TPS2490_17 Datasheet, PDF (1/36 Pages) Texas Instruments – Positive High-Voltage Power-Limiting Hot Swap Controller

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TPS2490, TPS2491
SLVS503E – NOVEMBER 2003 – REVISED FEBRUARY 2017
TPS249x Positive High-Voltage Power-Limiting Hot Swap Controller
1 Features
•1 Programmable Power Limiting and Current
Limiting for Complete Safe Operating Area (SOA)
Protection
• Wide Operating Range: 9 V to 80 V
• Latched Operation (TPS2490) and Automatic
Retry (TPS2491)
• High-Side Drive for Low-R_DS(on) External N-
channel MOSFET
• Programmable Fault Timer to Protect the
MOSFET and Eliminate Nuisance Shutdowns
• Power Good Open-Drain Output for Downstream
DC/DC Coordination
• Enable Can Be Used as a Programmable
Undervoltage Lockout or Logic Control
• Small, Space-Saving 10-pin VSSOP Package
• Calculator Tool Available (TPS2490/91 Design-in
Calculator, SLVC033)
2 Applications
• Server Backplanes
• Storage Area Networks (SAN)
• Medical Systems
• Plug-In Modules
• Base Stations
3 Description
The 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
independent of each other) ensure that the external
MOSFET operates inside a selected safe operating
area (SOA) under the harshest operating conditions.
Applications include inrush current limiting, electronic
circuit breaker protection, controlled load turn-on,
interfacing to down-stream DC-to-DC converters, and
power feed protection. These devices are available in
a small, space-saving 10-pin VSSOP package and
significantly reduce the number of external devices,
saving precious board space. The TPS249x is
supported by application notes, an evaluation
module, and a design tool.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS249x
VSSOP (10)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
VIN
CIN
Z1
Typical Application
RSNS
Q1
D1
R5
VOUT
COUT
R1
R2
R3
R4
SENSE
GATE OUT
VCC
EN
VREF
PROG
TPS2490/91
TIMER
PG
GND
CTIMER
470 NŸ
1 NŸ
Only required when
using dv/dt start-up
Cdv/dt
Copyright © 2017, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.