°C,
airflow=1m/s(200LFM))
Weight
LINEAGE POWER.
Device
Min
All
Typ
Max
Hours
2,179,312
⎯
112 (3.95)
Unit
⎯
g (oz.)
4
Data Sheet
March 26, 2008
JHC/JHW350 Power Module; dc-dc Converter
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions for additional information.
Parameter
Device
Symbol
Min
Typ
Max
Unit
All
Ion/off
⎯
0.15
1.0
mA
All
Von/off
0.0
⎯
0.5
V
Logic High – (Typ = Open Collector)
All
Von/off
⎯
__
5
V
Logic High maximum allowable leakage current
All
Ion/off
⎯
⎯
50
μA
Tdelay = Time until VO = 10% of VO,set from either
application of Vin with Remote On/Off set to On or
operation of Remote On/Off from Off to On with Vin
already applied for at least one second.
R
Tdelay
⎯
40
⎯
ms
Trise = time for VO to rise from 10% of VO,set to 90%
of VO,set.
All
Trise
⎯
50
⎯
ms
Output Voltage Adjustment
(See Feature Descriptions)
Output Voltage Set-point Adjustment Range (trim)
All
Vtrim
90
__
110
%VO, nom
Output Voltage Remote-sense Range
(See Feature Descriptions)
All
Vsense
__
__
5
%VO, nom
Output Overvoltage Protection
R
VO, limit
31
__
38
V
All
Tref
⎯
110
⎯
°C
17.5
18
V
Remote On/Off Signal Interface
(VIN=VIN, min to VIN, max ; open collector or equivalent,
Signal referenced to VIN- terminal)
Negative Logic: device code suffix “1”
Logic Low = module On, Logic High = module Off
Positive Logic: No device code suffix required
Logic Low = module Off, Logic High = module On
Logic Low Specification
Remote On/Off Current – Logic Low
On/Off Voltage:
Logic Low
Turn-On Delay and Rise Times
(IO=IO, max)
Overtemperature Protection
(See Feature Descriptions)
Input Undervoltage Lockout
LINEAGE POWER
VIN, UVLO
Turn-on Threshold
JHC350R
Turn-off Threshold
JHC350R
15.5
16.5
V
Hysteresis
JHC350R
Turn-on Threshold
JHW350R
⎯
35
1
36
V
V
Turn-off Threshold
JHW350R
31
33
⎯
V
Hysteresis
JHW350R
---
2
---
V
5
Data Sheet
March 26, 2008
JHC/JHW350 Power Module; dc-dc Converter
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
Characteristic Curves
6
Io = 6.5A
4
Io = 0A
0
65
75
INPUT VOLTAGE, VO (V)
EFFICIENCY, η (%)
Figure 1. Typical Input Characteristic at Room
Temperature.
96
94
92
90
88
86
84
82
80
78
76
74
72
70
Figure 4. Typical Start-Up Using Remote On/Off,
negative logic, Co,ext = 330µF.
V i = 36V
V i = 48V
V i = 75V
0
1
2
3
4
5
6
7
8
9
10
11
12
OUTPUT CURRENT, IO (A)
Figure 2. Typical Converter Efficiency Vs. Output
current at Room Temperature.
VO (V) (50mV/div)
OUTPUT VOLTAGE,
13
TIME, t (200 μs /div)
Figure 5. Typical Transient Response to Step
Decrease in Load from 50% to 25% of
Full Load at Room Temperature and 52
Vdc Input; Co,ext = 330µF.
75 Vin
48 Vin
36 Vin
TIME, t (1μs/div)
Figure 3. Typical Output Ripple and Noise at Room
Temperature, Io = Io,max, Co,ext = Co,min = 330µF.
LINEAGE POWER.
TIME, t (10 ms/div)
VIN(V) (20V/div)
55
IO (A) (5A/div)
45
OUTPUT CURRENT INPUT VOLTAGE
35
VO (V) (500mV/div)
25
IO (A) (5A/div)
2
VON/OFF(V) (2V/div)
Io = 12.5A
8
VO (V) (10V/div)
10
OUTPUT CURRENT, OUTPUT VOLTAGE
INPUT CURRENT, IIN (A)
12
OUTPUT VOLTAGE, On/Off VOLTAGE
The following figures provide typical characteristics for the JHW350R (28V, 12.5A) at 25°C. The figures are identical
for either positive or negative Remote On/Off logic.
