TPS2391DGKR Datasheet, PDF (1/21 Pages) Texas Instruments – SIMPLE -48-V HOT SWAP CONTROLLER

TPS2390
TPS2391
SLUS471D − JUNE 2002 − REVISED JANUARY 2008
SIMPLE -48ĆV HOT SWAP CONTROLLER
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
−48V_RTN
R3
10 kΩ
1W
D2
R2
100 kΩ
TPS2390/1
1 FAULT
RTN 8
2 EN
GATE 7
−48V_IN
C1
0.1 µF
3 FLTTIME ISENSE 6
4 IRAMP
−VIN 5
C2
3900 pF
VOUT+
+
DC/DC
+
C3 CONVERTER
COUT
100 µF
MODULE
100 V
VOUT−
Q1
IRF530
R1
0.02 Ω
1/4 W 1%
FAULT
EN
FLTTIME
IRAMP
DGK PACKAGE
(TOP VIEW)
1
8
2
7
3
6
4
5
RTN
GATE
ISENS
−VIN
UDG−02085
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semiconductor products and disclaimers thereto appears at the end of this data sheet.
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.
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