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TPS2390 Datasheet

  • TPS2390

  • 簡(jiǎn)單 48V 熱插拔控制器

  • 18頁

  • TI

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TPS2390
TPS2391
SLUS471C 鈥?JUNE 2002 鈥?REVISED OCTOBER 29, 2002
SIMPLE -48 V HOT SWAP CONTROLLER
FEATURES
D
Wide Input Supply Range: 鈥?6 V to 鈥?0 V
D
Transient Rating to 鈥?00 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
鈰?/div>
APPLICATIONS
DESCRIPTION
The TPS2390 and TPS2391 integrated circuits
are hot swap power managers optimized for use
in nominal 鈥?8-V systems. They are designed for
supply voltage ranges up to 鈥?0 V, and are rated
to withstand spikes to 鈥?00 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.
D
鈥?8-V Distributed Power Systems
D
Central Office Switching
D
Wireless Base Station
APPLICATION DIAGRAM
鈥?8V_RTN
R3
10 k鈩?/div>
1W
D2
TPS2390/1
R2
100 k鈩?/div>
1
FAULT
RTN
GATE
8
7
Q1
IRF530
VOUT+
+
C3
100
碌F
100 V
DC/DC
CONVERTER
MODULE
+
COUT
VOUT鈥?/div>
2 EN
3
C1
0.1
碌F
DGK PACKAGE
(TOP VIEW)
FAULT
1
2
3
4
8
7
6
5
RTN
GATE
ISENS
鈥揤IN
UDG鈥?2085
FLTTIME ISENSE 6
鈥揤IN
5
R1
0.02
鈩?/div>
1/4 W 1%
EN
FLTTIME
IRAMP
4 IRAMP
C2
3900 pF
鈥?8V_IN
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.
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
錚?/div>
2002, Texas Instruments Incorporated
www.ti.com
1

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