TIME, t (200μs /div)
Figure 6. Typical Transient Response to Step Increase
in Load from 50% to 75% of Full Load at Room
Temperature and 52 Vdc Input; Co,ext = 330µF.
6
Data Sheet
March 26, 2008
JHC/JHW350 Power Module; dc-dc Converter
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
Characteristic Curves
Io = 6.5A
5
Io = 0A
0
22
24
26
28
30
32
34
36
INPUT VOLTAGE, VO (V)
EFFICIENCY, η (%)
Figure 7. Typical Input Characteristic at Room
Temperature.
94
92
90
88
86
84
82
80
78
76
74
72
70
Figure 10. Typical Start-Up Using Remote On/Off,
negative logic, Co,ext = 330µF.
V i = 18V
V i = 24V
V i = 36V
0
1
2
3
4
5
6
7
8
9
10
11
12
OUTPUT CURRENT, IO (A)
Figure 8. Typical Converter Efficiency Vs. Output
current at Room Temperature.
VO (V) (50mV/div)
OUTPUT VOLTAGE,
13
TIME, t (500 μs /div)
Figure 11. Typical Transient Response to Step
Decrease in Load from 75% to 50% of
Full Load at Room Temperature and 24 Vdc Input;
Co,ext = 330µF.
36 Vin
24 Vin
18 Vin
TIME, t (1μs/div)
Figure 9. Typical Output Ripple and Noise at Room
Temperature, Io = Io,max, Co,ext = Co,min = 330µF.
LINEAGE POWER
TIME, t (20 ms/div)
VIN(V) (500mV/div)
20
VO (V) (10V/div)
18
OUTPUT VOLTAGE, INPUT VOLTAGE
16
VO (V) (500mV/div)
14
IO (A) (5A/div)
10
VON/OFF(V) (5V/div)
Io = 12.5A
15
VO (V) (10V/div)
20
OUTPUT CURRENT, OUTPUT VOLTAGE
INPUT CURRENT, IIN (A)
25
OUTPUT VOLTAGE, On/Off VOLTAGE
The following figures provide typical characteristics for the JHC350R (28V, 12.5A) at 25°C. The figures are identical
for either positive or negative Remote On/Off logic.
TIME, t (500μs /div)
Figure 12. Typical Transient Response to Step
Increase in Load from 50% to 75% of Full Load at
Room Temperature and 24 Vdc Input; Co,ext = 330µF.
7
Data Sheet
March 26, 2008
JHC/JHW350 Power Module; dc-dc Converter
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
Test Configurations
Design Considerations
Input Source Impedance
The power module should be connected to a low
ac-impedance source. Highly inductive source
impedance can affect the stability of the power
module. For the test configuration in Figure 13, a
200μF electrolytic capacitor (ESR<0.7Ω at 100kHz),
mounted close to the power module helps ensure the
stability of the unit. Consult the factory for further
application guidelines.
Output Capacitance
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.
Figure 13. Input Reflected Ripple Current Test
Setup.
Output capacitance and load impedance interact with
the power module’s output voltage regulation control
system and may produce an ’unstable’ output
condition for the required values of capacitance and
E.S.R.. Minimum and maximum values of output
capacitance and of the capacitor’s associated E.S.R.
may be dictated, depending on the module’s control
system. This series power module requires minimum
of 330µF output capacitance placed near output pins
to ensure stable operation in full range of load/line
conditions.
The process of determining the acceptable values of
capacitance and E.S.R. is complex and is loaddependant. Lineage Power provides Web-based tools
to assist the power module end-user in appraising
and adjusting the effect of various load conditions and
output capacitances on specific power modules for
various load conditions.
Note: Use a 1.0 µF ceramic capacitor and a 1000µF
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.
Figure 14. Output Ripple and Noise Test Setup.
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.
Figure 15. Output Voltage and Efficiency Test
Setup.
LINEAGE POWER.
8
Data Sheet
March 26, 2008
JHC/JHW350 Power Module; dc-dc Converter
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
Safety Considerations
All Versions - 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., UL60950, CSA C22.2
No. 60950-00, and EN 60950 (VDE 0805):2001-12.
“W” Versions only - For end products connected to –
48V dc, or –60Vdc nominal DC MAINS (i.e. central
office dc battery plant), no further fault testing is
required. *Note: -60V dc nominal battery plants are
not available in the U.S. or Canada.
