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TPS2490 Datasheet

  • TPS2490

  • 可鎖存正高電壓功率有限熱插拔控制器

  • 20頁

  • TI

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Actual Size
3,0 mm X 4,88 mm
TPS2490
TPS2491
SLVS503 鈥?NOVEMBER 2003
POSITIVE HIGH-VOLTAGE POWER-LIMITING HOTSWAP CONTROLLER
FEATURES
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Programmable Power Limiting and Current
Limiting for Complete 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 Down-
stream DC/DC Coordination
Enable can be used as a Programmable
Undervoltage Lockout or Logic Control
Small, Space-saving 10-pin MSOP Package
APPLICATIONS
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Server Backplanes
Storage Area Networks (SAN)
Medical Systems
Plug-in Modules
Base Stations
DGS Package
(Top View)
EN
VREF
PROG
TIMER
GND
1
2
3
4
5
10
9
8
7
6
VCC
SENSE
GATE
OUT
PG
DESCRIPTION
The TPS2490 and TPS2491 are easy-to-use, positive high voltage, 10-pin Hot Swap Power Manager鈩?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 MSOP package and significantly reduce
the number of external devices, saving precious board space. The TPS2490/91 is supported by application
notes, an evaluation module, and a design tool.
Typical Application and Corresponding SOA
V
I
= 48 Vdc
C1
0.1
碌F
R
S
0.01
鈩?/div>
M1
IRF540NS
V
O
at 4 A
D1
SMAJ60A
R1
324 k鈩?/div>
1
R5
10
鈩?/div>
10
VCC
EN
9
SENSE
8
GATE
7
OUT
R6
470 k鈩?/div>
6
TPS2490/91
PG
Power Good
R2
13.3 k鈩?/div>
2
VREF
R3
41.2 k鈩?/div>
PROG
3
TIMER
4
C
T
0.1
碌F
5
GND
C
O
220
碌F
I
LIM
= 5 A,
V
ON
/V
OFF
= 34.2 V/31.7 V,
P
LIM
= 34 W,
Timeout = 16 mS
Programmed
SOA, 16mS
R4
8.25 k鈩?/div>
Hot Swap Power Manager is a trademark of Texas Instruments.
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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright 漏 2002鈥?003, Texas Instruments Incorporated

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