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PDF F48SA28025 Data sheet ( Hoja de datos )
| Número de pieza | F48SA28025 | |
| 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 F48SA28025 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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Delphi Series F48SA, 700W Full Brick Family
DC/DC Power Module: 48Vin, 28Vout www.DataSheet4U.com
The Delphi Series F48SA, 48V input, single output, full brick sized
isolated DC/DC converter is the latest offering from a world leader in
power systems technology and manufacturing ― Delta Electronics,
Inc. The Delphi F48SA series provides up to 700 watts of power or
up to 25A of output current. This product family operates from a wide
input range of 36V to 75V. With creative design technology and
optimization of component placement, these converters possess
outstanding electrical and thermal performance, as well as extremely
high reliability under highly stressful operating conditions. All models
are protected from abnormal input/output voltage and current
conditions, and feature 2250V input/output isolation and basic
insulation. An optional heatsink is available for extended operation.
FEATURES
High efficiency: 91.5% @ 28V/25A
Industry standard size and pinout:
61.0 x 116.8 x 12.7mm (2.40”x 4.60”x 0.50”)
Fixed frequency operation
Remote sense
Input UVLO, Output OCP, OVP & OTP
Auxiliary bias power
Basic insulation
2250V isolation
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing facility
UL/cUL 60950 (US & Canada) recognized, and
TUV (EN60950) certified
CE mark meets 73/23/EEC and 93/68/EEC
directive
OPTIONS
Negtive On/Off logic
Heatsink for extended operation
Output current monitoring
Delayed overcurrent shutdown
Parallel operation using forced
current sharing
APPLICATIONS
Telecom/DataCom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial/Test Equipment
DATASHEET
DS_F48SA28025_06062006
1 page  
ELECTRICAL CHARACTERISTICS CURVES
Figure 7: Output voltage response to step-change in load
current (75%-50% of Io, max; di/dt = 1A/µs). Load cap: 470µF
aluminum ,10uF Low ESR capacitor and 1µF ceramic
capacitor. Top Trace: Vout (200mV/div), Bottom Trace: Iout
(10A/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 8: Output voltage response to step-change in load
current (50%-75% of Io, max; di/dt = 1A/µs). Load cap: 470µF
aluminum,10uF Low ESR capacitor and 1µF ceramic capacitor.
Top Trace: Vout (200mV/div), Bottom Trace: Iout (10A/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: 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 15 µH. Capacitor Cs offset
possible battery impedance. Measure current as shown above.
DS_F48SA28025_06062005
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 19: Wind tunnel test setup
Thermal Derating
Heat can be removed by increasing airflow over the module.
The module’s maximum case temperature is 95℃. 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 20: Temperature measurement location viewed from the
IMS side
The allowed maximum hot spot temperature is defined at 95℃
F48SA28025(Standard) Output Power vs. Hot Spot Temperature
Output Power (W)
(Either Orientation)
750
700
650
600
550
500
450
400
350
25 35 45 55 65 75 85 95
Hot spot Temperature(℃)
Figure 21: Output power vs. hot spot temperature (Either
Orientation)
DS_F48SA28025_06062005
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet F48SA28025.PDF ] | |
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