All Versions - For all input voltages, other than DC
MAINS, where the input voltage is less than 60V dc, if
the input meets all of the requirements for SELV,
then:
ƒ
The output may be considered SELV. Output
voltages will remain within SELV limits even
with internally-generated non-SELV voltages.
Single component failure and fault tests were
performed in the power converters.
ƒ
One pole of the input and one pole of the
output are to be grounded, or both circuits are
to be kept floating, to maintain the output
voltage to ground voltage within ELV or SELV
limits.
“W” Versions only - For all input sources, other than
DC MAINS, where the input voltage is between 60
and 75V dc (Classified as TNV-2 in Europe), the
following must be meet, if the converter’s output is to
be evaluated for SELV:
ƒ
The input source is to be provided with
reinforced insulation from any hazardous voltage,
including the ac mains.
ƒ
One Vi pin and one Vo pin are to be reliably
earthed, or both the input and output pins are to
be kept floating.
ƒ
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.
fast-acting (or time-delay) fuse in the unearthed lead
for their respective versions.
Feature Descriptions
Overcurrent Protection
To provide protection in a fault output overload
condition, the module is equipped with internal
current-limiting circuitry and can endure current limit
for few seconds. If overcurrent persists for few
seconds, the module will shut down and remain latchoff. The overcurrent latch is reset by either cycling the
input power or by toggling the on/off pin for one
second. If the output overload condition still exists
when the module restarts, it will shut down again. This
operation will continue indefinitely until the
overcurrent condition is corrected.
An auto-restart option is also available.
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 (Von/off) and the VI (-)
terminal. The switch can be an open collector or
equivalent (see Figure 16). A logic low is Von/off = 0
V to 0.5 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 5 V. The
maximum allowable leakage current of the switch at
Von/off = 5V is 50 µA. If not using the remote on/off
feature, perform one of the following to turn the unit
on:
For negative logic, short ON/OFF pin to VIN(-).
For positive logic: leave ON/OFF pin open.
All Versions - The power module has ELV (extra-low
voltage) outputs when all inputs are ELV.
All flammable materials used in the manufacturing of
these modules are rated 94V-0.
Figure 16. Remote On/Off Implementation.
The input to these units is to be provided with a
maximum 20A (JHW series) and 30A (JHC series)
LINEAGE POWER
9
Data Sheet
March 26, 2008
JHC/JHW350 Power Module; dc-dc Converter
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
Feature Descriptions (continued)
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(-)] ≤5% of
Vo,nom.
The voltage between the Vo(+) and Vo(-) terminals
must not exceed the minimum output overvoltage
shut-down value 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
17. 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. 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.
With an external resistor between the TRIM and
SENSE(-) pins (Radj-down), the output voltage set
point (Vo,adj) decreases (see Figure 18). The
following equation determines the required externalresistor value to obtain a percentage output voltage
change of Δ%.
For output voltages: 28V
⎛ 100
⎞
Radj − down = ⎜
− 2 ⎟ KΩ
⎝ Δ%
⎠
Where,
Δ% =
Vo , nom − Vdesired
× 100
Vo , nom
Vdesired = Desired output voltage set point (V).
With an external resistor connected between the
TRIM and SENSE(+) pins (Radj-up), the output
voltage set point (Vo,adj) increases (see Figure 19).
The following equation determines the required
external-resistor value to obtain a percentage output
voltage change of Δ%.
For output voltages: 28V
⎛ Vo , nom * (100 + Δ % ) (100 + 2Δ %) ⎞
Radj − up = ⎜
−
⎟ KΩ
Δ%
1.225 * Δ %
⎝
⎠
Where,
Δ% =
Vdesired − Vo , nom
× 100
Vo , nom
Vdesired = Desired output voltage set point (V).
Figure 17. Effective Circuit Configuration for
Single-Module Remote-Sense Operation Output
Voltage.
Output Voltage Set-Point Adjustment (Trim)
Trimming 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.
LINEAGE POWER.
The voltage between the Vo(+) and Vo(-) terminals
must not exceed the minimum output overvoltage
shut-down value 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
17.
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.
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
10
Data Sheet
March 26, 2008
JHC/JHW350 Power Module; dc-dc Converter
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
Feature Descriptions (continued)
the module remains at or below the maximum rated
power.
