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TPS2491DGS-TPS2491DGSG4-TPS2491DGSR-TPS2491DGSRG4
Retry Positive High-Voltage Power-Limiting Hot Swap Controller
OUT
VCC
GATE
VREF
SENSE
TIMER
TPS2490/91
VOUT
COUT
470 N
VIN
GND
RSNS
CTIMER
CIN Z1 D1
1 N
Cdv/dt
Only required when
using dv/dt start-up PROG
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TPS2490, TPS2491SLVS503E –NOVEMBER 2003–REVISED FEBRUARY 2017
TPS249x Positive High-Voltage Power-Limiting Hot Swap Controller Features Programmable Power Limiting and Current
Limiting for Complete Safe Operating Area (SOA)
Protection Wide Operating Range:9Vto80V Latched Operation (TPS2490) and Automatic
Retry (TPS2491) High-Side Drivefor Low-RDS(on) ExternalN-
channel MOSFET Programmable Fault Timerto Protect the
MOSFET and Eliminate Nuisance Shutdowns Power Good Open-Drain Output for Downstream
DC/DC Coordination Enable Can Be Usedasa Programmable
Undervoltage Lockoutor Logic Control Small, Space-Saving 10-pin VSSOP Package Calculator Tool Available (TPS2490/91 Design-in
Calculator, SLVC033)
Applications Server Backplanes Storage Area Networks (SAN) Medical Systems Plug-In Modules Base Stations
DescriptionThe TPS249x are easy-to-use, positive high voltage,
10-pin Hot Swap Power Manager devices that safely
drive an external N-channel MOSFET switch. The
power limit and current limit (both are adjustable and
independentof each other) ensure that the external
MOSFET operates insidea selected safe operating
area (SOA) under the harshest operating conditions.
Applications include inrush current limiting, electronic
circuit breaker protection, controlled load turn-on,
interfacingto down-stream DC-to-DC converters, and
power feed protection. These devices are availablein small, space-saving 10-pin VSSOP package and
significantly reduce the numberof external devices,
saving precious board space. The TPS249x is
supported by application notes, an evaluation
module, anda design tool.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Typical Application
