JRCW450U [LINEAGEPOWER]
36â75 Vdc Input; 48Vdc Output; 450W Output;
| 型号： | JRCW450U |
| 厂家： | 
LINEAGE POWER CORPORATION |
| 描述： | 36â75 Vdc Input; 48Vdc Output; 450W Output |
| 文件： | 总14页 (文件大小：1038K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Data Sheet
GE
JRW450U Orca* Series; DC-DC Converter Power Modules
36–75 Vdc Input; 48Vdc Output; 450W Output
Features
RoHS Compliant
.
.
.
.
.
.
.
Compliant to RoHS II EU Directive 2011/65/EC (-Z versions)
Compliant to REACH Directive (EC) No 1907/2006
High power density: 166 W/in3
Very high efficiency: >94% Typ at Full Load
Industry standard half-brick pin-out
Low output ripple and noise
Industry standard half-brick footprint
57.7mm x 60.7mm x 12.7mm
(2.27” x 2.39” x 0.5”)
.
.
.
.
.
.
.
.
.
.
.
Remote Sense
2:1 input voltage range
Single tightly regulated output
Applications
Constant switching frequency
.
.
.
RF Power Amplifier
Constant Current Overcurrent limit
Latch after short circuit fault shutdown
Over temperature protection auto restart
Output voltage adjustment trim, 28.8Vdc to 57.6Vdc
Wide operating case temperature range (-40°C to 100°C)
CE mark meets 2006/95/EC directives§
Wireless Networks
Switching Networks
Options
.
.
.
Output OCP/OVP auto restart
Shorter pins
ANSI/UL# 60950-1, 2nd Ed. Recognized, CSA† C22.2 No.
60950-1-07 Certified, and VDE‡ 0805-1 (EN60950-1, 2nd Ed.)
Licensed
Unthreaded heat sink holes
.
ISO** 9001 and ISO 14001 certified manufacturing facilities
Description
The JRCW450U Orca series of dc-dc converters are a new generation of isolated, very high efficiency DC/DC power modules
providing up to 450W output power in an industry standard half-brick size footprint, which makes it an ideal choice for high
voltage and high power applications. Threaded-through holes are provided to allow easy mounting or addition of a heat sink for
high-temperature applications. The output is fully isolated from the input, allowing versatile polarity configurations and grounding
connections.
* Trademark of the General Electric Company
#
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
June 7, 2013
©2012 General Electric Company. All rights reserved.
Page 1
Data Sheet
GE
JRCW450U Orca Series; DC-DC Converter Power Modules
36–75 Vdc Input; 48.0Vdc Output; 450W Output
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
Continuous
All
All
VIN
-0.3
-0.3
80
Vdc
Vdc
Transient, operational (≤100 ms)
VIN,trans
100
Operating Case Temperature
(See Thermal Considerations section, Figure 19)
All
Tc
-40
100
°C
Storage Temperature
All
All
All
Tstg
-55
125
1500
500
°C
Vdc
Vdc
I/O Isolation Voltage: Input to Case, Input to Output
Output to Case
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.
Parameter
Device
Symbol
Min
Typ
Max
Unit
Operating Input Voltage
(see Figure 12 for VIN MIN when using trim-up feature)
All
VIN
36
48
75
Vdc
Maximum Input Current
(VIN=36V to 75V, IO=IO, max
)
All
All
IIN,max
I2t
14.0
2
Adc
Inrush Transient
A2s
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 12μH source impedance; VIN=0V to 75V, IO= IOmax
see Figure 7)
;
All
All
20
mAp-p
dB
Input Ripple Rejection (120Hz)
40
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 being an integrated
part of complex power architecture. To preserve maximum flexibility, internal fusing is not included. Always use an input line fuse,
to achieve maximum safety and system protection. The safety agencies require a time-delay or fast-acting fuse with a maximum
rating of 25 A in the ungrounded input connection (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.
June 7, 2013
©2012 General Electric Company. All rights reserved.