⎛ 28 * (100 + 5) (100 + 2 * 5) ⎞
−
Radj − up = ⎜
⎟ KΩ
5
⎝ 1.225 * 5
⎠
Rtadj-up = 458kΩ
Output Overvoltage Protection
The output overvoltage protection consists of circuitry
that monitors the voltage on the output terminals. If
the voltage on the output terminals exceeds the over
voltage protection threshold, then the module will
shutdown and latch off. The latch is reset by either
cycling the input power for one second or by toggling
the on/off signal for one second. The protection
mechanism is such that the unit can continue in this
condition until the fault is cleared.
Figure 18. Circuit Configuration to Decrease
Output Voltage.
Overtemperature Protection
These modules feature an overtemperature protection
circuit to safeguard against thermal damage. The
circuit shuts down the module when the maximum
case reference temperature is exceeded. The module
will restart automatically when the case temperature
cools below the overtemperature shutdown threshold.
Input Undervoltage Lockout
At input voltages below the input undervoltage lockout
limit, the module operation is disabled. The module
will begin to operate at an input voltage above the
undervoltage lockout turn-on threshold.
Figure 19. Circuit Configuration to Increase
Output Voltage.
Examples:
To trim down the output of a nominal 28V module
(JHW350R) to 26.6V
Δ% =
28V − 26.6V
× 100
28V
∆% = 5
⎛ 100
⎞
Radj − down = ⎜
− 2 ⎟ KΩ
⎝ 5
⎠
Radj-down = 18 kΩ
To trim up the output of a nominal 28V module
(JHW350R) to 29.4V
Δ% =
28V − 29.4V
× 100
28V
Δ% = 5
LINEAGE POWER
11
Data Sheet
March 26, 2008
JHC/JHW350 Power Module; dc-dc Converter
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
Thermal Considerations
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 20.
Considerations include ambient temperature, airflow,
module power dissipation, and the need for increased
reliability. A reduction in the operating temperature of
the module will result in an increase in reliability. The
thermal data presented here is based on physical
measurements taken in a wind tunnel.
For reliable operation this temperature should not
exceed 100ºC threshold.
versus local ambient temperature (TA) for natural
convection through 2m/s (400 ft./min).
Note that the natural convection condition was
measured at 0.05 m/s to 0.1 m/s (10ft./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 21 is shown in the following example:
Example
What is the minimum case temperature must be
maintained to operate a JHW350R at Vin = 48 V, an
output power of 300W in longitudinal orientation.
Solution:
Given: VI = 48V
Po = 300W
Determine case temperature (Use Figure 21):
TC = 92 °C
MEASURE CASE
TEMPERATURE HERE (Tc)
ON/OFF
VO(+)
+ SEN
TRIM
30.5
(1.20)
CASE
VI(-)
- SEN
VO(-)
29.0
(1.14)
Figure 20. Metal Case (Tc ) Temperature
Measurement Location (top view).
OUTPUT POWER (W)
VI(+)
400
350
300
250
200
150
100
50
20
30
40
50
60
70
80
90
100 110
CASE TEMPERATURE, TC (°C)
Figure 21. Output Power Derating for JHC/JHW350R
(Vo = 28V) in Longitudinal Orientation; Airflow
Direction From Vin(–) to Vout(--); Vin = Vin, nom
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 Tc temperature of the power
modules is 100 °C, you can limit this temperature to a
lower value for extremely high reliability.
Please refer to the Application Note “Thermal
Characterization Process For Open-Frame BoardMounted Power Modules” for a detailed discussion of
thermal aspects including maximum device
temperatures.
Heat Transfer via Convection
Increased airflow over the module enhances the heat
transfer via convection. Following derating figures
shows the maximum output power that can be
delivered by each module in the respective orientation
without exceeding the maximum TC temperature
LINEAGE POWER.
12
Data Sheet
March 26, 2008
JHC/JHW350 Power Module; dc-dc Converter
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
Layout Considerations
The JHC/JHW power module series are encapsulated
aluminum case packaged style, as such; component
clearance between the bottom of the power module
and the mounting (Host) board is limited. Avoid
placing copper areas on the outer layer directly
underneath the power module. Also avoid placing via
interconnects underneath the power module.
For additional layout guide-lines, refer to
FLTR100V20 data sheet.
