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TPS2350D Datasheet(PDF) 1 Page - Texas Instruments

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Part # TPS2350D
Description  HOT SWAP POWER MANAGER FOR REDUNDANT-48-V SUPPLIES
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS2350D Datasheet(HTML) 1 Page - Texas Instruments

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TPS2350
SLUS574A − JULY 2003 − REVISED SEPTEMBER 2003
HOT SWAP POWER MANAGER FOR REDUNDANT -48V SUPPLIES
1
www.ti.com
FEATURES
D Replaces OR-ing Diodes
D Operating Supply Range of −12 V to −80 V
D Withstands Transients to –100 V
D Programmable Current Limit
D Programmable Linear Inrush Slew Rate
D Programmable UV/OV Thresholds
D Programmable UV and OV Hysteresis
D Fault Timer to Eliminate Nuisance Trips
D Power Good and Fault Outputs
D 14-Pin SOIC and TSSOP Package
APPLICATIONS
D −48-V Distributed Power Systems
D Central Office Switching
D ONET
D Base Stations
DESCRIPTION
The TPS2350 is a hot swap power manager
optimized
for
replacing
OR-ing
diodes
in
redundant power −48-V systems. The TPS2350
operates with supply voltages from −12 V to
−80 V, and withstands spikes to −100 V.
The TPS2350 uses two power FETs as low
voltage drop diodes to efficiently select between
two redundant power supplies. This minimizes
system power dissipation and also minimizes
voltage drop through the power management
chain.
The TPS2350 also uses a third power FET to
provide load current slew rate control and peak
current limiting that is programmed by one resistor
and one capacitor. The device also provides a
power good output to enable down-stream power
converters and a fault output to indicate load
problems.
TYPICAL APPLICATION DIAGRAM
CLOAD
RLOAD
RSENSE
CRAMP
CFLT
UDG−03125
0.01
3
4
TPS2350
11
10
7
9
8
RTN
GAT
SENSE
SOURCE
GATA
GATB
−VINB
−VINA
RAMP
FLTTIM
OV
UV
−VINB
−VINA
Q1
1
5
6
14
13
12
PG
2
Power Good
Fault
FLT
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
 2003, Texas Instruments Incorporated


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