Page 2
Data Sheet
GE
JRCW450U Orca Series; DC-DC Converter Power Modules
36–75 Vdc Input; 48.0Vdc Output; 450W Output
Electrical Specifications (continued)
Parameter
Device
Symbol
Min
Typ
Max
Unit
Output Voltage Set-point
(VIN=VIN,nom, IO=IO, max, Tc =25°C)
All
VO, set
47.0
48
49.0
Vdc
Output Voltage Set-Point Total Tolerance
(Over all operating input voltage, resistive load, and temperature
conditions until end of life)
All
VO
47.0
49.0
Vdc
Output Regulation
Line (VIN=VIN, min to VIN, max
Load (IO=IO, min to IO, max
Temperature (Tc = -40ºC to +100ºC)
)
All
All
All
0.1
0.1
0.25
0.2
0.2
0.5
%Vo,set
%Vo,set
%Vo,set
)
Output Ripple and Noise on nominal output
(VIN=VIN, nom and IO=IO, min to IO, max
)
RMS (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
All
All
100
300
125
400
mVrms
mVpk-pk
External Capacitance (ESR > 10 mΩ)1
Output Power (Vo=48V to 57.6V)
Output Current
All
All
All
CO
PO,max
Io
440
0
6500
450
9.4
μF
W
Adc
Output Current Limit Inception (Constant current until Vo<VtrimMIN
duration <4s)
,
All
All
IO, lim
IO, sc
11.0
12.2
15
Adc
Output Short Circuit Current (VO≤ 0.25Vdc
)
Arms
Efficiency
VIN=VIN, nom, Tc=25°C IO=IO, max , VO= VO,set
All
η
93.5
94.0
180
%
Switching Frequency
fsw
kHz
Dynamic Load Response
(Io/t=1A/10s; Vin=Vin,nom; Tc=25°C; Tested with a 470 μF
aluminum and a 10 µF ceramic capacitor across the load.)
Load Change from Io= 50% to 75% of Io,max:
Peak Deviation
All
Vpk
ts
2
1.5
%VO, set
ms
Settling Time (Vo<10% peak deviation)
Load Change from Io= 25% to 50% of Io,max:
Peak Deviation
Vpk
ts
2
1.5
%VO, set
ms
Settling Time (Vo<10% peak deviation)
1 Note: use a minimum 2 x 220uF output capacitor. Recommended capacitor is Nichicon CD series, 220uF/35V. If the ambient temperature is less
than -20OC, use more than 3 of recommended minimum capacitors. When starting into maximum external capacitor, do not simultaneously apply
a Constant Current electronic load set to greater than 0.5 x IoMAX; or delay application of full CC load until Vo >1.0V.
Isolation Specifications
Parameter
Symbol
Ciso
Min
Typ
15
Max
Unit
nF
Isolation Capacitance
Isolation Resistance
Riso
10
Mꢀ
General Specifications
Parameter
Device
Symbol
Min
Typ
136.3
Max
Unit
109/Hours
Hours
g
Calculated Reliability based upon Telcordia SR-332 Issue 3:
Method I Case 3 (IO=80%IO, max, TA=40°C, airflow = 200 lfm, 90%
confidence)
FIT
All
MTBF
7,338,052
76.4
Weight
All
2.69
oz.
June 7, 2013
©2012 General Electric Company. All rights reserved.
Page 3
Data Sheet
GE
JRCW450U Orca Series; DC-DC Converter Power Modules
36–75 Vdc Input; 48.0Vdc Output; 450W Output
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
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 - Remote On/Off Current
Logic Low - On/Off Voltage
Logic High Voltage – (Typ = Open Collector)
Logic High maximum allowable leakage current
All
All
All
All
Ion/off
Von/off
Von/off
Ion/off
0
1.0
0.8
5
mA
Vdc
Vdc
μA
50
Turn-On Delay and Rise Times
(Vin=Vin,nom, IO=IO, max, 25C)
Case 1: Tdelay = Time until VO = 10% of VO,set from application of Vin
with Remote On/Off set to ON
All
All
All
Tdelay
Tdelay
Trise
120
20
ms
ms
Case 2: Tdelay = Time until VO = 10% of VO,set from application of
Remote On/Off from Off to On with Vin already applied for at
least one second.
Trise = time for VO to rise from 10% of VO,set to 90% of VO,set
.
