TPS2393 Datasheet, PDF (1/31 Pages) Texas Instruments – FULL-FEATURED -48-V HOT SWAP POWER MANAGER

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TPS2392
TPS2393
SLUS536C − AUGUST 2002 − REVISED AUGUST 2004
FULLĆFEATURED -48ĆV
HOT SWAP POWER MANAGER
FEATURES
D Wide Input Supply Range: −20 V to −80 V
D Transient Rating to −100 V
D Programmable Current Limit
D Programmable Current Slew Rate
D Programmable UV/OV Thresholds/Hysteresis
D Debounced Insertion Detection Inputs
D Open-Drain Power Good (PG) Output
D Fault Timer to Eliminate Nuisance Trips
D Open-Drain Fault Output (FAULT)
D Enable Input (EN)
D 14-Pin TSSOP package
D 44-Pin TSSOP Package for
Creapage/Clearance
APPLICATIONS
D −48-V Distributed Power Systems
D Central Office Switching
D Wireless Base Station
DESCRIPTION
The TPS2392 and TPS2393 integrated circuits are hot
swap power managers optimized for use in nominal
−48-V systems. They operate with supply voltage
ranges from −20-V 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. Each device provides load current
slew rate control and peak magnitude limiting.
Undervoltage and overvoltage shutdown thresholds
are easily programmed via a three-resistor divider
network. In addition, two active-low, debounced inputs
provide plug-in insertion detection. A power good (PG)
output enables downstream converters. The TPS2392
and TPS2393 also provide the basic hot swap functions
of electrical isolation of faulty cards, filtered protection
against nuisance overcurrent trips, and single-line fault
reporting. The 44-pin part supports designs where
telecomm creepage and clearance requirements must
be followed.
The TPS2392 latches off in response to current faults,
while the TPS2393 periodically retries the load in the
event of a fault.
GND
−48V
R1
200 kΩ
1%
R2
4.99 kΩ
1%
C3
1500 pF
R3
3.92 kΩ
1%
R5
100
kΩ
R6
10 kΩ
TPS2392/TPS2393
1 UVLO
OVLO 14 _D1
BAS19
2 INSA DRAINSNS 13
3 INSB
PG 12
D2
5.6 V
4 FAULT
5 EN
RTN 11
GATE 10
6 FLTTIME ISENS 9
C2
0.1 µF
7 IRAMP
C1
3900 pF
−VIN 8
C4
100 µF
100 V
DC/DC
CONVERTER
VIN+ VOUT+
VDD
EN
VOUT+
COUT
VIN− VOUT−
VOUT−
Q1
IRF530
R4
20 mΩ
1/4, 1%
VUV = 32.8 V
VUV = 30.8 V
VOV = 72.6 V
UDG−02098
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  2004, Texas Instruments Incorporated