Post Solder Cleaning and Drying
Considerations
Post solder cleaning is usually the final circuit-board
assembly process prior to electrical board testing. The
result of inadequate 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 Lineage Power Board
Mounted Power Modules: Soldering and Cleaning
Application Note (AP01-056EPS).
Through-Hole Lead-Free Soldering
Information
The RoHS-compliant through-hole products use the
SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant
components. They are designed to be processed
through single or dual wave soldering machines. The
pins have an RoHS-compliant finish that is compatible
with both Pb and Pb-free wave soldering processes.
A maximum preheat rate of 3°C/s is suggested. The
wave preheat process should be such that the
temperature of the power module board is kept below
210°C. For Pb solder, the recommended pot
temperature is 260°C, while the Pb-free solder pot is
270°C max. Not all RoHS-compliant through-hole
products can be processed with paste-through-hole
Pb or Pb-free reflow process. If additional information
is needed, please consult with your Lineage Power
representative for more details.
LINEAGE POWER
13
Data Sheet
March 26, 2008
JHC/JHW350 Power Module; dc-dc Converter
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
Mechanical Outline for Through-hole Module
Dimensions are in millimeters and (inches).
Tolerances: x.x mm ± 0.5 mm ( x.xx in. ± 0.02 in.) [unless otherwise indicated]
x.xx mm ± 0.25 mm ( x.xxx in ± 0.010 in.)
57.9 (2.28)
TOP VIEW
61.0
(2.40)
SIDE LABEL*
2.06 (0.081) DIA
SOLDER-PLATED BRASS,
2 PLACES ( - OUTPUT AND
+ OUTPUT)
0.51 (0.020)
SIDE VIEW
1.02 (0.040) DIA
SOLDER-PLATED
BRASS, 7 PLACES
5.08 (0.20)
MIN
12.7 (0.50)
STANDOFF,
4 PLACES
7.1
(0.28)
5.1 (0.20)
7.3 (0.29)
BOTTOM VIEW
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)
4.7
(0.19)
48.3 (1.90)
*Side label includes Lineage Power name, product designation, and data code.
Option Feature, Pin is not present unless one these options specified
LINEAGE POWER.
14
Data Sheet
March 26, 2008
JHC/JHW350 Power Module; dc-dc Converter
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
Recommended Pad Layout for Through-Hole Modules
Dimensions are in millimeters and (inches).
Tolerances: x.x mm ± 0.5 mm ( x.xx in. ± 0.02 in.) [unless otherwise indicated]
x.xx mm ± 0.25 mm ( x.xxx in ± 0.010 in.)
LINEAGE POWER
15
Data Sheet
March 26, 2008
JHC/JHW350 Power Module; dc-dc Converter
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
Ordering Information
Please contact your Lineage Power Sales Representative for pricing, availability and optional features.
Table 1. Device Codes
Input Voltage
Output
Voltage
Output
Current
Efficiency
Connector
Type
48V (36-75Vdc)
28V
12.5A
93.5%
Through hole
Product codes
JHW350R1
Comcodes
108980749
48V (36-75Vdc)
28V
12.5A
93.5%
Through hole
JHW350R41
48V (36-75Vdc)
28V
12.5A
93.5%
Through hole
JHW350R41Z
108986548
24V (18-36Vdc)
28V
12.5A
92.5%
Through hole
JHC350R4
108987462
24V (18-36Vdc)
28V
12.5A
92.5%
Through hole
JHC350R41
108991634
24V (18-36Vdc)
28V
12.5A
92.5%
Through hole
JHC350R4Z
CC109129268
CC109129276
Table 2. Device Options
Option
Suffix
Negative remote on/off logic
1
Auto-restart
4
Unthreaded heatsink mounting holes
18
RoHS Compliant
Z
Asia-Pacific Headquarters
Tel: +65 6416 4283
World Wide Headquarters
Lineage Power Corporation
3000 Skyline Drive, Mesquite, TX 75149, USA
+1-800-526-7819
(Outside U.S.A.: +1-972-284-2626)
www.lineagepower.com
e-mail: [email protected]
Europe, Middle-East and Africa Headquarters
Tel: +49 89 6089 286
India Headquarters
Tel: +91 80 28411633
Lineage Power 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.
© 2008 Lineage Power Corporation, (Mesquite, Texas) All International Rights Reserved.
Document No: DS03-089 ver. 1.3
PDF name: jhc_jhw350_series.ds.pdf
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