60
Synchronous Rectifier Activation Level and Delay*
Minimum IOUT to activate synch rectifier mode
IOUT,SYNC
TSYNC
2.4
1
A
Minimum time to activate synch rectifier mode (IOUT> IOUT,SYNC
)
ms
Output Voltage Overshoot
(IO=80% of IO, max, TA=25°C)
Output Voltage Adjustment
3
2
% VO, set
(See Feature Descriptions):
Output Voltage Remote-sense Range
(only for No Trim or Trim down application )
Output Voltage Set-point Adjustment Range (trim)
__
__
All
Vsense
%Vo,nom
All
All
All
Vtrim
VO, limit
Tref
28.8
60
---
57.6
65
Vdc
Vdc
°C
Output Overvoltage Protection (TA=25C)
Over Temperature Protection
115
(See Feature Descriptions, Figure 19)
Input Under Voltage Lockout
VIN, UVLO
Turn-on Threshold
Turn-off Threshold
Hysteresis
All
All
All
35
32
3
36
Vdc
Vdc
Vdc
31
2.5
Input Over voltage Lockout
VIN, OVLO
Turn-on Threshold
Turn-off Threshold
Hysteresis
All
All
All
79.5
83
3
81
---
Vdc
Vdc
Vdc
80
2.5
* Note: Module has internal circuit that inhibits output synchronous rectifier mode, during module startup, until IOUT> IOUT,SYNC for
time> TSYNC. Once output synchronous mode is activated, module remains in synchronous rectifier mode, even if load is reduced to
0A, until module output is turned off using on/off pin or loss of input voltage.
June 7, 2013
©2012 General Electric Company. All rights reserved.
Page 4
Data Sheet
GE
JRCW450U Orca Series; DC-DC Converter Power Modules
36–75 Vdc Input; 48.0Vdc Output; 450W Output
Characteristic Curves
The following figures provide typical characteristics for the JRCW450U (48V, 9.4A) at 25ºC. The figures are identical for either
positive or negative Remote On/Off logic.
OUTPUT CURRENT, Io (A)
TIME, t (50ms/div)
Figure 1. Converter Efficiency versus Output Current.
Figure 4. Typical Start-Up Using negative Remote On/Off;
Co,ext = 440µF.
TIME, t (50ms/div)
TIME, t (1s/div)
Figure 2. Typical Output Ripple and Noise at Room
Temperature and 48Vin; Io = Io,max; Co,ext = 440µF.
Figure 5. Typical Start-Up from VIN, on/off enabled prior to
VIN step; Co,ext = 470µF.
TIME, t (1ms/div)
TIME, t (1ms/div)
Figure 3. Dynamic Load Change Transient Response from
25% to 50% to 25% of Full Load at Room Temperature and
48 Vin; 0.1A/uS, Co,ext = 440µF.
Figure 6. Dynamic Load Change Transient Response from 50
% to 75% to 50% of Full Load at Room Temperature and 48
Vin; 0.1A/uS, Co,ext = 440µF.
June 7, 2013
©2012 General Electric Company. All rights reserved.
Page 5
Data Sheet
GE
JRCW450U Orca Series; DC-DC Converter Power Modules
36–75 Vdc Input; 48.0Vdc Output; 450W Output
configuration in Figure 7, a 470μF Low ESR aluminum
capacitor, CIN , mounted close to the power module helps
ensure the stability of the unit.
Test Configurations
Consult the factory for further application guidelines.
Output Capacitance
The JRCW450U power module requires a minimum output
capacitance of 440µF Low ESR aluminum capacitor, Cout to
ensure stable operation over the full range of load and line
conditions, see Figure 8. If the ambient temperature is under -
20C, it is required to use at least 3 pcs of minimum capacitors
in parallel. In general, the process of determining the
acceptable values of output capacitance and ESR is complex
and is load-dependent.
Note: Measure the input reflected-ripple current with a simulated
source inductance (LTEST) of 12 µH. Capacitor CS offsets possible
battery impedance. Measure the current, as shown above.
Figure 7. Input Reflected Ripple Current Test Setup.
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 60950-1, 2nd Ed.,
CSA No. 60950-1 2nd Ed., and VDE0805-1 EN60950-1, 2nd Ed.
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.
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:
Note: Use a Cout (470 µF Low ESR aluminum or tantalum capacitor
typical), a 0.1 µF ceramic capacitor and a 10 µF ceramic capacitor,
and 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.
.
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.
Figure 8. Output Ripple and Noise Test Setup.
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.
However, SELV will not be maintained if VI(+) and VO(+) are
grounded simultaneously.
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:
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.
.
The input source is to be provided with reinforced
insulation from any hazardous voltage, including the ac
mains.
