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TPS24711 Datasheet Preview

TPS24711 Datasheet

2.5-V to 18-V High-Efficiency Power-Limiting Hot-Swap Controller

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TPS24710, TPS24711
TPS24712, TPS24713
SLVSAL2G – JANUARY 2011 – REVISED NOVEMBER 2015
TPS2471x 2.5-V to 18-V High-Efficiency Power-Limiting Hot-Swap Controller
1 Features
1 2.5-V to 18-V Operation
• Accurate Current Limiting for Startup
• Programmable FET SOA Protection
• Accurate 25-mV Current-Sense Threshold
• Power-Good Output
• Fast Breaker for Short-Circuit Protection
• Programmable Fault Timer
• Programmable UV Threshold
• Drop-In Upgrade for LTC4211 – No Layout
Changes
• PG, FLT Active-High and Active-Low Versions
• MSOP-10 Package
2 Applications
• Server Backplanes
• Storage Area Networks (SAN)
• Medical Systems
• Plug-In Modules
• Base Stations
3 Description
The TPS24710/11/12/13 is an easy-to-use, 2.5 V to
18 V, hot-swap controller that safely drives an
external N-channel MOSFET. The programmable
current limit and fault time protect the supply and load
from excessive current at startup. After startup,
currents above the user-selected limit will be allowed
to flow until programmed timeout – except in extreme
overload events when the load is immediately
disconnected from source. The low, 25mV current
sense threshold is highly accurate and allows use of
smaller, more efficient sense resistors yielding lower
power loss and smaller footprint.
Programmable power limiting ensures the external
MOSFET operates inside its safe operating area
(SOA) at all times. This allows the use of smaller
MOSFETS while improving system reliability. Power
good and fault outputs are provided for status
monitoring and downstream load control.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS24710
TPS24711
TPS24712
SSOP (10)
3.00 mm × 3.00 mm
TPS24713
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application (12 V at 10 A)
RSENSE
M1
VIN
2 mΩ
CSD16403Q5
C1
0.1 μF
RGATE
10 Ω
3V
VOUT
COUT
470 μF
R1
130 kΩ
R2
18.7 kΩ
VCC
EN
TIMER
SENSE
GATE OUT
PGb (PG)
TPS2471x
PROG
FLTb (FLT)
GND
R4
3.01 kΩ
R5
3.01 kΩ
CT
56 nF
RPROG
44.2 kΩ
VUVLO = 10.8 V
ILMT = 12 A
tFAULT = 7.56 ms
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.




etcTI

TPS24711 Datasheet Preview

TPS24711 Datasheet

2.5-V to 18-V High-Efficiency Power-Limiting Hot-Swap Controller

No Preview Available !

TPS24710, TPS24711
TPS24712, TPS24713
SLVSAL2G – JANUARY 2011 – REVISED NOVEMBER 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 4
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ...................................... 5
7.2 ESD Ratings ............................................................ 5
7.3 Recommended Operating Conditions....................... 5
7.4 Thermal Information ................................................. 5
7.5 Electrical Characteristics........................................... 6
7.6 Timing Requirements ................................................ 7
7.7 Typical Characteristics .............................................. 9
8 Detailed Description ............................................ 13
8.1 Overview ................................................................. 13
8.2 Functional Block Diagram ....................................... 13
8.3 Feature Description................................................. 14
8.4 Device Functional Modes........................................ 17
9 Application and Implementation ........................ 24
9.1 Application Information............................................ 24
9.2 Typical Application ................................................. 24
10 Power Supply Recommendations ..................... 30
11 Layout................................................................... 31
11.1 Layout Guidelines ................................................. 31
11.2 Layout Example .................................................... 31
12 Device and Documentation Support ................. 32
12.1 Documentation Support ....................................... 32
12.2 Related Links ........................................................ 32
12.3 Community Resources.......................................... 32
12.4 Trademarks ........................................................... 32
12.5 Electrostatic Discharge Caution ............................ 32
12.6 Glossary ................................................................ 32
13 Mechanical, Packaging, and Orderable
Information ........................................................... 32
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision F (February 2015) to Revision G
Page
• Changed the values of the Power limit threshold in Electrical Characteristics for VOUT = 7 V and VOUT = 2 V From:
10, 12.5, 15 mV To: 10.1, 11.6, 13.1 mV ............................................................................................................................... 7
• Changed the title of Figure 8 From: MOSFET Gate Current vs Voltage Across RSENSE During Inrush Power Limiting
To: Gate Current vs Voltage Across RSENSE........................................................................................................................... 9
• Added Figure 9 ...................................................................................................................................................................... 9
• Changed V(VCC–SENSE) To: V(SENSE–VCC) in Figure 10 and Figure 11 ........................................................................................ 9
• Added Equation 1 ................................................................................................................................................................ 15
• Added text to the PROG section: "To compute the Power limit based on an existing RPROG..." ......................................... 15
• Changed Equation 2 ............................................................................................................................................................ 15
• Changed text in STEP 3. Choose Power-Limit Value, PLIM, and RPROG From: "a 53.6-k, 1% resistor is selected for
RPROG" To: a 44.2-k, 1% resistor is selected for RPROG" .................................................................................................... 27
• Changed Equation 9 ............................................................................................................................................................ 27
• Added the Using Soft Start with TPS2471x section ............................................................................................................ 30
Changes from Revision E (November 2013) to Revision F
Page
• Added ESD Rating table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section. ................................................................................................ 1
• Changed the Input voltage range, PROG - MAX value in the Absolute Maximum Ratings table From: 0.3 To: 3.6 ............ 5
• Deleted External capacitance - GATE from the Recommended Operating Conditions ......................................................... 5
• Deleted text from the last paragraph in the GATE section "If used, any capacitor connecting GATE and GND should
not exceed 1 μF and it should be connected in series with a resistor of no less than 1 k.".............................................. 15
• Deleted section: Alternative Design Example: GATE Capacitor (dV/dt) Control in Inrush Mode......................................... 29
• Deleted text from the High-Gate-Capacitance Applications section "When gate capacitor dV/dt control is used, ...
then a Zener diode is not necessary." .................................................................................................................................. 29
2 Submit Documentation Feedback
Copyright © 2011–2015, Texas Instruments Incorporated
Product Folder Links: TPS24710 TPS24711 TPS24712 TPS24713


Part Number TPS24711
Description 2.5-V to 18-V High-Efficiency Power-Limiting Hot-Swap Controller
Maker etcTI
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