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PDF E48SR1R525 Data sheet ( Hoja de datos )
| Número de pieza | E48SR1R525 | |
| Descripción | Eighth Brick Bus Converter DC/DC Power Modules | |
| Fabricantes | Delta Electronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de E48SR1R525 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
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Delphi Series E48SR, 66W Eighth Brick Family
DC/DC Power Modules: 48V in, 1.5V/25A outwww.DataSheet4U.com
The Delphi Series E48SR Eighth Brick, 48V input, single output,
isolated DC/DC converters are the latest offering from a world leader in
power systems technology and manufacturing — Delta Electronics, Inc.
This product family is available in a surface mount or through-hole
package and provides up to 66 watts of power or 25A of output current
(1.8V and below) in an industry standard footprint. With creative design
technology and optimization of component placement, these converters
possess outstanding electrical and thermal performances, as well as
extremely high reliability under highly stressful operating conditions. All
models are fully protected from abnormal input/output voltage, current,
and temperature conditions. The Delphi Series converters meet all
safety requirements with basic insulation.
FEATURES
High Efficiency: 89.5% @ 1.5V/25A
Size: 58.4mm x 22.8mm x 8.35mm
(2.30”x0.90”x0.33”)
Industry standard pin out
SMT and through-hole versions
Fixed frequency operation: 350KHz
Input UVLO, Output OCP, OVP, OTP
1500V isolation
Basic insulation
No minimum load required
2:1 Input voltage range
ISO 9001, TL 9000, ISO 14001, QS 9000,
OHSAS 18001 certified manufacturing
facility
UL/cUL 60950 (US & Canada)
recognized, TUV (EN60950) certified
CE mark meets 73/23/EEC and
93/68/EEC directives
OPTIONS
SMT or through-hole versions
Positive On/Off logic
Short pin lengths available
APPLICATIONS
Telecom/Datacom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial/Test Equipment
DATASHEET
DS_E48SR1R525_02272007
1 page  
ELECTRICAL CHARACTERISTICS CURVES
00
00
Figure 8: Output voltage response to step-change in load
current (75%-50%-75% of Io, max; di/dt = 0.1A/µs). Load cap:
10µF tantalum capacitor and 1µF ceramic capacitor. Top Trace:
Vout (50mV/div, 200us/div), Bottom Trace: Iout (5A/div). Scope
measurement should be made using a BNC cable (length
shorter than 20 inches). Position the load between 51 mm to 76
mm (2 inches to 3 inches) from the module
Figure 9: Output voltage response to step-change in load
current (75%-50%-75% of Io, max; di/dt = 2.5A/µs). Load cap:
470µF, 35mΩ ESR solid electrolytic capacitor and 1µF ceramic
capacitor. Top Trace: Vout (50mV/div, 200us/div), Bottom Trace:
Iout (5A/div). Scope measurement should be made using a
BNC cable (length shorter than 20 inches). Position the load
between 51 mm to 76 mm (2 inches to 3 inches) from the
module
Figure 10: Test set-up diagram showing measurement points
for Input Terminal Ripple Current and Input Reflected Ripple
Current.
Note: Measured input reflected-ripple current with a simulated
source Inductance (LTEST) of 12 µH. Capacitor Cs offset
possible battery impedance. Measure current as shown above
DATASHEET
DS_E48SR1R525_02272007
5
5 Page 
THERMAL CONSIDERATIONS
Thermal management is an important part of the system
design. To ensure proper, reliable operation, sufficient
cooling of the power module is needed over the entire
temperature range of the module. Convection cooling is
usually the dominant mode of heat transfer.
Hence, the choice of equipment to characterize the
thermal performance of the power module is a wind
tunnel.
Thermal Testing Setup
Delta’s DC/DC power modules are characterized in
heated vertical wind tunnels that simulate the thermal
environments encountered in most electronics
equipment. This type of equipment commonly uses
vertically mounted circuit cards in cabinet racks in which
the power modules are mounted.
The following figure shows the wind tunnel
characterization setup. The power module is mounted
on a test PWB and is vertically positioned within the
wind tunnel. The space between the neighboring PWB
and the top of the power module is constantly kept at
6.35mm (0.25’’).
FACING PWB
PWB
MODULE
AIR VELOCITY
AND AMBIENT
TEMPERATURE
MEASURED BELOW
THE MODULE
AIR FLOW
50.8 (2.0”)
12.7 (0.5”)
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)
Figure 28: Wind tunnel test setup
Thermal Derating
Heat can be removed by increasing airflow over the
module. The hottest point temperature of the module is
+107°C. To enhance system reliability, the power module
should always be operated below the maximum operating
temperature. If the temperature exceeds the maximum
module temperature, reliability of the unit may be affected.
THERMAL CURVES
Figure 21: Hot spot temperature measured point
＊The allowed maximum hot spot temperature is defined at 107℃
E48SR1R525(Standard) Output Current vs. Ambient Temperature and Air Velocity
Output Current(A)
@Vin = 48V (Transverse Orientation)
25
Natural
20 Convection
100LFM
15
200LFM
10
300LFM
5
0
55 60 65 70 75 A8m0bient Temperature (8℃5)
Figure 22: Output current vs. ambient temperature and air
velocity@Vin=48V(Transverse Orientation)
DATASHEET
DS_E48SR1R525_02272007
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet E48SR1R525.PDF ] | |
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