.
.
One Vi pin and one Vo pin are to be reliably earthed, or
both the input and output pins are to be kept floating.
Figure 9. Output Voltage and Efficiency Test Setup.
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.
Design Considerations
Input Source Impedance
The power module should be connected to a low
ac-impedance source. A highly inductive source impedance
can affect the stability of the power module. For the test
June 7, 2013
©2012 General Electric Company. All rights reserved.
Page 6
Data Sheet
GE
JRCW450U Orca Series; DC-DC Converter Power Modules
36–75 Vdc Input; 48.0Vdc Output; 450W Output
Overcurrent Protection
Safety Considerations (continued)
To provide protection in a fault output overload condition, the
module is equipped with internal current limiting protection
circuitry, and can endure continuous overcurrent by providing
constant current output, for up to 4 seconds, as long as the
output voltage is greater than VtrimMIN. If the load resistance is
too low to support VtrimMIN in an overcurrent condition or a
short circuit load condition exists, the module will shut down
immediately.
All flammable materials used in the manufacturing of these
modules are rated 94V-0, or tested to the UL60950 A.2 for
reduced thickness.
The input to these units is to be provided with a maximum 25
A fast-acting or time-delay fuse in the ungrounded input
connection.
To insure safety compliance, the temperature at Tref (Figure
16) at full load should not exceed the listed temperature when
operating at the indicated input voltage.
A latching shutdown option is standard. Following shutdown,
the module will remain off until the module is reset by either
cycling the input power or by toggling the on/off pin for one
second.
An auto-restart option (4) is also available in a case where an
auto recovery is required. If overcurrent greater than 12A
persists for few milli-seconds, the module will shut down and
auto restart until the fault condition is corrected. 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.
75Vdc input
Tref1 or
36Vdc input
Test
Condition
Tref1 or
Tref3
Tref3
Tref2
Tref2
130°C 89.6°C
130°C 90.2°C
130°C 95.0°C
No heat sink
83.4°C
130°C
130°C
130°C
1 in. heat sink 73.8°C
Cold wall 75.5°C
Feature Description
Over Voltage 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 shut down and latch off. The
overvoltage 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.
Remote On/Off
Two remote on/off options are available. Positive logic 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,
device code suffix “1”, turns the module off during a logic high
and on during a logic low.
To turn the power module on and off, the user must supply a
switch (open collector or equivalent) to control the voltage
(Von/off) between the ON/OFF terminal and the VIN(-) terminal
(see Figure 10). Logic low is 0V ≤ Von/off ≤ 0.8V. The maximum
Ion/off during a logic low is 1mA, the switch should be maintain
a logic low level whilst sinking this current.
An auto-restart option (4) is also available in a case where an
auto recovery is required.
Remote sense
Remote sense minimizes the effects of distribution losses by
regulating the voltage at the remote-sense connections (see
Figure 11). For No Trim or Trim down application, 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.:
During a logic high, the typical maximum Von/off generated by
the module is 5V, and the maximum allowable leakage
current at Von/off = 5V is 50μA.
If not using the remote on/off feature:
For positive logic, leave the ON/OFF pin open.
For negative logic, short the ON/OFF pin to VIN(-).
[Vo(+)–Vo(-)] – [SENSE(+) – SENSE(-)] 2% 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 11. 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
Figure 10. Circuit configuration for using Remote On/Off
Implementation.
June 7, 2013
©2012 General Electric Company. All rights reserved.
Page 7
Data Sheet
GE
JRCW450U Orca Series; DC-DC Converter Power Modules
36–75 Vdc Input; 48.0Vdc Output; 450W Output
For output voltages: VO,nom = 48V
Feature Description (continued)
100
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.
Radj _ down
2 k
%
Where,
V
o, nom Vdesired
%
100
V
o, nom
Vdesired = Desired output voltage set point (V).
Figure 11. Effective Circuit Configuration for Single-Module
Remote-Sense Operation Output Voltage.
Output Voltage Programming
Trimming allows the user to increase or decrease the output
voltage set point of a module. Trimming down is
accomplished by connecting an external resistor between the
TRIM pin and the SENSE(-) pin. Trimming up is accomplished
by connecting external resistor between the SENSE(+) pin and
TRIM pin. The trim resistor should be positioned close to the
module. Certain restrictions apply to the input voltage lower
limit when trimming the output voltage to the maximum. See
Figure 12 for the allowed input to output range when using
trim. If not using the trim down feature, leave the TRIM pin
open.
