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TPS2391DGK Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza TPS2391DGK
Descripción Electrónicos  SIMPLE -48-V HOT SWAP CONTROLLER
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

TPS2391DGK Datasheet(HTML) 1 Page - Texas Instruments

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TPS2390
TPS2391
SLUS471D − JUNE 2002 − REVISED JANUARY 2008
SIMPLE -48V HOT SWAP CONTROLLER
1
www.ti.com
FEATURES
D Wide Input Supply Range: −36 V to −80 V
D Transient Rating to −100 V
D Programmable Current Limit
D Programmable Current Slew Rate
D Enable Input (EN)
D Fault Timer to Eliminate Nuisance Trips
D Open-Drain Fault Output (FAULT)
D Requires Few External Components
D 8-Pin MSOP Package
APPLICATIONS
D −48-V Distributed Power Systems
D Central Office Switching
D Wireless Base Station
DESCRIPTION
The TPS2390 and TPS2391 integrated circuits
are hot swap power managers optimized for use
in nominal −48-V systems. They are designed for
supply voltage ranges up to −80 V, and are rated
to withstand spikes to −100 V. In conjunction with
an external N-channel FET and sense resistor,
they can be used to enable live insertion of plug-in
cards and modules in powered systems. Both
devices provide load current slew rate and peak
magnitude limiting, easily programmed by sense
resistor value and a single-external capacitor.
They also provide single-line fault reporting,
electrical isolation of faulty cards, and protection
against nuisance overcurrent trips. The TPS2390
latches off in response to current faults, while the
TPS2391 periodically retries the load in the event
of a fault.
APPLICATION DIAGRAM
UDG−02085
DGK PACKAGE
(TOP VIEW)
FAULT
18
2
3
4
7
6
5
EN
FLTTIME
IRAMP
RTN
GATE
ISENS
−VIN
6
5
8
7
1
2
3
FAULT
EN
FLTTIME
GATE
ISENSE
−VIN
4
IRAMP
RTN
TPS2390/1
D2
C2
3900 pF
−48V_IN
−48V_RTN
DC/DC
CONVERTER
MODULE
+
+
Q1
IRF530
C3
100
µF
100 V
COUT
VOUT+
VOUT−
R1
0.02
1/4 W 1%
C1
0.1
µF
R3
10 k
1 W
R2
100 k
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
 2002 − 2008, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.


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