Figure 13. Circuit Configuration to Decrease Output
Voltage.
Trim Up – Increase Output Voltage
With an external resistor (Radj_up) connected between the
SENSE(+) and TRIM pins, the output voltage set point (Vo,adj
increases (see Figure 14).
)
The following equation determines the required external-
resistor value to obtain a percentage output voltage change
of %.
For output voltages: VO,nom = 48V
V
(100 %)
(100 (2 %))
%
O ,nom
R
adj
_
up
k
1.225 %
Where,
V
desired Vo, nom
%
100
Vo, nom
Vdesired = Desired output voltage set point (V).
Figure 12. Output Voltage Trim Limits vs. Input Voltage.
Trim Down – Decrease Output Voltage
With an external resistor (Radj_down) between the TRIM and
SENSE(-) pins, the output voltage set point (Vo,adj) decreases
(see Figure 13). The following equation determines the
required external-resistor value to obtain a percentage output
voltage change of %.
Figure 14. Circuit Configuration to Increase Output Voltage.
June 7, 2013
©2012 General Electric Company. All rights reserved.
Page 8
Data Sheet
GE
JRCW450U Orca Series; DC-DC Converter Power Modules
36–75 Vdc Input; 48.0Vdc Output; 450W Output
Feature Description (continued)
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 11.
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.
Figure 15. Circuit Configuration to Actively Adjust the
Output Voltage.
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 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.
Over Temperature Protection
The JRCW450U module provides a non-latching over
temperature protection. A temperature sensor monitors the
operating temperature of the converter. If the reference
temperature, TREF 1, (see Figure 16) exceeds a threshold of 115
ºC (typical), the converter will shut down and disable the
output. When the base plate temperature has decreased by
approximately 1-2 ºC the converter will automatically restart.
Examples:
To trim down the output of a nominal 48V module, without –T
option, to 40V
Thermal Considerations
The power modules operate in a variety of thermal
48V 40V
%
100
48V
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 (TREF
occurs at the position indicated in Figure 16.
∆% = 16.7%
100
R
adj _ down
2 K
16.7
)
Radj _ down = 3.99
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.
To trim up the output of a nominal 48V module, without –T
option, to 52.8V
52.8V 48V
%
100
48V
The thermal data presented here is based on physical
measurements taken in a wind tunnel, using automated
thermo-couple instrumentation to monitor key component
temperatures: FETs, diodes, control ICs, magnetic cores,
ceramic capacitors, opto-isolators, and module pwb
conductors, while controlling the ambient airflow rate and
temperature. For a given airflow and ambient temperature,
the module output power is increased, until one (or more) of
the components reaches its maximum derated operating
temperature, as defined in IPC-9592. This procedure is then
repeated for a different airflow or ambient temperature until a
family of module output derating curves is obtained.
ꢁ% = 10
48(100 10) (100 (210))
Radj _ up
1.22510
10
Radj _ up = 429.8kꢀ
Active Voltage Programming
For the JRCW450Ux a Digital-Analog converter (DAC), capable
of both sourcing and sinking current can be used to actively
set the output voltage, as shown in Figure 15. The value of RG
will be dependent on the voltage step and range of the DAC
and the desired values for trim-up and trim-down ꢁ%. Please
contact your GE technical representative to obtain more
details on the selection for this resistor.
June 7, 2013
©2012 General Electric Company. All rights reserved.
Page 9
Data Sheet
GE
JRCW450U Orca Series; DC-DC Converter Power Modules
36–75 Vdc Input; 48.0Vdc Output; 450W Output
Thermal Considerations (continued)
Ambient Temperature, TA (oC)
Figure 17. Derating Output Current vs. local Ambient
temperature and Airflow, No Heat sink, Vin=48V, airflow
from Vi(-) to Vi(+).
For reliable operation with Vin=48V this temperature should
no texceed 100ºC at either TREF 1 or TREF 2, or 130 ºC at TREF3 for
applications using forced convection airflow without heat
sink, or in cold plate applications. The temperatures at either
T
REF 1 or TREF 2 should not exceed 90ºC, when using a 1in. heat
sink in forced convection airflow. 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 TREF temperature of the power modules is
discussed above, you can limit this temperature to a lower
value for extremely high reliability.
Ambient Temperature, TA (oC)
Figure 18. Derating Output Current vs. local Ambient
temperature and Airflow, 0.5” Heat sink, Vin=48V, airflow
from Vi(-) to Vi(+).
Figure 16. Case (TREF ) Temperature Measurement Location
(top view).
Thermal Derating
Thermal derating is presented for different applications in
Figure 17, 18 and 19. The JRCW450U module is mounted in a
traditional open chassis or cards with forced air flow. The
module is cooled by heat removal into a forced airflow that
passes through the interior of the module and over the top
base plate and/or attached heat sink. Conduction cooled
thermal derating is presented in Figure 20.
Ambient Temperature, TA (oC)
Figure 19. Derating Output Current vs. local Ambient
temperature and Airflow, 1.0” Heat sink, Vin=48V, airflow
from Vi(-) to Vi(+).
June 7, 2013
©2012 General Electric Company. All rights reserved.
Page 10
Data Sheet
GE
JRCW450U Orca Series; DC-DC Converter Power Modules
36–75 Vdc Input; 48.0Vdc Output; 450W Output
Thermal Considerations (continued)
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 GE Board
Mounted Power Modules: Soldering and Cleaning Application
Note.
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 a RoHS-compliant
finish that is compatible with both Pb and Pb-free wave
soldering processes. A maximum preheat rate of 3C/s is
suggested. The wave preheat process should be such that
the temperature of the power module board is kept below
210C. For Pb solder, the recommended pot temperature is
260C, while the Pb-free solder pot is 270C max. The
JRCW450U cannot be processed with paste-through-hole Pb
or Pb-free reflow process. If additional information is needed,
please consult with your GE representative for more details.
Cold Plate (inside surface) Temperature, TC (oC)
Figure 20. Derating Output Power in conduction cooling
(cold plate) applications, Vin=48V.
Layout Considerations
The JRCW450U power module series are constructed using a
single PWB with integral base plate; 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.
June 7, 2013
©2012 General Electric Company. All rights reserved.
Page 11
Data Sheet
GE
JRCW450U Orca Series; DC-DC Converter Power Modules
36–75 Vdc Input; 48.0Vdc Output; 450W Output
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.]
*Top side label includes GE name, product designation, and data code.
TOP VIEW*
SIDE VIEW**
BOTTOM VIEW
Pin Description
1
2
3
4
5
6
7
8
9
Vin (+)
On/Off
Baseplate
Vin (–)
Vout (–)
Sense (-)
Trim
Sense (+)
Vout (+)
June 7, 2013
©2012 General Electric Company. All rights reserved.
Page 12
Data Sheet
GE
JRCW450U Orca Series; DC-DC Converter Power Modules
36–75 Vdc Input; 48.0Vdc Output; 450W Output
Recommended Pad Layout 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. ]
June 7, 2013
©2012 General Electric Company. All rights reserved.
Page 13
Data Sheet
GE
JRCW450U Orca Series; DC-DC Converter Power Modules
36–75 Vdc Input; 48.0Vdc Output; 450W Output
Ordering Information
Please contact your GE Sales Representative for pricing, availability and optional features.
Table 1. Device Code
Output
Voltage
Output
Current
Connector
Type
Input Voltage
Efficiency
Product codes
Comcodes
48V (36-75Vdc)
48V (36-75Vdc)
48V (36-75Vdc)
48V (36-75Vdc)
48V (36-75Vdc)
48V
48V
48V
48V
48V
9.4A
9.4A
9.4A
9.4A
9.4A
94%
94%
94%
94%
94%
Through hole
Through hole
Through hole
Through hole
Through hole
JRCW450U641Z
CC109168992
150022105
JRCW450U64-18Z
JRCW450U641-18Z
JRCW450U641-TZ
JRCW450U64-18TZ
150021936
CC109168984
CC109172838
Table 2. Device Options
Contact Us
For more information, call us at
USA/Canada:
+1 888 546 3243, or +1 972 244 9288
Asia-Pacific:
+86.021.54279977*808
Europe, Middle-East and Africa:
+49.89.878067-280
India:
+91.80.28411633
www.ge.com/powerelectronics
June 7, 2013
©2012 General Electric Company. All rights reserved.
Version 1.22
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